CN209671082U

CN209671082U - Automobile engine variable cycle system

Info

Publication number: CN209671082U
Application number: CN201620398591.7U
Authority: CN
Inventors: 陈红; 莫嘉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2019-11-22
Anticipated expiration: 2026-04-29

Abstract

This stroke is a kind of automobile engine variable cycle system；In running car, the system is after automobile enters and hangs shelves sliding state, it can in time make to become circulation rocker arm and inlet valve rocker links together shake, become the driving for recycling cam to make inlet valve rocker both obey the driving of admission cam or obey, in former induction stroke, it is driven by admission cam and opens inlet valve, in former compression stroke and former expansion stroke, open inlet valve by becoming circulation actuated by cams；In exhauxt valve opens, becomes circulation cam with driving is stopped and become circulation rocker arm, IC Intake Valve Closes.Make engine splashed by original air inlet, compression, burning rise, the four-stroke cycle that is vented becomes the two-stroke cycle of air inlet, exhaust；To make automobile can be in the case where not changing former driver behavior habit, the engine drag drop cause for making to hang when shelves slide is minimum, driving oil consumption is reduced to reduce car resistance to the maximum extent, but also do not influence the braking reliability of former vehicle, efficiency when not increasing operation content again, and electricity generation efficiency, efficiency of air conditioner being made to be maintained at corresponding speed；As long as stepping on the throttle pedal or clutch riding boogie board or braking riding boogie board, engine becomes four-stroke cycle by two-stroke cycle automatically again.

Description

Automobile engine variable cycle system

One, technical field

The utility model relates to a kind of automobile engine variable cycle system, its effect is to follow four strokes of engine Ring becomes two-stroke cycle operating when operating at automobile slide, i.e., in automobile slide, cycle of engine operating becomes under piston Air-breathing when row, the two-stroke cycle operating being vented when piston is enterprising, to reduce engine drag when automobile slide automatically, thus Driving oil consumption is reduced under the premise of not changing former vehicle brake efficiency and reliability.

Two, background techniques

Currently, in well known motoring condition, especially truck, sliding state account for automobile total run time or 30% or more of mileage travelled, the method for reducing engine drag in sliding state have: idling neutral gear slides, and forced idling is hung Shelves slide, and close engine neutral gear and slide, and close throw the engine into gear and slide, and close throw the engine into gear stepping on clutch and slide.

Various sliding modes all respectively have unsatisfactory place:

Idling neutral position sliding, engine operate under idling, this method coasting distance is long, and oil-saving effect is preferable, but period is sent out Though motivation still idling oil consumption starts to need to carry out operation out of supply, terminates hang shelves and operate, electricity generation efficiency, efficiency of air conditioner Maintain idling area.

Forced idling, which is put into gear, to be slided, and no requirement (NR) in operation, braking reliability is constant, but coasting distance is short, and fuel-economizing is unobvious.

It closes engine neutral gear to slide, is that gear lever is put into neutral gear position, by engine misses, when not needing to slide Engine is restarted, gear lever is linked into gear appropriate.This mode slided can save idle oil consumption when sliding, section Oily effect is good.The disadvantage is that: it is troublesome in poeration, vehicle braking reliability is reduced, is not generated electricity, without air-conditioning.

It closes throw the engine into gear to slide, manual control engine to open, guard's valve, it is troublesome in poeration, and coasting distance is short, section Oil is unobvious.

It closes throw the engine into gear stepping on clutch pedal to slide, disengages reasonable match system, shift gear invariant position will Engine misses slide, and open ignition switch therebetween, when not sliding, while lifting clutch pedal and can continue to travel.This Method oil-saving effect is good, easy to use, the disadvantage is that increasing labor intensity, and larger to wearing from release bearing containing device, increases Failure rate does not generate electricity, without air-conditioning to increase automobilism cost during sliding.

Three, summary of the invention

In order to overcome many disadvantages of the existing present automobile in sliding state, the utility model provides a kind of car engine Machine variable cycle system, when which can make automobile enter extension shelves sliding state, automobile engine circulation pattern capable of automatic changing, By original: air-breathing, compression, burning splash rise, the four-stroke cycle Mode change that is vented is at: air-breathing, exhaust, air-breathing, exhaust Two-stroke cycle mode.

The technical solution adopted in the utility model is: by camshaft, the first inlet valve rocker, the second inlet valve rocker, becoming Circulation rocker arm, timing piston, the first synchronous piston, the second synchronous piston, stops piston, reset spring, hollow shakes retaining spring Arm axle, solenoid valve, electronic oil pump, pressure maintaining valve, becomes circulating controling circuit composition at machine oil pipe.Camshaft is equipped with the first air inlet Cam, the second admission cam become circulation cam；Becoming circulation cam can drive in automobile engine original compression stroke and former expansion stroke Dynamic inlet valve rocker opens inlet valve；First inlet valve rocker is equipped with the first positioning and floats platform and the first synchronous piston hole, and second Inlet valve rocker, which is equipped with second and positions, to float platform and stops piston hole, becomes circulation rocker arm equipped with locating platform and second and synchronizes work Consent is equipped with retaining spring becoming between circulation rocker arm and cylinder head, and one end of retaining spring heads on change circulation rocker arm, another End heads on cylinder head；Positioning will not be kept flat under the action of retaining spring with change circulation cam contact as long as becoming circulation rocker arm Platform keeps floaing platform with the first positioning and the second positioning platform that floats contacts, to keep the first synchronous piston hole and the second synchronous piston hole And the center line of piston hole is stopped to be overlapped；First synchronous piston hole has oil duct to communicate with the oil hole on rocker arm shaft hollow oil duct, Timing piston and the first synchronous piston are installed in first synchronous piston hole；Stop to be equipped in piston hole and stops piston and reset Spring；The second synchronous piston is installed in second synchronous piston hole；First inlet valve rocker, becomes circulation at the second inlet valve rocker Rocker arm is all mounted on rocker arm shaft, and installation, which is matched, is combined into clearance fit；Rocker arm shaft is equipped with hollow oil duct；Machine oil pipe is connected to hollow simultaneously Oil duct, the A interface of solenoid valve, electronic oil pump oil outlet；A pressure maintaining valve, solenoid valve and motor are mounted on machine oil pipe Being turned on or off for the power circuit of oil pump is controlled by change circulating controling circuit.

When engine is in power output, admission cam in camshaft is shaken by driving inlet valve rocker, make into Valve is opened in suction stroke, cylinder air-breathing；Change circulation actuated by cams in camshaft becomes circulation rocker arm and makees invalid freedom It shakes.

When automobile enters extension shelves sliding state and needs to reduce engine running resistance, stepped on as long as driver does not step on the gas Plate, clutch pedal, brake pedal, engine are automatically stopped fuel supply, become circulating controling circuit and enable electric motor oil in due course Pump out machine oil, with push timing piston to push the first synchronous piston, the second synchronous piston, make the first inlet valve rocker, After second inlet valve rocker and change circulation rocker arm are connected, both starting inlet valve with the admission cam driving in camshaft It is opened when machine original induction stroke；Also actuated by cams is recycled with the change in camshaft, keeps inlet valve also in former compression stroke It opens, by outside the air discharge cylinder in cylinder, engine is enabled, without the air in compression cylinder, to reduce in former compression stroke The inertia kinetic energy for consuming automobile closes inlet valve when former compression stroke ends；It splashes and rises after stroke starts in original, become circulation cam Driving becomes circulation rocker arm, the first inlet valve rocker, the second inlet valve rocker but also makes IO Intake Valve Opens to reduce piston downlink not only Negative pressure resistance, until becoming circulation cam, i.e. stopping driving becoming circulation rocker arm, the first inlet valve shakes while exhauxt valve opens Arm, the second inlet valve rocker make IC Intake Valve Closes.When automobile is in non-extension shelves sliding state, becomes circulating controling circuit and enable in due course Electronic oil pump stopping pumps out machine oil, and sheds oil pressure, immediately the first synchronous piston, the second synchronous piston reset spring work Change circulation rocker arm is set to release interaction relation with the first inlet valve rocker, the second inlet valve rocker immediately under, engine restores again Four-stroke cycle mode.

The utility model has the advantages that: vehicle in the reliability for not changing the original braking of vehicle, does not change when extension shelves are slided In the case where becoming the normal driver behavior habit of former vehicle, not having to neutral gear, do not have to stepping on clutch, automobile can not change corresponding speed Efficiency of air conditioner, do not change the electricity generation efficiency of corresponding speed, for engine without compressing gas in the jar, fuel-saving efficiency is high.

Four, Detailed description of the inventions

The utility model is described in further detail with reference to the accompanying drawing:

Fig. 1 is the camshaft of the utility model and the relative bearing of each cam and corresponding direction of rotation schematic diagram；

Fig. 2 is that each cam of the utility model and the corresponding relationship of each rocker arm and rocker arm and rocker arm shaft part section are illustrated Figure；

Fig. 3 is second inlet valve rocker of the utility model and the relative positional relationship schematic diagram of valve and admission cam；

Fig. 4 is first inlet valve rocker and valve and the relative positional relationship schematic diagram into cam of the utility model；

Fig. 5 is the change circulation rocker arm of the utility model and the corresponding position relation schematic diagram for becoming circulation cam；

Fig. 6 is the movable control system signal of timing piston, the first synchronous piston, the second synchronous piston of the utility model Figure.

In figure: 1. camshafts, 2. first admission cams, 3. become circulation cam, the 4, second admission cam, 5. first inlet valves Rocker arm, 6. become circulation rocker arm, and 7. second inlet valve rockers, 8. rocker arm shafts, 9. oil holes, 10. timing pistons, 11. first is synchronous Piston, 12. hollow oil ducts, 13. first positioning are floatd platform, 14. second synchronous pistons, and 15. second positioning are floatd platform, 16. oil ducts, and 17. Reset spring, 18. stop piston, and 20. stop piston hole, and 21. first synchronous piston holes, 23. cylinder head, 24. position planes, 25. the second synchronous piston hole, 26. retaining springs, 27. solenoid valves, 28. valve core reseting springs, 29. spools, 30. line solenoid valves Circle, 31. become circulating controling circuit, 32. machine oil pipes, 33. electronic oil pumps, 34. pressure maintaining valves.

Five, specific embodiments

Automobile engine variable cycle system is by camshaft (1), the first inlet valve rocker (5), the second inlet valve rocker (7), become circulation rocker arm (6), retaining spring (26), timing piston (10), the first synchronous piston (11), the second synchronous piston (14), stop piston (18), reset spring (17), rocker arm shaft (8), machine oil pipe (32), solenoid valve (27), electronic oil pump (33), pressure maintaining valve (34), change circulating controling circuit (31) composition.

As shown in Figure 1, camshaft (1) is equipped with the first admission cam (2), the second admission cam (4) and becomes circulation cam (3), n display in direction of rotation becomes circulation cam (3) and the corresponding position of the first admission cam (2), the second admission cam (4) closes System.

As shown in Fig. 2, the effect of the first admission cam (2) and the second admission cam (4) is: being driven respectively in induction stroke Dynamic first inlet valve rocker (5) and the second inlet valve rocker (7)；The effect for becoming circulation cam (3) is: compressing and rushes in engine original Driving becomes circulation rocker arm (6) when journey and former expansion stroke；First inlet valve rocker (5), becomes circulation at the second inlet valve rocker (7) Rocker arm (6) is all mounted on rocker arm shaft (8), and installation, which is matched, is combined into clearance fit；The hollow oil duct (12) of rocker arm shaft (8) is equipped with machine Oilhole (9) is simultaneously opposite with oil duct (16) mouth in the first inlet valve rocker (5), is equipped in the first synchronous piston hole (21) Timing piston (10) and the first synchronous piston (11), the first inlet valve rocker (5) is equipped with the first positioning and floats platform (13), first When synchronous piston (11) does not enter into the second synchronous piston hole (25), and it is convex in circulation is become without contact to become circulation rocker arm (6) Take turns (3) in the state of, first positioning float platform (13) be all with become circulation rocker arm (6) on positioning plane (24) contact, to make First synchronous piston hole (21) is overlapped with the center line in the second synchronous piston hole (25) become in circulation rocker arm (6).Second air inlet Door rocker arm (7), which is equipped with second and positions, to float platform (15) and stops piston hole (20), does not enter into resistance in the second synchronous piston (14) When keeping off piston hole (20), and become circulation rocker arm (6) in the state of becoming circulation cam (3) without contact, second positions the platform that floats It (15) is all to be contacted with the positioning plane (24) become in circulation rocker arm (6), to make the second synchronous piston hole (25) and stop to live The center line of consent (20) is overlapped, and is stopped piston hole (20) to be provided with and is stopped piston (18) and reset spring (17).

As shown in figure 3, the second inlet valve rocker (7) is mounted on rocker arm shaft (8), when one end is by the second admission cam (4) Driving is when lifting, the other end then opens downwards inlet valve；Second inlet valve rocker (7) is equipped with the second synchronous piston hole (20).

As shown in figure 4, the first inlet valve rocker (5) is mounted on rocker arm shaft (8), when one end is by the first admission cam (2) Driving is when lifting, the other end then opens downwards inlet valve, and the second inlet valve rocker (5) is equipped with the first synchronous piston hole (21), the One synchronous piston hole (21) connection oil duct (16).

It is mounted on rocker arm shaft (8) as shown in figure 5, becoming circulation rocker arm (6), when one end is driven lift by circulation cam (3) is become Rise when, the other end then downwards compress retaining spring (26)；When becoming circulation rocker arm (6) not with circulation cam (3) contact is become, installation The positioning plane (24) for becoming circulation rocker arm (6) is popped up and is positioned with first by the retaining spring (26) on cylinder head (23) Float platform (13) and second positioning float platform (15) contact, thus realize the first synchronous piston hole (21), the second synchronous piston hole (25), The center line of piston hole (20) is stopped to be overlapped.

As shown in fig. 6, machine oil pipe (32) is connected to A interface, the electronic oil pump of hollow oil duct (12), solenoid valve (27) simultaneously (33) oil outlet；A pressure maintaining valve (34), electromagnetic valve coil (30) and electronic oil pump (33) are mounted on machine oil pipe (32) Power circuit be turned on or off be by change circulating controling circuit (31) control.

The course of work of the utility model；

1. automobile is in driving status, and do not enter into when hanging shelves sliding state, becomes circulating controling circuit (31) and disconnect Machine oil is not pumped into machine oil pipe by the power circuit of electromagnetic valve coil (30) and electronic oil pump (33), electronic oil pump (33) (32), spool (29) is under the action of valve core reseting spring (28) in the A interface and B interface connected state for making solenoid valve (27) Position, the machine oil in solenoid valve (27) and machine oil pipe (32) flows back into engine sump tank by B interface at this time, because without Oil pressure acts on timing piston (10), stops piston (18) under the action of reset spring (17) by the second synchronous piston (14) Interception is stopping except piston hole (20), and at the same time, the second synchronous piston (14) also intercepts the first synchronous piston (11) Except second synchronous piston hole (25)；Due to the limited length of reset spring (17), stop piston (18) that second can't be entered Synchronous piston hole (25), thus the second synchronous piston (14) will not enter the first synchronous piston hole (21), at this point, the first air inlet Door rocker arm (5) shakes under the driving of the first admission cam (2) and the second admission cam (4) with the second inlet valve rocker (7), Simultaneously first positioning float platform (13) and second positioning float platform (15) under the action of, also make become circulation rocker arm (6) in company with shake, from And makes the first synchronous piston hole (21), the second synchronous piston hole (25) and the center line of piston hole (20) is stopped to be overlapped；When change follows For rocker arm (6) under the driving for becoming circulation cam (3), locating platform (24) positions float platform (13), the second locating platform with first (15) after disengaging, make to shake in vain alone, after becoming circulation cam (3) and change circulation rocker arm (6) disengages, become circulation Rocker arm (6) makes positioning plane (24) keep float with the first positioning platform (13) and the second positioning under the action of retaining spring (26) Platform (15) contact of floaing enables change circulation rocker arm (6) shake with the first inlet valve rocker (5) and the second inlet valve rocker (7), simultaneously Also make the first synchronous piston hole (21), the second synchronous piston hole (25) and the center line of piston hole (20) is stopped to be overlapped.

2. when automobile, which is in, hangs shelves sliding state, and clutch pedal is not operated, brake pedal is not operated, throttle Pedal is not operated, becomes the power supply electricity that circulating controling circuit (31) connect electromagnetic valve coil (30) and electronic oil pump (33) immediately Road, spool (29) overcome the elastic force of valve core reseting spring (28) under the action of electromagnetic force, the A in closing solenoid valve (27) The position of interface and B interface, while machine oil is pumped into machine oil pipe (32) and enters the sky of rocker arm shaft (8) by electronic oil pump (33) Heart oil duct (12), then enter oil duct (16) and the first synchronous piston hole (21) through oil hole (9) and push timing piston (10), Timing piston (10) pushes the first synchronous piston (11) again, and does not contact shape with change circulation cam (3) becoming circulation rocker arm (6) State, the first synchronous piston hole (21), the second synchronous piston hole (25) and stop the center line of piston hole (20) when being all overlapped, by the One synchronous piston (11) is pushed into the second synchronous piston hole (25) and the second synchronous piston (14) is pushed to be allowed to enter blocking simultaneously simultaneously Piston hole (20) pushes blocking piston (18) and compression reseting spring (17) simultaneously again, and being so far completed shakes the first inlet valve Arm (5), change circulation rocker arm (6), the second inlet valve rocker (7) are combined together the operation of shake, and the first inlet valve at this time shakes Arm (5), become circulation rocker arm (6), the second inlet valve rocker (7) both can be in the first admission cam (2), the second admission cam (4) The lower synchronous shake of driving is completed to open the movement of inlet valve in engine original induction stroke, and can be in the drive for becoming circulation cam (3) It is dynamic lower synchronous to shake and open in engine original compression stroke inlet valve, close when former compression stroke ends inlet valve, again Splash to rise in original and open the operation of inlet valve in stroke, while exhauxt valve opens, become circulation cam (3) i.e. with become circulation Rocker arm (6) disengages, and inlet valve is closed immediately.In engine original exhaust stroke, exhauxt valve opens；It constantly repeats later State circulation.Engine at this time is operated under being driven by automobile driving wheel by transmission system with minimum running resistance；It is therebetween Guarantee that the oil pressure in machine oil pipe (32) is stable, electronic oil pump (33) is made not occur overload phenomenon, the oil in machine oil pipe (32) When pressure is higher than setting engine oil pressure, pressure maintaining valve (34) is opened at once to engine sump tank draining.

3. when automobile switchs to non-extension shelves sliding state by extension shelves sliding state, it may be assumed that or clutch riding boogie board is operated or throttle After pedal is not operated or brake pedal is operated, becomes circulating controling circuit (31) and then turn off electromagnetic valve coil (30) and electricity The power circuit of motivation oil pump (33), electronic oil pump (33) are pumped into machine oil pipe (32) without machine oil immediately, spool (29) also with The position of the A interface and B interface connected state that make solenoid valve (27) is under the action of reset spring (28), at this time electromagnetism Machine oil in valve (27) and machine oil pipe (32) flows back into engine sump tank by B interface, also acts on just without oil pressure immediately When piston (10) on, do not recycle cam (3) contact condition, the first synchronous piston hole (21), second with becoming becoming circulation rocker arm (6) When the center line of synchronous piston hole (25) and blocking piston hole (20) is all overlapped, stop piston (18) in reset spring (17) The second synchronous piston (14) are released under effect and stop piston hole (20), at the same time, the second synchronous piston (14) is also by first Synchronous piston (11) releases the second synchronous piston hole (25)；Due to the limited length of reset spring (17), stop piston (18) simultaneously The second synchronous piston hole (25) will not be entered, thus the second synchronous piston (14) will not enter the first synchronous piston hole (21), Hereafter, it is not contacted with change circulation cam (3) as long as becoming circulation rocker arm (6), the first inlet valve rocker (5), the second inlet valve shake Arm (7) shakes under respective corresponding actuated by cams, the first positioning float platform (13) and second position float platform (15) under the action of, Make to become circulation rocker arm (6) in company with shaking, to make the first synchronous piston hole (21), the second synchronous piston hole (25) and stop piston The center line in hole (20) is overlapped；When becoming circulation rocker arm (6) under the driving for becoming circulation cam (3), locating platform (24) is i.e. with the Platform (13) is floatd in one positioning and the second positioning is floatd, and platform (15) disengages, make alone it is invalid shake, when becoming circulation cam (3) and become After circulation rocker arm (6) disengages, become circulation rocker arm (6) under the action of retaining spring (26), makes to position plane (24) holding It positions the platform (15) that floats with the first positioning platform (13) and second that floats and contacts, so that the first synchronous piston hole (21), second be made to synchronize work Consent (25) and the center line coincidence for stopping piston hole (20).

Claims

1. a kind of automobile engine variable cycle system, the automobile engine variable cycle system is by cylinder head, camshaft, first Inlet valve rocker, the second inlet valve rocker, change circulation rocker arm, retaining spring, timing piston, the first synchronous piston, second synchronize Piston, rocker arm shaft, machine oil pipe, solenoid valve, electronic oil pump, pressure maintaining valve, becomes circulating controling circuit composition at reset spring；It is special Sign is: camshaft is equipped with the first admission cam, the second admission cam, becomes circulation cam；Becoming circulation cam can send out in automobile Motivation original compression stroke and former expansion stroke driving inlet valve rocker open inlet valve；It is fixed that first inlet valve rocker is equipped with first Position is floatd platform and the first synchronous piston hole, and the second inlet valve rocker, which is equipped with the second positioning and floats, platform and stops piston hole, is become circulation and is shaken Arm is equipped with locating platform and the second synchronous piston hole, is equipped with retaining spring between change circulation rocker arm and cylinder head, positions One end of spring heads on change circulation rocker arm, the other end heads on cylinder head；Rocker arm is recycled as long as recycling cam contact with change as long as becoming Locating platform can be made to keep floaing with the first positioning and platform and second position the platform that floats and contact, to keep under the action of retaining spring First synchronous piston hole is overlapped with the center line in the second synchronous piston hole and blocking piston hole；First synchronous piston hole have oil duct with Oil hole on rocker arm shaft hollow oil duct communicates, and is equipped with timing piston and the first synchronous piston in the first synchronous piston hole；Resistance It is equipped in gear piston hole and stops piston and reset spring；The second synchronous piston is installed in second synchronous piston hole；First into Valve rocker, the second inlet valve rocker, change circulation rocker arm are all mounted on rocker arm shaft, and installation, which is matched, is combined into clearance fit；Rocker arm shaft Equipped with hollow oil duct；Machine oil pipe is connected to the oil outlet of hollow oil duct, the A interface of solenoid valve, electronic oil pump simultaneously；On machine oil pipe It is mounted with a pressure maintaining valve, being turned on or off for power circuit of solenoid valve and electronic oil pump is by change circulating controling circuit control System.