CN113482739A - Concave wheel rotor type air distribution mechanism - Google Patents
Concave wheel rotor type air distribution mechanism Download PDFInfo
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- CN113482739A CN113482739A CN202110554291.9A CN202110554291A CN113482739A CN 113482739 A CN113482739 A CN 113482739A CN 202110554291 A CN202110554291 A CN 202110554291A CN 113482739 A CN113482739 A CN 113482739A
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- concave wheel
- concave
- rotor
- angle
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/08—Shape of cams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Retarders (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a concave wheel rotor type air distribution mechanism which mainly comprises a concave wheel rotor and a linkage body; the concave wheel rotor comprises two concave wheels, a driven gear is arranged between the two concave wheels, and the three are fixedly connected into a whole and then arranged on the rotor bracket; the linkage body is step-shaped, the vertical edge of the step is inserted into the limiting frame on the side surface of the rotor bracket, the bottom layer of the step is provided with a U-shaped opening, and the top end of the valve is arranged on the U-shaped opening through the annular groove of the tappet rod; the top layer of the step is provided with a pressure spring and a contact which is attached to the concave wheel; the concave part of the concave wheel comprises a front section and a rear section, the front section of the concave part is provided with an open channel, the top of the open channel is provided with a narrow slit, and the contact is provided with a contact annular groove which is level to the narrow slit; the driven gear on the concave wheel rotor is meshed with the driving gear on the rotor driving shaft, the rotating speed of the driving gear is consistent with that of the crankshaft, and the radius of the driving gear is equal to half of that of the driven gear. The concave profile is designed for simple harmonic oscillation. The invention is unique and unique, accords with the principle, has high efficiency, energy saving, low abrasion, durability, and is simple and easy to implement.
Description
Technical Field
The invention relates to a valve actuating mechanism on a four-stroke engine, in particular to a concave wheel rotor type valve actuating mechanism.
Background
The valve actuating mechanism comprises a valve spring and a cam, the valve spring is important, but the energy consumption of the valve actuating mechanism is large, and more than 90% of the energy consumption of the valve actuating mechanism is consumed by the valve actuating mechanism; in addition, the pressure of 300-500N is applied to the cam, so that the crankshaft is not heavy, the abrasion to the cam is aggravated, and the service life of the engine is shortened. The energy consumption of the engine comprises heat dissipation, internal consumption and external work, the heat dissipation and the internal consumption are reduced by saving energy, the existing energy-saving measures are mostly implemented on the heat dissipation reduction, if the force is continuously exerted on the heat dissipation reduction, the effect is not obvious, and the article on the internal consumption reduction is made, wherein the best method is to modify the valve train.
Disclosure of Invention
The invention aims to overcome the defects of large energy consumption, large abrasion, short service life and unobvious existing energy-saving measures of the existing valve actuating mechanism, and provides a concave wheel rotor type valve actuating mechanism which is simple in structure, high in efficiency and energy-saving.
The purpose of the invention is realized by the following mode: the concave wheel rotor type air distribution mechanism mainly comprises a concave wheel rotor and a linkage body; the concave wheel rotor comprises two concave wheels, one is an air inlet concave wheel, the other is an air outlet concave wheel, a driven gear is arranged between the two concave wheels, the three are fixedly connected into a whole and then assembled on a rotating shaft through a bearing, and the whole is the concave wheel rotor; the concave wheel rotor is arranged between the two valve guide pipes through the rotor support; the linkage body is step-shaped, the vertical edge of the step is inserted into the limiting frame on the side surface of the rotor support, the bottom layer of the step is provided with a U-shaped opening, the top end of the valve is provided with a tappet annular groove, and the valve is arranged on the U-shaped opening of the linkage body through the tappet annular groove, so that the valve and the linkage body are connected into a whole; the top layer of the step is provided with a pressure spring and a contact which is attached to the concave wheel; the concave part of the concave wheel comprises a front section and a rear section, the front section of the concave part is provided with an open channel, the top of the open channel is provided with a through narrow slit, the contact is provided with a contact annular groove, and the position of the contact annular groove is flush with the narrow slit; the driven gear on the concave wheel rotor is meshed with the driving gear on the rotor driving shaft, the driving gear is connected with the crankshaft through a chain, the rotating speed of the driving gear is consistent with that of the crankshaft, and the radius of the driving gear is equal to half of that of the driven gear.
The molded line of the concave part of the concave wheel is designed according to simple harmonic vibration, the central angle corresponding to the concave part is called a molded line angle which is larger than 90 degrees, two points are arranged on the molded line, the two points correspond to an upper dead center and a lower dead center of a piston, the central angle clamped by the two points is called a stroke angle, the stroke angle is equal to 90 degrees, spaces clamped by two sides of the stroke angle and two sides of the molded line angle are respectively an advance angle and a retard angle, the advance angle of the air inlet concave wheel is alpha, the retard angle is beta, the advance angle of the air outlet concave wheel is gamma, and the retard angle is delta, when the air outlet concave wheel is assembled, the delta inner side of the air outlet concave wheel is superposed with the alpha inner side of the air inlet concave wheel, and the coincident line corresponds to the upper dead center of the piston.
The α is 7 °, β is 23 °, γ is 23 °, and δ is 7 °.
Grooves are formed in two sides of the linkage body, convex edges are arranged on two inner sides of the limiting frame, and the linkage body is inserted into the limiting frame along the convex edges through the grooves.
The pressure spring and the contact are arranged on the linkage body through a cover plate and a screw.
The invention has the following positive effects: the invention is unique and unique, accords with the principle, has high efficiency, energy saving, low abrasion, durability, and is simple and easy to implement.
Drawings
FIG. 1 is a view showing the structure of the present invention
FIG. 2 is a perspective view of the linkage body
FIG. 3 is a perspective view of a rotor spider
FIG. 4 is a schematic view of an open channel
FIG. 5 is a view showing a structure of a rotor of a concave wheel
In the figure: 1 linkage body 2 valve 3 concave wheel
4 driven gear 5 rotating shaft 6 rotor support
7 valve guide pipe 8 spacing frame 9U-shaped mouth
10 pressure spring 11 contact 12 open channel
13 narrow slit 14 contact annular groove 15 rotor driving shaft
16 driving gear 17 groove 18 rib
19 cover plate 20 screw
Detailed Description
As shown in fig. 1, the concave wheel rotor type valve actuating mechanism mainly comprises a concave wheel rotor and a linkage body 1, wherein the concave wheel rotor drives a valve 2 through the linkage body 1; the concave wheel rotor comprises two concave wheels 3, one is an air inlet concave wheel, the other is an air outlet concave wheel, a driven gear 4 is arranged between the two concave wheels, the three are fixedly connected into a whole and then assembled on a rotating shaft 5 through a bearing, and the whole is the concave wheel rotor; the concave wheel rotor is arranged between the two valve guide pipes 7 through the rotor bracket 6; the linkage body 1 is step-shaped (see figure 2), the vertical side of the step is inserted into a limit frame 8 on the side surface of the rotor bracket 6 to limit the linkage body to move up and down only in the frame (see figure 3), a U-shaped opening 9 is arranged at the bottom layer of the step, a tappet annular groove is arranged at the top end of the valve 2, and the valve 2 is arranged on the U-shaped opening 9 of the linkage body through the tappet annular groove, so that the valve 2 and the linkage body 1 are connected into a whole, but the valve rotation is not hindered; the top layer of the step is provided with a pressure spring 10 and a contact 11, the contact 11 is attached to the concave wheel 3, and the pressure spring 10 enables the contact 11 to have a pressing force on the concave wheel 3; the concave part of the concave wheel 3 comprises a front section and a rear section, the front section of the concave part is provided with an open channel 12 (see figure 5), the top of the open channel 12 is provided with a through narrow slit 13, the contact 11 is provided with a contact annular groove 14, the position of the contact annular groove 14 is level with the narrow slit 13, so that the contact annular groove 14 can enter the narrow slit 13, and the contact 11 enters the open channel 12 (see figure 4); the driven gear 4 on the concave wheel rotor is meshed with a driving gear 16 on a rotor driving shaft 15, the driving gear 16 is connected with a crankshaft through a chain, the rotating speed of the driving gear 16 is consistent with that of the crankshaft, and the radius of the driving gear 16 is equal to half of that of the driven gear 4, so that the rotating speed of the concave wheel rotor is equal to half of that of the crankshaft.
As shown in fig. 5, the profile of the concave portion of the concave wheel 3 is designed according to simple harmonic vibration, the central angle corresponding to the concave portion is called the profile angle, the profile angle is larger than 90 degrees, two points are arranged on the profile, the two points correspond to the top dead center and the bottom dead center of the piston, the central angle sandwiched by the two points is called the stroke angle, the stroke angle is equal to 90 degrees, the space between the two sides of the stroke angle and the two sides of the profile angle are respectively an advance angle and a retard angle, the advance angle of the intake concave wheel is alpha, the retard angle is beta, the advance angle of the exhaust concave wheel is gamma, and the retard angle is delta, when the exhaust concave wheel is assembled, the delta inner side of the exhaust concave wheel is overlapped with the alpha inner side (dotted line in the figure) of the intake concave wheel, the coincident line corresponds to the top dead center of the piston, when the exhaust stroke reaches the top dead center, the intake valve is opened alpha first, the exhaust valve is closed until the intake valve is opened alpha + delta, in this interval of α + δ degrees, the exhaust valve and the intake valve are simultaneously in the open state.
The α is 7 °, β is 23 °, γ is 23 °, and δ is 7 °.
Grooves 17 (shown in figure 2) are formed in two sides of the linkage body 1, ribs 18 (shown in figure 3) are formed in two inner sides of the limiting frame 8, the linkage body 1 is inserted into the limiting frame 8 along the ribs 18 through the grooves 17, and therefore the linkage body 1 can only move up and down in the limiting frame 8.
The compression spring 10 and the contact 11 are provided on the interlocking body 1 through a cover plate 19 and a screw 20 (see fig. 2).
The working process of the invention is as follows: the driving gear is driven by the crankshaft, the concave wheel rotor starts to work under the driving of the driving gear, when the open channel rotates to the contact position along with the concave wheel, the contact enters the open channel, the contact annular groove synchronously enters the narrow gap at the top of the channel, and when the concave wheel continues to rotate, the open channel drives the linkage body to move downwards to open the valve; when the concave wheel rotates again, the contact head will leave the open channel and lift the linkage body upwards along with the rotation of the concave wheel to close the valve; when the contact slides to the base circle of the concave wheel, the contact is tightly pressed on the concave wheel under the action of the pressure spring, so that the air valve is tightly closed to ensure that the air cylinder is air-tight, including air-tight in negative pressure and hot state. The working process shows that the concave wheel rotor integrates the functions of opening and closing the air valve and ensuring that the air cylinder does not leak air, and is a special and multifunctional excellent element.
The contact is important for the pressing force of the concave wheel, because when air is fed and exhausted, negative pressure of about 0.1-0.3 atmosphere exists in the cylinder, the negative pressure can cause air leakage of the cylinder, the pressing force can ensure that the air leakage does not occur when the cylinder is under the negative pressure, the pressing force can be calculated through the bottom area of the valve bottom cover, and if the bottom area is 10cm2And the pressing force is about 30N, and the pressure of the 30N is only one tenth of the pressure of the valve spring 300-500N, so that the abrasion is small, the service life of the concave wheel is prolonged, and the engine is more durable.
Structurally, the existing valve actuating mechanism is pressed on a camshaft, so that a crankshaft is not burdened, and a valve actuating module falls on a cylinder cover, so that the crankshaft is not burdened. The weight is put on the ground and pulled by a vehicle, the vehicle is a concave wheel rotor, the vehicle is pulled by a driving gear, actually a crankshaft, the crankshaft is easy to pull, the energy is saved, and particularly, the pulled weight is lighter than the original weight by more than 90%, and the crankshaft is easier.
When the concave wheel rotor and the linkage body are arranged on the rotor bracket, the whole body is a square and regular module which is similar to a pair of door locks, the linkage body is used as a lock tongue, the module can be called as a gas distribution module, the gas distribution module can be independently manufactured in a factory and then is arranged on a machine body, and the manufacturing and the installation of the gas distribution module are very simple and easy.
The most important characteristic of the energy-saving engine is high efficiency and energy saving, the energy-saving effect of the air distribution module can reach more than 10%, specifically, when the vehicle is running, the vehicle can only run for 100 kilometers originally by using the same amount of fuel oil, and then can run for 110 kilometers later, the distance is increased by 10 kilometers, and the energy-saving engine is high efficiency and energy-saving.
Claims (5)
1. The utility model provides a concave wheel rotor formula valve actuating mechanism which characterized in that: it mainly comprises a concave wheel rotor and a linkage body; the concave wheel rotor comprises two concave wheels, one is an air inlet concave wheel, the other is an air outlet concave wheel, a driven gear is arranged between the two concave wheels, the three are fixedly connected into a whole and then assembled on a rotating shaft through a bearing, and the whole is the concave wheel rotor; the concave wheel rotor is arranged between the two valve guide pipes through the rotor support; the linkage body is step-shaped, the vertical edge of the step is inserted into the limiting frame on the side surface of the rotor support, the bottom layer of the step is provided with a U-shaped opening, the top end of the valve is provided with a tappet annular groove, and the valve is arranged on the U-shaped opening of the linkage body through the tappet annular groove, so that the valve and the linkage body are connected into a whole; the top layer of the step is provided with a pressure spring and a contact which is attached to the concave wheel; the concave part of the concave wheel comprises a front section and a rear section, the front section of the concave part is provided with an open channel, the top of the open channel is provided with a through narrow slit, the contact is provided with a contact annular groove, and the position of the contact annular groove is flush with the narrow slit; the driven gear on the concave wheel rotor is meshed with the driving gear on the rotor driving shaft, the driving gear is connected with the crankshaft through a chain, the rotating speed of the driving gear is consistent with that of the crankshaft, and the radius of the driving gear is equal to half of that of the driven gear.
2. The port rotor valve train of claim 1, wherein: the molded line of the concave part of the concave wheel is designed according to simple harmonic vibration, the central angle corresponding to the concave part is called a molded line angle which is larger than 90 degrees, two points are arranged on the molded line, the two points correspond to an upper dead center and a lower dead center of a piston, the central angle clamped by the two points is called a stroke angle, the stroke angle is equal to 90 degrees, spaces clamped by two sides of the stroke angle and two sides of the molded line angle are respectively an advance angle and a retard angle, the advance angle of the air inlet concave wheel is alpha, the retard angle is beta, the advance angle of the air outlet concave wheel is gamma, and the retard angle is delta, when the air outlet concave wheel is assembled, the delta inner side of the air outlet concave wheel is superposed with the alpha inner side of the air inlet concave wheel, and the coincident line corresponds to the upper dead center of the piston.
3. The port rotor valve train of claim 2, wherein: the α is 7 °, β is 23 °, γ is 23 °, and δ is 7 °.
4. The port rotor valve train of claim 1, wherein: grooves are formed in two sides of the linkage body, convex edges are arranged on two inner sides of the limiting frame, and the linkage body is inserted into the limiting frame along the convex edges through the grooves.
5. The port rotor valve train of claim 1, wherein: the pressure spring and the contact are arranged on the linkage body through a cover plate and a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110554291.9A CN113482739B (en) | 2021-05-20 | 2021-05-20 | Concave rotor type valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110554291.9A CN113482739B (en) | 2021-05-20 | 2021-05-20 | Concave rotor type valve mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113482739A true CN113482739A (en) | 2021-10-08 |
| CN113482739B CN113482739B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110554291.9A Active CN113482739B (en) | 2021-05-20 | 2021-05-20 | Concave rotor type valve mechanism |
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| Country | Link |
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| CN (1) | CN113482739B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383885A (en) * | 2011-07-11 | 2012-03-21 | 王美霞 | Cam gas distribution mechanism and matched four-stroke internal combustion engine |
| CN102425467A (en) * | 2011-11-08 | 2012-04-25 | 王美霞 | Convex-concave disc lever type valve actuating mechanism and matched internal combustion engine |
| CN106939803A (en) * | 2017-03-06 | 2017-07-11 | 胡水净 | without valve spring four-stroke engine |
| CN108150238A (en) * | 2018-01-11 | 2018-06-12 | 北京涌阔科技有限公司 | Convex-concave wheel rotor twin-tub four-stroke engine |
| CN112127962A (en) * | 2020-08-29 | 2020-12-25 | 白茹 | Valve-spring-free valve actuating mechanism |
-
2021
- 2021-05-20 CN CN202110554291.9A patent/CN113482739B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383885A (en) * | 2011-07-11 | 2012-03-21 | 王美霞 | Cam gas distribution mechanism and matched four-stroke internal combustion engine |
| CN102425467A (en) * | 2011-11-08 | 2012-04-25 | 王美霞 | Convex-concave disc lever type valve actuating mechanism and matched internal combustion engine |
| CN106939803A (en) * | 2017-03-06 | 2017-07-11 | 胡水净 | without valve spring four-stroke engine |
| CN108150238A (en) * | 2018-01-11 | 2018-06-12 | 北京涌阔科技有限公司 | Convex-concave wheel rotor twin-tub four-stroke engine |
| CN112127962A (en) * | 2020-08-29 | 2020-12-25 | 白茹 | Valve-spring-free valve actuating mechanism |
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| Publication number | Publication date |
|---|---|
| CN113482739B (en) | 2023-10-10 |
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Effective date of registration: 20230911 Address after: Hengxi Town, Jiangning District, Nanjing City, Jiangsu Province, 211100 Applicant after: Nanjing Hengxi Economic and Technological Development Co.,Ltd. Address before: 100000 No. 44 Dengcao Hutong, Dongcheng District, Beijing Applicant before: Wang Meixia |
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