KR19990049227A - Electronically controlled engine mount - Google Patents

Abstract

The present invention relates to an engine mount for supporting an engine of a vehicle,

In the engine mount in which a circular first orifice 6 formed at a position in which two flow holes 7 and 8 are symmetrical with each other between the pouring chamber 4 and the auxiliary liquid chamber 5 is built-in,

A cover body 22 having an electromagnet 21 embedded therein is formed at the center upper end of the first orifice 6, and a flow plate 23 made of an elastic material is formed at the center lower end of the first orifice 6 to form a second cover body 22. Comprising an orifice 24, the first flow hole 25 is formed in the center of the cover body 22, the second flow hole 26 is formed on the case where the flow plate 23 is formed, The opening and closing plate 27 for opening and closing the first flow hole 25 is installed below the electromagnet 21, so that it can quickly cope with the engine vibration that is changed according to the vehicle condition or the driving condition, thereby providing an optimum ride comfort. An electronically controlled engine mount is made possible.

Description

Electronically controlled engine mount

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine mount for supporting an engine of a vehicle, and in particular, a control means for forming a second orifice in a central portion of a liquid injection chamber and a liquid injection chamber and controlling whether the second orifice is opened according to whether the vehicle is driven The present invention relates to an electronically controlled engine mount capable of providing an optimum ride comfort by quickly coping with engine vibration that varies depending on vehicle conditions or driving conditions.

In general, the engine mount of the vehicle is responsible for supporting the engine, and is configured to attenuate the vibration energy while moving together with the vibration transmitted to the engine.

1 shows a conventional engine mount,

The engine mount seals the upper part of the case body 1 as a separate high-rubber body 2, inside which a circular orifice 6 and an elastic diaphragm 3 are built up and down. A liquid injection chamber 4 forming a relatively large space is formed between the body 2 and the orifice 6, and a liquid storage chamber 5 having a relatively small space is formed between the orifice 6 and the diaphragm 3. Is formed.

The fluid encapsulated in the liquid injection chamber 4 and the liquid injection chamber 5 is configured to be able to gradually eliminate the vibration while the engine mount moves like the vibration of the engine while flowing through the orifice 6.

In addition, the orifice 6 has a flow hole 7 in communication with the liquid injection chamber side and a flow hole 8 in communication with the liquid injection chamber side for allowing fluid to flow, and formed in a symmetrical position with each other. The upper and lower parts of 1) have fastening bolts for mounting on the engine and frame.

An air hole 9 is formed in the lower case of the case main body 1 so that the air can freely enter and exit the air chamber 10 during expansion and contraction of the diaphragm 3 having excellent elasticity. It is composed.

Referring to the operation of the conventional engine mount configured in this way,

When the engine starts or when the high frequency vibration or the low amplitude vibration of the large amplitude appears on the engine while the vehicle is running, the vibration is transmitted to the upper part of the engine mount, so that the main body 2 is compressed and restored to its original state. In this case, the space cross-sectional area of the pouring chamber 4 is momentarily reduced every time the rubber body 2 is extruded.

Accordingly, the fluid in the injection chamber 4 is moved to the subdivision chamber 5 through the flow holes 7 and 8 symmetrically formed in the orifice 6, so that the diaphragm 3 is the air chamber ( The air existing in 10) is expanded while discharging through the air hole 9, and then contracts again to move the fluid in the liquid-liquid chamber 5 back to the liquid-liquid chamber 4 repeatedly.

At this time, the expansion action of the diaphragm 3 is not simply expanded but is expanded while exhibiting expansion resistance, so that the liquid-liquid chamber 5 has a resistance to prevent the inflow of fluid, and such resistance is an engine mount, that is, injection Since the vibration energy transmitted to the chamber 4 is attenuated, the engine mount itself is to gradually reduce the vibration energy shown in the engine.

However, the conventional engine mount does not attenuate engine vibration in accordance with driving conditions or vehicle conditions because its vibration damping characteristics are constant. Therefore, vibration and noise deteriorate during idle rotation or constant speed driving, and engine torque is reduced during acceleration or deceleration. There was a problem that tremor occurs due to the fluctuation.

In other words, vibration and noise deteriorate due to an excessively large absolute spring constant during idle rotation or constant speed driving, and the ride comfort of the vehicle decreases due to the vibration attenuation of the engine mount being insufficient due to engine torque fluctuations during acceleration or deceleration of the vehicle. There was a problem.

Accordingly, the present invention for solving the above problems is to form a second orifice in the central portion of the injection chamber and the liquid-liquid chamber, and to configure the control means for controlling the opening of the second orifice in accordance with whether the vehicle running, vehicle conditions However, an object of the present invention is to provide an electronically controlled engine mount that can cope with engine vibration that is changed according to driving conditions to provide an optimum ride comfort.

1 is a side cross-sectional view showing a conventional engine mount.

Figure 2 is a side cross-sectional view showing an electronic control engine mount of the present invention.

※ Explanation of code for main part of drawing

21: electromagnet

22: cover body

23: fluid plate

24: second orifice

25,26: floating hole

27: opening and closing board

30: speed sensor

31: switching control unit

32: switch

The present invention for achieving the above object

In an engine mount in which a circular first orifice formed in a position in which two flow holes are symmetrical with each other between a liquid injection chamber and a liquid injection chamber,

A cover body in which an electromagnet is embedded is formed at the center upper end of the first orifice, and a fluid flow plate made of an elastic material is formed at the center lower end of the first orifice to form a second orifice, wherein a first flow hole is formed at the center of the cover body. And a second flow hole on the case where the flow plate is formed, and an opening and closing plate for opening and closing the first flow hole is installed below the electromagnet.

And, as a means for controlling the opening and closing operation of the opening and closing plate, a speed sensor for detecting the running speed of the vehicle, a switching control unit for outputting a control signal for switching control according to the amount of change in the traveling speed detected by the speed sensor and And a switch for supplying a battery voltage to the electromagnet by operating on the control signal input from the switching controller.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

2 is a side cross-sectional view showing the electronic control engine mount of the present invention.

According to the drawings, the present invention forms a separate cover body 22 at the upper end of the center of the first orifice 6 formed between the pouring chamber 4 and the subdivision chamber 5, and at the lower end thereof, The flow plate 23 made of ash was formed to constitute the second orifice 24.

At this time, the electromagnet 21 magnetized by the input power is formed on the cover body 22, and the first flow hole 25 is formed in the center of the cover body 22 to communicate with the injection chamber 4. In addition, a second flow hole 26 is formed on the outer case of the flow plate 23 so as to communicate with the sub-liquid chamber 5 so that the fluid in the injection liquid chamber 4 is first and second flow holes 25 and 26. ) To be transferred to the subdivision chamber (5).

In addition, when the electromagnet 21 is magnetized to generate a constant magnetic force by installing the opening and closing plate 27, which is a conductor, as the opening and closing means of the first flow hole 25, the electromagnet 21 is magnetized, While blocking the first flow hole 25 while being attached to the (21), the entire second orifice 24 is blocked.

In addition, as a means for controlling the driving of the opening and closing plate 27, by using the speed sensor 30 for detecting the traveling speed of the vehicle and the traveling speed data detected by the speed sensor 30 to change the amount of change in the traveling speed And a switching controller 31 for outputting a control signal for turning on the switch 32 when the amount of change in the running speed is greater than or equal to the calculation result. The battery is turned on by the control signal of the switching controller 31. (33) A switch 32 for supplying a voltage to the electromagnet 21 was configured so that the opening and closing operation of the opening and closing plate 27 was automatically controlled.

Incidentally, the same components as in the prior art are denoted by the same reference numerals to avoid duplicate explanation.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, since the driving speed change amount of the vehicle detected by the speed sensor 30 does not occur during idle rotation or constant speed driving, the switching controller 31 turns off the switch 32 so that the voltage of the battery 33 becomes the electromagnet 21. The opening and closing plate 27 is in a state struck below the second orifice 24, that is, the first flow hole 25 is opened, so as not to be supplied to the opening plate 27.

Accordingly, when the volume of the injection chamber 4 shrinks due to relatively small engine vibration generated during idle rotation or constant speed driving, the fluid in the injection chamber 4 flows through the flow holes 7 and 8 and the first orifice 6. At the same time, it is moved to the liquid-liquid chamber 5 through the first and second flow holes 25 and 26 and the second orifice 24 at the same time.

As described above, when the fluid in the injection chamber 4 moves to the subdivision chamber 5 through the first orifice 6 and the second orifice 24, the space of the entire orifice 6 and 24 becomes wider. Accordingly, the fluid resistance is reduced, so that the engine vibration generated finely during idle rotation or constant speed driving is effectively attenuated.

On the other hand, when the amount of change in the vehicle traveling speed detected by the speed sensor 30 is detected to be above a certain value, the switching controller 31 turns on the switch 32 as the amount of change in the vehicle running speed occurs above a certain value. The battery 33 voltage is supplied to the electromagnet 21 through the switch 32.

As described above, when a predetermined voltage is input to the electromagnet 21, the electromagnet 21 is magnetized to generate a predetermined magnetic force, and the opening / closing plate 27 is attached to the electromagnet 21 by the magnetic force. 1 flow hole 25 is blocked.

The blocking of the first flow hole 25 means that the second orifice 24 is blocked.

Accordingly, when a relatively large engine vibration generated during the deceleration or acceleration of the vehicle is applied to the pouring chamber 4, the fluid in the pouring chamber 4 flows to the flow holes 7 and 8 and the first as in the prior art. The orifice 6 is to be moved to the subdivision chamber 5.

That is, when a relatively large engine vibration generated due to a change in engine torque during deceleration or acceleration of the vehicle is applied to the injection chamber 4, the fluid resistance force is moved through the first orifice 6 to the injection chamber 5 only. That is, relatively large engine vibrations are effectively attenuated.

In other words, when a relatively large engine vibration occurs, the volume of the orifice is reduced so that the electromagnet 21 is magnetized to increase the fluid resistance so that the opening and closing plate 27 blocks the first flow hole 25. In this case, the fluid in the injection chamber 4 is moved to the sub-liquid chamber 5 only through the first orifice 6, and when a relatively small engine vibration occurs, the volume of the overall orifice is increased to reduce the fluid resistance. In order to cut off the power supplied to the electromagnet 21 so that the first flow hole 25 is opened, the fluid in the injection liquid chamber 4 flows through the first orifice 6 and the second orifice 24 to the subdivision chamber ( 5).

As described above, the present invention forms a second orifice in the center portion of the pouring chamber and the auxiliary liquid chamber, and constitutes a control means for controlling whether the second orifice is opened according to whether the vehicle is driven, and thus the vehicle condition and the driving condition. It is an electronically controlled engine mount that can provide optimum riding comfort by coping with engine vibration that changes accordingly.

Claims (2)

In the engine mount in which a circular first orifice 6 formed at a position in which two flow holes 7 and 8 are symmetrical with each other between the pouring chamber 4 and the auxiliary liquid chamber 5 is built-in, A cover body 22 having an electromagnet 21 embedded therein is formed at the center upper end of the first orifice 6, and a flow plate 23 made of an elastic material is formed at the center lower end of the first orifice 6 to form a second cover body 22. Comprising an orifice 24, the first flow hole 25 is formed in the center of the cover body 22, the second flow hole 26 is formed on the case in which the flow plate 23 is formed, Electronic control engine mount, characterized in that the opening and closing plate 27 for opening and closing the first flow hole (25) is installed below the electromagnet (21). The method of claim 1, As a means for controlling the opening and closing operation of the opening and closing plate 27, the speed sensor 30 for detecting the traveling speed of the vehicle and the control for switching control according to the amount of change in the traveling speed detected by the speed sensor 30 And a switch 32 for outputting a signal, and a switch 32 for supplying a battery 33 voltage to the electromagnet 21 by being operated on by a control signal input from the switching controller 31. Electronically controlled engine mount, characterized in that.