CN221002961U

CN221002961U - Injector, engine and vehicle

Info

Publication number: CN221002961U
Application number: CN202322917111.6U
Authority: CN
Inventors: 张志永; 李贤坤; 常进才; 孙剑; 赖海鹏
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-10-30
Filing date: 2023-10-30
Publication date: 2024-05-24
Anticipated expiration: 2033-10-30

Abstract

The utility model discloses an injector, an engine and a vehicle, wherein the injector comprises: the injector comprises an injector body, a lubricant inlet and a lubricant outlet, wherein a mixing cavity is formed in the injector body, and the injector body is provided with a hydrogen inlet, a lubricant inlet and a nozzle which are respectively communicated with the mixing cavity; the first control valve is arranged on the injector main body and used for controlling the on-off of the hydrogen inlet; and the second control valve is arranged on the injector main body and used for controlling the on-off of the nozzle. According to the ejector disclosed by the embodiment of the utility model, the hydrogen and the lubricating oil are mixed in the mixing cavity by arranging the hydrogen inlet and the lubricating oil inlet which are communicated with the mixing cavity, so that the hydrogen has a lubricating effect, the ejector can perform self-lubrication, the problems of leakage and the like caused by abrasion of a nozzle are avoided, the service life of the ejector can be prolonged, the use effect is better, and the application range is wider.

Description

Injector, engine and vehicle

Technical Field

The utility model relates to the technical field of automobile manufacturing, in particular to an ejector, an engine and a vehicle.

Background

Hydrogen fuel is used on conventional internal combustion engines, and industry attention is paid gradually. Green hydrogen is used as fuel, and the fuel is directly used for an internal combustion engine, so that zero carbon emission can be realized, and the fuel is one of important paths for achieving carbon peak carbon neutralization. Compared with a fuel cell, the hydrogen internal combustion engine has outstanding cost advantages, can share a mature industrial chain of the traditional gasoline and diesel engine, can fully utilize research and development, manufacturing and supply chain resources of the traditional internal combustion engine industry, quickly realize mass production, finally maintain the cost similar to that of the traditional internal combustion engine, and has the advantages incomparable with other new energy technologies. Because port injection of hydrogen is prone to abnormal combustion such as flashback, in the future, each host factory and nozzle provider will tend to employ direct injection hydrogen nozzles at medium and low pressures (25 bar-60 bar). However, since hydrogen is a gaseous fuel, the hydrogen has no lubricating ability, long-term operation can cause nozzle abrasion, cause problems such as hydrogen leakage, and even quality problems such as long-term injection of an injector can occur, and there is room for improvement.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the ejector which can perform self-lubrication, avoid the problems of nozzle abrasion and the like, prevent hydrogen leakage and prolong the service life of the ejector.

An ejector according to an embodiment of the present utility model includes: the injector comprises an injector body, a lubricant inlet and a lubricant outlet, wherein a mixing cavity is formed in the injector body, and the injector body is provided with a hydrogen inlet, a lubricant inlet and a nozzle which are respectively communicated with the mixing cavity; the first control valve is arranged on the injector main body and used for controlling the on-off of the lubricating oil inlet; and the second control valve is arranged on the injector main body and used for controlling the on-off of the nozzle.

According to the ejector disclosed by the embodiment of the utility model, the hydrogen inlet and the lubricating oil inlet which are communicated with the mixing cavity are arranged, so that the hydrogen and the lubricating oil are mixed in the mixing cavity, the hydrogen has a lubricating effect, the ejector can perform self-lubrication, the problems of leakage and the like caused by abrasion of a nozzle are avoided, the service life of the ejector can be prolonged, the use effect is better, and the application range is wider.

According to some embodiments of the utility model, the injector body has a first side wall and a second side wall which are distributed on two sides of the mixing chamber, the hydrogen inlet and the lubricant inlet are both opened on the first side wall, and the nozzle is opened on the second side wall.

According to some embodiments of the utility model, the first control valve is located outside the mixing chamber and mounted outside the first sidewall;

and/or the second control valve is positioned in the mixing cavity and is mounted on the second side wall.

According to some embodiments of the utility model, the hydrogen inlet has a diameter D and satisfies: d is more than or equal to 2mm and less than or equal to 3mm.

According to some embodiments of the utility model, the ratio of the cross-sectional area of the hydrogen inlet to the total cross-sectional area of the nozzle holes of the first control valve is a, and satisfies: a is more than or equal to 5 and less than or equal to 10.

According to some embodiments of the utility model, the spacing between the hydrogen inlet and the nozzle is L, and satisfies: d is less than or equal to 5mm.

The utility model also provides an engine.

The engine comprises a cylinder, a hydrogen pipeline, a lubricating oil pipeline, an air pipeline and an injector of any one of the above, wherein the injector is arranged on a cylinder head of the cylinder, the hydrogen pipeline is communicated with the hydrogen inlet, the lubricating oil pipeline is communicated with the lubricating oil inlet, and the air pipeline and the nozzle are respectively communicated with a combustion chamber of the cylinder.

According to the engine of some embodiments of the present utility model, the hydrogen pipeline is used for sequentially connecting a hydrogen tank, a hydrogen switch valve and the injector, and a pressure reducing valve and/or a pressure stabilizing cavity are arranged between the hydrogen tank and the hydrogen switch valve, and the hydrogen switch valve and the first control valve are both set to be opened before the second control valve;

and/or the lubricating oil pipeline is used for sequentially connecting an oil tank, an oil pump, an oil pipe, a low-pressure fuel common rail pipe and the lubricating oil inlet of the engine.

According to an engine of some embodiments of the utility model, the oil supply pressure of the lubrication oil line is set to be smaller than the hydrogen supply pressure in the hydrogen line.

The utility model further provides a vehicle.

According to the vehicle of the embodiment of the utility model, the engine of any one of the above is provided.

The engine, the vehicle and the injector described above have the same advantages over the prior art and are not described in detail here.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of an ejector according to an embodiment of the present utility model;

Fig. 2 is a schematic structural view of a hydrogen pipeline according to an embodiment of the present utility model.

Reference numerals:

The flow of the air from the injector 100,

The injector comprises an injector body 1, a mixing chamber 11, a hydrogen inlet 12, a lubricating oil inlet 13, a nozzle 14, a first control valve 15, a second control valve 16, a first side wall 17, a second side wall 18, a hydrogen pipeline 2, a hydrogen tank 23, a hydrogen switch valve 24, a pressure reducing valve 25 and a pressure stabilizing chamber 26.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

If not specified, the front-rear direction in the application is the longitudinal direction of the vehicle, namely the X direction; the left-right direction is the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

The following describes the injector 100 according to the embodiment of the present utility model with reference to fig. 1 to 2, which can perform self-lubrication, avoid problems such as abrasion of the nozzle 14, prevent leakage of hydrogen gas, and extend the service life of the injector 100.

As shown in fig. 1 to 2, an injector 100 according to an embodiment of the present utility model includes: the injector body 1, the first control valve 15, and the second control valve 16.

A mixing chamber 11 is formed in the injector body 1, and the injector body 1 is provided with a hydrogen inlet 12, a lubricating oil inlet 13 and a nozzle 14 which are respectively communicated with the mixing chamber 11, a first control valve 15 is mounted on the injector body 1 and used for controlling the on-off of the lubricating oil inlet 13, and a second control valve 16 is mounted on the injector body 1 and used for controlling the on-off of the nozzle 14.

Specifically, the injector 100 is provided with an injector body 1, the injector body 1 is used for controlling the pressure and flow of hydrogen introduced into an engine, a mixing cavity 11 is formed in the injector body 1, the mixing cavity 11 is a hollow cavity, the injector body 1 is further provided with a hydrogen inlet 12, a lubricating oil inlet 13 and a nozzle 14, the hydrogen inlet 12, the lubricating oil inlet 13 and the nozzle 14 are all communicated with the mixing cavity 11, the other end of the nozzle 14 is connected with a combustion chamber of the engine, hydrogen can be introduced into the mixing cavity 11 through the hydrogen inlet 12, lubricating oil can be introduced into the mixing cavity 11 through the lubricating oil inlet 13, hydrogen and lubricating oil can be mixed in the mixing cavity 11 to obtain a mixed gas of lubricating oil and hydrogen, the mixed gas can be sprayed into the combustion chamber of the engine through the nozzle 14 for the engine to operate, and in practical use, gasoline, diesel oil or other fuels with self-lubricating capability can be adopted to replace the lubricating oil.

The lubricating oil injected through the lubricating oil inlet 13 can enter the mixing cavity 11 at a high speed to be mixed with the hydrogen introduced through the hydrogen inlet 12, and the lubricating oil can be rapidly atomized and evaporated by utilizing the gas entrainment effect, so that a homogeneous lubricating oil hydrogen-doped mixed gas can be formed in the mixing cavity 11, and the combustion and emission of the engine can be improved.

Further, the injector 100 is further provided with a first control valve 15 and a second control valve 16, the first control valve 15 is arranged at the position of the injector body 1 close to the lubricant inlet 13, the first control valve 15 can control the on-off of the lubricant inlet 13, and further can control the communication state of the lubricant inlet 13 and the mixing cavity 11 so as to control the lubricant amount entering the mixing cavity 11, the second control valve 16 is arranged at the position of the injector body 1 close to the nozzle 14, and the second control valve 16 can control the on-off of the nozzle 14, and further can control the communication state of the mixing cavity 11 and the nozzle 14 so as to control the pressure and the flow rate of the mixed gas in the mixing cavity 11 entering the combustion chamber of the engine, and can flexibly control the proportion of the lubricant doped in the hydrogen by controlling the opening time of the first control valve 15 according to the service life requirement of the injector 100 during product development, so as to control the lubrication effect of the hydrogen.

According to the ejector 100 of the embodiment of the utility model, the hydrogen inlet 12 and the lubricating oil inlet 13 which are communicated with the mixing cavity 11 are arranged, so that the hydrogen and the lubricating oil are mixed in the mixing cavity 11, further the hydrogen has a lubricating effect, the ejector 100 can perform self-lubrication, the problems of leakage and the like caused by abrasion of the nozzle 14 are avoided, the service life of the ejector 100 can be prolonged, the use effect is better, and the application range is wider.

In some embodiments, the injector body 1 has a first side wall 17 and a second side wall 18 that are oppositely disposed on two sides of the mixing chamber 11, the hydrogen inlet 12 and the lubricant inlet 13 are both disposed on the first side wall 17, and the nozzle 14 is disposed on the second side wall 18.

Specifically, as shown in fig. 1, the injector body 1 is provided with a mixing chamber 11, the mixing chamber 11 can be filled with hydrogen and lubricating oil, the hydrogen and the lubricating oil can be mixed in the mixing chamber 11 so as to be sprayed into a combustion chamber of an engine through a nozzle 14, two sides of the mixing chamber 11 are provided with a first side wall 17 and a second side wall 18, the first side wall 17 and the second side wall 18 are oppositely arranged, a hydrogen inlet 12 and a lubricating oil inlet 13 are both arranged on the first side wall 17, the hydrogen inlet 12 is used for filling hydrogen into the mixing chamber 11, the lubricating oil inlet 13 is used for filling lubricating oil into the mixing chamber 11, and the hydrogen inlet 12 and the lubricating oil inlet 13 are both arranged on the first side wall 17 so that the hydrogen and the lubricating oil can be mixed just when entering the mixing chamber 11, so that the mixing is more uniform.

Further, the nozzle 14 is disposed on the second side wall 18, the nozzle 14 is used for communicating with a combustion chamber of an engine, the mixed gas can be introduced into the combustion chamber of the engine through the nozzle 14, the first side wall 17 and the second side wall 18 are disposed opposite to each other, that is, the positions of the hydrogen inlet 12 and the lubricant inlet 13 are opposite to the positions of the nozzle 14, so that the distance between the nozzle 14 and the hydrogen inlet 12 and the lubricant inlet 13 is relatively long, and further, the hydrogen and the lubricant can be sufficiently mixed and then sprayed out through the nozzle 14, so that the mixture is more sufficient.

In some embodiments, the first control valve 15 is located outside the mixing chamber 11 and mounted outside the first sidewall 17; and/or the second control valve 16 is located inside the mixing chamber 11 and mounted on the second side wall 18, i.e. the first control valve 15 is located outside the mixing chamber 11 and mounted on the outside of the first side wall 17, while the second control valve 16 is located inside the mixing chamber 11 and mounted on the second side wall 18, alternatively only the first control valve 15 is located outside the mixing chamber 11 and mounted on the outside of the first side wall 17, or only the second control valve 16 is located inside the mixing chamber 11 and mounted on the second side wall 18.

Specifically, as shown in fig. 1, in the present embodiment, the first control valve 15 is located outside the mixing chamber 11 and is mounted on the outer side of the first side wall 17, and the second control valve 16 is located in the mixing chamber 11 and is mounted on the second side wall 18, the first control valve 15 is used for controlling the on-off state of the lubricant inlet 13, the first control valve 15 is disposed on the first side wall 17, and the first control valve 15 is disposed outside the mixing chamber 11, so that the first control valve 15 can control the on-off state of the lubricant inlet 13 outside the mixing chamber 11, the second control valve 16 is used for controlling the on-off state of the nozzle 14, the second control valve 16 is disposed on the second side wall 18, and the second control valve 16 is disposed in the mixing chamber 11, so that the second control valve 16 can control the on-off state of the nozzle 14 in the mixing chamber 11, and the gas entering the nozzle 14 from the mixing chamber 11 is the mixed gas, thereby ensuring the lubrication effect of the mixed gas passing through the nozzle 14, and prolonging the service life of the nozzle 14.

In some embodiments, the hydrogen inlet 12 has a diameter D, and satisfies: d is more than or equal to 2mm and less than or equal to 3mm.

Specifically, the diameter D of the hydrogen inlet 12 is set to 2 mm.ltoreq.D.ltoreq.3 mm, that is, the diameter D of the hydrogen inlet 12 may be set to 2mm, 2.5mm, 3mm, etc., the diameter D of the hydrogen inlet 12 is set to satisfy: 2mm is less than or equal to D is less than or equal to 3mm, can make hydrogen inlet 12 less, and hydrogen inlet 12 communicates with the mixing chamber 11 of sprayer body, and the sprayer 100 is less, can make the whole volume of sprayer 100 less, and sprayer 100 communicates with the combustion chamber of engine through nozzle 14, and the sprayer 100 is small and is convenient for sprayer 100 to arrange on the engine, practices thrift the setting space.

In some embodiments, the ratio of the cross-sectional area of the hydrogen inlet 12 to the total cross-sectional area of the nozzle holes of the first control valve 15 is a, and satisfies: a is more than or equal to 5 and less than or equal to 10.

Specifically, the ratio A of the sectional area of the hydrogen inlet 12 to the total sectional area of the nozzle holes of the first control valve 15 is set to be 5.ltoreq.A.ltoreq.10, that is, the ratio A of the sectional area of the hydrogen inlet 12 to the total sectional area of the nozzle holes of the first control valve 15 may be set to be 5, 8, 10, etc., the ratio A of the sectional area of the hydrogen inlet 12 to the total sectional area of the nozzle holes of the first control valve 15 is set to satisfy: the sectional area of the hydrogen inlet 12 is set to be larger than the total sectional area of the spray holes of the first control valve 15, so that the amount of hydrogen introduced into the hydrogen inlet 12 is larger than the amount of lubricating oil introduced into the lubricating oil inlet 13, the density of the hydrogen is lower than that of liquid lubricating oil, the introduced amount of the hydrogen is controlled to be larger than that of the lubricating oil, the mixing effect of the hydrogen and the lubricating oil is better, and the lubricating effect of the mixed gas is improved.

In some embodiments, the spacing between the hydrogen inlet 12 and the nozzle 14 is L, and satisfies: d is less than or equal to 5mm.

Specifically, the distance L between the hydrogen inlet 12 and the nozzle 14 is set to D.ltoreq.5 mm, that is, the distance L between the hydrogen inlet 12 and the nozzle 14 may be set to 3mm, 4mm, 5mm, etc., the distance L between the hydrogen inlet 12 and the nozzle 14 is set to satisfy: d is less than or equal to 5mm, namely the interval between the hydrogen inlet 12 and the nozzle 14 is smaller, lubricating oil sprayed through the lubricating oil inlet 13 can enter the mixing cavity 11 at a high speed to be mixed with hydrogen introduced through the hydrogen inlet 12, and the lubricating oil can be rapidly atomized and evaporated by utilizing the gas entrainment effect, so that homogeneous lubricating oil hydrogen-doped mixed gas can be formed in the mixing cavity 11, the combustion and emission of an engine can be improved, the interval between the hydrogen inlet 12 and the nozzle 14 is smaller, the gas entrainment effect can be fully utilized, atomized lubricating oil can be fully mixed with hydrogen, and the combustion and emission effect of the engine can be improved.

The utility model also provides an engine.

The engine according to the embodiment of the utility model comprises a cylinder, a hydrogen pipe 2, a lubrication oil pipe, an air pipe and an injector 100 of any one of the above, wherein the injector 100 is arranged on the cylinder head of the cylinder, the hydrogen pipe 2 is communicated with a hydrogen inlet 12, the lubrication oil pipe is communicated with a lubrication oil inlet 13, and the air pipe and a nozzle 14 are respectively communicated with the combustion chamber of the cylinder.

Specifically, the engine is provided with a cylinder, a hydrogen pipeline 2, a lubricating oil pipeline, an air pipeline, an injector 100 and the like, the cylinder is provided with a cylinder cover, a combustion chamber and the like, the injector 100 is mounted on the cylinder cover of the cylinder, the hydrogen pipeline 2 is communicated with the hydrogen inlet 12, the lubricating oil pipeline is communicated with the lubricating oil inlet 13 so as to introduce hydrogen and lubricating oil into the mixing cavity 11 of the injector 100, wherein the lubricating oil can be oil with lubricating property from the outside of the engine or engine oil extracted from an oil sump of the engine, the nozzle 14 of the injector 100 is communicated with the combustion chamber of the cylinder, the mixed gas in the mixing cavity 11 of the injector 100 can be injected into the combustion chamber of the cylinder through the nozzle 14, self-lubrication of the injector 100 can be realized, and meanwhile, the air pipeline is also communicated with the combustion chamber of the cylinder, so that the hydrogen and the air can be introduced into the combustion chamber of the cylinder, and the air can react in the combustion chamber so as to provide power for the engine.

According to the engine provided by the embodiment of the utility model, the hydrogen inlet 12 and the lubricating oil inlet 13 which are communicated with the mixing cavity 11 are arranged in the injector 100, so that the hydrogen and the lubricating oil are mixed in the mixing cavity 11, further the hydrogen has a lubricating effect, the injector 100 can perform self-lubrication, the problems of leakage and the like caused by abrasion of the nozzle 14 are avoided, the service life of the injector 100 can be prolonged, the use effect is better, and the application range is wider.

In some embodiments, the hydrogen pipeline 2 is used for sequentially connecting the hydrogen tank 23, the hydrogen switch valve 24 and the injector 100, and a pressure reducing valve 25 and/or a pressure stabilizing cavity 26 are arranged between the hydrogen tank 23 and the hydrogen switch valve 24, that is, the pressure reducing valve 25 and the pressure stabilizing cavity 26 can be arranged between the hydrogen tank 23 and the hydrogen switch valve 24, and only the pressure reducing valve 25 or only the pressure stabilizing cavity 26 can be arranged, and the hydrogen switch valve 24 and the first control valve 15 are arranged to be opened before the second control valve 16; and/or the lubrication oil pipeline is used for connecting an oil tank, an oil pump, an oil pipe, a low-pressure fuel common rail pipe and a lubrication oil inlet 13 of the engine in sequence.

Specifically, as shown in fig. 2, the hydrogen pipeline 2 is connected with a hydrogen tank 23, a hydrogen switch valve 24 and an injector 100, the hydrogen tank 23 is used for storing hydrogen, when the engine is running, the hydrogen tank 23 can convey hydrogen required by reaction to a cylinder of the engine through the hydrogen pipeline 2, the hydrogen switch valve 24 can control the communication between the hydrogen tank 23 and the cylinder, and further control the running state of the engine, in this embodiment, a pressure reducing valve 25 and a pressure stabilizing cavity 26 are simultaneously arranged between the hydrogen tank 23 and the hydrogen switch valve 24, and the pressure stabilizing cavity 26 can reduce the pressure of hydrogen in the hydrogen pipeline 2, so that the pressure of hydrogen is lower when the hydrogen is fed into the cylinder from the hydrogen pipeline 2, and the problems of leakage and the like caused by overhigh pressure are avoided.

Further, the pressure reducing valve 25 is located at the upstream of the pressure stabilizing cavity 26, the pressure reducing valve 25 can adjust the pressure of hydrogen in the hydrogen pipeline 2, the hydrogen tank 23 is communicated with the hydrogen pipeline 2, the hydrogen in the hydrogen tank 23 is high-pressure hydrogen, the high-pressure hydrogen entering the hydrogen pipeline 2 through the inlet end is required to pass through the pressure reducing valve 25 in the conveying process, the pressure reducing valve 25 can reduce the pressure of the high-pressure hydrogen to the required pressure, and then the high-pressure hydrogen enters the hydrogen pipeline 2 for conveying, the pressure reducing valve 25 is located at the upstream of the pressure stabilizing cavity 26, namely, the hydrogen after being depressurized through the pressure reducing valve 25 can be introduced into the pressure stabilizing cavity 26 through an air inlet pipeline, and after the pressure of the hydrogen is stabilized through the pressure stabilizing cavity 26, the hydrogen enters the hydrogen pipeline 2 for conveying, so that the state of the hydrogen entering a cylinder is stable, the running stability of the engine is ensured, and the service life of the engine is prolonged.

Meanwhile, the hydrogen switch valve 24 and the first control valve 15 are both set to be opened before the second control valve 16 is opened, the mixing process of hydrogen and lubricating oil in the mixing cavity 11 is completed before the second control valve 16 is opened, so that the hydrogen switch valve 24 and the first control valve 15 are both set to be opened before the second control valve 16, atomized lubricating oil in the mixing cavity 11 can be fully mixed with hydrogen, the difference between the proportion of lubricating oil and hydrogen sprayed into a combustion chamber is avoided, in actual use, the advance time can be set to be more than 180 DEG CA engine crankshaft rotation angle, and simultaneously, a lubricating oil pipeline can be sequentially connected with an oil tank, an oil pump, an oil pipe, a low-pressure fuel common rail pipe and a lubricating oil inlet 13 of the engine, so that the lubricating oil pipeline has universality and the arrangement cost is saved.

In some embodiments, the oil supply pressure of the lubrication oil line is set to be smaller than the hydrogen supply pressure in the hydrogen line 2.

Specifically, the oil supply pressure of the lubrication oil pipeline is set to be smaller than the hydrogen supply pressure in the hydrogen pipeline 2, in actual use, the oil supply pressure of the lubrication oil pipeline can be set to be smaller than 10bar, the hydrogen supply pressure in the hydrogen pipeline 2 can be set to be larger than or equal to 25bar and smaller than 60bar, namely, the high-pressure pump, the high-pressure nozzle 14, the high-pressure oil rail and the like of the direct injection engine are not needed, the manufacturing cost of the engine is reduced, and the low-pressure hydrogen can ensure that the hydrogen in the hydrogen tank 23 is fully utilized, so that energy is saved.

The utility model further provides a vehicle.

According to the vehicle provided by the embodiment of the utility model, the engine is arranged on the vehicle, and the hydrogen inlet 12 and the lubricating oil inlet 13 which are communicated with the mixing cavity 11 are arranged on the injector 100, so that the hydrogen and the lubricating oil are mixed in the mixing cavity 11, further the hydrogen has a lubricating effect, the injector 100 can perform self-lubrication, the problems of leakage and the like caused by abrasion of the nozzle 14 are avoided, the service life of the injector 100 can be prolonged, the use effect is better, and the application range is wider.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. An injector, comprising:

The injector comprises an injector body, a lubricant inlet and a lubricant outlet, wherein a mixing cavity is formed in the injector body, and the injector body is provided with a hydrogen inlet, a lubricant inlet and a nozzle which are respectively communicated with the mixing cavity;

The first control valve is arranged on the injector main body and used for controlling the on-off of the lubricating oil inlet;

And the second control valve is arranged on the injector main body and used for controlling the on-off of the nozzle.

2. The injector of claim 1, wherein the injector body has a first sidewall and a second sidewall that are oppositely disposed on opposite sides of the mixing chamber, the hydrogen inlet and the lube inlet are both open on the first sidewall, and the nozzle is open on the second sidewall.

3. The injector of claim 2, wherein the first control valve is located outside the mixing chamber and mounted outside the first sidewall;

4. The injector of claim 1, wherein the hydrogen inlet has a diameter D and satisfies: d is more than or equal to 2mm and less than or equal to 3mm.

5. The injector of claim 1, wherein the ratio of the cross-sectional area of the hydrogen gas inlet to the total cross-sectional area of the orifices of the first control valve is a and satisfies: a is more than or equal to 5 and less than or equal to 10.

6. The injector of claim 1, wherein the hydrogen inlet is spaced apart from the nozzle by a distance L and satisfies: d is less than or equal to 5mm.

7. An engine comprising a cylinder, a hydrogen line, a lubrication line, an air line and the injector of any one of claims 1-6, the injector being mounted to a cylinder head of the cylinder, the hydrogen line being in communication with the hydrogen inlet, the lubrication line being in communication with the lubrication inlet, the air line and the nozzle being in communication with a combustion chamber of the cylinder, respectively.

8. The engine according to claim 7, wherein the hydrogen pipeline is used for sequentially connecting a hydrogen tank, a hydrogen switching valve and the injector, a pressure reducing valve and/or a pressure stabilizing cavity is arranged between the hydrogen tank and the hydrogen switching valve, and the hydrogen switching valve and the first control valve are opened before the second control valve;

9. The engine of claim 7, wherein an oil supply pressure of the lubrication oil line is set to be smaller than a hydrogen supply pressure in the hydrogen line.

10. A vehicle, characterized in that an engine as claimed in any one of claims 7-9 is provided.