CN111520210B - Valve stroke adjustable device based on eccentric chute transmission principle - Google Patents
Valve stroke adjustable device based on eccentric chute transmission principle Download PDFInfo
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- CN111520210B CN111520210B CN202010353397.8A CN202010353397A CN111520210B CN 111520210 B CN111520210 B CN 111520210B CN 202010353397 A CN202010353397 A CN 202010353397A CN 111520210 B CN111520210 B CN 111520210B
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- rod
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- rocker arm
- fixedly connected
- eccentric
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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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0031—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of tappet or pushrod length
Abstract
The invention relates to the technical field of valve mechanisms and discloses a valve stroke adjustable device based on an eccentric sliding groove transmission principle, which comprises a cylinder cover, wherein the top of the cylinder cover is movably connected with an air chamber cover, the inside of the cylinder cover is slidably connected with an ejector rod, the outside of the ejector rod is fixedly connected with a cross rod, the inside of the cross rod is slidably connected with a slide block, the outside of the slide block is slidably connected with an adjusting rod, the outside of the adjusting rod is slidably connected with a guide rod, the outside of the guide rod is fixedly connected with a telescopic motor, the outside of the telescopic motor is movably connected with a push rod, the outside of the adjusting rod is movably connected with a fluted disc, the slide block is ensured to slide stably on the adjusting rod by matching use of the adjusting rod and the guide rod, the adjusting rod is prevented from shaking to cause unstable, the stable operation of the generator is ensured.
Description
Technical Field
The invention relates to the technical field of valve mechanisms, in particular to a valve stroke adjustable device based on an eccentric chute transmission principle.
Background
The internal combustion engine is a power machine, it is through making the fuel burn in the machine, and the heat energy that it emits is the heat engine of the power directly converted into, the valve is the main part to control the air admission of the engine, the function of the valve is responsible for inputting the air into the engine and discharging the exhaust gas after burning specially, from the engine structure, divide into inlet valve and exhaust valve, the function of the inlet valve is to suck the air into the engine, mix with fuel and burn; the exhaust valve is used for discharging combusted waste gas and dissipating heat.
However, the valve lift of the conventional gasoline engine is fixed and invariable, that is, only one cam profile of the camshaft is provided, which makes it impossible for the engine to obtain good response in both high speed and low speed regions, and the valve lift of the conventional gasoline engine is designed by the cam profile and is selected for the balance of the engine under the full working condition, so that the engine cannot obtain the optimal high speed efficiency and the optimal low speed torque, but obtains the most balanced performance under the full working condition, but also causes pumping loss in both the high speed region and the low speed region, and cannot obtain the optimal effect.
In order to solve the above problems, the inventor provides a valve stroke adjustable device based on the eccentric chute transmission principle, which has the advantages of automatically adjusting the valve stroke, ensuring that the engine can ensure the optimal pumping effect in both a high-speed area and a low-speed area, thereby ensuring the working performance of the engine and ensuring that the engine can obtain the optimal high-speed efficiency and low-speed efficiency in both the high-speed area and the low-speed area.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: an air valve stroke adjustable device based on an eccentric sliding groove transmission principle comprises an air cylinder cover, an air chamber cover, an ejector rod, a cross rod, a sliding block, an adjusting rod, a guide rod, a telescopic motor, a push rod, a fluted disc, an eccentric sliding groove, a main gear, a connecting sleeve, a first rocker arm, a second rocker arm, a rocker arm spring, a spring fixing block, a connecting rod, a reset spring and an air valve.
The positions and the connection relations of the structures are as follows:
the top of the cylinder cover is movably connected with an air chamber cover, the inside of the cylinder cover is slidably connected with an ejector rod, the outside of the ejector rod is fixedly connected with a cross rod, the inside of the cross rod is slidably connected with a slide block, the outside of the slide block is slidably connected with an adjusting rod, the outside of the adjusting rod is slidably connected with a guide rod, the outside of the guide rod is fixedly connected with a telescopic motor, the outside of the telescopic motor is movably connected with a push rod, the outside of the adjusting rod is movably connected with a fluted disc, the surface of the fluted disc is provided with an eccentric chute, the outside of the fluted disc is engaged and connected with a main gear, the top of the ejector rod is hinged and connected with a connecting sleeve, the inside of the connecting sleeve is hinged and connected with a first rocker arm, the outside of the first rocker arm is movably connected with a, the bottom swing joint of second rocking arm has the connecting rod, the outside cup joint of connecting rod is connected with reset spring, the bottom fixed connection of connecting rod has the valve.
Preferably, a transverse sliding groove is formed in the transverse rod, and the sliding block is connected to the inside of the transverse sliding groove in a sliding mode.
Preferably, the sliding block penetrates through the adjusting rod, and two ends of the sliding block are respectively connected to the inner parts of the transverse sliding groove and the eccentric sliding groove in a sliding mode.
Preferably, the guide rod is an arc-shaped rod, the circle center of the guide rod is collinear with the axis of the fluted disc, and the guide rod is fixedly connected with the cylinder cover.
Preferably, the push rod is movably connected inside the guide rod, and the push rod is movably connected with the adjusting rod.
Preferably, the first rocker arm and the second rocker arm are movably connected inside the air chamber cover.
Preferably, the spring fixing block is fixedly connected to the inside of the air chamber cover.
Preferably, the reset spring is sleeved and connected outside the connecting rod, the top end of the reset spring is fixedly connected with the connecting rod, and the bottom end of the reset spring is fixedly connected with the cylinder cover.
Advantageous effects
Compared with the prior art, the invention provides an air valve stroke adjustable device based on an eccentric chute transmission principle, which has the following beneficial effects:
1. this valve stroke adjustable device based on eccentric spout transmission principle uses through the cooperation of adjusting pole and guide arm to guarantee that the slider is at the regulation pole stability of sliding, thereby avoid adjusting the pole and rock and lead to the slider stroke unstability, thereby reach the stable effect of assurance valve stroke, make the pump gas of engine stable, guarantee the steady operation of generator.
2. This valve stroke adjustable device based on eccentric spout transmission principle uses through the cooperation of flexible motor and push rod to the effect of adjusting the pole gradient reaches the effect of adjusting the valve stroke, makes the engine can both obtain good pump gas response in high-speed district and low-speed district, and it is extravagant to reduce the pump gas, effective high-speed efficiency and the low-speed efficiency of engine.
Drawings
FIG. 1 is a schematic view of the overall connection of the structure of the present invention;
FIG. 2 is an enlarged view of the connection of a portion A of a fluted disc, an eccentric chute, an adjusting rod, a sliding block, a cross bar, a top bar and a guide bar in the structure of FIG. 1;
FIG. 3 is a schematic connection diagram of the ejector rod, the connecting sleeve, the first rocker arm, the second rocker arm, the rocker arm spring, the spring fixing block, the connecting rod and the return spring of the structure of the invention;
FIG. 4 is a schematic view showing a state where the valve stroke is shortened in the structure of the present invention.
In the figure: 1. a cylinder head; 2. an air chamber cover; 3. a top rod; 4. a cross bar; 5. a slider; 6. adjusting a rod; 7. a guide bar; 8. a telescopic motor; 9. a push rod; 10. a fluted disc; 11. an eccentric chute; 12. a main gear; 13. connecting sleeves; 14. a first rocker arm; 15. a second rocker arm; 16. a rocker spring; 17. a spring fixing block; 18. a connecting rod; 19. a return spring; 20. and (4) air valves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a valve stroke adjusting device based on an eccentric sliding groove transmission principle includes a cylinder cover 1, an air chamber cover 2, a push rod 3, a cross rod 4, a slider 5, an adjusting rod 6, a guide rod 7, a telescopic motor 8, a push rod 9, a fluted disc 10, an eccentric sliding groove 11, a main gear 12, a connecting sleeve 13, a first rocker arm 14, a second rocker arm 15, a rocker arm spring 16, a spring fixing block 17, a connecting rod 18, a return spring 19, and a valve 20.
The positions and the connection relations of the structures are as follows:
the top of the cylinder cover 1 is movably connected with an air chamber cover 2, the inside of the cylinder cover 1 is slidably connected with an ejector rod 3, the outside of the ejector rod 3 is fixedly connected with a cross rod 4, the inside of the cross rod 4 is provided with a transverse chute, the slide block 5 is slidably connected inside the transverse chute, the inside of the cross rod 4 is slidably connected with a slide block 5, the outside of the slide block 5 is slidably connected with an adjusting rod 6, the slide block 5 penetrates through the adjusting rod 6, the two ends of the slide block 5 are respectively slidably connected inside the transverse chute and an eccentric chute 11, the outside of the adjusting rod 6 is slidably connected with a guide rod 7, the guide rod 7 is an arc-shaped rod, the circle center of the guide rod 7 is collinear with the axis of a fluted disc 10, the guide rod 7 is fixedly connected with the cylinder cover 1, the slide block 5 is stably slid on the adjusting rod 6 by, make the pump gas of engine stable, guarantee the steady operation of generator, the outside fixedly connected with flexible motor 8 of guide arm 7, the outside swing joint of flexible motor 8 has push rod 9, push rod 9 swing joint is in the inside of guide arm 7, and push rod 9 and regulation pole 6 swing joint, use through the cooperation of flexible motor 8 and push rod 9, thereby reach the effect of adjusting the regulation pole 6 gradient, reach the effect of adjusting the valve 20 stroke, make the engine can both obtain good pump gas response in high-speed district and low-speed district, it is extravagant to reduce the pump gas, the high-speed efficiency and the low quick-acting rate of effective engine, the outside swing joint of regulation pole 6 has fluted disc 10, eccentric spout 11 has been seted up on the surface of fluted disc 10, the outside meshing of fluted disc 10 is connected with master gear.
The articulated adapter sleeve 13 that is connected with in top of ejector pin 3, the inside articulated first rocking arm 14 that is connected with of adapter sleeve 13, the outside swing joint of first rocking arm 14 has second rocking arm 15, the equal swing joint of first rocking arm 14 and second rocking arm 15 is in the inside of air chamber cover 2, the outside fixedly connected with rocker spring 16 of second rocking arm 15, rocker spring 16 keeps away from the one end fixedly connected with spring fixed block 17 of second rocking arm 15, spring fixed block 17 fixed connection is in the inside of air chamber cover 2, the bottom swing joint of second rocking arm 15 has connecting rod 18, the outside of connecting rod 18 is cup jointed and is connected with reset spring 19, reset spring 19 cup joints the outside at connecting rod 18, and reset spring 19's top and connecting rod 18 fixed connection, reset spring 19's bottom and 1 fixed connection of cylinder cap, the bottom fixedly connected with valve 20 of connecting rod.
The working process and principle are that during working, because the main gear 12 is meshed with the fluted disc 10, the eccentric chute 11 is arranged on the surface of the fluted disc 10, the slider 5 is slidably connected inside the eccentric chute 11, the slider 5 penetrates through the adjusting rod 6, two ends of the slider 5 are respectively slidably connected inside the transverse chute arranged on the cross bar 4 and the eccentric chute 11, the adjusting rod 6 is movably connected with the fluted disc 10, and the adjusting rod 6 is movably connected with the guide bar 7, so the main gear 12 drives the fluted disc 10 to rotate, the fluted disc 10 drives the eccentric chute 11 to rotate, the eccentric chute 11 drives the slider 5 to slide inside the eccentric chute 11, the slider 5 slides inside the adjusting rod 6 and the cross bar 4, and under the action of the adjusting rod 6, the slider 5 drives the cross bar 4 to reciprocate.
Because the cross rod 4 is fixedly connected with the ejector rod 3, the ejector rod 3 is hinged with the connecting sleeve 13, the connecting sleeve 13 is hinged with the first rocker arm 14, the first rocker arm 14 is hinged with the second rocker arm 15, and the first rocker arm 14 and the second rocker arm 15 are both movably connected in the air chamber cover 2, when the cross rod 4 rises, the connecting sleeve 13 is driven to rise, the connecting sleeve 13 drives the first rocker arm 14 to rotate, the first rocker arm 14 presses against the second rocker arm 15, and because the second rocker arm 15 is fixedly connected with the rocker arm spring 16, the rocker arm spring 16 is fixedly connected with the spring fixing block 17, the spring fixing block 17 is fixedly connected in the air chamber cover 2, when the second rocker arm 15 rotates downwards, the rocker arm spring 16 is compressed, because the second rocker arm 15 is movably connected with the connecting rod 18, the connecting rod 18 is fixedly connected with the air valve 20, and the return spring 19 is sleeved outside the connecting rod 18, and the top end of the return spring, the bottom end of the return spring 19 is fixedly connected with the cylinder head 1, so that when the second rocker arm 15 rotates downwards, the second rocker arm 15 presses the connecting rod 18, the connecting rod 18 compresses the return spring 19 and simultaneously drives the valve 20 to move downwards, and the air intake or exhaust process is completed.
And when the stroke of the valve 20 needs to be adjusted, the telescopic motor 8 is started, because the telescopic motor 8 is movably connected with the push rod 9, the push rod 9 is movably connected with the adjusting rod 6, the telescopic motor 8 drives the push rod 9 to move, the push rod 9 drives the adjusting rod 6 to rotate around the axis of the fluted disc 10, so that the inclination angle of the adjusting rod 6 is changed, the inclination angle of the sliding block 5 in the adjusting rod 6 is changed, the lift range of the sliding block 5 driving the cross rod 4 is changed, and similarly, the stroke of the cross rod 4 driving the valve 20 is changed, so that the effect of adjusting the stroke of the valve 20 is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an adjustable device of valve stroke based on eccentric spout transmission principle, includes cylinder head (1), its characterized in that: the top of the cylinder cover (1) is movably connected with an air chamber cover (2), the inside of the cylinder cover (1) is slidably connected with a push rod (3), the outside of the push rod (3) is fixedly connected with a cross rod (4), the inside of the cross rod (4) is slidably connected with a slide block (5), the outside of the slide block (5) is slidably connected with an adjusting rod (6), the outside of the adjusting rod (6) is slidably connected with a guide rod (7), the outside of the guide rod (7) is fixedly connected with a telescopic motor (8), the outside of the telescopic motor (8) is movably connected with a push rod (9), the outside of the adjusting rod (6) is movably connected with a fluted disc (10), the surface of the fluted disc (10) is provided with an eccentric sliding chute (11), the outside of the fluted disc (10) is meshed with a main gear (12), and the, a first rocker arm (14) is hinged and connected to the inside of the connecting sleeve (13), a second rocker arm (15) is movably connected to the outside of the first rocker arm (14), a rocker arm spring (16) is fixedly connected to the outside of the second rocker arm (15), a spring fixing block (17) is fixedly connected to one end, far away from the second rocker arm (15), of the rocker arm spring (16), a connecting rod (18) is movably connected to the bottom of the second rocker arm (15), a return spring (19) is connected to the outside of the connecting rod (18) in a sleeved mode, and a valve (20) is fixedly connected to the bottom of the connecting rod (18); the push rod (9) is movably connected inside the guide rod (7), and the push rod (9) is movably connected with the adjusting rod (6); a transverse sliding groove is formed in the transverse rod (4), and the sliding block (5) is connected to the inner part of the transverse sliding groove in a sliding manner; the sliding block (5) penetrates through the adjusting rod (6), and two ends of the sliding block (5) are respectively connected to the inner parts of the transverse sliding groove and the eccentric sliding groove (11) in a sliding mode.
2. The device of claim 1, wherein the valve stroke is adjustable based on the eccentric chute transmission principle, and the device comprises: the guide rod (7) is an arc-shaped rod, the circle center of the guide rod (7) is collinear with the axis of the fluted disc (10), and the guide rod (7) is fixedly connected with the cylinder cover (1).
3. The device of claim 1, wherein the valve stroke is adjustable based on the eccentric chute transmission principle, and the device comprises: the first rocker arm (14) and the second rocker arm (15) are movably connected inside the air chamber cover (2).
4. The device of claim 1, wherein the valve stroke is adjustable based on the eccentric chute transmission principle, and the device comprises: the spring fixing block (17) is fixedly connected inside the air chamber cover (2).
5. The device of claim 1, wherein the valve stroke is adjustable based on the eccentric chute transmission principle, and the device comprises: reset spring (19) cup joints the outside of connecting rod (18) and connects, and the top and connecting rod (18) fixed connection of reset spring (19), the bottom and cylinder cap (1) fixed connection of reset spring (19).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010353397.8A CN111520210B (en) | 2020-04-29 | 2020-04-29 | Valve stroke adjustable device based on eccentric chute transmission principle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010353397.8A CN111520210B (en) | 2020-04-29 | 2020-04-29 | Valve stroke adjustable device based on eccentric chute transmission principle |
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| CN111520210B true CN111520210B (en) | 2021-05-28 |
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| KR100534184B1 (en) * | 2004-05-24 | 2005-12-07 | 현대자동차주식회사 | Variable valve lift device for vehicle |
| CN100575683C (en) * | 2008-08-15 | 2009-12-30 | 黎伟权 | A kind of engine air valve lift stepless regulating mechanism |
| CN102678216B (en) * | 2011-03-08 | 2016-03-09 | 朱譞晟 | The full Variable Valve Time of variable linear chute and lift mechanisms |
| CN103850746B (en) * | 2014-02-28 | 2015-12-02 | 天津大学 | A kind of variable air valve lift apparatus of based upon activities cam |
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| CN204827575U (en) * | 2015-07-22 | 2015-12-02 | 北汽福田汽车股份有限公司 | Valve lift adjustment mechanism and vehicle |
| CN110295967A (en) * | 2019-06-28 | 2019-10-01 | 广汽三菱汽车有限公司 | Continuous variable air valve lift apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420912A (en) * | 2013-08-29 | 2015-03-18 | Fev有限责任公司 | Valve Control For Internal Combustion Engine And Internal Combustion Engine |
| CN107503818A (en) * | 2017-06-13 | 2017-12-22 | 宝沃汽车（中国）有限公司 | Valve assembly, engine and automobile |
| EP3444451A1 (en) * | 2017-08-18 | 2019-02-20 | MAN Truck & Bus AG | Power transmission device for variably controlling valve |
| CN208431041U (en) * | 2018-06-25 | 2019-01-25 | 常州机电职业技术学院 | Internal-combustion piston engine continuous variable air valve lift apparatus |
| CN210033555U (en) * | 2019-06-26 | 2020-02-07 | 吉林大学 | Device capable of simultaneously changing timing and lift of engine valve |
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Effective date of registration: 20210508 Address after: 224300 no.333-2, Renmin West Road, Sheyang Economic Development Zone, Yancheng City, Jiangsu Province Applicant after: Jiangsu Sainai Valve Co.,Ltd. Address before: 311100 Henan No.48, group 1, xitanghe village, Liangzhu Town, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: Shi Hong |
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