Engine and vehicle

Abstract

The invention discloses an engine and a vehicle, the engine comprises a cylinder, the cylinder comprises a cylinder body and a cylinder cover, a movable piston is arranged in the cylinder body, and a combustion chamber is formed between the piston and the cylinder cover; the hydrogen supply pipeline is communicated with the combustion chamber so as to supply hydrogen to the combustion chamber, and the air pipeline is communicated with the combustion chamber so as to supply air to the combustion chamber; the water supply pipeline comprises a water tank and a water sprayer communicated with the water tank, the water sprayer is installed on the air cylinder cover, the water sprayer is provided with a first water spraying beam and a second water spraying beam, and the first water spraying beam is arranged towards the piston and used for spraying water to the piston; a certain included angle is formed between the second water spraying beam and the first water spraying beam and used for spraying water into the combustion chamber. According to the engine, the temperature in the cylinder is reduced by spraying water into the cylinder, preignition and abnormal combustion of the engine are restrained, piston heat transfer is reduced, heat efficiency is improved, nitrogen oxide emission is reduced, and the problem of engine oil dilution is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to an engine and a vehicle having the engine. Background Art

[0002] With the proposal of the national dual-carbon strategy and the release of the hydrogen energy industry plan, the use of hydrogen fuel in conventional internal combustion engines has gradually received attention from the industry. Using green hydrogen as fuel and directly using it in internal combustion engines can achieve zero carbon emissions, which is one of the important paths to achieve carbon peak and carbon neutrality. Hydrogen fuel has a low flash point and a fast combustion rate. Due to the rapid heat release rate during hydrogen combustion, the instantaneous temperature during combustion is high, resulting in large heat transfer losses in the engine and high nitrogen oxide emissions. Hydrogen engines are also prone to problems such as pre-ignition and detonation. Among them, water can be sprayed into the mixture to utilize the evaporation of water to absorb heat and reduce the temperature in the cylinder, thereby suppressing pre-ignition. However, the water spraying process can easily cause the water sprayed into the cylinder to move with the piston, causing the risk of oil dilution and emulsification, and there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an engine, which sprays water into the cylinder of the engine by arranging a water sprayer to reduce the temperature in the cylinder, inhibit the engine's premature combustion and abnormal combustion such as knock, and can reduce piston heat transfer, improve the engine's thermal efficiency, and reduce nitrogen oxide emissions.

[0004] According to an embodiment of the present invention, the engine comprises: a cylinder, wherein the cylinder comprises a cylinder body and a cylinder head, wherein a movable piston is arranged in the cylinder body, and a combustion chamber is formed between the piston and the cylinder head; a hydrogen supply pipeline and an air pipeline, wherein the hydrogen supply pipeline is connected with the combustion chamber for supplying hydrogen to the combustion chamber, and the air pipeline is connected with the combustion chamber for supplying air to the combustion chamber; a water supply pipeline, wherein the water supply pipeline comprises a water tank and a water sprayer connected with the water tank, wherein the water sprayer is installed on the cylinder head, and wherein the water sprayer is provided with a first water spraying jet and a second water spraying jet, wherein the first water spraying jet is configured to be arranged toward the piston and to spray water to the piston, and wherein the second water spraying jet forms a certain angle with the first water spraying jet and is used to spray water into the combustion chamber.

[0005] According to the engine of the embodiment of the present invention, a water sprayer is arranged at the engine cylinder head to spray water into the cylinder, thereby reducing the temperature in the cylinder, inhibiting engine pre-ignition and abnormal combustion such as knocking, reducing piston heat transfer, improving the thermal efficiency of the hydrogen engine, and reducing nitrogen oxide emissions. At the same time, the problem of oil dilution and emulsification caused by water spraying in the engine cylinder is solved.

[0006] In the engine according to some embodiments of the present invention, the first water spraying jet is configured to extend in an axial direction parallel to the cylinder, and an end of the first water spraying jet close to the piston is open for spraying water.

[0007] In an engine according to some embodiments of the present invention, the cylinder head includes a first area and a second area, the first area and the second area are located on both sides of the axis of the cylinder head, the water sprayer is arranged in the first area, and the second water spray jet is inclined relative to the first water spray jet in a direction close to the second area.

[0008] In an engine according to some embodiments of the present invention, an angle between the second water spray jet and the first water spray jet is greater than 30°.

[0009] In an engine according to some embodiments of the present invention, a diameter of the first water spraying water jet is greater than a diameter of the second water spraying water jet.

[0010] In the engine according to some embodiments of the present invention, the number of the second water spray jets is plural, and an angle is formed between two adjacent second water spray jets.

[0011] In the engine according to some embodiments of the present invention, the water sprayer is arranged through the cylinder head, and the angle between the axial direction of the water sprayer and the plane of the cylinder head is less than 45°.

[0012] In the engine according to some embodiments of the present invention, the distance between the water sprayer and the inner peripheral wall of the cylinder body is smaller than the distance between the water sprayer and the center of the cylinder head.

[0013] According to some embodiments of the present invention, the engine further includes a control module, the water sprinkler is electrically connected to the control module, and the control module is electrically connected to a control unit of the engine, and the control module is configured to control the water sprinkler to spray water when the engine is in the late compression stroke.

[0014] The present invention also provides a vehicle.

[0015] A vehicle according to an embodiment of the present invention is provided with the engine described in any one of the above embodiments.

[0016] The advantages of the vehicle and the above-mentioned engine over the prior art are the same and will not be repeated here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of an engine according to an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of a water injector for an engine according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] Engine 100,

[0023] Cylinder 1, cylinder block 11, cylinder head 12, first area 121, second area 122, piston 13, combustion chamber 14, hydrogen supply pipeline 2, hydrogen tank 21, pressure reducing valve 22, hydrogen injector 23, air pipeline 3, intake valve 31, water supply pipeline 4, water tank 41, water injector 42, first water spray jet 421, second water spray jet 422, water pump 43, exhaust pipeline 5, exhaust valve 51, spark plug 6. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0028] Reference below Figure 1-Figure 2 The engine 100 according to an embodiment of the present invention is described, in which a water sprayer 42 is provided at the cylinder head 12 for spraying water into the cylinder 1 to reduce the temperature in the cylinder and inhibit premature combustion and abnormal combustion of the engine. At the same time, the water sprayer 42 is provided with a first water spraying jet 421 and a second water spraying jet 422, which spray water toward the piston 13 and the combustion chamber 14 respectively, and reduce the heat transfer of the piston 13, thereby improving the thermal efficiency of the engine 100 and reducing the emission of nitrogen oxides.

[0029] like Figure 1-Figure 2 As shown, an engine 100 according to an embodiment of the present invention includes: a cylinder 1, a hydrogen supply pipeline 2, an air pipeline 3 and a water supply pipeline 4.

[0030] The cylinder 1 includes a cylinder body 11 and a cylinder head 12. A movable piston 13 is provided in the cylinder body 11. A combustion chamber 14 is formed between the piston 13 and the cylinder head 12. That is, the piston 13 is movably installed in the cylinder body 11 and moves up and down along the inner wall of the cylinder body 11. The space between the piston 13 and the cylinder head 12 forms a combustion chamber 14 for achieving combustion.

[0031] The hydrogen supply pipeline 2 is connected to the combustion chamber 14 for supplying hydrogen to the combustion chamber 14 , and the air pipeline 3 is connected to the combustion chamber 14 for supplying air to the combustion chamber 14 . The hydrogen and air are mixed in the combustion chamber 14 to realize combustion.

[0032] Among them, the hydrogen supply pipeline 2 is connected to a hydrogen tank 21, a pressure reducing valve 22 and a hydrogen injector 23. The hydrogen tank 21 is used to store hydrogen. One end of the hydrogen supply pipeline 2 is connected to the hydrogen tank 21, and the other end is connected to the combustion chamber 14. The pressure reducing valve 22 is connected to the hydrogen supply pipeline 2, and the end of the hydrogen supply pipeline 2 is connected to the hydrogen injector 23. The hydrogen injector 23 is installed on the cylinder head 12. Hydrogen flows out of the hydrogen tank 21 and is reduced in pressure through the pressure reducing valve 22. The reduced pressure hydrogen is sprayed into the combustion chamber 14 through the hydrogen injector 23. The air pipeline 3 is selectively connected to the combustion chamber 14 through the intake valve 31, and air enters the combustion chamber 14 from the air pipeline 3. In this way, the hydrogen introduced into the combustion chamber 14 is mixed with air and then burned.

[0033] The water supply pipeline 4 includes a water tank 41 and a water sprayer 42 connected to the water tank 41. The water sprayer 42 is installed on the cylinder head 12. The water sprayer 42 is provided with a first water spraying jet 421 and a second water spraying jet 422. The first water spraying jet 421 is configured to be arranged toward the piston 13 and is used to spray water to the piston 13. The second water spraying jet 422 forms a certain angle with the first water spraying jet 421 and is used to spray water into the combustion chamber 14.

[0034] Specifically, the water supply pipeline 4 is separated from the hydrogen supply pipeline 2, one end of the water supply pipeline 4 is connected to the water tank 41, and the other end is connected to the combustion chamber 14. A water pump 43 is provided in the water supply pipeline 4, and the end of the water supply pipeline 4 is connected to a sprinkler 42, and the sprinkler 42 is installed on the cylinder head 12. In this way, the water in the water tank 41 is sucked into the water supply pipeline 4 through the water pump 43, and then sprayed into the cylinder 1 through the sprinkler 42. Among them, the output end of the water sprayer 42 is provided with a first water spray beam 421 and a second water spray beam 422. The first water spray beam 421 is set toward the piston 13. The water of the first water spray beam 421 hits the surface of the piston 13 as much as possible, forming a water film on the surface of the piston 13 to avoid the hot gas during combustion in the cylinder directly transferring heat to the surface of the piston 13, thereby reducing heat transfer losses. An angle is formed between the second water spray beam 422 and the first water spray beam 421, and the angle is set toward the combustion chamber 14, so that the second water spray beam 422 can spray water toward the combustion chamber 14, which is mainly used for rapid evaporation, heat absorption and cooling, and suppressing premature ignition of the engine.

[0035] Thus, by setting the first water jet 421 and the second water jet 422 to be distributed in different directions, water can be sprayed on the piston 13 and the combustion chamber 14 respectively, so as to achieve evaporation heat absorption, and reduce the combustion temperature in the cylinder. On the one hand, it can suppress the abnormal combustion of premature combustion and knock in the cylinder, and on the other hand, it can avoid the temperature conditions for the generation of nitrogen oxides and reduce the emission of nitrogen oxides. At the same time, by controlling the pressure value of the second water jet 422, it can be avoided that the water jet is directly sprayed on the inner wall of the cylinder 1, and the water sprayed on the inner wall of the cylinder 1 is prevented from gathering and entering the crankcase from the gap between the piston 13 and the inner wall of the cylinder 1 to cause the problem of oil dilution and emulsification, thereby improving the performance of the engine 100.

[0036] According to the engine 100 of the embodiment of the present invention, a water sprayer 42 is arranged at the engine cylinder head 12 to spray water into the cylinder, thereby reducing the temperature in the cylinder, inhibiting engine pre-ignition and abnormal combustion such as knock, and reducing the heat transfer of the piston 13, thereby improving the thermal efficiency of the engine 100 and reducing nitrogen oxide emissions. At the same time, the problem of oil dilution and emulsification caused by water spraying in the cylinder of the engine 100 is solved.

[0037] In some embodiments, the first water spraying jet 421 is configured to extend in a direction parallel to the axial direction of the cylinder 1 , and one end of the first water spraying jet 421 close to the piston 13 is open for spraying water.

[0038] Specifically, the first water jet 421 is configured to be parallel to the axial direction of the cylinder 1 and to extend along the axial direction of the cylinder 1. The first water jet 421 is disposed in the cylinder 1. Figure 1 As shown, the axial direction of the cylinder 1 is arranged along the up-down direction, and the first water jet 421 extends along the up-down direction. The end of the first water jet 421 close to the piston 13 is open to spray water on the surface of the piston 13, and the direction of the first water jet 421 points to the center position of the piston 13. In this way, the first water jet 421 can hit the surface of the piston 13 as much as possible, forming a layer of water film on the surface of the piston 13, avoiding high-temperature gas from directly contacting the surface of the piston 13, reducing heat transfer of the piston 13, and improving thermal efficiency.

[0039] In some embodiments, the cylinder head 12 includes a first area 121 and a second area 122, the first area 121 and the second area 122 are located on both sides of the axis of the cylinder head 12, the water sprayer 42 is arranged in the first area 121, and the second water spraying jet 422 is inclined relative to the first water spraying jet 421 toward the direction close to the second area 122.

[0040] Specifically, the surface of the cylinder head 12 includes two regions, namely a first region 121 and a second region 122. The first region 121 and the second region 122 are located on both sides of the axis of the cylinder head 12. Figure 1 As shown, the first area 121 is located on the axial right side of the cylinder 1, and the second area 122 is located on the axial left side of the cylinder 1, wherein the water sprayer 42 is arranged in the first area 121, and the first water spraying jet 421 is distributed along the axial direction of the cylinder 1, and the second water spraying jet 422 is inclined relative to the first water spraying jet 421, and is inclined toward the direction of the second area 122, so that the second water spraying jet 422 can spray water toward the combustion chamber 14, which is beneficial to rapid evaporation and heat absorption and cooling in the combustion chamber 14, inhibiting pre-ignition and abnormal combustion of the engine, and after cooling, the temperature conditions for the generation of nitrogen oxides can be avoided, thereby reducing nitrogen oxide emissions.

[0041] Therefore, after entering the combustion chamber 14, the water at the second water jet 422 can be sprayed in a direction farther from the inner wall of the cylinder 1, so that more water is sprayed into the space of the combustion chamber 14, and the water at the second water jet 422 will not be directly sprayed onto the inner wall of the nearest cylinder 1 when entering the combustion chamber, but will be gathered and enter the crankcase from the gap between the piston 13 and the inner wall of the cylinder 1, thereby preventing the engine oil from being diluted and emulsified, thereby ensuring the operating performance of the engine 100.

[0042] In some embodiments, the angle between the second water jet 422 and the first water jet 421 is greater than 30°. In this way, the spray range of the second water jet 422 is larger, which is conducive to the rapid cooling of the combustion chamber 14 and can effectively suppress the engine's pre-ignition, abnormal combustion and other problems.

[0043] Specifically, Figure 2 As shown, the angle formed between the second water jet 422 and the first water jet 421 is greater than 30°, and the angle between the two can be 35°, 38° and 40°, etc. In this way, the angle between the second water jet 422 and the first water jet 421 is relatively large, so that the second water jet 422 can spray water toward the center of the combustion chamber 14, which is beneficial for the second water jet 422 to be sprayed into the entire combustion chamber 14 space as much as possible, and quickly evaporate, absorb heat and cool down in the combustion chamber 14. The value of the angle is not limited to that described in this embodiment, and can be designed according to the actual space and the position of the sprinkler 42.

[0044] Therefore, the angle between the second water jet 422 and the first water jet 421 is greater than 30°, and the second water jet 422 sprays water in an oblique direction, which can reduce the injection impact of the second water jet 422 on the combustion chamber 14, ensure that the penetration distance of the second water jet 422 is not too large, and reduce the amount of water sprayed onto the inner wall of the cylinder by the second water jet 422, thereby avoiding oil dilution.

[0045] In some embodiments, the diameter of the first water jet 421 is greater than the diameter of the second water jet 422. Specifically, Figure 2 As shown, the pipe diameter of the first water spraying water jet 421 is larger, so that the water output of the first water spraying water jet 421 can be larger, and the pipe diameter of the second water spraying water jet 422 is smaller, so that the water output of the second water spraying water jet 422 can be smaller. In this way, when the sprinkler 42 sprays water, water is sprayed through different pipe diameters to achieve different water spraying effects.

[0046] When the water sprayer 42 sprays water, more water will be sprayed toward the piston 13, which is conducive to quickly forming a water film on the surface of the piston 13, avoiding the high-temperature gas from directly transferring heat to the surface of the piston 13 during combustion in the cylinder, reducing the heat transfer of the piston 13, and by controlling the injection pressure and the size of the spray hole, a small amount of water will be sprayed toward the combustion chamber 14, which can avoid the second water spray jet 422 directly hitting the wall of the cylinder 1 and entering the crankcase along the wall, causing the risk of oil dilution. At the same time, in the actual design, the injection pressure and the size of the spray hole are controlled to ensure that the penetration distance of the second water spray jet 422 is not too large, reducing the amount of the second water spray jet 422 directly sprayed onto the wall of the cylinder 1, which can effectively avoid the dilution and emulsification of the oil and improve the performance of the engine 100.

[0047] In some embodiments, there are multiple second water spray beams 422, and an angle is formed between two adjacent second water spray beams 422, so that the multiple second water spray beams 422 can evenly cover the range of the combustion chamber 14, and the water spray volume is uniform, which is conducive to cooling the combustion chamber 14.

[0048] Specifically, Figure 2 As shown, there are two second water jets 422, and an angle is formed between the two second water jets 422, the range of which can be smaller than the angle between the first water jet 421 and the second water jet 422. The angle between the two second water jets 422 is reasonably set so that the two water jets cover the combustion chamber 14 and do not directly hit the inner wall of the cylinder 1, thereby avoiding the oil dilution phenomenon and affecting the performance of the engine 100. The diameters of the two second water jets 422 can be the same or different, and are set according to actual needs. Also, at the nozzle of the water sprayer 42, three water jets are formed, and the three water jets can be set as an asymmetric structure, and the angles between the three water jets are all inclined toward the second area 122, and the number and distribution form of the second water jets 422 are not limited to those described in this embodiment, and can be reasonably designed according to actual conditions.

[0049] In some embodiments, the water sprayer 42 is disposed throughout the cylinder head 12 , and an angle between an axial direction of the water sprayer 42 and a plane of the cylinder head 12 is less than 45°.

[0050] Specifically, Figure 1As shown, the water sprayer 42 is arranged through the cylinder head 12, specifically, the output end of the water sprayer 42 extends into the cylinder head 12, and the water sprayer 42 is installed obliquely on the cylinder head 12, and the water sprayer 42 is inclined toward the side of the water supply pipe 4, and the axial direction of the water sprayer 42 forms an angle with the plane of the cylinder head 12, and the angle is less than 45°, and the angle can be 40°, 30°, etc., so that the first water spraying water beam 421 extends in the up and down direction, and the second water spraying water beam 422 has more setting space toward the second area 122, which can meet the distribution of multiple second water spraying water beams 422, wherein the value of the angle is not limited to that described in this embodiment, and can be set according to needs.

[0051] Therefore, by setting the angle between the axis of the water sprinkler 42 and the plane of the cylinder head 12 to be less than 45°, that is, adopting a direct injection side water spraying method in the cylinder, the injection pressures of the first water spray beam 421 and the second water spray beam 422 at the output end of the water sprinkler 42 are different, and the injection ranges are also different. This is conducive to the water spray of the water sprinkler 42 covering the entire combustion chamber 14, which is conducive to rapid cooling and can ensure the installation strength of the water sprinkler 42.

[0052] In some embodiments, the distance between the water sprayer 42 and the inner peripheral wall of the cylinder block 11 is smaller than the distance between the water sprayer 42 and the center of the cylinder head 12 .

[0053] Specifically, the water sprayer 42 is arranged close to the outer side of the cylinder 1, and the distance between the water sprayer 42 and the inner peripheral wall of the cylinder body 11 is small, and is smaller than the distance between the water sprayer 42 and the center of the cylinder head 12. In this way, the water sprayer 42 occupies less space, which is conducive to the reasonable layout of other components, such as Figure 1 As shown, the water sprinkler 42 is arranged near the right side of the cylinder body 11, and the output end of the water sprinkler 42 is inclined toward the second area 122. In this way, water beams in different directions are arranged at the output end of the water sprinkler 42, which is beneficial to spray water on the piston 13 and the combustion chamber 14 in an all-round way to achieve rapid cooling.

[0054] Among them, the hydrogen injector 23 is arranged near the center of the cylinder head 12, the water injector 42 is arranged separately from the hydrogen injector 23, and the cylinder head 12 is also provided with a spark plug 6 for ignition, which is arranged on the left side of the hydrogen injector 23. The air pipeline 3 is selectively connected with the cylinder head 12 through the intake valve 31 and is arranged on the left side of the spark plug 6. The spark plug 6 is arranged between the air pipeline and the hydrogen injector 23 to ensure reliable ignition and sufficient combustion after the hydrogen and air are mixed. The exhaust pipeline 5 is arranged between the hydrogen injector 23 and the water injector 42, and the exhaust pipeline 5 is selectively connected with the cylinder head 12 through the exhaust valve 51. The burned gas is discharged through the exhaust pipeline 5. The above arrangement is reasonable and effectively utilizes the space on the surface of the cylinder 1.

[0055] In some embodiments, the engine 100 further includes a control module, the water sprayer 42 is electrically connected to the control module, and the control module is electrically connected to a control unit of the engine 100, and the control module is configured to control the water sprayer 42 to spray water when the engine 100 is in the late compression stroke.

[0056] Specifically, the engine 100 is also provided with a control module, the water sprayer 42 is electrically connected to the control module through a wire, and the control module is electrically connected to a control unit of the engine 100, and there is signal interaction between the control unit and the control module. The control unit is the overall control role of the engine 100, and is used for the control module to control the working state of the water sprayer 42. When the engine 100 is working in the late compression stroke, the piston 13 moves upward, and the volume of the combustion chamber 14 decreases. The control module controls the water sprayer 42 to spray water into the cylinder 1. The first water spraying water jet 421 is more likely to hit the surface of the piston 13 to form a water film, thereby preventing high-temperature air from directly transferring heat to the piston 13. Therefore, the combustion temperature in the cylinder can be reduced by absorbing heat through the evaporation of the three water jets, thereby suppressing premature ignition and abnormal combustion such as knocking of the engine 100.

[0057] The invention also provides a vehicle.

[0058] According to the vehicle of the embodiment of the present invention, there is provided an engine 100 as described in any of the above embodiments, and a water sprayer 42 is provided at the engine cylinder head 12 to spray water into the cylinder, thereby reducing the temperature in the cylinder, inhibiting engine pre-ignition and abnormal combustion such as knock, and reducing the heat transfer of the piston 13, thereby improving the thermal efficiency of the engine 100, reducing nitrogen oxide emissions, and at the same time, solving the problem of oil dilution and emulsification caused by water spraying in the cylinder of the engine 100.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An engine, characterized in that: include: A cylinder, the cylinder comprising a cylinder body and a cylinder head, a movable piston is disposed in the cylinder body, and a combustion chamber is formed between the piston and the cylinder head; a hydrogen supply pipeline and an air pipeline, wherein the hydrogen supply pipeline is communicated with the combustion chamber for supplying hydrogen to the combustion chamber, and the air pipeline is communicated with the combustion chamber for supplying air to the combustion chamber; A water supply pipeline, the water supply pipeline includes a water tank and a water sprayer connected to the water tank, the water sprayer is installed on the cylinder head, the water sprayer is provided with a first water spray jet and a second water spray jet, the first water spray jet is configured to be arranged toward the piston and used to spray water to the piston, the second water spray jet forms a certain angle with the first water spray jet and is used to spray water into the combustion chamber.

2. The engine according to claim 1, characterized in that The first water spraying jet is configured to extend in an axial direction parallel to the cylinder, and one end of the first water spraying jet close to the piston is open for spraying water.

3. The engine according to claim 2, characterized in that The cylinder head includes a first area and a second area, wherein the first area and the second area are located on both sides of the axis of the cylinder head, the water sprayer is arranged in the first area, and the second water spray jet is inclined relative to the first water spray jet toward a direction close to the second area.

4. The engine according to claim 1, characterized in that The angle between the second water spray jet and the first water spray jet is greater than 30°.

5. The engine according to claim 1, characterized in that The diameter of the first water spraying water jet is greater than the diameter of the second water spraying water jet.

6. The engine according to claim 1, characterized in that There are multiple second water spraying beams, and an angle is formed between two adjacent second water spraying beams.

7. The engine according to claim 1, characterized in that The water sprayer is arranged to penetrate the cylinder head, and the angle between the axial direction of the water sprayer and the plane of the cylinder head is less than 45°.

8. The engine according to claim 1, characterized in that The distance between the water sprayer and the inner peripheral wall of the cylinder body is smaller than the distance between the water sprayer and the center of the cylinder head.

9. The engine according to claim 1, characterized in that It also includes a control module, the water sprinkler is electrically connected to the control module, and the control module is electrically connected to a control unit of the engine, and the control module is configured to control the water sprinkler to spray water when the engine is in the late compression stroke.

10. A vehicle, characterized in that: An engine according to any one of claims 1 to 9 is provided.

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