CN208918707U

CN208918707U - Automobile engine variable cycle control system

Info

Publication number: CN208918707U
Application number: CN201620386830.7U
Authority: CN
Inventors: 莫乾坤; 莫嘉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-22
Filing date: 2016-04-22
Publication date: 2019-05-31
Anticipated expiration: 2026-04-22

Abstract

The utility model is a kind of automobile engine variable cycle control system；The system can make four-stroke engine automatically become the passive transport with two-stroke cycle, make exhaust-driven turbo-charger exhaust-gas turbo charger fuel feeding from uninterrupted while keeping engine rotation when automobile belt keeps off and sliding；And with gear Accelerating running be transferred to slide shape when, do not have to carry out neutral gear, quenching operations, so that automobile is had coasting distance and oil-saving effect close to engine misses neutral position sliding in the state of keeping due braking ability；When being transferred to acceleration mode by sliding with gear, neutral gear can not had to or stepping on clutch pedal carries out start-up operation.

Description

Automobile engine variable cycle control system

One, technical field

The utility model relates to a kind of automobile engine variable cycle control system, which is to enter band gear in automobile to slide After row state, changes the circulation pattern of each cylinder operation of automobile engine immediately, automobile engine is made to be in passive rotation status When generated resistance and vibration minimize.

Two, background techniques

Currently, especially truck, sliding state account for automobile total run time or traveling when well known automobilism 30% or more of mileage, the mode slided have: idling neutral position sliding, and forced idling band gear slides, and close engine neutral position sliding, It closes engine band gear to slide, closes engine band 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 off-gear operation, terminates to need to carry out band gear operation, electricity generation efficiency, efficiency of air conditioner Maintain idling area.

Forced idling band gear slides, and no requirement (NR) in operation, braking reliability is constant, but coasting distance is short, and fuel-economizing is unobvious.

Engine neutral position sliding is closed, is that gear lever is put into neutral gear position, by engine misses, when not needing to slide Engine is restarted, gear lever is hung into people's gear appropriate.This mode slided can save idle oil consumption when sliding, section Oily effect is good.The disadvantage is that need to restart engine with gear, and it is troublesome in poeration, vehicle braking reliability is reduced, is not generated electricity, is not had There is air-conditioning.

It closes engine band 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 engine band 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 existing present automobile all to have the defects that different in different sliding modes, the utility model is mentioned For a kind of automobile engine variable cycle control system, after which can make automobile enter band gear sliding state, change vapour immediately The circulation pattern of each cylinder of car engine, by original: air-breathing, compress, splash rise, the four-stroke cycle Mode change that is vented at: Air-breathing, exhaust, air-breathing, the two-stroke cycle mode of exhaust.

Automobile engine variable cycle control system the technical solution adopted is that: by cylinder head, camshaft, the first inlet valve Rocker arm, the second inlet valve rocker become circulation rocker arm, retaining spring, the first roller bearing, the second roller bearing, third Roller Shaft Hold, timing piston, the first synchronous piston, the second synchronous piston, stop piston, reset spring, rocker arm shaft, machine oil pipe, pressure maintaining valve, Solenoid valve, electronic oil pump become circulating controling circuit composition.The utility model is suitable for having double inlet valves, overhead double cam On the engine of axis, camshaft is equipped with the first admission cam, the second admission cam, becomes circulation cam；When the first synchronous piston Into the second synchronous piston hole and after pushing the second synchronous piston to enter blocking piston hole, start in engine original compression stroke When, become circulation cam and also start to drive third roller bearing, makes the first inlet valve rocker, the second inlet valve rocker, becomes to recycle and shake Synchronous shake of arm opens corresponding inlet valve；In expansion stroke, becomes circulation cam and continue to drive third roller bearing, make first Inlet valve rocker, the second inlet valve rocker become the corresponding inlet valve of circulation synchronous rocker shake opening；And it is close in expansion stroke End of a period time-varying circulation cam is disengaged with third roller bearing；First roller bearing is installed on the first inlet valve rocker and is set There is the first positioning to float platform, oil duct, the first synchronous piston hole, the first synchronous piston hole is connected to the oil hole on oil duct and rocker arm shaft, Timing piston and the first synchronous piston are installed in first synchronous piston hole；Second Roller Shaft is installed on the second inlet valve rocker It holds and is equipped with second and position the platform that floats, stop piston hole, stop that blocking piston and reset spring are installed in piston hole；Become circulation to shake Third roller bearing is installed on arm and is equipped with positioning plane, the second synchronous piston hole, installs second in the second synchronous piston hole Synchronous piston；Become between circulation rocker arm and cylinder head and retaining spring is installed, one end of retaining spring heads on change circulation rocker arm, another One end heads on cylinder head；First inlet valve rocker, the second inlet valve rocker, change circulation rocker arm are all mounted on rocker arm shaft, are installed With clearance fit is combined into, the oil duct junction in the first inlet valve rocker is opposite with the oil hole on rocker arm shaft；Machine oil pipe and rocker arm shaft On hollow oil duct, the A interface of solenoid valve, electronic oil pump oil outlet connection, be mounted with a pressure maintaining valve on machine oil pipe；Become Circulating controling circuit controls being turned on or off for the power circuit of solenoid valve and electronic oil pump.

When engine is in power output, the first admission cam and the second admission cam in camshaft pass through driving the One roller bearing and the second roller bearing realize that the first inlet valve rocker of driving and the second inlet valve rocker shake, make it is corresponding into Valve is opened in suction stroke；Change circulation cam in camshaft makes to become circulation rocker arm by driving third roller bearing realization Make idle freely to shake.

When automobile belt keeps off sliding state, as long as accelerator pedal, clutch pedal, brake pedal, change do not follow driver Loop control circuit can enable solenoid valve close drain tap, lubricating oil pump in due course and machine oil is in time pumped into machine oil pipe to push timing piston To push the first synchronous piston and the second synchronous piston, makes the first inlet valve rocker, the second inlet valve rocker, becomes circulation rocker arm After being connected, the first inlet valve rocker, the second inlet valve rocker become circulation rocker arm both with the first admission cam in camshaft And second admission cam driving shake together, open inlet valve in former suction stroke, cylinder air-breathing, and in camshaft Become circulation actuated by cams to shake together, keeps it turning on inlet valve also in former compression stroke, former expansion stroke, engine is enabled to exist The not air in compression cylinder when compression stroke, reduces the inertia kinetic energy of consumption automobile, and the air-breathing when original splashes and rises by stroke, reduces The negative pressure resistance that top land generates.While exhauxt valve opens, become circulation cam i.e. disengaged with third roller bearing, Inlet valve is closed immediately, in former exhaust stroke, exhauxt valve opens exhaust.So far each cylinder of engine all in air inlet, row The two-stroke cycle state of gas.

When automobile be in non-band gear sliding state when, become circulation rocker arm immediately with the first inlet valve rocker, the second inlet valve Rocker arm releases interaction relation, and engine restores four-stroke cycle mode again

The utility model has the advantages that: vehicle can not change the reliability of the original braking of vehicle, not change when band gear slides The normal driver behavior habit of the former vehicle of change, the efficiency of air conditioner for not changing corresponding speed, the electricity generation efficiency for not changing corresponding speed In the state of, the resistance and vibration for generating engine minimize, and are effectively prevented from automobile slide speed and decline too fast lack Point, fuel-saving efficiency are high.

Four, Detailed description of the inventions

The invention will be further described with implementation with reference to the accompanying drawing.

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

Fig. 2 is each cam of the utility model and the corresponding relationship of each rocker arm and rocker arm and rocker arm shaft partial cutaway schematic

Fig. 3 is the relative positional relationship signal of first inlet valve rocker and valve and the first admission cam of the utility model Figure

Fig. 4 is the change circulation rocker arm of the utility model and the relative positional relationship schematic diagram for becoming circulation cam

Fig. 5 is second intake rocker of the utility model and the corresponding position relation schematic diagram of valve and the second admission cam

Fig. 6 is the movable control system schematic diagram of synchronous piston of the utility model

In figure: 1. camshafts, 2. first admission cams, 3. become circulation cam, 4. second admission cams, 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. electromagnetic valve coils, 31. become circulating controling circuit, 32. machine oil pipes, 33. first roller bearings, 34. third roller bearings, 35. second roller bearings, 36 electronic oil pumps, 37. pressure maintaining valves.

Five, specific embodiments

Automobile engine variable cycle control system is by cylinder head (23), camshaft (1), the first intake rocker, second Intake rocker (7) becomes circulation rocker arm (6) rocker arm shaft (8), timing piston (10), the first synchronous piston (11), the second synchronous piston It hinders (14), stop piston (18), reset spring (17), the first roller bearing (33), the second roller bearing (35), third Roller Shaft It holds (34), machine oil pipe (32), solenoid valve (27), electronic oil pump (36), pressure maintaining valve (37) and becomes circulating controling circuit (31) group At.

In Fig. 1, there are the first admission cam (2), the second admission cam (4) on camshaft (1) and becomes circulation cam (3), N display in direction of rotation becomes the corresponding position of circulation cam (3) and the first admission cam (2) and the second admission cam (4).

In Fig. 2, the effect of the first admission cam (2) and the second admission cam (4) is: passing through driving in induction stroke First roller bearing (33) and the second roller bearing (35) open the first inlet valve rocker (5) and the second inlet valve rocker (7) Inlet valve.The effect for becoming circulation cam (3) is: being shaken by driving third roller bearing (34) to make to become circulation rocker arm (6) It is dynamic.First inlet valve rocker (5), the second inlet valve rocker (7), change circulation rocker arm (6) are all mounted on rocker arm shaft (8), are installed With being combined into clearance fit.Set on the hollow oil duct (12) of rocker arm shaft (8) oil hole (9) and in the first inlet valve rocker (5) Oil duct (16) and the first synchronous piston hole (21) communicate.Be equipped on first inlet valve rocker (5) the first roller bearing (33) and Float platform (13) and the first synchronous piston hole (21) are positioned equipped with first, timing piston is housed in the first synchronous piston hole (21) (10) and the first synchronous piston (11), when the first synchronous piston (11) does not enter into the second synchronous piston hole (25), and become and follow For third roller bearing (34) on ring rocker arm (6) in the state of becoming circulation cam (3) without contact, first positions the platform that floats It (13) is all to be contacted with the positioning plane (24) become in circulation rocker arm (6), to make the first synchronous piston hole (21) and become to recycle The center line in the second synchronous piston hole (25) in rocker arm (6) is overlapped.Second inlet valve rocker is equipped with the second Roller Shaft on (7) It holds (35) and is equipped with second and positions and float platform (15) and stop piston hole (20), piston hole (20) is stopped to be provided with blocking piston (18) and reset spring (17), the second synchronous piston (14) do not enter into stop piston hole (20) when, and become circulation rocker arm (6) third roller bearing (34) on is in become without contact and follow in the state of cam (3), the second positioning float platform (15) be all with Become positioning plane (24) contact in circulation rocker arm (6), to make the second synchronous piston hole (25) and the second inlet valve rocker (7) center line of the blocking piston hole (20) in is overlapped.Become and third roller bearing (34) is installed in circulation rocker arm (6) and is equipped with Plane (24) and the second synchronous piston hole (25) are positioned, is mounted with the second synchronous piston (14) in the second synchronous piston hole (25), As long as the third roller bearing (34) become in circulation rocker arm (6) is not contacted with change circulation cam (3), positioning plane (24) is all It positions the platform (15) that floats with the first positioning platform (13) and second that floats and contacts, make the first synchronous piston hole (21) and the second synchronous piston hole (25) and the center line of piston hole (20) is stopped to be overlapped.

In Fig. 3, the first admission cam (2) is in induction stroke by driving the first roller bearing (33) to make the first inlet valve Rocker arm (5) opens inlet valve, and oil duct (16) are equipped in the first inlet valve rocker (5), first are floatd platform (13), the first synchronous piston Hole (21), and the first roller bearing (33) are installed.

In Fig. 4, the retaining spring (26) being mounted on cylinder head (23) is popped up circulation rocker arm (8) is become, and becomes circulation Rocker arm (6) is mounted on rocker arm shaft (8), is become circulation rocker arm (6) and is equipped with positioning plane (24), the second synchronous piston hole (25), And third roller bearing (34) are installed, become circulation cam (3) and drives third roller in former compression stroke and former expansion stroke Bearing (34) makes to become circulation rocker arm (6) shake.

In Fig. 5, the second admission cam (4) is in induction stroke by driving the second roller bearing (35) to make the second inlet valve Rocker arm (7) opens inlet valve, the second inlet valve rocker (7) be equipped with second float platform (15) stop piston hole (20), and be equipped with Second roller bearing (35).

In Fig. 6, machine oil pipe (32) is connected to hollow oil duct (12), the A interface of solenoid valve (27), electronic oil pump (36) simultaneously Oil outlet, a pressure maintaining valve is installed on machine oil pipe (32)；When electromagnetic valve coil (30) is powered, spool (29) is in closing electromagnetism The A interface of valve and the position of B interface, when electromagnetic valve coil (30) powers off, effect of the spool (29) in valve core reseting spring (28) Lower to be in the position for making solenoid valve A orifice B interface, becoming circulating controling circuit (31) is according to motoring condition and driving The intention of member is appropriately energized or disconnects the power circuit of electromagnetic valve coil (30) and electronic oil pump (36).

The course of work of the utility model:

1. in running car and when not entering into band gear sliding state, it is possible to be that speed changer is in neutral gear or clutch When device pedal is operated or brake pedal is operated or gas pedal is operated, becomes circulating controling circuit (31) and disconnect solenoid valve The power circuit of coil (30) and electronic oil pump (36), spool (29) is under the action of valve core reseting spring (28) makes electricity The position of magnet valve (27) A orifice B interface causes the machine oil in solenoid valve (27) and in machine oil pipe (32) to return by B interface It is flow to engine sump tank, so that acting on timing piston (10) without oil pressure, stopping piston (18) in reset spring (17) Under the action of by the second synchronous piston (14) intercept stop except piston hole (20), the second synchronous piston (14) at the same time First synchronous piston (11) are intercepted except the second synchronous piston hole (25), due to stopping the length of piston reset spring (17) It is limited, stop piston (18) that the second synchronous piston hole (25) can't be entered, therefore the second synchronous piston (14) will not enter First synchronous piston hole (21)；At this point, the first inlet valve rocker (5) and the second inlet valve rocker (7) are in the first admission cam (2) and under the driving of the second admission cam (4) it shakes, floats platform (13) in the first positioning and the second positioning is floatd the effects of platform (15) Under, also make to become circulation rocker arm (6) in company with shaking, makes the first synchronous piston hole (21), the second synchronous piston hole (25) and stop to live The center line of consent (20) is overlapped；Under driving of the third valve roller bearing (35) in change circulation cam (3), plane is positioned (24) float platform (13) with the first positioning and the second positioning float platform (15) disengage, make alone it is invalid shake, recycle cam when becoming (3) after disengaging with third valve roller bearing (35), become circulation rocker arm (6) under the action of retaining spring (26), it is fixed to make Bit plane (24) keeps floaing platform (13) with the first positioning and the second positioning is floatd, and platform (15) contacts simultaneously adjoint first inlet valve rocker (5), the second inlet valve rocker (7) shakes, to make the first synchronous piston hole (21), the second synchronous piston hole (25) and stop to live The center line of consent (20) is overlapped.

2. that is, speed changer is not operated in non-neutral gear position, clutch pedal, makes when automobile is in band gear sliding state When dynamic pedal is not operated, gas pedal is not operated, become circulating controling circuit (31) immediately connect electromagnetic valve coil (30) and The power circuit of electronic oil pump (36), spool (29) overcome the elastic force of valve core reseting spring (28) under the action of electromagnetic force, Machine oil is pumped into machine oil pipe (32) and entered hollow by the position in closing solenoid valve A interface and B interface, electronic oil pump (36) 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, in the first synchronous piston hole (21), the second synchronous piston hole (25) and stops When the center line of piston hole (20) is overlapped, the first synchronous piston (11) are pushed into the second synchronous piston hole (25), push the simultaneously Two synchronous pistons (14), which are allowed to enter simultaneously, to be stopped piston hole (20) and while pushing blocking piston (18) and compression reseting spring (17), being so far completed is combined together the first inlet valve rocker (5), change circulation rocker arm (6), the second inlet valve rocker (7) The operation of shake, the first inlet valve rocker (5) at this time, become circulation rocker arm (6), the second inlet valve rocker (7) both first into Gas cam (2), the second admission cam (4) driving under synchronous shake complete to open inlet valve in former induction stroke, and can become Recycle it is synchronous under the driving of cam (3) shake, complete former compression stroke, it is former splash rise stroke unlatching inlet valve operation；? While exhauxt valve opens, becoming circulation cam (3) and disengaged with third roller bearing (35), inlet valve is closed immediately, When former exhaust stroke, gas in the jar is discharged in exhauxt valve opens；Later, former induction stroke, cylinder pass through inlet valve air inlet；Original compression Stroke cylinder is vented by inlet valve；Former expansion-stroke cylinder successively passes through inlet valve exhaust valve air inlet；Former exhaust stroke, cylinder It is vented by exhaust valve；Engine constantly repeats above-mentioned two-stroke cycle.Automobile engine at this time is passed through by automobile driving wheel Transmission system is operated under driving with minimum running resistance and vibration；For guarantee electronic oil pump (33) do not occur overload phenomenon, And guarantee that the oil pressure in machine oil pipe (32) is stablized, and when the oil pressure in machine oil pipe (32) is higher than setting engine oil pressure, pressure maintaining valve (34) it opens at once to engine sump tank draining.

3. when driver, which has cancelled band gear, slides instruction, it may be assumed that or speed changer be in neutral gear or clutch riding boogie board be operated, Or gas pedal is operated or brake pedal is operated, become circulating controling circuit (31) then turn off electromagnetic valve coil (30) and The power circuit of electronic oil pump (36), spool (29) is under the action of reset spring (28) immediately makes solenoid valve (27) A The position of orifice B interface causes the machine oil in solenoid valve (27) and machine oil pipe (32) to be back to by B interface and starts Oil pan, so that acted on timing piston (10) without oil pressure, it is then convex not with change circulation in third roller bearing (34) When taking turns (3) contact, stops piston (18) to release the second synchronous piston (14) under the action of reset spring (17) and stop piston First synchronous piston (11) are also released the second synchronous piston hole (25) by hole (20), at the same time, the second synchronous piston (14)； Due to the limited length of reset spring (17), stop piston (18) that the second synchronous piston hole (25), therefore second can't be entered Synchronous piston (14) will not enter the first synchronous piston hole (21), hereafter, as long as third roller bearing (34) is not followed with change Ring convex wheel (3) contact, the first inlet valve rocker (5), the second inlet valve rocker (7) shake under respective corresponding actuated by cams, Platform (13) is floatd in first positioning and the second positioning is floatd under the action of platform (15), also makes to become circulation rocker arm (6) in company with shake, to make the The center line of one synchronous piston hole (21), the second synchronous piston hole (25) and blocking piston hole (20) is overlapped；When third Roller Shaft (34) are held under the driving for becoming circulation cam (3), locating platform (24), which floats with the first positioning, platform (13) and second to be positioned and float platform (15) it disengages, make invalid shake alone.

Claims

1. a kind of automobile engine variable cycle control system, by cylinder head, camshaft, the first inlet valve rocker, the second air inlet Door rocker arm becomes circulation rocker arm, retaining spring, the first roller bearing, the second roller bearing, third roller bearing, timing piston, the One synchronous piston, the second synchronous piston stop piston, are reset spring, rocker arm shaft, machine oil pipe, solenoid valve, electronic oil pump, steady Pressure valve becomes circulating controling circuit composition；It is characterized by: camshaft is equipped with the first admission cam, the second admission cam, becomes and follow Ring convex wheel；After the first synchronous piston enters the second synchronous piston hole and the second synchronous piston is pushed to enter blocking piston hole, When engine original compression stroke starts, becomes circulation cam and also start to drive third roller bearing, make the first inlet valve rocker, second Inlet valve rocker becomes the corresponding inlet valve of circulation synchronous rocker shake opening；In expansion stroke, becomes circulation cam and continue to drive Third roller bearing makes the first inlet valve rocker, the second inlet valve rocker, becomes the corresponding air inlet of circulation synchronous rocker shake opening Door；And it is disengaged close to end of a period time-varying circulation cam with third roller bearing in expansion stroke；Pacify on first inlet valve rocker Float platform, oil duct, the first synchronous piston hole are positioned equipped with the first roller bearing and equipped with first, the first synchronous piston hole is connected to oil duct With the oil hole on rocker arm shaft, timing piston and the first synchronous piston are installed in the first synchronous piston hole；Second inlet valve shakes Second roller bearing is installed on arm and is equipped with second and positions the platform that floats, stop piston hole, blocking is installed in blocking piston hole and is lived Plug and reset spring；Become on circulation rocker arm that third roller bearing is installed and is equipped with and positions plane, the second synchronous piston hole, second Second synchronous piston is installed in synchronous piston hole；Become between circulation rocker arm and cylinder head and retaining spring is installed, retaining spring One end heads on change circulation rocker arm, the other end heads on cylinder head；First inlet valve rocker, the second inlet valve rocker become circulation rocker arm It is all mounted on rocker arm shaft, installation, which is matched, is combined into clearance fit, the machine oil on oil duct junction and rocker arm shaft in the first inlet valve rocker Hole is opposite；Machine oil pipe is connected to the A interface of hollow oil duct, solenoid valve, the oil outlet of electronic oil pump on rocker arm shaft, machine oil pipe On be mounted with a pressure maintaining valve；Become circulating controling circuit and control the power circuit of solenoid valve and electronic oil pump and leads on-off It opens.