CN221272483U - Suspension system and vehicle with same - Google Patents

Abstract

The application provides a suspension system and a vehicle with the same, wherein the suspension system comprises: a plurality of damper groups including left and right dampers; a hydraulic pump assembly operable to pump a driving medium to the damper group and to drive at least one of the left damper and the right damper to lift; a plurality of accumulators, each accumulator being disposed between a left damper and a right damper in one damper group; the control valve group includes: the first control valve is used for controlling the on-off states of the left shock absorber and the energy accumulator; and the second control valve is used for controlling the on-off state of the right shock absorber and the energy accumulator. Therefore, the rigidity of the suspension in the inclination measurement of the vehicle in the turning process can be improved, the roll angle of the vehicle is reduced, the stability and the safety of the vehicle are improved, and the safety feeling and the riding experience of drivers and passengers are improved. Meanwhile, the energy accumulator and the control valve are fewer in number, so that the weight of the suspension system and the arrangement difficulty of components can be reduced.

Description

Suspension system and vehicle with same

Technical Field

The application relates to the technical field of vehicles, in particular to a suspension system and a vehicle with the suspension system.

Background

When the vehicle turns, the axle load is transferred to the other side due to centrifugal force, thereby causing the vehicle to have a certain roll angle. Wherein, the smaller the roll angle of the vehicle, the better the stability and safety of the vehicle are, and the sufficient safety feeling and good driving experience can be provided for the driver and the passengers.

In the related art, the damping force is increased by adjusting the damping valve to improve the rigidity of the shock absorber, but the control degree is limited, and the full adjustment effect on the rolling of the vehicle cannot be achieved.

Disclosure of utility model

In view of this, the present application aims to propose a suspension system to improve the anti-roll performance of a vehicle while reducing the number of components in the suspension system.

In order to achieve the above purpose, the technical scheme of the application is realized as follows:

A suspension system comprising: a plurality of damper groups, each damper group including a left damper and a right damper; a plurality of accumulators, each of said accumulators being disposed between said left and right dampers in one of said damper groups and being operable to absorb a driving medium; the gesture control assembly, gesture control assembly includes a plurality of control valves, every control valve group corresponds with a shock absorber group and arranges, and every control valve group all includes: the first control valve is used for controlling the on-off states of the left shock absorber and the energy accumulator; and the second control valve is used for controlling the on-off states of the right shock absorber and the energy accumulator.

In some embodiments of the application, the suspension system further comprises: a hydraulic pump assembly operable to pump a driving medium to the set of dampers and to drive at least one of the left damper and the right damper to lift; the attitude control assembly further comprises a third control valve, and the third control valve is used for controlling the on-off states of the hydraulic pump assembly and the control valve group.

In some embodiments of the application, the hydraulic pump assembly includes: a liquid storage device for storing the driving medium; and the pump liquid flow paths are connected between one shock absorber group and the liquid storage device, and are arranged in parallel.

In some embodiments of the application, the pump flow path comprises: the third control valve is arranged on the main flow section; the two branch road sections are respectively connected between the main flow road section and the left shock absorber, between the main flow road section and the right shock absorber, and the first control valve and the second control valve are respectively arranged on the two branch road sections.

In some embodiments of the application, the pump flow path comprises: the third control valve is arranged on the main flow section; the two branch road sections are respectively connected between the main road section and the left shock absorber, between the main road section and the right shock absorber, and the first control valve and the second control valve are arranged on the same branch road section.

In some embodiments of the application, the hydraulic pump assembly further comprises: a liquid outlet flow path connected between the liquid storage device and the pump flow path; the pump body is used for conveying the driving medium in the liquid storage device to one side of the pump liquid flow path; and the liquid return flow path is connected with the liquid storage device and is used for allowing the driving medium to flow back into the liquid storage device.

In some embodiments of the application, the hydraulic pump assembly further comprises: the one-way valve is arranged on the liquid outlet flow path and is used for enabling the driving medium to flow out of the liquid outlet flow path in a one-way mode.

In some embodiments of the present application, the number of damper sets is two, and the two damper sets are a front suspension damper set and a rear suspension damper set, respectively, and the front suspension damper set includes a left front damper and a right front damper; the rear suspension vibration damper group comprises a left rear vibration damper and a right rear vibration damper; the accumulator includes: the front suspension energy accumulator is arranged between the left front shock absorber and the right front shock absorber, the first control valve is used for controlling the on-off state of the front suspension energy accumulator and the left front shock absorber, and the second control valve is used for controlling the on-off state of the front suspension energy accumulator and the right front shock absorber; the rear suspension energy accumulator is arranged between the left rear shock absorber and the right rear shock absorber, the first control valve is used for controlling the on-off state of the rear suspension energy accumulator and the left rear shock absorber, and the second control valve is used for controlling the on-off state of the rear suspension energy accumulator and the right rear shock absorber.

Compared with the prior art, the suspension system provided by the application has the following advantages:

Through setting up six control valves (two sets of first control valve, second control valve and third control valve) and two energy storage ware (front suspension energy storage ware and rear suspension energy storage ware), can satisfy the control demand to automobile body roll adjustment, pitch adjustment and altitude mixture control, the device quantity of arranging in prior art scheme is fewer, can alleviate suspension system's weight to reduce and arrange the degree of difficulty and manufacturing cost.

Another object of the application is to propose a vehicle.

In order to achieve the above purpose, the technical scheme of the application is realized as follows:

A vehicle comprising the suspension system described above.

In some embodiments of the application, the vehicle further comprises: the vehicle height sensor is used for detecting the height of the vehicle; a pitch-roll sensor for detecting a pitch angle of the vehicle; a vertical acceleration sensor for detecting a vertical acceleration of the vehicle; the wheel speed sensor is used for detecting the wheel speed; and the ECU can be connected with the vehicle body height sensor, the pitching and rolling sensor, the vertical acceleration sensor and the wheel speed sensor, namely the attitude control assembly.

The vehicle has the same advantages as the suspension system described above over the prior art and will not be described in detail here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic diagram of a suspension system according to an embodiment of the present application;

FIG. 2 is a schematic illustration of a suspension system according to an embodiment of the present application;

FIG. 3 is a schematic elevation schematic of a suspension system according to an embodiment of the present application;

FIG. 4 is a left turn stiffness adjustment schematic of a suspension system according to an embodiment of the present application;

FIG. 5 is a schematic illustration of acceleration stiffness adjustment of a suspension system according to an embodiment of the present application;

Fig. 6 is a schematic view of braking stiffness adjustment of a suspension system according to an embodiment of the present application.

Reference numerals illustrate:

A suspension system 100;

A damper group 1; a left damper 101; a right damper 102; a front suspension damper group 103; rear suspension damper group 104; a damper 11; a piston rod 111; a hydraulic chamber 112; a damping solenoid valve 113;

An accumulator 2; a front suspension accumulator 21; a rear suspension accumulator 22; a liquid chamber 201; a gas chamber 202;

A posture control assembly 3; a first control valve 31; a second control valve 32; a third control valve 33;

A hydraulic pump assembly 4; a liquid storage device 41; a pump fluid flow path 42; a main flow section 421; a tributary section 422; a liquid outlet channel 43; a pump body 44; a loop flow path 45; a one-way valve 46; a drive motor 47; a return valve 48;

A body height sensor 51; a pitch-roll sensor 52; a vertical acceleration sensor 53; wheel speed sensor 54; and an ECU55.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

The application will be described in detail below with reference to the drawings in connection with embodiments.

According to the suspension system 100 of the embodiment of the first aspect of the present application, the suspension system 100 is applied to a vehicle, and the suspension system 100 includes: a hydraulic pump assembly 4, an attitude control assembly 3, a plurality of damper groups 1 and a plurality of accumulators 2.

As shown in fig. 1, each damper group 1 includes a left damper 101 and a right damper 102, and each accumulator 2 is disposed between the left damper 101 and the right damper 102 in one damper group 1 and is operable to absorb a driving medium to store and accumulate energy in the suspension system 100 and to release the energy again to replenish the suspension system 100 when the suspension system 100 is needed. The accumulator 2 may be used to regulate the pressure in the drive medium flow path in the suspension system 100 to ensure that the drive pressure in the suspension system 100 is normal.

The accumulator 2 is an energy storage device, which can convert the driving energy of the driving medium in the suspension system 100 into compression energy or potential energy for storage, and can convert the stored energy into hydraulic energy again for release and resupply to the suspension system 100.

As shown in fig. 1, in the present application, the accumulator 2 is arranged between the left damper 101 and the right damper 102 in the same group of dampers 1, the hydraulic chambers 112 of the two dampers 11 may be in communication with the accumulator 2, and the driving medium in the dampers 11 may flow to the liquid chamber 201 of the accumulator 2. That is, the left damper 101 and the right damper 102 of the same group of damper groups 1 share one accumulator 2.

Further, the attitude control assembly 3 includes a plurality of control valve groups, each of which is arranged corresponding to one of the damper groups 1, and each of which includes: a first control valve 31 and a second control valve 32, the first control valve 31 being used to control the on-off state of the left shock absorber 101 and the accumulator 2; the second control valve 32 is used to control the on-off state of the right shock absorber 102 and the accumulator 2.

Wherein the first control valve 31 and the second control valve 32 may be configured as solenoid valves.

When the first control valve 31 is closed, the left shock absorber 101 and the accumulator 2 are kept in a disconnected state, and the driving medium in the hydraulic chamber 112 of the left shock absorber 101 cannot flow into the accumulator 2; when the first control valve 31 is opened, a communication state is maintained between the left shock absorber 101 and the hydraulic pump assembly 4, a communication state is maintained between the left shock absorber 101 and the accumulator 2, and the driving medium in the hydraulic chamber 112 of the left shock absorber 101 can flow into the accumulator 2.

The second control valve 32 has the same function as the first control valve 31, and is used for controlling the on-off states of the right shock absorber 102 and the accumulator 2, and will not be described herein.

The suspension system 100 of the present application can control the first control valve 31 and the second control valve 32 according to the current state of the vehicle to adjust the posture of the vehicle, thereby improving the riding experience of the vehicle.

It can be understood that the left shock absorber 101 and the right shock absorber 102 in the same shock absorber group 1 share one energy accumulator 2, the pressure in the system can be balanced through the energy accumulator 2, and the on-off states of the shock absorber 11 and the energy accumulator 2 and the shock absorber 11 and the hydraulic pump assembly 4 can be adjusted through the cooperation of the control valve group, so that the number of the energy accumulator 2 and the control valve in the suspension system 100 can be reduced, and various adjustment requirements of the suspension can be met.

When the vehicle turns, the axial load is transferred to the other side due to the centrifugal force, thereby causing the vehicle to have a certain roll angle. Wherein, the smaller the roll angle of the vehicle, the better the stability and safety of the vehicle are, and the sufficient safety feeling and good driving experience can be provided for the driver and the passengers.

In the related art, the damping force is increased by adjusting the damping valve to raise the rigidity of the shock absorber 11, but the degree of control is limited, and a sufficient adjusting effect on the roll of the vehicle cannot be achieved.

In the present application, taking the left turn of the vehicle as an example, when the vehicle performs the left turn, the second control valve 32 is closed, and the driving medium in the right shock absorber 102 cannot be delivered outward, so that the rigidity of the suspension on the right side can be ensured, so that the compression amount of the right shock absorber 102 can be greatly reduced, and the roll angle of the vehicle on the right side can be reduced. Referring to fig. 1, the damper 11 of the present application is also provided with a damping solenoid valve 113, and the stiffness of the damper 11 can be adjusted by the damping solenoid valve 113, and the stiffness of the damper 11 can be further improved by combining the matching effect of the driving medium and the damper 11.

Wherein, the above-mentioned "delivery to the outside" means: the driving medium in the right damper 102 flows to the accumulator 2 or the left damper 101. It will be appreciated that if the driving medium of the hydraulic chamber 112 in the right damper 102 flows to the hydraulic chamber 201 of the accumulator 2 and the hydraulic chamber 112 of the left damper 101, the tension on the side of the left damper 101 will be further increased, deteriorating the roll of the vehicle.

Similarly, when the vehicle performs a right turn, the first control valve 31 is closed so that the driving medium in the left shock absorber 101 cannot be delivered outward, ensuring the rigidity of the suspension on the left side.

According to the suspension system 100 provided by the embodiment of the application, the rigidity of the suspension in the inclination measurement of the vehicle in the turning process can be improved, the side-tipping angle of the vehicle is reduced, the stability and the safety of the vehicle are improved, and the safety feeling and the riding experience of drivers and passengers are improved.

In some embodiments of the application, the hydraulic pump assembly 4 is used to pump or recover driving medium to the shock absorber set 1. When the hydraulic pump assembly 4 pumps driving medium to the shock absorber group 1, the driving medium can drive the piston rods 111 of the shock absorbers 11 (such as the left shock absorber 101 and the right shock absorber 102) to move so as to realize lifting action of the shock absorbers 11, thereby adjusting the height of the vehicle; when the driving medium in the damper group 1 flows back to the hydraulic pump assembly 4, the piston rod 111 of the damper 11 moves in the opposite direction to achieve the lowering action of the damper 11, thereby adjusting the vehicle height.

Referring to fig. 1, it is to be noted that a plurality of dampers 11, that is, a left damper 101 and a right damper 102, are included in each damper group 1, and each damper 11 is configured as a hydraulic damper. The hydraulic damper has a hydraulic chamber 112, a driving medium can be filled in the hydraulic chamber 112, and when the driving medium is delivered to the damper 11 through the hydraulic pump assembly 4, the piston rod 111 can be driven to move along with the driving medium flowing into the hydraulic chamber 112, so that the lifting action of the hydraulic damper is realized, and the height of the vehicle body is adjusted. The driving medium may be a fluid medium such as hydraulic oil, and is not particularly limited herein.

It will be appreciated that one end of the piston rod 111 is connected to the vehicle body and the other end is arranged within the shock absorber 11 and may cooperate with the driving medium. When the driving medium flows into the hydraulic chamber 112, the driving medium can drive the piston rod 111 to move so as to lift the vehicle body; when the height of the vehicle body needs to be reduced, the hydraulic pump assembly 4 does not convey the driving medium to the hydraulic cavity 112 any more, and under the dead weight of the vehicle body, the driving medium in the hydraulic cavity 112 can be driven to flow out, and the flowing driving medium can be recovered through the hydraulic pump assembly 4, so that the height of the vehicle body can be reduced. Referring to fig. 1, a hydraulic chamber 112 is provided at the bottom of the shock absorber 11, and when a driving medium is supplied into the hydraulic chamber 112, the driving medium may drive the piston rod 111 to move upward.

Thus, by the cooperation of the hydraulic pump assembly 4 and the damper group 1, the lifting action of the damper 11 can be achieved to adjust the vehicle body height.

The suspension system 100 of the present application can realize the raising and lowering functions of the vehicle body, and can adjust the rigidity of the suspension to improve the stability and reliability of the vehicle in cornering (roll state).

When it is necessary to raise the vehicle body height, the vehicle body is lifted (the vehicle is raised) by opening the first control valve 31 and the second control valve 32 and bringing the hydraulic pump assembly 4 into an operating state, and feeding the driving medium to the damper group 1 to drive the piston rods 111 in the left damper 101 and the right damper 102 upward. Meanwhile, when the corresponding suspension portion of the damper group 1 reaches the set height, the hydraulic pump assembly 4 no longer delivers the driving medium to the damper group 1.

It will be appreciated that during the delivery of the driving medium by the hydraulic pump assembly 4 to the damper group 1, the accumulator 2 arranged between the two dampers 11 (i.e. the left damper 101 and the right damper 102) of the damper group 1 will absorb a portion of the driving medium to balance the pressure in the system.

When the body height of the vehicle needs to be lowered, the first control valve 31 and the second control valve 32 are kept in an open state, and the oil of the two dampers 11 in the damper group 1 flows back to the hydraulic pump assembly 4 by the self weight of the vehicle. Meanwhile, the driving medium in the accumulator 2 corresponding to the damper group 1 can press the oil in the liquid chamber 201 back to the hydraulic pump assembly 4 under the pressure of the air chamber 202.

Therefore, the communication states of the shock absorber group 1, the energy accumulator 2 and the hydraulic pump assembly 4 are controlled through the gesture control assembly 3, the adjustment requirement of increasing or decreasing the height of the vehicle body can be met, the rigidity of the suspension on the inclined side of the vehicle during turning can be improved, the roll angle of the vehicle is reduced, the stability and the safety of the vehicle are improved, and the safety feeling and the driving experience of drivers and passengers are improved. At the same time, the small number of the energy accumulator 2 and the control valve in the application can reduce the weight of the suspension system 100 and the arrangement difficulty of the components, and reduce the cost of the suspension system 100.

As shown in fig. 1, in some embodiments of the present application, the attitude control assembly 3 further includes a third control valve 33, and the third control valve 33 is used to control the on-off state of the hydraulic pump assembly 4 and the control valve group. When the third control valve 33 is opened, the hydraulic pump assembly 4 is in a communication state with the control valve group; when the third control valve 33 is closed, the hydraulic pump assembly 4 is in a disconnected state from the control valve group.

The third control valves 33 are plural, and each control valve is disposed corresponding to one control valve group and is used for controlling the on-off state of the control valve group and the hydraulic pump assembly 4. When the third control valve 33 is in the open state, the driving medium in the damper group 1 and the accumulator 2 can flow back to the hydraulic pump assembly 4, and of course, the driving medium can also be fed into the damper 11 through the hydraulic pump assembly 4; when the third control valve 33 is in the closed state, the driving medium in the damper group 1 and the accumulator 2 cannot flow back to the hydraulic pump assembly 4, and the height state of the suspension can be maintained.

Wherein after the height of the vehicle body is adjusted, the height of the vehicle body can be maintained at the set adjustment height by closing the third control valve 33 to prevent the back flow of the driving medium to the hydraulic pump assembly 4. It will be appreciated that the driving medium is fed to the damper assembly 1 by the hydraulic pump assembly 4 to effect the lifting action of the damper 11 to raise the vehicle body height, and that the third control valve 33 may be closed to maintain the damper 11 in position to prevent backflow of the driving medium in the damper assembly 1 or the accumulator 2 to the hydraulic pump assembly 4.

As shown in fig. 5, in some embodiments of the present application, the damper group 1 is two, and the two damper groups 1 are a front suspension damper group 103 and a rear suspension damper group 104, respectively, the front suspension damper group 103 including a left front damper and a right front damper, and the rear suspension damper group 104 including a left rear damper and a right rear damper. Wherein the left front damper is the left damper 101 in the front suspension damper group 103 and the right front damper is the right damper 102 in the front suspension damper group 103; the left rear damper is the left damper 101 in the rear suspension damper group 103, and the right rear damper is the right damper 102 in the rear suspension damper group 103.

Wherein, the control valves is two sets of, including first control valve 31 and second control valve 32 in every control valve group, and two sets of respectively correspond front suspension shock absorber group 103 and rear suspension shock absorber group 104 and arrange, and energy storage ware 2 includes: the front suspension accumulator 21 and the rear suspension accumulator 22, the front suspension accumulator 21 is arranged between the left front shock absorber and the right front shock absorber, the first control valve 31 is used for controlling the on-off state of the front suspension accumulator 21 and the left front shock absorber, and the second control valve 32 is used for controlling the on-off state of the front suspension accumulator 21 and the right front shock absorber; the rear suspension accumulator 22 is disposed between the left rear shock absorber and the right rear shock absorber, the first control valve 31 is used for controlling the on-off state of the rear suspension accumulator 22 and the left rear shock absorber, and the second control valve 32 is used for controlling the on-off state of the rear suspension accumulator 22 and the right rear shock absorber.

Further, two third control valves 33 are further disposed in the gesture control assembly 3, and the two third control valves 33 are respectively disposed corresponding to the two control valve groups and are used for controlling the on-off states of the hydraulic pump assembly 4 and the control valve groups.

Since the lever ratio of the front suspension in the vehicle is different from that of the rear suspension, the front suspension damper group 103 and the rear suspension damper group 104 cannot share the same accumulator 2. In the suspension system 100 of the present application, the front suspension accumulator 21 and the rear suspension accumulator 22 are provided, the front suspension accumulator 21 is used for balancing the system pressure of the front suspension, the rear suspension accumulator 22 is used for balancing the system pressure of the rear suspension, and in the present application, only two accumulators 2 (i.e., the front suspension accumulator 21 and the rear suspension accumulator 22) are provided, so that the pressure balancing requirement in the suspension system 100 can be satisfied, and a large number of accumulators 2 are not required to be provided in the suspension system 100.

It will be appreciated that the adjustment of the front suspension and the rear suspension may be performed separately during the adjustment of the height of the vehicle body. For example, when the vehicle body height needs to be raised, the hydraulic pump assembly 4 may be used to convey the driving medium to the front suspension damper group 103, and after the front suspension height is adjusted to the set height, the third control valve 33 corresponding to the front suspension is closed, and then the hydraulic pump assembly 4 is used to convey the driving medium to the rear suspension damper group 104, so as to adjust the rear suspension height to the set position; when the vehicle body height needs to be reduced, both the third control valves 33 can be opened, under the action of the vehicle dead weight, the driving media of the two damper groups 1 (the front suspension damper group 103 and the rear suspension damper group 104) can be pressed out, and the driving media in the front accumulator 2 and the rear accumulator 2 can also be pressed out under the action of the air chamber 202 and recovered by the hydraulic pump assembly 4.

Wherein, due to the difference of the front suspension and the rear suspension and the weight distribution difference of the corresponding front suspension and rear suspension areas of the vehicle body, the descending speed of the front and rear of the vehicle body is different, such as: when the weight is carried on the rear portion of the vehicle body, the descent speed of the rear suspension is faster than that of the front suspension, so that the corresponding third control valve 33 can be closed after the front suspension or rear suspension height of the vehicle body is reduced to a preset height.

The adjustment of the height of the vehicle body may be performed during the running of the vehicle, and in order to ensure the illumination effect of the headlight of the vehicle, the attitude control assembly 3 may be controlled according to the adjustment states of the front suspension and the rear suspension. For example: in the process of reducing the vehicle body, the falling speed of the rear overhang is faster than that of the front overhang, and when the height difference between the rear overhang and the front overhang exceeds a preset value, the third control valve 33 corresponding to the rear overhang can be closed first so as to reduce the falling speed of the rear overhang and prevent the headlight from radiating upwards.

In the present application, by arranging the suspension system 100 as a relatively independently adjustable front suspension portion and rear suspension portion, the vehicle can be further pitch controlled (i.e., body leaning forward or backward) to enhance the ride experience.

When the vehicle performs emergency braking, the axle load is transferred to the front suspension side, so that the vehicle is in a nodding phenomenon (namely, the vehicle body tilts forwards); when the vehicle starts to accelerate or accelerates during running, the axle load is transferred to the rear overhang side, so that the vehicle can lean against the head (namely, the vehicle body leans back).

Referring to fig. 6, in order to prevent the vehicle body from tilting forward too much, the degree of compression of the front suspension damper group 103 (the left front damper 11 and the right front damper 11) may be shortened by increasing the rigidity of the front suspension damper group 103 to reduce the vehicle's nodding width. Specifically, the front suspension accumulator 21 may be disconnected from the left and right front dampers on both sides by closing the control valve groups (i.e., the first and second control valves 31 and 32) corresponding to the front suspension damper group 103, thereby improving the front suspension stiffness and shortening the compression strokes of the left and right front dampers.

Referring to fig. 5, in order to prevent the vehicle body from leaning too much, the degree of compression of the rear suspension damper group 104 (left rear damper and right rear damper) may be shortened by increasing the rigidity of the rear suspension damper group 104 to reduce the vehicle's head leaning amplitude. Specifically, the rear suspension accumulator 22 may be disconnected from the left and right rear dampers at both sides by closing the control valve groups (i.e., the first and second control valves 31 and 32) corresponding to the rear suspension damper group 104, so as to improve the rear suspension stiffness and shorten the compression strokes of the left and right rear dampers.

Therefore, the pitching control adjustment can be performed on the vehicle, the forward tilting or backward tilting angle of the vehicle body is reduced, and the riding experience of a user is improved.

As shown in fig. 1, in some embodiments of the present application, the hydraulic pump assembly 4 includes: a liquid storage device 41 for storing a driving medium, and a plurality of pump liquid flow paths 42, the pump liquid flow paths 42 being connected between the damper group 1 and the liquid storage device 41, and the plurality of pump liquid flow paths 42 being provided in parallel.

Wherein each pump fluid flow path 42 corresponds to one damper group 1, and the driving medium can be conveyed into the damper group 1 through the pump fluid flow path 42 or recovered from the damper group 1 through the pump fluid flow path 42. Meanwhile, the plurality of pump liquid flow paths 42 are arranged in parallel, so that the plurality of pump liquid flow paths 42 can independently convey or recover driving medium, the reliability of conveying or recovering the driving medium in the hydraulic pump assembly 4 is improved, and the control flexibility of the suspension system 100 is improved.

As shown in fig. 1, in some embodiments of the present application, each pump fluid flow path 42 includes a main flow path segment 421 and two tributary flow path segments 422. Wherein the third control valve 33 is disposed at the main flow section 421, and the two branch flow sections 422 are connected between the main flow section 421 and the left shock absorber 101, and the main flow section 421 and the right shock absorber 102, respectively, and the first control valve 31 and the second control valve 32 are disposed at the two branch flow sections 422, respectively.

Wherein, by controlling the on-off of the third control valve 33, the on-off state of the two branch flow path sections 422 and the hydraulic pump assembly 4 can be controlled. When the vehicle is required to raise or lower the vehicle body, the third control valve 33 may be controlled to control the on-off state of the damper group 1 and the hydraulic pump assembly 4.

Referring to fig. 1, two branch road segments 422 are disposed in parallel, that is, when the third control valve 33 is in an open state, the first control valve 31 and the second control valve 32 disposed on the two branches are respectively communicated with the hydraulic pump assembly 4, and the accumulator 2 disposed between the first control valve 31 and the second control valve 32 is also communicated with the hydraulic pump assembly 4.

As shown in fig. 2, in other embodiments of the present application, each pump fluid flow path 42 includes a main flow path section 421 and two tributary flow path sections 422. Wherein the third control valve 33 is disposed in the main flow section 421, and the two branch flow sections 422 are connected between the main flow section 421 and the left shock absorber 101, and the main flow section 421 and the right shock absorber 102, respectively, and the first control valve 31 and the second control valve 32 are disposed on the same branch flow section 422.

Referring to fig. 2, two branch road segments 422 are disposed in parallel, and the first control valve 31 and the second control valve 32 are disposed on the same branch road segment 422. That is, when the third control valve 33 is in the open state, the first control valve 31 and the second control valve 32 disposed on the same branch may be sequentially communicated with the hydraulic pump assembly 4.

Further, the accumulator 2 disposed between the first control valve 31 and the second control valve 32 needs to be connected in series between the accumulator 2 and the third control valve 33 (the first control valve 31 or the second control valve 32, in fig. 2, the second control valve 32) in an open state to be able to communicate with the hydraulic pump assembly 4.

It will be appreciated that the two control valves (i.e., the first control valve 31 and the second control valve 32) are disposed on the same branch or on both branches, respectively, can meet the requirements for vehicle body elevation adjustment, vehicle body lowering adjustment, vehicle body roll control, and vehicle body pitch control.

As shown in fig. 1, in some embodiments of the present application, the hydraulic pump assembly 4 further includes: a liquid outlet flow path 43, a pump body 44, and a liquid return flow path 45. The liquid outlet channel 43 is connected between the liquid storage device 41 and the pump liquid channel 42, the pump body 44 is used for conveying the driving medium in the liquid storage device 41 to the pump liquid channel 42 side, and the liquid return channel 45 is connected with the liquid storage device 41 and is used for allowing the driving medium to flow back into the liquid storage device 41.

Specifically, the pump body 44 is configured to pump the driving medium to the liquid outlet flow path 43, and the driving medium in the liquid outlet flow path 43 may be further conveyed to the pump flow path 42 side and conveyed to the damper group 1 side through the pump flow path 42 to realize the lifting function of the damper 11. Similarly, when the vehicle body height needs to be reduced, the driving medium in the shock absorber 11 and the accumulator 2 can flow to the loop liquid flow path 45 through the pump liquid flow path 42, and is recovered to the liquid storage device 41 after flowing through the loop liquid flow path 45, so that the cyclic utilization of the driving medium is realized.

Referring to fig. 1, one end port of the liquid return path 45 communicates with the liquid reservoir 41, and the other end port of the liquid return path 45 may be connected to the liquid outlet path 43. The return flow path 45 is provided with a return valve 48, and the return valve 48 is used for safely returning the driving medium, so that the liquid can be prevented from flowing backwards, and the safety and reliability of the return of the driving medium are improved. It will be appreciated that during the body lowering adjustment, the driving medium may flow back into the reservoir 41 through the return valve 48.

As shown in fig. 1, in some embodiments of the present application, the hydraulic pump assembly 4 further includes a check valve 46, where the check valve 46 is disposed on the liquid outlet flow path 43, and the check valve 46 is used for unidirectional outflow of the driving medium from the liquid outlet flow path 43, so as to prevent backflow of the driving medium at the liquid outlet flow path 43, and improve reliability and stability of the output driving medium process of the hydraulic pump assembly 4.

As shown in fig. 1, in some embodiments of the present application, the hydraulic pump assembly 4 further includes a driving motor 47, and the driving motor 47 is used to drive the pump body 44 to operate, so as to pump the driving medium in the liquid storage device 41 to the liquid outlet flow path 43 through the pump body 44.

In some embodiments of the present application, the reservoir 41 is configured as a reservoir for housing a storage drive medium.

The vehicle according to the second aspect of the embodiment of the application includes the suspension system 100 described above, and by providing the suspension system 100 described above, the raising and lowering functions of the vehicle body can be achieved, and the rigidity of the suspension can be adjusted to improve the stability and reliability of the vehicle in cornering (roll state).

In some embodiments of the application, the vehicle further comprises: a height sensor, a pitch-roll sensor 52, a vertical acceleration sensor 53, a wheel speed sensor 54, and an ECU55.

Wherein the height sensor is used for detecting the height of the vehicle, the pitch-roll sensor 52 is used for detecting the acceleration of the pitch or roll of the vehicle, the vertical acceleration sensor 53 is used for detecting the vertical acceleration of the vehicle, the wheel speed sensor 54 is used for detecting the wheel speed, and the ECU55 (Electronic Control Unit: electronic control unit) may be connected to the height sensor, the pitch-roll sensor 52, the vertical acceleration sensor 53, the wheel speed sensor 54 and the attitude control assembly 3, and may control the suspension system 100 according to the detection signals, such as: the hydraulic pump assembly 4 is controlled to pump driving medium to the shock absorber group 1, and a control valve in the attitude control assembly 3 is controlled to be opened or closed, and the like.

Referring to fig. 1, it should be noted that the "other vehicle signal" shown in fig. 1 may include: steering wheel angle signals, accelerator pedal signals, brake pedal signals, etc.

In some embodiments, the height sensors are plural, and the plural height sensors are respectively provided corresponding to the plural dampers 11 and are used for detecting the height at the suspension.

The control operation of the suspension system 100 is controlled by the ECU55 based on one or more detection signals of the above-described sensors (the height sensor, the pitch-roll sensor 52, the vertical acceleration sensor 53, and the wheel speed sensor 54).

For example: referring to fig. 4, in the vehicle roll control, when the ECU55 receives the detection signal of the pitch roll sensor 52 and the steering wheel rotation angle signal, it can be recognized that the vehicle is performing a turning operation, and the first control valve 31 or the second control valve 32 is controlled to close, thereby improving the one-sided (left or right) suspension stiffness and reducing the roll angle of the vehicle.

In the vehicle pitch control, referring to fig. 6, when the vehicle is in emergency braking, the axle load is transferred forward, and when the ECU55 receives the detection signals of the pitch-roll sensor 52, the body height sensor 51, and the brake signal, it can be recognized that the vehicle is performing the braking operation, and by closing the first control valve 31 and the second control valve 32 in the control valve group corresponding to the front suspension damper group 103, the front suspension stiffness can be increased, and the front pour point head width of the vehicle can be reduced; referring to fig. 5, when the vehicle starts accelerating or suddenly accelerates while traveling, the axle load shifts to the rear suspension, and when the ECU55 receives the pitch-roll sensor 52, the body-height sensor 51, and the accelerator pedal signal, it can be recognized that the vehicle is performing a rapid acceleration operation, and by closing the first control valve 31 and the second control valve 32 in the control valve group corresponding to the rear suspension damper group 104, the rear suspension rigidity can be increased, and the range of the vehicle to the rear suspension can be reduced.

According to the suspension system 100 of the embodiment of the present application, by providing six control valves (two sets of the first control valve 31, the second control valve 32 and the third control valve 33) and two accumulators 2 (the front suspension accumulator 21 and the rear suspension accumulator 22), the control requirements for roll adjustment, pitch adjustment and height adjustment of the vehicle body can be satisfied, and compared with the number of devices arranged in the prior art, the weight of the suspension system 100 can be reduced, and the difficulty in arrangement and the production cost can be reduced.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.

Claims (10)

1. A suspension system comprising:

A plurality of damper groups (1), each damper group (1) comprising a left damper (101) and a right damper (102);

-a plurality of accumulators (2), each of said accumulators (2) being arranged between said left damper (101) and said right damper (102) of one of said damper groups (1) and being operable to absorb a driving medium;

The attitude control assembly (3), the attitude control assembly (3) includes a plurality of control valves, every control valve group corresponds with a shock absorber group (1) and arranges, and every control valve group all includes:

A first control valve (31), wherein the first control valve (31) is used for controlling the on-off state of the left shock absorber (101) and the accumulator (2);

And the second control valve (32) is used for controlling the on-off state of the right shock absorber (102) and the accumulator (2).

2. The suspension system of claim 1, further comprising: -a hydraulic pump assembly (4), the hydraulic pump assembly (4) being operable to pump a driving medium to the damper group (1) and to drive at least one of the left damper (101) and the right damper (102) to lift;

The attitude control assembly (3) further comprises a third control valve (33), and the third control valve (33) is used for controlling the on-off state of the hydraulic pump assembly (4) and the control valve group.

3. Suspension system according to claim 2, characterized in that the hydraulic pump assembly (4) comprises:

-a reservoir (41), the reservoir (41) being adapted to store the driving medium;

And a plurality of pump fluid passages (42), wherein each pump fluid passage (42) is connected between one shock absorber group (1) and the liquid storage device (41), and the pump fluid passages (42) are arranged in parallel.

4. A suspension system according to claim 3, wherein the pump fluid flow path (42) includes:

-a main flow section (421), said third control valve (33) being arranged at said main flow section (421);

Two branch road sections (422), two branch road sections (422) are respectively connected between the main road section (421) and the left shock absorber (101), the main road section (421) and the right shock absorber (102), and the first control valve (31) and the second control valve (32) are respectively arranged on the two branch road sections (422).

5. A suspension system according to claim 3, wherein the pump fluid flow path (42) includes:

-a main flow section (421), said third control valve (33) being arranged at said main flow section (421);

Two branch road sections (422), two branch road sections (422) are respectively connected between the main road section (421) and the left shock absorber (101), the main road section (421) and the right shock absorber (102), and the first control valve (31) and the second control valve (32) are arranged on the same branch road section (422).

6. A suspension system according to claim 3, wherein the hydraulic pump assembly (4) further comprises:

A liquid outlet flow path (43), wherein the liquid outlet flow path (43) is connected between the liquid storage device (41) and the pump flow path (42);

A pump body (44), wherein the pump body (44) is used for conveying the driving medium in the liquid storage device (41) to the side of the pump liquid flow path (42);

-a return flow path (45), said return flow path (45) being connected to said reservoir (41) and being adapted to return said driving medium back into said reservoir (41).

7. The suspension system according to claim 6, wherein the hydraulic pump assembly (4) further comprises: and a one-way valve (46), wherein the one-way valve (46) is arranged on the liquid outlet flow path (43) and is used for enabling the driving medium to flow out of the liquid outlet flow path (43) in a one-way.

8. Suspension system according to claim 1, characterized in that the number of damper groups (1) is two, the two damper groups (1) being a front suspension damper group (103) and a rear suspension damper group (104), respectively, the front suspension damper group (103) comprising a left front damper and a right front damper; the rear suspension damper group (104) comprises a left rear damper and a right rear damper;

The accumulator (2) comprises:

the front suspension energy accumulator (21), the front suspension energy accumulator (21) is arranged between the left front shock absorber and the right front shock absorber, the first control valve (31) is used for controlling the on-off state of the front suspension energy accumulator (21) and the left front shock absorber, and the second control valve (32) is used for controlling the on-off state of the front suspension energy accumulator (21) and the right front shock absorber;

the rear suspension energy accumulator (22), the rear suspension energy accumulator (22) is arranged between the left rear shock absorber and the right rear shock absorber, the first control valve (31) is used for controlling the on-off states of the rear suspension energy accumulator (22) and the left rear shock absorber, and the second control valve (32) is used for controlling the on-off states of the rear suspension energy accumulator (22) and the right rear shock absorber.

9. A vehicle comprising a suspension system according to any one of claims 1-8.

10. The vehicle of claim 9, further comprising:

The height sensor is used for detecting the height of the vehicle body;

A pitch-roll sensor (52), the pitch-roll sensor (52) being configured to detect acceleration of a pitch or a roll of the vehicle;

A vertical acceleration sensor (53), the vertical acceleration sensor (53) being configured to detect a vertical acceleration of the vehicle;

a wheel speed sensor (54), the wheel speed sensor (54) for detecting a wheel speed;

And the ECU (55) can be connected with the height sensor, the pitching roll sensor (52), the vertical acceleration sensor (53) and the wheel speed sensor (54), namely the attitude control assembly (3).