阅读说明：本技术 发动机停缸装置及方法 (Engine cylinder deactivation device and method ) 是由 孙志国 杨冉 付艳萍 于 2021-08-09 设计创作，主要内容包括：本申请涉及发动机试验技术领域,尤其涉及一种发动机停缸装置及方法,包括有用于连接在高压油管和喷油器之间的连接体,连接体设置有连通于高压油管和喷油器之间的第一通道、与第一通道连通的第二通道、以及用于控制第二通道的通断的调节组件,第二通道远离第一通道的一端连通有用于将油导出的输油管。如此设置,在高压油管和喷油器之间加装连接体,既可以在不停机的状态下完成停缸实现,又可以将断油产生的燃油导出到发动机外,远离高温区域,避免火灾发生,有利于提升停缸的安全可靠性。(The application relates to the technical field of engine tests, in particular to an engine cylinder stopping device and an engine cylinder stopping method. So set up, install the connector additional between high pressure fuel pipe and sprayer, both can accomplish the realization of stopping the jar under the state of not shutting down, can derive the fuel that the fuel cut off produced outside the engine again, keep away from the high temperature region, avoid the conflagration to take place, be favorable to promoting the fail safe nature who stops the jar.)

1. The utility model provides an engine cylinder deactivation device, characterized in that, including being used for connecting connector (2) between high pressure fuel pipe (1) and sprayer (8), connector (2) be provided with communicate in high pressure fuel pipe (1) with first passageway (9) between sprayer (8), with the second passageway of first passageway (9) intercommunication and be used for controlling the adjusting part of the break-make of second passageway, the second passageway is kept away from the one end intercommunication of first passageway (9) has defeated oil pipe (6) that are used for deriving oil.

2. An engine cylinder deactivation device according to claim 1, further comprising a fuel tank (7), wherein an end of the fuel delivery pipe (6) remote from the second channel communicates with the fuel tank (7).

3. An engine deactivation device according to claim 2, characterized in that a damping layer is arranged in said oil tank (7).

4. An engine cylinder deactivation device according to claim 1, characterized in that the connecting body (2) is provided as a three-way body, a first port of which communicates with the high pressure fuel line (1), a second port communicates with the fuel injector (8), and a third port communicates with the fuel delivery line (6) and is provided with the adjustment assembly.

5. The engine cylinder deactivation device according to claim 4, characterized in that the third port comprises a drain passage (10) and a regulating passage (12), the drain passage (10) is communicated between the regulating passage (12) and the first passage (9), and a drain hole (13) communicated with the oil delivery pipe (6) is formed in the side wall of the regulating passage (12); the adjusting assembly comprises an adjusting rod (4) which is in screwed connection with the inside of the adjusting channel (12), one end of the adjusting rod (4) is provided with a plugging portion used for sealing the oil drainage channel (10), and the other end of the adjusting rod is provided with a rotating portion (15) used for driving the adjusting rod (4) to rotate.

6. The engine cylinder deactivation device according to claim 5, characterized in that the blocking portion is provided as a conical head (14), and an end of the oil drain passage (10) remote from the first passage (9) is provided with a conical hole (11) into which the conical head (14) is fitted.

7. Engine cylinder deactivation device according to claim 5, characterized in that a sealing structure is arranged between the adjusting rod (4) and the adjusting channel (12), the sealing structure comprises a smooth surface and a sealing ring (3), one of the smooth surface and the sealing ring (3) is arranged on the outer wall of the adjusting rod (4), and the other one is arranged on the inner wall of the adjusting channel (12).

8. The engine cylinder deactivation device according to claim 5, characterized in that a welding sleeve (5) communicated with the oil delivery pipe (6) is communicated with the oil drainage hole (13).

9. Engine deactivation device according to claim 4, characterized in that said first port is provided with an external threaded portion for connection with said high pressure fuel line (1), and said second port is provided with a movable nut for connection with a fuel injector (8), said external threaded portion matching said movable nut.

10. An engine cylinder deactivation method based on the engine cylinder deactivation device according to any one of claims 1 to 9, comprising:

connecting the connecting body (2) between the high pressure fuel pipe (1) and the fuel injector (8) such that the first passage (9) conducts the high pressure fuel pipe (1) and the fuel injector (8);

communicating the oil delivery tube (6) with the second channel;

and adjusting the adjusting component to conduct the second channel, so that the oil in the first channel (9) is led out by the second channel and the oil delivery pipe (6).

Technical Field

The application relates to the technical field of engine tests, in particular to an engine cylinder deactivation device and method.

Background

During bench test or actual operation, an engine (often seen in marine diesel engines) needs to stop the work of a target cylinder, but needs other normal cylinders to continue working, and when conditions are met, the work of the target cylinder is resumed, and the step is called cylinder stopping or cylinder sealing.

At present, a cylinder stopping method is generally adopted, and usually in an engine stopping state, a wrench is used for loosening a high-pressure fuel pipe of the cylinder, so that high-pressure fuel is leaked at the joint of the high-pressure fuel pipe and a fuel injector, the fuel in the fuel injector cannot build opening pressure, the fuel injector cannot inject fuel into the cylinder, and the aim of stopping the cylinder is fulfilled. The cylinder deactivation method has great defects that firstly, fuel oil leaks, and fire disasters can happen when the fuel oil meets high temperature. And secondly, the standard requirement is not met, the cylinder deactivation test is carried out under the condition that the engine does not stop according to the test standard requirement, the cylinder deactivation mode needs the engine to be in a stop state, and if the cylinder deactivation test is carried out under the condition that the engine does not stop, the danger coefficient is higher.

Therefore, how to solve the problems that fuel oil leakage is easy to occur in the existing cylinder deactivation mode, potential safety hazards exist, and the requirements of test standards are not met is a key technical problem to be solved by technical personnel in the field.

Disclosure of Invention

In order to overcome the problems in the related art at least to a certain extent, the application aims to provide the cylinder deactivation device and the cylinder deactivation method for the engine, which can solve the problems that fuel oil leakage is easy to occur in the existing cylinder deactivation mode, potential safety hazards exist, and the requirements of test standards are not met. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the application are described in detail in the following.

The application provides an engine cylinder stopping device, including being used for connecting the connector between high pressure fuel pipe and sprayer, the connector be provided with communicate in high pressure fuel pipe with first passageway between the sprayer, with the second passageway of first passageway intercommunication and be used for control the adjusting part of the break-make of second passageway, the second passageway is kept away from the one end intercommunication of first passageway has the defeated oil pipe that is used for deriving oil.

Preferably, the oil delivery pipe is communicated with the oil tank at one end far away from the second channel.

Preferably, a buffer layer is arranged in the oil tank.

Preferably, the connecting body sets up to the tee bend body, the first port of tee bend body with high pressure fuel pipe intercommunication, the second port with the sprayer intercommunication, the third port with defeated oil pipe intercommunication and be provided with adjusting part.

Preferably, the third port comprises an oil drainage channel and an adjusting channel, the oil drainage channel is communicated between the adjusting channel and the first channel, and an oil drainage hole communicated with the oil delivery pipe is formed in the side wall of the adjusting channel; the adjusting assembly comprises an adjusting rod in the adjusting channel in a threaded connection mode, one end of the adjusting rod is provided with a plugging portion used for sealing the oil drainage channel, and the other end of the adjusting rod is provided with a rotating portion used for driving the adjusting rod to rotate.

Preferably, the blocking portion is a conical head, and a conical hole for the conical head to be embedded into is formed in one end, far away from the first channel, of the oil drainage channel.

Preferably, a sealing structure is arranged between the adjusting rod and the adjusting channel, the sealing structure comprises a smooth surface and a sealing ring, one of the smooth surface and the sealing ring is arranged on the outer wall of the adjusting rod, and the other one of the smooth surface and the sealing ring is arranged on the inner wall of the adjusting channel.

Preferably, the oil drainage hole is communicated with a welding sleeve communicated with an oil pipeline.

Preferably, the first port is provided with an external thread part used for being connected with the high-pressure oil pipe, the second port is provided with a movable nut used for being connected with the oil sprayer, and the external thread part is matched with the movable nut.

The application also provides an engine cylinder deactivation method, which is based on the engine cylinder deactivation device, and comprises the following steps:

connecting the connecting body between the high-pressure oil pipe and the oil injector so that the first channel conducts the high-pressure oil pipe and the oil injector;

communicating the oil delivery pipe with the second passage;

and adjusting the adjusting assembly to conduct the second channel so that the oil in the first channel is led out by the second channel and the oil conveying pipe.

The technical scheme provided by the application can comprise the following beneficial effects:

when the engine works, the connecting body is arranged between the high-pressure oil pipe and the oil sprayer, the high-pressure oil pipe is communicated with the oil sprayer through the first channel, the adjusting assembly is kept in the first state, the second channel is closed, high-pressure fuel oil sprayed by the oil spraying pump enters the connecting body through the high-pressure oil pipe, the fuel oil enters the oil sprayer body through the first channel, when the fuel oil pressure in the oil sprayer reaches the opening pressure of the oil sprayer, the oil sprayer starts to spray oil, and each cylinder of the engine works normally. During a cylinder stopping test, oil cut and cylinder stop operation needs to be carried out on a certain cylinder, the adjusting assembly is adjusted to be in a second state, the second channel is opened, fuel oil in the high-pressure fuel pipe enters the connector, flows into the oil conveying pipe through the first channel and the second channel and is guided out of the engine through the oil conveying pipe, and due to the fact that the high-pressure fuel oil is decompressed through the connector, opening pressure cannot be built in an oil injector body, oil cannot be injected by the oil injector, and therefore oil cut and cylinder stop of the cylinder are achieved.

So set up, install the connector additional between high pressure fuel pipe and sprayer, both can accomplish the realization of stopping the jar under the state of not shutting down, can derive the fuel that the fuel cut off produced outside the engine again, keep away from the high temperature region, avoid the conflagration to take place, be favorable to promoting the fail safe nature who stops the jar.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of the present engine deactivation device, according to some exemplary embodiments;

FIG. 2 is a cross-sectional view of the present engine deactivation device, according to certain exemplary embodiments;

FIG. 3 is a perspective view of a tee body shown in accordance with some exemplary embodiments;

FIG. 4 is a cross-sectional view of the tee body shown in accordance with some exemplary embodiments;

FIG. 5 is a perspective view of an adjustment lever shown in accordance with some exemplary embodiments;

FIG. 6 is a cross-sectional view of an adjustment stem shown in accordance with some exemplary embodiments.

In the figure: 1. a high pressure oil pipe; 2. a linker; 3. a seal ring; 4. adjusting a rod; 5. welding a sleeve; 6. an oil delivery pipe; 7. an oil tank; 8. an oil injector; 9. a first channel; 10. an oil drainage channel; 11. a tapered hole; 12. adjusting the channel; 13. an oil drainage hole; 14. a conical head; 15. a rotating part; 16. sealing the groove.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with aspects of the present application.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 6, the present embodiment provides an engine cylinder deactivation device, including a connecting body 2, a first channel 9, a second channel and an adjusting component are arranged inside the connecting body 2, wherein the connecting body 2 is penetrated through by the first channel 9, when the connecting body is installed, the connecting body 2 is connected between a high pressure fuel pipe 1 and a fuel injector 8, and the first channel 9 is communicated between the high pressure fuel pipe 1 and the fuel injector 8 to communicate the high pressure fuel pipe 1 and the fuel injector 8, specifically, one end of the first channel 9 is connected with the high pressure fuel pipe 1, and the other end is connected with the fuel injector 8.

The second channel is used for communicating the first channel 9 with the outer side of the connecting body 2, wherein one end of the second channel is communicated with the second channel, the other end of the second channel is communicated with the oil delivery pipe 6, oil in the first channel 9 can be led out through the oil delivery pipe 6 and the second channel, and then oil between the high-pressure oil pipe 1 and the oil injector 8 is led out, so that opening pressure cannot be built in the oil injector 8, the oil injector 8 cannot inject oil, and therefore oil cutting and cylinder stopping are achieved. Wherein, export the engine outside through defeated oil pipe 6 with oil, can keep away from the high temperature region with the fuel that needs reveal, avoid the fuel to meet high temperature and take place the conflagration.

And the adjusting component is used for controlling the on-off of the second channel, the adjusting component has two states, the second channel is in an open circuit state in the first state, and the second channel is in a closed circuit state in the second state, so that the on-off of the oil supply of the oil sprayer 8 is controlled by controlling the on-off of the second channel, and the operation is convenient, stable and reliable.

When the engine works, the connecting body 2 is arranged between the high-pressure oil pipe 1 and the oil injector 8, the high-pressure oil pipe 1 and the oil injector 8 are conducted through the first channel 9, the adjusting assembly is kept in the first state, the second channel is closed, high-pressure fuel oil sprayed by the oil injection pump enters the connecting body 2 through the high-pressure oil pipe 1, the fuel oil enters the oil injector 8 through the first channel 9, when the pressure of the fuel oil in the oil injector 8 reaches the opening pressure of the oil injector 8, the oil injector 8 starts to inject oil, and each cylinder of the engine works normally. During a cylinder stopping test, the oil cut and cylinder stop operation of a certain cylinder is needed, the adjusting assembly is adjusted to be in a second state, the second channel is opened, fuel oil in the high-pressure oil pipe 1 enters the connector 2, flows into the oil conveying pipe 6 through the first channel 9 and the second channel, and is guided out of the engine through the oil conveying pipe 6, and due to the fact that the high-pressure fuel oil is decompressed through the connector 2, opening pressure cannot be built in the oil sprayer 8, oil cannot be sprayed by the oil sprayer 8, and therefore the oil cut and cylinder stop of the cylinder are achieved.

So set up, install connector 2 additional between high pressure fuel pipe 1 and sprayer 8, both can accomplish the realization of stopping the jar under the state of not shutting down, can lead out the fuel that the fuel cut off produced outside the engine again, keep away from the high temperature region, avoid the conflagration to take place, be favorable to promoting the fail safe nature of stopping the jar.

In this embodiment, the engine cylinder deactivation device further includes an oil tank 7, where the oil tank 7 is used for accommodating fuel oil generated by fuel cut, and specifically, one end of the oil delivery pipe 6 is communicated with the second channel, and the other end is communicated with the oil tank 7, so that the fuel oil in the high-pressure oil pipe 1 can be guided into the oil tank 7, thereby facilitating secondary utilization of the fuel oil and avoiding waste of the fuel oil.

Wherein, be provided with the buffer layer in the oil tank 7, because the fuel in high pressure fuel pipe 1 is the high pressure state, the fuel leads out to the buffer layer through defeated oil pipe 6 on, can the fuel splash everywhere in oil tank 7.

Here, the buffer layer is provided as a sponge mat laid on the bottom of the fuel tank 7.

In some embodiments, the connecting body 2 is provided with a tee body, and the tee body is provided with three communicated through holes, wherein a first through hole is communicated with the high-pressure oil pipe 1 so that fuel oil in the high-pressure oil pipe 1 can enter the tee body; the second channel is communicated with the fuel injector 8 so that fuel in the tee joint body can enter the fuel injector 8; the third channel is communicated with the oil delivery pipe 6 and is provided with the adjusting component, and the on-off of the third port and the oil delivery pipe 6 can be controlled through the adjusting component. Therefore, the three-way body is adopted, the structure is simple, the materials are convenient to obtain, and the processing cost is favorably saved.

Specifically, the tee bend body sets up to straight tee bend, has two through openings and a side opening promptly, and here, first opening and second opening are the through opening, and the third opening is the side opening, so, make things convenient for the connection of high pressure fuel pipe 1 and sprayer 8, and can guarantee that high-pressure fuel is at the internal straight line circulation of tee bend, reliable and stable.

Of course, the tee can also be arranged as a Y-shaped tee.

In order to facilitate the installation of the connecting body 2 between the high-pressure oil pipe 1 and the oil injector 8, the first through hole is provided with an external thread part for being in threaded connection with the end part of the high-pressure oil pipe 1, the second through hole is provided with an internal thread part for being in threaded connection with the oil injector 8, and the internal thread part is matched with the external thread part, so that the reconnection of the high-pressure oil pipe 1 and the oil injector 8 is not influenced after the connecting body 2 is additionally installed. When the cylinder stopping test is needed, the connector 2 is installed between the high-pressure oil pipe 1 and the oil sprayer 8, when the cylinder stopping test is not needed, the connector 2 can be detached, the high-pressure oil pipe 1 and the oil sprayer 8 are connected for the second time, the detachment is convenient, and the pipe fitting joint does not need to be replaced.

The first through hole is provided with a cylinder, and the external thread part is arranged on the outer side of the cylinder, so that the communication strength with the high-pressure oil pipe 1 is enhanced; correspondingly, a movable nut is arranged at the second through hole, and an internal thread part is arranged on the inner wall of the movable nut and is used for being connected with the oil sprayer 8, so that the connecting body 2 can be conveniently disassembled and assembled.

In some embodiments, the third port includes an oil drainage channel 10 and an adjusting channel 12, where the oil drainage channel 10 is communicated between the first channel 9 and the adjusting main channel, and an oil drainage hole 13 is provided on a side wall of the adjusting channel 12, and the oil drainage hole 13 communicates the adjusting channel 12 with the oil delivery pipe 6 and communicates the adjusting channel 12 with the inside and the outside, so that the second channel is sequentially formed in the oil drainage channel 10, the adjusting channel 12, and the oil drainage hole 13.

Correspondingly, the adjusting part is including adjusting pole 4, this adjust pole 4 and the lateral wall threaded connection who adjusts passageway 12, so that adjust pole 4 can be with adjusting the shutoff of passageway 12, and can follow the extending direction displacement of adjusting passageway 12 through self rotation, and the one end of adjusting pole 4 is provided with the shutoff portion, the other end is provided with rotating part 15, wherein shutoff portion and draining passageway 10 adaptation, and can seal draining passageway 10, in order to realize closing of second passageway, rotating part 15 is used for driving and adjusts pole 4 and rotates, specifically, rotating part 15 can set up to outer hexagon nut, in order to facilitate the use spanner rotating.

Like this, through rotation adjusting rod 4, can be so that the shutoff portion along being close to or keeping away from the direction displacement of draining passageway 10, when the shutoff portion offseted with draining passageway 10, the second passageway was in the closed condition, and engine normal operating, when the shutoff portion kept away from draining passageway 10, regulation passageway 12 and draining hole 13 switched on, and the second passageway is in the open condition, can carry out the shut down test. Convenient operation and stable and reliable structure.

Here, the diameter of the oil discharge passage 10 is smaller than that of the regulation passage 12, and the strength of the screwing can be improved.

In order to improve the leakproofness of shutoff portion and draining passageway 10, the shutoff portion sets up to conical head 14, and this conical head 14 reduces along the direction cross-section that is close to draining passageway 10 gradually, and correspondingly, draining passageway 10 is kept away from the one end of first passageway 9 and is provided with tapered hole 11, and tapered hole 11 and the conical head 14 conical surface cooperation, for conical head 14 embedding, form the conical surface like this and seal, are favorable to promoting sealing strength, prevent that the fuel from leaking.

Specifically, the conical body and the conical hole 11 are both provided in a conical structure, which contributes to the enhancement of the sealing strength. Further, the adjustment lever 4 may be provided as an adjustment screw. Convenient material taking and processing steps reduction.

In order to improve the tightness between the adjusting rod 4 and the adjusting channel 12, a sealing structure is arranged in the adjusting rod 4 and the adjusting channel 12, the sealing structure comprises a smooth surface and a sealing ring 3, one of the smooth surface and the sealing ring 3 is arranged on the outer wall of the adjusting rod 4, the other one of the smooth surface and the sealing ring 3 is arranged on the inner wall of the adjusting channel 12, and the fuel oil can be blocked in the adjusting channel 12 through the sliding sealing of the sealing ring 3 and the smooth surface. Here, the inner wall of the adjusting channel 12 is provided with a smooth surface, and the sealing ring 3 is correspondingly provided on the adjusting rod 4, so that the installation of the sealing ring 3 is facilitated.

Specifically, a seal groove 16 is provided on the adjustment lever 4, and an O-ring, i.e., a seal ring 3, is provided in the seal groove 16.

Wherein, adjusting pole 4 and forming sealed section and external screw thread section between shutoff portion and rotating part 15, sealed section is close to rotating part 15, and the external screw thread section is close to the shutoff portion, like this, carries out one through the spiro union earlier and seals, forms two through seal structure and seal, and the fuel can strengthen the stable lubricating property of spiro union simultaneously.

Correspondingly, a smooth hole section and an internal thread section with smooth surfaces are formed in the adjusting channel 12, the internal thread section is located between the smooth hole section and the oil drainage channel 10, the smooth hole section is matched with the sealing section, and the internal thread section is matched with the external thread.

In some preferred schemes, the oil drainage hole 13 department intercommunication has the welding sleeve 5, and the welding sleeve 5 can be embedded or external in oil drainage hole 13 department, specifically can weld for with defeated oil pipe 6 intercommunication, through exposed welding sleeve 5 like this for defeated oil pipe 6's connection is convenient and reliable more, easy dismounting.

Wherein, defeated oil pipe 6 sets up to the hose, and the adjustment position of conveniently buckling has further promoted the suitability.

The present engine cylinder deactivation device will be specifically described below with reference to the above embodiments.

As shown in fig. 1 and 2, an engine cylinder deactivation device comprises a high-pressure oil pipe 1, a tee joint body, an O-shaped ring, an adjusting screw, a welding sleeve 5, a hose, an oil tank 7 and an oil injector 8. The tee body is arranged between the high-pressure oil pipe 1 and the oil injector 8, and the conical surface at the bottom of the adjusting screw is matched with the conical surface of the tee body by screwing the adjusting screw, so that one channel of the tee body is blocked, and the oil-cut and cylinder-stop device is in a closed state. High-pressure fuel sprayed by the fuel injection pump enters the tee joint body through the high-pressure fuel pipe 1, the fuel enters the fuel injector 8 through the straight-through pipeline in the tee joint body, when the fuel pressure in the fuel injector 8 reaches the opening pressure of the fuel injector 8, the fuel injector 8 starts to inject fuel, and each cylinder of the diesel engine normally works.

During the cylinder deactivation test, oil and cylinder deactivation operation needs to be carried out on a certain cylinder. And loosening the adjusting screw to enable the conical bottom of the adjusting screw to leave the conical surface of the tee body, so that the tee body is in an open state. The fuel oil in the high-pressure oil pipe 1 enters the tee body, passes through a side through pipeline of the tee body, enters the oil tank 7 through the welding sleeve 5 and a hose connected with the welding sleeve 5, and the spongy cushion is placed at the bottom of the oil tank 7 to prevent the fuel oil from splashing everywhere. An O-shaped ring is arranged on the adjusting screw to seal fuel oil and prevent the fuel oil from overflowing from the port. And in the channel where the other part of the tee joint body is connected with the oil injector 8, because high-pressure fuel oil is decompressed through a side through pipeline, opening pressure cannot be built in the oil injector 8, so that the oil injector 8 cannot inject oil, and the oil cut and the cylinder stop of the cylinder are realized.

As shown in fig. 3 and 4, the tee body is divided into three parts. The first part is a cylinder and is connected with the high-pressure oil pipe 1 through external threads. The second part is a movable nut which is connected with the oil sprayer 8 through internal threads, and the movable nut is convenient for dismounting the tee body. The third part is a cylinder, the upper part of the middle hole is a unthreaded hole which is matched and sealed with an O-shaped ring and used for sealing fuel oil and preventing the fuel oil from leaking. The middle part is a threaded hole for installing an adjusting screw. The lower part is an oil drainage channel 10, and the hollow opening is a conical surface which is matched with the bottom conical surface of the adjusting screw to seal the conical surface. An oil drainage hole 13 is formed in the side face of the third portion, the welding sleeve 5 is welded at the oil drainage hole 13, the other end of the welding sleeve 5 is connected with a hose, and fuel oil enters the oil tank 7 through the welding sleeve 5 and the hose.

As shown in fig. 5 and 6, the adjusting screw is a special piece, the upper part of the adjusting screw is a smooth curved surface, and an O-ring groove is formed for installing an O-ring and sealing fuel. The middle part is an external thread and the lemon is inserted into the tee body. The bottom of the adjusting screw is a conical body which is matched with the conical surface of the oil drainage hole 13 of the tee body to seal fuel oil.

The application also provides an engine cylinder deactivation method, which is based on the engine cylinder deactivation device and comprises the following steps:

connecting the connecting body 2 between the high-pressure oil pipe 1 and the oil injector 8 so that the first channel 9 conducts the high-pressure oil pipe 1 and the oil injector 8;

communicating the oil delivery pipe 6 with the second passage;

the adjusting and regulating assembly conducts the second channel so that the oil in the first channel 9 is guided out by the second channel and the oil conveying pipe 6.

When the engine works, the connecting body 2 is arranged between the high-pressure oil pipe 1 and the oil injector 8, the high-pressure oil pipe 1 and the oil injector 8 are conducted through the first channel 9, the adjusting assembly is kept in the first state, the second channel is closed, high-pressure fuel oil sprayed by the oil injection pump enters the connecting body 2 through the high-pressure oil pipe 1, the fuel oil enters the oil injector 8 through the first channel 9, when the pressure of the fuel oil in the oil injector 8 reaches the opening pressure of the oil injector 8, the oil injector 8 starts to inject oil, and each cylinder of the engine works normally. During a cylinder stopping test, the oil cut and cylinder stop operation of a certain cylinder is needed, the adjusting assembly is adjusted to be in a second state, a second channel is opened, fuel oil in the high-pressure oil pipe 1 enters the connector 2, flows into the oil conveying pipe 6 through the first channel 9 and the second channel, and is guided out of the engine through the oil conveying pipe 6, and due to the fact that the high-pressure fuel oil is decompressed through the connector 2, opening pressure cannot be built in the oil sprayer 8, oil cannot be sprayed by the oil sprayer 8, and therefore the oil cut and cylinder stop of the cylinder are achieved.

So set up, install connector 2 additional between high pressure fuel pipe 1 and sprayer 8, both can accomplish the realization of stopping the jar under the state of not shutting down, can lead out the fuel that the fuel cut off produced outside the engine again, keep away from the high temperature region, avoid the conflagration to take place, be favorable to promoting the fail safe nature of stopping the jar. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the engine cylinder deactivation device, and therefore, the description is omitted here.

It should be noted that the terms "first," "second," and the like, as used herein, are not intended to limit the specific order, but merely to distinguish one element or function from another. The stated "horizontal", "vertical", "up", "down", "left" and "right" are the ones that refer to when the engine cylinder deactivation device is in the natural state of putting.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the application comprise basic schemes of the schemes, are independent of each other and are not restricted to each other, but can be combined with each other under the condition of no conflict, so that multiple effects are achieved together.

While embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.