CN207245869U

CN207245869U - Automobile engine, which becomes, circulates slow system

Info

Publication number: CN207245869U
Application number: CN201620226072.2U
Authority: CN
Inventors: 徐健; 莫嘉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2018-04-17
Anticipated expiration: 2026-03-18

Abstract

This practicality is newly that a kind of automobile engine becomes the slow system of circulation；The system is when automobile is in and hangs shelves operation and clutch in the state being completely combined, can be according to the depth of driver's brake pedal, engine can in time change the driving cam of the affiliated exhaust valve rocker of respective cylinder, the corresponding cylinder of engine is made to change into the two-stroke cycle pattern of air inlet, compression, air inlet, compression by the four-stroke cycle pattern of original air inlet, compression, expansion, exhaust so that cylinder becomes efficient air compressor, consumes the inertia motion energy of automobile by compressed air.

Description

Automobile engine, which becomes, circulates slow system

One, technical fields

It the utility model is related to a kind of automobile engine and become the slow system of circulation, it becomes than known automobile engine circulates Slowly the structure of system is simpler, more compact, weight is lighter, function is more perfect, and work is softer.

Two, background technologies

At present, known automobile engine, which becomes, circulates the effect of slow system and is：When automobile inertial operation needs slow, Driving wheel drives engine to operate by transmission system, and engine at this time can change endless form, from original air inlet, pressure Contracting, expansion, the four-stroke cycle pattern of exhaust change into air inlet, compression, air inlet, the two-stroke cycle pattern of compression, engine The inertia motion energy of automobile is consumed by compressed air, so as to fulfill reducing the speed of service or reducing operation acceleration.It is existing Automobile engine become that to circulate slow system be to change exhaust valve valve timing by hydraulic control and transmission, it is former in piston When compression stroke piston runs near top dead center, open-top exhaust valve, the indoor compressed air that will burn is released outside cylinder, in work In the former expansion stroke of plug, exhaust valve continues to be opened by item, so that in former expansion stroke, cylinder can be by the exhaust door-inhale opened by item Draw air；In piston original exhaust stroke, exhaust valve is closed, piston is moved into top dead centre to press air in cylinder Contracting；Larger engine retardation brake force can be so produced, strengthens the slow efficiency of engine.Shortcoming is complicated, volume Huge, weight is larger and each cylinder of automobile engine is all non-adjustable in circulatory condition, the size of slow effect is become at the same time Control.

The three, content of the invention

In order to overcome existing automobile engine to become to circulate existing for slow system it is complicated, bulky, weight is larger, The shortcomings of slow effect size can not regulate and control, the utility model provide a kind of automobile engine and become the slow system of circulation, the system Required engine retardation efficiency can be in due course provided when driver needs engine retardation, and conveniently adjustment can participate in becoming The quantity of circulation cylinder becomes the impact circulated when slowly intervening to reach reduction engine.

The technical solution adopted in the utility model is：Automobile engine become circulate slow system be by：Become loop control electricity Road and the change cycling mechanism on each cylinder and composition；And become cycling mechanism be have by：Electromagnetic controller, stent, spline slide The compositions such as cam sleeve, retaining spring, positioning ball, the first blocker ring, the second blocker ring, splined shaft；Electromagnetic controller be by： Magnetic coil, resetting spring, air inlet iron core, exhaust iron core, fulcrum, lever composition and it is rack-mount；Spline slide cam Sleeve outer surface is equipped with first exhaust cam, second exhaust cam, admission cam, the spiral annular groove of air inlet control, gas exhaust inspecting spiral shell Annular groove is revolved, the hole wall of spline slide cam sleeve is equipped with spline, exhaust positioning pit, air inlet positioning pit, spline slide camshaft Set is installed on splined shaft, and can be slided between the first blocker ring, the second blocker ring；It is by differing that air inlet, which controls spiral annular groove, Deep ring groove part, etc. deep helical ring groove part, etc. deep ring groove part composition, the spiral annular groove of gas exhaust inspecting be by not waiting deep annular groove portion Point, etc. deep helical ring groove part, etc. deep ring groove part composition；Splined shaft is also equipped with retaining spring, the first resistance equipped with spline Baffle ring, the second blocker ring；Ball is positioned to be installed between splined shaft and spline slide cam sleeve.

When cylinder is in four-stroke cycle, two exhaust cams on spline slide cam sleeve are by driving two rollings Sub- bearing makes two exhaust valve rockers shake so as to open corresponding exhaust valve, by outside the exhaust gas discharge cylinder after burning；Meanwhile Admission cam on spline slide cam sleeve makees invalid servo rotary.

Driver need engine become air compressor it is counter drag automobile carry out it is slow when, stepped on as long as not stepping on the gas at the same time Plate and clutch pedal, becoming circulating controling circuit according to the depth of brake pedal, can connect the electromagnetism control of respective cylinder The power circuit of device processed, is vented iron core and leaves the spiral annular groove of gas exhaust inspecting, air inlet iron core enters air inlet and controls spiral annular groove immediately Spline slide cam sleeve is interfered, spline slide cam sleeve is moved along spline cam shaft, and spline slide is convex Admission cam in axle sleeve stops doing after being positioned at the position for the first roller bearing that can be driven on first row valve rocker Relate to；Because after the movement of spline slide cam sleeve, the exhaust cam on spline slide cam sleeve can not drive exhaust to shake The position of arm, so invalid servo rotary can only be made；Then when the compression stroke of piston nearly ends, spline slide is convex The first roller bearing on admission cam driving first row valve rocker in axle sleeve, first row valve rocker promote pair immediately The exhaust valve answered is allowed to open, and exhaust valve moment after unlatching just discharges the compressed air in cylinder, and piston is in top dead centre mistake Afterwards, air is sucked from the exhaust valve of unlatching again into former tympanites stroke, cylinder, the former instroke after piston lower dead center is opened Admission cam stops driving first row valve rocker, exhaust valve closing soon after beginning；Then in former exhaust stroke, piston is immediately Air in cylinder is compressed, when piston is run to close to former exhaust top dead center, IO Intake Valve Opens, release compressed air；Then Piston operation top dead centre just enters former induction stroke later, and cylinder sucks air from inlet valve；The piston after former induction stroke Into former compression stroke, the air in piston stroking upward compression cylinder；Subsequent piston when former compression stroke nearly ends, slide by spline Admission cam on moving cam axle sleeve drives the first roller bearing, makes first row valve rocker promote corresponding exhaust valve to make immediately Unlatching.So far the cylinder enters two-stroke cycle operation mode.

When the slow efficiency of automobile engine being not required in automobilism, as long as driver or not stepping on brake pedal or stepping on Lower clutch gas pedal, or pedal of stepping on the throttle, become the power supply electricity that circulating controling circuit disconnects the electromagnetic controller of each cylinder immediately Road, under the action of resetting spring and fulcrum and lever, air inlet iron core leaves air inlet and controls spiral annular groove, and exhaust iron core enters row The spiral annular groove of gas control system interferes spline slide cam sleeve, moves spline slide cam sleeve, and two are vented Cam orientation stops interference after it can drive the position of corresponding exhaust valve rocker, and subsequent exhaust cam is by time driving Roller bearing shakes exhaust valve rocker, so as to open exhaust valve in exhaust stroke；Admission cam in sliding cam axle sleeve Make invalid servo rotary, so far each cylinder enters four-stroke cycle operation mode.

The utility model has the advantages that it is simple in structure, small, light-weight, slow it is efficient, work is softer, slow Efficiency size may be selected.

Four, are illustrated

The invention will be further described below in conjunction with the accompanying drawings：

Fig. 1 is the spline slide cam sleeve of the utility model and the relative position relation schematic diagram of electromagnetic controller

Fig. 2 be the spline slide cam sleeve of the utility model along Y1, Y2 directions perpendicular to the cross section of axis direction with And electromagnetic controller controls spiral annular groove and direction of rotation schematic diagram with air inlet

Fig. 3 be the spline slide cam sleeve of the utility model along Y7, Y8 directions perpendicular to the cross section of axis direction with And electromagnetic controller and the spiral annular groove of gas exhaust inspecting and direction of rotation schematic diagram

Fig. 4 be the spline slide cam sleeve of the utility model along Y3, Y4 directions perpendicular to the cross section of axis direction with And exhaust cam and direction of rotation schematic diagram

Fig. 5 be the spline slide cam sleeve of the utility model along Y5, Y6 directions perpendicular to the cross section of axis direction with And admission cam and direction of rotation schematic diagram

Fig. 6 is that the utility model spends strong sliding cam axle sleeve, camshaft diagrammatic cross-section in the axial direction, and is slided The relative position relation schematic diagram of cam sleeve and exhaust rocker arm.

Fig. 7 is the splined shaft of the utility model along Y9, schematic diagram of the Y10 directions perpendicular to the cross section of axis direction

In figure：1. become circulating controling circuit, 2. electromagnetic controllers, 3. fulcrums, 4. levers, 5. stents, 6. magnetic coils, 7. Resetting spring, 8. air inlet iron cores, 9. exhaust iron cores, 10. spline slide cam sleeves, 11. air inlets control spiral annular groove, 12 air inlets Cam, 13. first exhaust cams, 14. second exhaust cams, the spiral annular groove of 15. gas exhaust inspectings, 16. retaining springs, 17. slide Cam sleeve hole wall, 18. first blocker rings, 19. second blocker rings, 20. splined shafts, 21. rocker arm shafts, 22. first row valves shake Arm, 23. second row valve rockers, 24. first roller bearings, 25. second roller bearings, 28. positioning balls, 29. exhaust positioning pits, 30. air inlet positioning pit, 31 splines, 32. splines.

Five, embodiments

Automobile engine become circulate slow system be by：Become circulating controling circuit (1), fulcrum (3), lever (4), stent (5), magnetic coil (6), resetting spring (7), air inlet iron core (8), exhaust iron core (9), spline slide cam sleeve (10), positioning Spring (16), the first blocker ring (18), the second blocker ring (19), splined shaft (20) composition.By fulcrum (3), lever (4), stent (5), magnetic coil (6), resetting spring (7), air inlet iron core (8), exhaust iron core (9) composition electromagnetic controller (2)；By positioning bullet Spring (16), positioning ball (28), exhaust positioning pit (29), air inlet positioning pit (30) composition positioning lock, to ensure spline slide cam Axle sleeve (10) can be only in first exhaust cam (13) and second exhaust cam (14) drives corresponding first roller bearing (24) With the position of the second roller bearing (25), or can be only in admission cam drive the first roller bearing (24) position.

As shown in Figure 1, it is convex to be equipped with first exhaust cam (13), second exhaust for spline slide cam sleeve (10) (14), admission cam (12), air inlet control spiral annular groove (11), the spiral annular groove of gas exhaust inspecting (15).Electromagnetic controller (2) stent (5) on.Become circulating controling circuit (1) by control energization or the power-off of electromagnetic controller (2) control exhaust iron core (9) or into Whether gas iron core (8) enters the spiral annular groove of gas exhaust inspecting (15) or air inlet controls spiral annular groove (11).

As shown in Figure 2, spline slide cam sleeve hole wall (17) is equipped with spline (31), on splined shaft (20) The spline (32) of Shi Keyu spline cam shafts (20) is meshed.Electromagnetic Control (2) is installed on stent (5).When air inlet Magnetic suction thread When enclosing (6) and being powered, air inlet iron core (8) overcomes the elastic force of return spring (7) to flower sliding cam immediately under the action of electromagnetic force Direction where axle sleeve (10) axis is stretched out, and spline slide cam sleeve (10) OA radial line along n direction indications rotate to During with air inlet iron core (8) axis lap position, air inlet electromagnetic controller iron core (8) initially enters air inlet and controls spiral annular groove (11) Do not wait deep ring groove part；When the OB radial line of spline slide cam sleeve (10) is gone to and air inlet electromagnetism control along n direction indications During device iron core (8) axis lap position processed, air inlet electromagnetic controller iron core (8) slid into the spiral annular groove of gas control system (11) etc. The starting position of deep helical annular groove, meanwhile, piston is in intake stroke, the first exhaust on spline slide cam sleeve (10) Cam (13) and second exhaust cam (14) have also just been disengaged with the first roller bearing (24) and the second roller bearing (25).With The OC radial line of strong sliding cam axle sleeve (10) of blossoming continues to rotate along n direction indications, and to air inlet electromagnetic controller iron core (8) , in the case where air inlet iron core (8) and air inlet control the collective effect of spiral annular groove (11), slided during axis lap position Cam sleeve (10) is moved to X-direction, when the OC radial line for spending strong sliding cam axle sleeve (10) is gone to and air inlet along n direction indications During iron core (8) axis lap position, piston starts to slip into air inlet in former compression stroke nearly ultimate position, air inlet iron core (8) The starting position for waiting deep annular groove of spiral annular groove (11), meanwhile, admission cam (12) is in will drive the first roller bearing (24) position, and first exhaust cam (13) and second exhaust cam (14) are all in cannot drive the first Roller Shaft Hold (24) and the position of the second roller bearing (25).When spline slide cam sleeve (10) continues to rotate along n direction indications, air inlet Iron core (8) just controls the deep ring groove part slip that waits of spiral annular groove (11) in air inlet, while admission cam (12) is in driving The state of first roller bearing (24).

As shown in Figure 3, spline slide cam sleeve hole wall (17) is equipped with and spends strong groove (31), on splined shaft (20) The spline (32) of Shi Keyu spline cam shafts (20) is meshed.Electromagnetic Control (2) is installed on stent (5).When magnetic coil (6) During power-off, exhaust iron core (9) is under the action of the elastic force and fulcrum (3) and lever (4) of return spring (7) to spline slide cam Direction where axle sleeve (10) axis is stretched out, and spline slide cam sleeve (10) OA radial line along n direction indications rotate to During with exhaust iron core (9) axis lap position, it is deep that exhaust iron core (9) initially enters not waiting for the spiral annular groove of gas exhaust inspecting (15) Ring groove part；When spline slide cam sleeve (10) OB radial line along n direction indications go to exhaust iron core (9) axis it is overlapping During position, exhaust electromagnetic controller iron core (9) has slipped into the start bit for waiting deep helical annular groove of the spiral annular groove of gas exhaust inspecting (15) Put, meanwhile, piston is in intake stroke, and admission cam (12) is disengaged with the first roller bearing (24)；With The OC radial line of spline slide cam sleeve (10) continues to rotate along n direction indications, and to exhaust iron core (9) axis lap position Close, under the action of exhaust iron core (9) and the spiral annular groove of gas exhaust inspecting (15), spline slide cam sleeve (10) is to X1 directions It is mobile, when spline slide cam sleeve (10) OC radial line is gone to being vented iron core (9) axis lap position along n direction indications When, exhaust iron core (9) starts to slip into the starting position for waiting deep annular groove of the spiral annular groove (15) of exhaust, meanwhile, first exhaust cam (13) in can drive the positions of the first roller bearing (24), second exhaust cam (14) in the second Roller Shaft can be driven Hold the position of (25)；And admission cam (12) is in the position that cannot drive the first roller bearing (24)；When spline is slided Moving cam axle sleeve (10) continues to rotate along n direction indications, and exhaust iron core (9) just waits deep ring in the spiral annular groove (15) of air inlet control Slot part slides, and first exhaust cam (13) and second exhaust cam (14) are in the first roller bearing of driving (24) and second The state of roller bearing (25).

As shown in Figure 4, spline slide cam sleeve hole wall (17) is equipped with and spends strong groove (31), on splined shaft (20) The spline (32) of Shi Keyu splined shafts (20) is meshed, and spline slide cam sleeve (10) is equipped with first exhaust cam (13).

As shown in Figure 5, spline slide cam sleeve hole wall (17) is equipped with and spends strong groove (31), on splined shaft (20) The spline (32) of Shi Keyu splined shafts (20) is meshed, and spends strong sliding cam axle sleeve (10) to be equipped with the first admission cam (12).

As shown in Figure 6, two annular grooves are offered on splined shaft (20) and are mounted with the first blocker ring (18), second respectively Blocker ring (19), is additionally provided with circular hole on splined shaft (20) and is provided with retaining spring (16)；Spline slide cam sleeve hole wall (17) exhaust positioning pit (29), air inlet positioning pit (30) are additionally provided with；Spend strong sliding cam axle sleeve (10) and spend between strong axis (20) Positioning ball (28) is installed；First row valve rocker (22) is installed on rocker arm shaft (21), and first row valve rocker is pacified on (22) Equipped with the first roller bearing (24), second row valve rocker (23) is installed on rocker arm shaft (21), second row valve rocker (23) On the second roller bearing (25) is installed.By retaining spring (16) positioning ball (28) exhaust positioning pit (29) air inlet positioning pit (30) The positioning lock of composition, the effect of positioning lock are：Spline slide cam sleeve (10) is positioned at first exhaust cam (13) and Two exhaust cams (14) can drive the position of the first roller bearing (24) and the second roller bearing (25)；It is or spline slide is convex Axle sleeve (10), which is positioned at admission cam (12), can drive the position of the first roller bearing (24)；Ensure to be not in spline slide The situation that camshaft (10) is stopped between above-mentioned two position occurs.When cylinder is in four-cycle operation, ball (28) is positioned In embedded exhaust positioning pit (29), first exhaust cam (13) is by driving the first roller bearing (24) to drive first exhaust Door rocking arm (22), while second exhaust cam (14) is by driving the second roller bearing to drive second row valve rocker；When When automobile needs engine generation slow efficiency, in the embedded air inlet positioning pit (29) of positioning ball (28), admission cam (12) passes through The first roller bearing (24) is driven so as to drive first row valve rocker (22).As shown in Figure 7, splined shaft (20) surface is equipped with Spline (32) and with the coaxially connected synchronous rotary of plate timing gear.

The course of work of the utility model：

When setting enables engine change and circulates slow：

1. automobile is in transport condition, driver or brake pedal is not stepped on or automobile is in neutral gear or steps on clutch During pedal, or pedal of stepping on the throttle, become the power circuit that circulating controling circuit (1) disconnects the magnetic coil (6) of each cylinder, positioning Ball (28) is in exhaust positioning pit (29), and what exhaust iron core (9) be in the spiral annular groove of gas exhaust inspecting (15) waits depth ring groove part Interior rotation, spline slide cam sleeve (10) is rotated with splined shaft (20), when nearly expansion stroke is nearly ended, first row Gas actuated by cams (13) by driving the first roller bearing (24) so as to driving first row valve rocker (22), meanwhile, second row Gas cam (14) opens corresponding row by driving the second roller bearing (25) to drive second row valve rocker (23) Valve, first exhaust cam (13) and second exhaust cam (14) just stop and the first roller soon after induction stroke starts The contact of bearing (24) and the second roller bearing (25)；And admission cam (12) wheel is in company with spline slide cam sleeve (10) rotation Turn, do not drive other parts.

2. automobile, which is in, hangs shelves transport condition, when driver's brake pedal, while do not have stepping on clutch pedal, become Circulating controling circuit (1) stops after supplying fuel oil to engine, while according to the depth of brake pedal, connects respective cylinder Electromagnetic controller (2) power circuit, the magnetic coil (6) after energization produces electromagnetic attraction immediately, and air inlet iron core (8) is in electricity Stretched out under the action of magnetic attraction to direction where the axis of spline slide cam sleeve (10), meanwhile, exhaust iron core (9) is in fulcrum (3) and under the action of lever (4) the spiral annular groove of gas exhaust inspecting (15) is left, as spline slide cam sleeve (10) continues to revolve Turn, exhaust valve closing, first exhaust cam (13) and second exhaust cam (14) just with the first roller bearing (24) and second After roller bearing disengages, air inlet iron core (8) slides into the grade deep helical ring groove part of the spiral annular groove of air inlet (11)；And with Spline sliding cam axle sleeve (10) to continue to rotate, to during piston compression stroke nearly ultimate position, air inlet iron core (8) is Whole process has slipped over air inlet and has controlled the grade deep helical ring groove part of spiral annular groove (11), while also promotes spline slide cam sleeve (10) moved to X-direction, positioning ball (28) is also synchronous after exhaust positioning pit (29) enters air inlet positioning pit (30), and air inlet is convex Wheel (12) has been moved and positioned into the position that can drive the first roller bearing (24)；Again with spline slide cam sleeve (10) Continue to rotate, admission cam (12) drives the first roller bearing (24) so as to drive first row valve rocker (22) and open immediately Corresponding exhaust valve, will compress outside air discharge cylinder in piston compression stroke close to when ending, then in piston original expansion stroke When, cylinder can suck air by the exhaust valve of opening, and admission cam (12) just stops soon after piston original exhaust stroke starts Only contacted with the first roller bearing (24), make exhaust valve closing, piston presses the air in cylinder in former exhaust stroke Contracting；When piston is close to former exhaust stroke top dead center, inlet valve is opened, and releases the compressed air in cylinder；At the same time, into Gas iron core (8) waits deep ring groove part rotation the spiral annular groove (11) of air inlet control.So far, cylinder has been completed：Closed by exhaust valve Close, the induction stroke that inlet valve is opened, the compression stroke that inlet and outlet door is closed, the expansion stroke that inlet and outlet door is closed, air inlet The four-stroke cycle state that the exhaust stroke that door is closed, exhaust valve is opened is formed enters：Beaten by exhaust valve closing, inlet valve The induction stroke opened, the compression travel that inlet and outlet door is closed, the induction stroke that IC Intake Valve Closes, exhaust valve are opened, inlet and outlet The change cyclic process for the two-stroke cycle state that the compression stroke that door is closed is formed.Hereafter, cylinder is with two-stroke cycle state By the compressed air acts being repeated continuously to consume the kinetic energy of automobile, enter slow operating status from automobile is made.

3. automobile, which is in, hangs shelves transport condition, driver or brake pedal or let slip the clutch are not stepped on, or step on oil Door pedal, becomes the power circuit that circulating controling circuit (1) then turns off the magnetic coil (6) of each cylinder, on stent (5) Electromagnetic controller (2) power-off after work immediately, exhaust iron core (9) resetting spring (7), fulcrum (3), lever (4) effect It is lower to be stretched out to direction where the axis of spline slide cam sleeve (10), meanwhile, air inlet iron core (8) leaves air inlet control helical ring Groove；With spline slide cam sleeve (10) continue rotation to the former induction stroke of piston exhaust valve firm closed position when, row Gas iron core (9) slides into the grade deep helical ring groove part of the spiral annular groove (15) of exhaust；Again with spline slide cam sleeve (10) during the former compression stroke nearly ultimate position for continuing to rotate to piston, whole process has slipped over exhaust to exhaust iron core (9) Control spiral annular groove (15) waits deep helical ring groove part, while also promotes and spend strong sliding cam axle sleeve (10) to be moved to X1 directions It is dynamic, and positioning ball (28) is entered exhaust positioning pit (29), first exhaust cam (13), second row from air inlet positioning pit (30) Gas cam (14) is also moved and positioned into the position that can drive the first roller bearing (24) and the second roller bearing (25) respectively； Continue to rotate with spline slide cam sleeve (10) again, first exhaust cam (13), second exhaust cam (14) are same immediately When drive the first roller bearing (24) and the second roller bearing (25) respectively so as to drive first row valve rocker (22) and drive Dynamic second row valve rocker (23) opens corresponding exhaust valve；At the same time, it is vented iron core (9) and slips into the spiral annular groove of gas exhaust inspecting (15) wait rotates in deep ring groove part.So far, cylinder has been completed：The induction stroke opened by exhaust valve closing, inlet valve, The compression stroke that inlet and outlet door is closed, the induction stroke that IC Intake Valve Closes, exhaust valve are opened, the compression punching that inlet and outlet door is closed The two-stroke cycle state that journey is formed enters：The induction stroke opened by exhaust valve closing, inlet valve, inlet and outlet door close The compression stroke closed, the expansion stroke that inlet and outlet door is closed, what the exhaust stroke that IC Intake Valve Closes, exhaust valve are opened was formed The change cyclic process of four-stroke cycle state.

4. when automobile engine is under neutral state, change circulating controling circuit (1) is in the electricity for disconnecting electromagnetic controller (3) Source circuit, and can ensure that when being started, effect of the exhaust iron core (9) in resetting spring (7) and fulcrum (3) and lever (4) The lower startup for entering the spiral annular groove of gas exhaust inspecting (15), first exhaust cam (13) and second exhaust cam (14) in engine Must be in the state that can correspond to the first Roller Shaft of driving (24) and the second roller bearing (25) in journey.

Claims

1. a kind of automobile engine becomes the slow system that circulates, the system is by magnetic coil, resetting spring, air inlet iron core, exhaust iron Core, fulcrum, lever, stent, spline slide cam sleeve, retaining spring, positioning ball, the first blocker ring, the second blocker ring, spline Axis etc. forms；It is characterized in that：Spline slide cam sleeve outer surface is equipped with first exhaust cam, second exhaust cam, air inlet Cam, air inlet control spiral annular groove, the spiral annular groove of gas exhaust inspecting, and the hole wall of spline slide cam sleeve is equipped with spline, exhaust Positioning pit, air inlet positioning pit；Spline slide cam sleeve is installed on splined shaft, and can be in the first blocker ring, the second blocker ring Between slide；Splined shaft is equipped with spline, is also equipped with retaining spring, the first blocker ring, the second blocker ring；Positioning ball is installed on Between splined shaft and spline slide cam sleeve.

2. automobile engine according to claim 1, which becomes, circulates slow system, it is characterised in that：Air inlet controls spiral annular groove By do not wait deep ring groove part, etc. deep helical ring groove part, etc. deep ring groove part form, the spiral annular groove of gas exhaust inspecting is by differing Deep ring groove part, etc. deep helical ring groove part, etc. deep ring groove part composition.