CN115013168B

CN115013168B - Engine cylinder start-stop device

Info

Publication number: CN115013168B
Application number: CN202210730567.9A
Authority: CN
Inventors: 郭立新
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-06-09
Anticipated expiration: 2042-06-24
Also published as: CN115013168A

Abstract

The invention belongs to the technical field of automobile parts, and discloses an engine cylinder starting and stopping device, which comprises a control mechanism, a cylinder stopping mechanism and a resetting mechanism, wherein the control mechanism comprises a shaft sleeve, the shaft sleeve is sleeved on a rotating shaft through a locking structure, the shaft sleeve can rotate along with the rotating shaft around the axis of the shaft sleeve and can axially slide along the rotating shaft, a cam is arranged on the shaft sleeve, the axis of the cam is parallel to the axis of the shaft sleeve, the shaft sleeve is provided with a first working position which enables the cam to be opposite to and abutted against a rocker arm for opening or closing a valve, and a second working position which is axially moved along the rotating shaft by a preset distance, the preset distance is set to be greater than or equal to the width of the cam along the axial direction of the shaft sleeve, the cylinder stopping mechanism is configured to enable the shaft sleeve to be converted from the first working position to the second working position, and the resetting mechanism is configured to reset the shaft sleeve from the second working position to the first working position. The engine cylinder start-stop device is simple in structure, convenient to arrange and low in manufacturing cost.

Description

Engine cylinder start-stop device

Technical Field

The invention relates to the technical field of automobile parts, in particular to an engine cylinder start-stop device.

Background

The cylinder deactivation technology refers to that when the engine is in partial load operation, the fuel supply, ignition and air intake and exhaust of partial cylinders are controlled or cut off through related mechanisms and strategies to stop the work of the engine, so that the load rate of the residual working cylinders is increased, the efficiency is improved, and the purpose of improving the fuel economy is achieved. At the same time, the increase in load factor also brings about an increase in exhaust gas temperature, which is of importance for aftertreatment systems employing SCR technology. The improvement of the exhaust temperature can improve the conversion efficiency of the SCR catalyst, and is beneficial to the efficient operation of the whole aftertreatment system.

However, when the engine adopts the cylinder deactivation technology, if the fuel injection and ignition of the deactivated cylinders are only interrupted, the deactivated cylinders still continuously charge and exhaust, and the fuel saving effect is not obvious due to pumping loss. Therefore, in an engine employing a cylinder deactivation technique, there is a need for an engine cylinder start-stop device to control the intake and exhaust valves of a cylinder to stop or open the intake and exhaust of the cylinder.

In the prior art, the latch assembly is controlled by a hydraulic mechanism to control the valve of the cylinder, the structure utilizes engine oil of an engine, the engine oil pressure of the engine is related to the engine speed, and the engine oil pressure difference is large at different speeds. In addition, the viscosity of engine oil at different temperatures is very different, and the difference of the viscosity can cause great friction to the cylinder deactivation mechanism and possibly cause leakage. Meanwhile, the response of the cylinder stopping mechanism under different engine oil pressures and different viscosities is different, so that the cylinder stopping mechanism needs to be calibrated under different working conditions and different temperatures of an engine, and meanwhile, an oil way of engine oil needs to be modified. In summary, the engine cylinder start-stop device in the prior art has a complex structure, difficult arrangement and high manufacturing cost.

Therefore, the above-described problems are to be solved.

Disclosure of Invention

The invention aims to provide an engine cylinder starting and stopping device which is simple in structure, convenient to arrange and low in manufacturing cost.

To achieve the purpose, the invention adopts the following technical scheme:

an engine cylinder start-stop apparatus comprising:

the control mechanism comprises a shaft sleeve, the shaft sleeve is sleeved on a rotating shaft through a locking structure, the locking structure is configured to lock the shaft sleeve along the circumferential direction of the rotating shaft, the shaft sleeve can rotate along the rotating shaft around the axis of the shaft sleeve and can axially slide along the rotating shaft, a cam is arranged on the shaft sleeve, the axis of the cam is parallel to the axis of the shaft sleeve, the shaft sleeve is provided with a first working position enabling the cam to be opposite to and abutted against a rocker arm for opening or closing a valve of an engine cylinder, and a second working position after the cam moves for a preset distance along the axial direction of the rotating shaft, and the preset distance is set to be larger than or equal to the width of the cam along the axial direction of the shaft sleeve;

a cylinder deactivation mechanism configured to switch the sleeve from the first operating position to the second operating position; and

and a reset mechanism configured to reset the sleeve from the second operating position to the first operating position.

Preferably, the cylinder deactivation mechanism comprises a first groove, a second groove, a third groove and a push rod, wherein the first groove, the second groove and the third groove are all arranged on the shaft sleeve, the first groove and the second groove extend along the circumferential direction of the shaft sleeve and are arranged along the axial interval of the shaft sleeve, the distance between the first groove and the second groove is larger than or equal to the width of the cam along the axial direction of the shaft sleeve, the first groove and the second groove are communicated through the third groove, the push rod is fixedly arranged in a plane perpendicular to the central axis of the push rod, the push rod is provided with a first working state far away from the shaft sleeve and a second working state capable of extending into the first groove, and when the shaft sleeve rotates along with the shaft sleeve around the axis of the shaft sleeve, the push rod in the second working state can slide into the second groove through the third groove.

Preferably, the groove bottom of the third groove extends into the first groove, the depth of the groove bottom of the third groove extending into the first groove is larger than that of the first groove, and the end part of the push rod can be attached to the groove bottom of the third groove extending into the first groove.

Preferably, the depth of the junction between the third groove and the second groove is smaller than the depth of the second groove, and the distance of the push rod along the radial direction of the shaft sleeve is larger than the distance between the push rod in the first working state and the deepest part of the third groove along the radial direction of the shaft sleeve.

Preferably, the rocker arm and the push rod are arranged at intervals along the axial direction of the shaft sleeve, and the projection of the third groove in the axial direction of the shaft sleeve is not overlapped with the projection of the cam in the axial direction of the shaft sleeve.

Preferably, the engine cylinder start-stop device comprises an electromagnetic valve, and the push rod is a valve core of the electromagnetic valve.

Preferably, the solenoid valve is provided with a first return spring capable of being elastically deformed when the valve element is switched from the first operating state to the second operating state, so as to have elastic potential energy for enabling the valve element to return to the first operating state when the solenoid valve is de-energized.

Preferably, the reset mechanism includes a second reset spring and a first stop, where the second reset spring is connected or abutted between the first stop and the shaft sleeve, and when the shaft sleeve is switched from the first working position to the second working position, the second reset spring can be elastically deformed, so that the shaft sleeve has elastic potential energy for resetting from the second working position to the first working position when the push rod is in the first working state.

Preferably, the engine cylinder start-stop device further comprises a second stop block, the second stop block is arranged on one side, away from the first stop block, of the shaft sleeve, and the shaft sleeve at the first working position can be abutted against the second stop block.

Preferably, the locking structure includes a boss and a fourth groove, the boss and the fourth groove extend along an axial direction of the rotating shaft, the boss can be embedded in the fourth groove, and the boss and the fourth groove are alternatively arranged on the shaft sleeve and the rotating shaft.

The invention has the beneficial effects that: in the invention, when the shaft sleeve is positioned at the first working position, the rocker arm can be abutted with the cam, the rocker arm can control the valve of the air cylinder to be opened or closed in the process that the cam rotates around the axis of the rotating shaft along with the shaft sleeve, when the shaft sleeve is switched from the first working position to the second working position, the cam is misplaced with the rocker arm, the cam can not be abutted with the rocker arm in the process that the cam rotates around the axis of the rotating shaft along with the shaft sleeve, so that the control of the rocker arm is lost, the rocker arm can not control the valve of the air cylinder, and the valve can be ensured to be always in a closed state when the engine is stopped.

Drawings

FIG. 1 is a schematic diagram of an engine cylinder start-stop apparatus in an embodiment of the present invention;

FIG. 2 is a schematic view of a cylinder deactivation mechanism in an embodiment of the present invention.

In the figure:

1. a control mechanism; 11. a shaft sleeve; 111. a cam; 12. a rotating shaft; 121. a fourth groove;

2. a cylinder deactivation mechanism; 21. a first groove; 22. a second groove; 23. a third groove; 24. an electromagnetic valve; 241. a push rod; 242. a first return spring;

3. a reset mechanism; 31. a second return spring; 32. a first stopper;

4. and a second stop block.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1 and 2, the present embodiment provides an engine cylinder start-stop apparatus including a control mechanism 1, a cylinder stopping mechanism 2, and a return mechanism 3, the control mechanism 1 including a sleeve 11, the sleeve 11 being fitted over a rotating shaft 12 by a lock structure, the lock structure being configured to lock the sleeve 11 in a circumferential direction of the rotating shaft 12, the sleeve 11 being rotatable about an axis thereof with the rotating shaft 12 and being slidable axially along the rotating shaft 12, the sleeve 11 being provided with a cam 111, an axis of the cam 111 being parallel to an axis of the sleeve 11, the sleeve 11 having a first operating position at which the cam 111 is capable of being brought into face-contact with a rocker arm (not shown) for opening or closing a valve of an engine cylinder, and a second operating position after being moved in an axial direction of the rotating shaft 12 by a preset distance, the preset distance being set to be greater than or equal to a width of the cam 111 in the axial direction of the sleeve 11, the cylinder stopping mechanism 2 being configured to switch the sleeve 11 from the first operating position to the second operating position, and the return mechanism 3 being configured to return the sleeve 11 from the second operating position to the first operating position.

In this embodiment, when the shaft sleeve 11 is in the first working position, the rocker arm can be abutted with the cam 111, the rocker arm can control the valve of the cylinder to be opened or closed in the process that the cam 111 rotates around the axis of the rotating shaft 12 along with the shaft sleeve 11, when the shaft sleeve 11 is switched from the first working position to the second working position, the cam 111 is not abutted with the rocker arm in the process that the cam 111 rotates around the axis of the rotating shaft 12 along with the shaft sleeve 11, so as to lose control over the rocker arm, thereby the rocker arm can not control the valve of the cylinder, and further, the valve can be kept in a closed state all the time when the engine stops.

Specifically, in this embodiment, when the cylinder is in the normal working mode, the sleeve 11 is in the first working position, the rocker arm can be opposite to the cam 111 and is abutted to the cam 111, when the sleeve 11 rotates along with the rotating shaft 12, the cam 111 can drive the rocker arm to rotate around the rocker arm shaft (not shown in the figure), wherein the valve and the cam 111 are respectively located at two sides of the rocker arm shaft, the rocker arm can control the valve to open or close under the driving of the cam 111, and it is understood that the connecting structure of the rocker arm, the rocker arm shaft and the valve in this embodiment is the prior art, so that details are not repeated in this embodiment. When the cylinder is in the cylinder deactivation mode, the cylinder deactivation mechanism 2 enables the shaft sleeve 11 to be switched from the first working position to the second working position so as to enable the cam 111 to be misplaced with the rocker arm, when the shaft sleeve 11 rotates along with the rotating shaft 12, the rocker arm cannot be abutted with the cam 111, therefore, the rocker arm cannot control the valve to be switched between on and off, the normally closed state of the valve is controlled to be kept, when the cylinder is restored to the normal working mode, the reset mechanism 3 enables the shaft sleeve 11 to be restored to the first working position, and the rocker arm can be opposite to the cam 111 again and abutted to the cam 111, so that the valve can be controlled to be switched between on and off again.

Preferably, the cylinder deactivation mechanism 2 in this embodiment includes a first groove 21, a second groove 22, a third groove 23 and a push rod 241, where the first groove 21, the second groove 22 and the third groove 23 are all formed on the shaft sleeve 11, the first groove 21 and the second groove 22 extend along the circumferential direction of the shaft sleeve 11 and are disposed at intervals along the axial direction of the shaft sleeve 11, the distance between the first groove 21 and the second groove 22 is greater than or equal to the width of the cam 111 along the axial direction of the shaft sleeve 11, the first groove 21 and the second groove 22 are communicated through the third groove 23, the push rod 241 is fixedly disposed in a plane perpendicular to the third groove, the push rod 241 has a first working state far away from the shaft sleeve 11 and a second working state capable of extending into the first groove 21, and when the shaft sleeve 11 rotates around the axis of the shaft sleeve 12, the push rod 241 in the second working state can slide into the second groove 22 through the third groove 23, i.e. when the shaft sleeve 11 is in the first working position, the push rod 241 is opposite to the first groove 21, the push rod 241 can move along the radial direction of the shaft sleeve 11, and can slide into the second groove 23 along with the second groove 23 when the first groove 21 and the second groove 23 is in the second working position, and the second groove 23 can slide into the second groove 23 and the second groove 23 along the first groove 23 and the second groove 23 when the first groove is in the second working position. When the cylinder resumes the normal operation mode, the push rod 241 moves out of the second groove 22, and the reset mechanism 3 resets the sleeve 11 from the second operation position to the first operation position.

It will be appreciated that the shaft sleeve 11 in this embodiment is provided with two cams 111, one of the cams 111 is used for controlling the intake valve, the other cam 111 is used for controlling the exhaust valve, the first groove 21, the second groove 22 and the third groove 23 in this embodiment are all disposed on one side of one of the two cams 111 away from the other of the two cams 111, however, in other alternative embodiments, the first groove 21, the second groove 22 and the third groove 23 may be disposed between the two cams 111, which is not particularly limited in this embodiment.

Further, in the present embodiment, the groove bottom of the third groove 23 extends into the first groove 21, the depth of the groove bottom of the third groove 23 extending into the first groove 21 is greater than the depth of the first groove 21, the end portion of the push rod 241 can be abutted with the groove bottom of the third groove 23 extending into the first groove 21, i.e. the distance between the push rod 241 in the radial direction of the sleeve 11 and the groove bottom of the third groove 23 extending into the first groove 21 is greater than the distance between the push rod 241 and the groove bottom of the third groove 23 extending into the first groove 21 in the radial direction of the sleeve 11, when the push rod 241 slides relatively in the first groove 21 to the junction between the first groove 21 and the third groove 23, the end portion of the push rod 241 can be abutted with the side wall of the junction between the first groove 21 and the third groove 23, thereby ensuring that the push rod 241 can slide relatively into the third groove 23, and does not slide relatively in the first groove 21.

Based on the above, in the present embodiment, the depth of the junction between the third groove 23 and the second groove 22 is smaller than the depth of the second groove 22, and the distance between the push rod 241 and the deepest part of the third groove 23 along the radial direction of the sleeve 11 in the first working state is larger than the distance between the push rod 241 and the deepest part of the third groove 23 along the radial direction of the sleeve 11, where in the present embodiment, the depth of the third groove 23 gradually increases from the junction between the third groove 23 and the first groove 21 to the junction between the third groove 23 and the second groove 22, i.e. the deepest part of the third groove 23 is located at the junction between the third groove 23 and the second groove 22, however, in other alternative embodiments, the depth of each position of the third groove 23 may be equal to the depth of the junction between the third groove 23 and the first groove 21, which is not particularly limited in the present embodiment. Because the stroke of the push rod 241 along the radial direction of the shaft sleeve 11 is greater than the distance between the deepest part of the push rod 241 and the third groove 23 in the first working state along the radial direction of the shaft sleeve 11, and the depth of the junction between the third groove 23 and the second groove 22 is smaller than the depth of the second groove 22, when the push rod 241 slides into the second groove 22, the push rod 241 can be abutted with the side wall of the junction between the second groove 22 and the third groove 23, and cannot slide into the third groove 23 from the second groove 22.

Further, the rocker arm and the push rod 241 in the present embodiment are disposed at intervals along the axial direction of the shaft sleeve 11, and the projection of the third groove 23 in the axial direction of the shaft sleeve 11 does not overlap with the projection of the cam 111 in the axial direction of the shaft sleeve 11, that is, when the push rod 241 extends into the third groove 23 and slides relative to the third groove 23, the rocker arm abuts against the cylindrical surface of the shaft sleeve 11 and does not abut against the cam 111, so as to avoid the interference of the shaft sleeve 11 in the axial direction due to the large friction between the rocker arm and the cam 111.

In the present embodiment, the engine cylinder start-stop device preferably includes the solenoid valve 24, the pushrod 241 is a spool of the solenoid valve 24, and the spool is capable of being switched from the first operation state to the second operation state when the solenoid valve 24 is energized, and from the second operation state to the first operation state when the solenoid valve 24 is deenergized. Compared with the special driving structure for driving the independent rod to move along the radial direction of the shaft sleeve 11, the mode of axially moving the shaft sleeve 11 along the rotating shaft 12 through the electromagnetic valve 24 in the embodiment has simple structure.

To ensure that the valve spool can be switched from the second operating state to the first operating state when the solenoid valve 24 is de-energized, the solenoid valve 24 is provided with a first return spring 242, the first return spring 242 being capable of elastically deforming when the valve spool is switched from the first operating state to the second operating state to have elastic potential energy that enables the valve spool to return to the first operating state when the solenoid valve 24 is de-energized, i.e., the first return spring 242 being capable of being compressed when the valve spool is switched from the first operating state to the second operating state, the first return spring 242 being capable of returning to deform when the solenoid valve 24 is de-energized to return the valve spool.

Preferably, the return mechanism 3 in this embodiment includes a second return spring 31 and a first stopper 32, the second return spring 31 is connected or abutted between the first stopper 32 and the sleeve 11, when the sleeve 11 is shifted from the first operating position to the second operating position, the second return spring 31 can be elastically deformed to have elastic potential energy for returning the sleeve 11 from the second operating position to the first operating position when the push rod 241 is in the first operating state, that is, when the electromagnetic valve 24 is powered off, the push rod 241 returns to the first operating state, the push rod 241 releases the restriction on the sleeve 11, and the second return spring 31 can return the sleeve 11. It will be appreciated that the first stop 32 can limit the movement of the sleeve 11 in the axial direction of the shaft 12.

Further, the engine cylinder start-stop device further comprises a second stop block 4, the second stop block 4 is arranged on one side, far away from the first stop block 32, of the shaft sleeve 11 in the first working position can be abutted against the second stop block 4, the second stop block 4 can limit the shaft sleeve 11 in the resetting process, and therefore the cam 111 on the shaft sleeve 11 after resetting can be guaranteed to be exactly opposite to the rocker arm.

In this embodiment, the locking structure preferably includes a boss and a fourth groove 121, where the boss (not shown) and the fourth groove 121 extend along the axial direction of the rotating shaft 12, the boss can be embedded in the fourth groove 121, the boss and the fourth groove 121 are alternatively disposed on the shaft sleeve 11 and the rotating shaft 12, in this embodiment, the boss is disposed on a side of the shaft sleeve 11 facing the rotating shaft 12, the fourth groove 121 is disposed on the rotating shaft 12, and the boss and the fourth groove 121 cooperate to lock the shaft sleeve 11 along the circumferential direction of the rotating shaft 12.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. An engine cylinder start-stop apparatus, comprising:

the control mechanism (1) comprises a shaft sleeve (11), the shaft sleeve (11) is sleeved on a rotating shaft (12) through a locking structure, the locking structure is configured to lock the shaft sleeve (11) along the circumferential direction of the rotating shaft (12), the shaft sleeve (11) can rotate along the rotating shaft (12) around the axis of the shaft and can axially slide along the rotating shaft (12), a cam (111) is arranged on the shaft sleeve (11), the axis of the cam (111) is parallel to the axis of the shaft sleeve (11), the shaft sleeve (11) is provided with a first working position enabling the cam (111) to be opposite to and abutted against a rocker arm for opening or closing a valve of an engine cylinder, and a second working position after the shaft sleeve (11) moves a preset distance along the axial direction of the rotating shaft (12), and the preset distance is set to be larger than or equal to the width of the cam (111) along the axial direction of the shaft sleeve (11);

-a cylinder deactivation mechanism (2) configured to switch the sleeve (11) from the first operating position to the second operating position; and

a reset mechanism (3) configured to reset the sleeve (11) from the second operating position to the first operating position;

the cylinder deactivation mechanism (2) comprises a first groove (21), a second groove (22), a third groove (23) and a push rod (241), wherein the first groove (21), the second groove (22) and the third groove (23) are respectively arranged on the shaft sleeve (11), the first groove (21) and the second groove (22) extend along the circumferential direction of the shaft sleeve (11) and are arranged at intervals along the axial direction of the shaft sleeve (11), the distance between the first groove (21) and the second groove (22) is larger than or equal to the width of the cam (111) along the axial direction of the shaft sleeve (11), the first groove (21) and the second groove (22) are communicated through the third groove (23), the push rod (241) is fixedly arranged in a plane perpendicular to the central line of the push rod, the push rod (241) is provided with a first working state far away from the shaft sleeve (11) and a second working state capable of extending into the first groove (11), and when the push rod (241) can slide into the shaft sleeve (11) along with the second groove (11) along with the axial direction of the second groove (11), and when the push rod (22) slides along with the second groove (11);

the groove bottom of the third groove (23) extends into the first groove (21), the depth of the groove bottom of the third groove (23) extending into the first groove (21) is larger than the depth of the first groove (21), and the end part of the push rod (241) can be attached to the groove bottom of the third groove (23) extending into the first groove (21);

the depth of the junction between the third groove (23) and the second groove (22) is smaller than the depth of the second groove (22), and the distance between the push rod (241) and the third groove (23) along the radial direction of the shaft sleeve (11) is larger than the distance between the push rod (241) and the third groove (23) along the radial direction of the shaft sleeve (11) in the first working state.

2. The engine cylinder start-stop device according to claim 1, characterized in that the rocker arm and the pushrod (241) are disposed at intervals along the axial direction of the boss (11), and the projection of the third groove (23) in the axial direction of the boss (11) does not overlap with the projection of the cam (111) in the axial direction of the boss (11).

3. The engine cylinder start-stop device according to claim 1, characterized in that it comprises a solenoid valve (24), the pushrod (241) being a spool of the solenoid valve (24).

4. An engine cylinder start-stop device according to claim 3, characterized in that the solenoid valve (24) is provided with a first return spring (242), the first return spring (242) being elastically deformable when the valve element is switched from the first operating state to the second operating state, so as to have elastic potential energy that returns the valve element to the first operating state when the solenoid valve (24) is de-energized.

5. The engine cylinder start-stop device according to claim 1, characterized in that the return mechanism (3) comprises a second return spring (31) and a first stopper (32), the second return spring (31) being connected or abutting between the first stopper (32) and the sleeve (11), the second return spring (31) being elastically deformable when the sleeve (11) is shifted from the first working position to the second working position, so as to have an elastic potential energy that returns the sleeve (11) from the second working position to the first working position when the push rod (241) is in the first working state.

6. The engine cylinder start-stop device according to claim 5, characterized in that it further comprises a second block (4), said second block (4) being arranged on a side of said sleeve (11) remote from said first block (32), said sleeve (11) being in said first operating position being able to abut said second block (4).

7. The engine cylinder start-stop device according to claim 1, wherein the locking structure comprises a boss and a fourth groove (121), the boss and the fourth groove (121) extend along the axial direction of the rotating shaft (12), the boss can be embedded in the fourth groove (121), and the boss and the fourth groove (121) are alternatively arranged on the shaft sleeve (11) and the rotating shaft (12).