Hydrogen engine and vehicle

Abstract

The invention discloses a hydrogen engine and a vehicle, and the hydrogen engine comprises a crankcase, a first cavity, a second cavity, a crank connection system and a separation system; the first cavity is communicated with the crankcase, and the first cavity and the second cavity are isolated from each other; the bent communication system is connected with the second cavity through a pipeline; the bent communication system is used for carrying out oil-gas separation on the mixed gas in the second cavity; the separation system comprises a first hydrogen storage device and a separation unit; the first hydrogen storage device comprises a first inlet; the separation unit comprises a hydrogen separation device, and a third cavity and a fourth cavity which are isolated by the hydrogen separation device; the third cavity is in pipeline connection with the first cavity and the second cavity, and the fourth cavity is in pipeline connection with a first inlet of the first hydrogen storage device; the separation unit is at least used for separating hydrogen. According to the technical scheme, hydrogen separation of the mixed gas is achieved, the explosion risk can be avoided, and meanwhile unburned hydrogen can be prevented from entering the intake manifold to affect the air-fuel ratio of the engine.

Description

Technical Field

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

[0002] When hydrogen is burned in a hydrogen engine, the high-temperature water vapor produced tends to accumulate in the crankcase, causing oil emulsification. At the same time, incompletely burned hydrogen will leak into the crankcase. Since the existing oil-gas separator cannot separate the hydrogen from the mixed gas, when the hydrogen in the crankcase reaches a certain concentration, there will be a risk of explosion, seriously affecting the safety of the hydrogen engine.

[0003] To solve the above problems, active ventilation and active air replenishment are currently used to dilute the water vapor and unburned hydrogen in the crankcase, thereby reducing the risk of oil emulsification and the concentration of hydrogen in the crankcase. However, active ventilation and active air replenishment require an electric pump, and due to the large amount of ventilation or air replenishment, the electric pump is huge and may not be implemented in actual applications. In addition, the active ventilation solution will cause the hydrogen-containing mixed gas in the crankcase to re-enter the intake manifold, resulting in the inability to accurately control the unburned hydrogen concentration and hydrogen ratio, thereby affecting the preset air-fuel ratio of the engine and affecting the normal operation of the engine. Summary of the invention

[0004] The present invention provides a hydrogen engine and a vehicle to solve the problems existing in the prior art, realize hydrogen separation of mixed gas, avoid explosion risk, and at the same time, prevent unburned hydrogen from entering the intake manifold and affecting the air-fuel ratio of the engine.

[0005] In a first aspect, the present invention provides a hydrogen engine, comprising: a crankcase, a first cavity, a second cavity, a crankshaft system and a separation system;

[0006] The first cavity is communicated with the crankcase, and the first cavity and the second cavity are isolated from each other;

[0007] The tortuous system is connected to the second cavity pipeline; the tortuous system is used to separate oil and gas from the mixed gas in the second cavity;

[0008] The separation system includes a first hydrogen storage device and a separation unit; the first hydrogen storage device includes a first inlet; the separation unit includes a hydrogen separation device, and a third cavity and a fourth cavity isolated by the hydrogen separation device; the third cavity is connected to the first cavity and the second cavity pipeline respectively, and the fourth cavity is connected to the first inlet pipeline of the first hydrogen storage device; the separation unit is at least used to separate hydrogen.

[0009] Optionally, the separation system further comprises a first electric pump;

[0010] The first electric pump includes a first suction port and a first discharge port; the first suction port is connected to the first cavity pipeline; the first discharge port is connected to the third cavity.

[0011] Optionally, the third cavity includes a first sub-cavity and a second sub-cavity;

[0012] The first sub-chamber is connected to the first chamber pipeline; the second sub-chamber is connected to the second chamber pipeline; the hydrogen separation device is arranged between the first sub-chamber and the fourth chamber;

[0013] A first one-way valve is disposed between the first sub-cavity and the second sub-cavity; the first one-way valve is used to control the mixed gas in the first sub-cavity to flow to the second sub-cavity.

[0014] Optionally, the opening pressure of the first one-way valve is greater than the optimal hydrogen transmembrane pressure of the hydrogen separation device.

[0015] Optionally, the first electric pump (53) further comprises a second suction port; the second sub-chamber (5222) comprises a first outlet (5222a) and a second outlet (5222b);

[0016] At least one first hydrogen sensor (54) is disposed in the second sub-cavity (5222); the first hydrogen sensor (54) is used to monitor the hydrogen content in the second sub-cavity (5222);

[0017] The first outlet (5222a) is opened when the hydrogen content in the second sub-cavity (5222) is greater than or equal to a preset value; the second outlet (5222b) is opened when the hydrogen content in the second sub-cavity (5222) is less than the preset value.

[0018] Optionally, the separation unit further includes a water absorption structure; the water absorption structure is used to separate water vapor in the mixed gas.

[0019] Optionally, the hydrogen engine further comprises: a hydrogen supply system;

[0020] The first hydrogen storage device comprises a hydrogen outlet; the hydrogen outlet is connected to the hydrogen supply system pipeline.

[0021] Optionally, the hydrogen engine further comprises: an air intake system and a second electric pump;

[0022] The second electric pump comprises a third suction port and a second discharge port; the third suction port is connected to the Qutong system pipeline; the second discharge port is connected to the intake system pipeline.

[0023] Optionally, at least one second hydrogen sensor is provided in the crankcase; the second hydrogen sensor is used to detect the hydrogen concentration in the crankcase.

[0024] In a second aspect, the present invention provides a vehicle comprising at least any one of the hydrogen engines described above.

[0025] The technical solution of the present invention is that the hydrogen engine includes a crankcase, a first cavity, a second cavity, a tortuosity system and a separation system. The first cavity is connected to the crankcase so that the mixed gas that leaks into the crankcase during hydrogen combustion can enter the first cavity; the first cavity and the second cavity are isolated from each other, the third cavity of the separation unit in the separation system is connected to the first cavity and the second cavity pipeline respectively, the fourth cavity is connected to the first inlet pipeline of the first hydrogen storage device, the separation unit is at least used to separate hydrogen, the second cavity is connected to the tortuosity system pipeline, the tortuosity system is used to separate oil and gas from the mixed gas in the second cavity, so that the mixed gas in the first cavity can enter the second cavity after hydrogen is separated by the separation unit, and then the mixed gas in the second cavity is separated by oil and gas through the tortuosity system, so that the hydrogen engine can realize hydrogen separation of the mixed gas, and the separated hydrogen is processed separately to avoid the risk of explosion. At the same time, it can prevent unburned hydrogen from entering the intake manifold and affecting the air-fuel ratio of the engine, thereby improving the operating stability of the hydrogen engine.

[0026] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of a hydrogen engine provided by an embodiment of the present invention;

[0029] Figure 2 A schematic structural diagram of a vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0032] Figure 1 This is a schematic diagram of the structure of a hydrogen engine provided by an embodiment of the present invention. This embodiment provides a hydrogen engine, referring to Figure 1 As shown, the hydrogen engine includes a crankcase 10, a first cavity 20, a second cavity 30, a tortuosity system 40 and a separation system 50; the first cavity 20 is connected to the crankcase 10, and the first cavity 20 and the second cavity 30 are isolated from each other; the tortuosity system 40 is connected to the second cavity 30 by a pipeline; the tortuosity system 40 is used to separate oil and gas from the mixed gas in the second cavity 30; the separation system 50 includes a first hydrogen storage device 51 and a separation unit 52; the first hydrogen storage device 51 includes a first inlet; the separation unit 52 includes a hydrogen separation device 521, and a third cavity 522 and a fourth cavity 523 isolated by the hydrogen separation device 521; the third cavity 522 is connected to the first cavity 20 and the second cavity 30 by pipelines respectively, and the fourth cavity 523 is connected to the first inlet pipeline of the first hydrogen storage device 51; the separation unit 52 is at least used to separate hydrogen.

[0033] The engine body of the hydrogen engine 01 includes a cylinder block 001 , a piston 002 , a cylinder head 003 , and a cylinder head cover 004 . The cylinder block 001 , the piston 002 , and the cylinder head 003 together form a combustion chamber 90 . The cylinder block 001 and the piston 002 together form a crankcase 10 .

[0034] In an alternative embodiment, continue to refer to Figure 1As shown, the hydrogen engine 01 further includes a hydrogen supply system 60 and an intake system 70. The hydrogen supply system 60 includes a second hydrogen storage device 61 and an injection device 62, the second hydrogen storage device 61 and the injection device 62 are connected by a pipeline, and the injection device 62 is connected to the combustion chamber 90. The intake system 70 includes an air filter 71, a supercharger 72, an intercooler 73, a throttle 74 and an intake manifold 75, the air filter 71, the supercharger 72, the intercooler 73, the throttle 74 and the intake manifold 75 are connected by pipelines in sequence, and the intake manifold 75 is connected to the combustion chamber 90. When the hydrogen engine 01 is working, fresh air enters the combustion chamber 90 through the intake system 70, that is, through the air filter 71, the supercharger 72, the intercooler 73, the throttle 74 and the intake manifold 75 in sequence. At the same time, the hydrogen in the second hydrogen storage device 61 is quantitatively injected into the combustion chamber 90 through the injection device 62 according to the signal of the engine control system. The hydrogen and the fresh air are mixed in a preset ratio, and the mixed gas is ignited by the ignition system (not shown in the figure). The mixed gas performs work to maintain the normal operation of the engine. It is understandable that during the operation of the hydrogen engine 01, part of the mixed gas will flow into the crankcase 10. If the mixed gas in the crankcase 10 is not processed, when the concentration of unburned hydrogen in the crankcase 10 reaches a certain proportion, there will be a risk of explosion.

[0035] It can be understood that the hydrogen engine includes an air supply channel, an oil return channel and an air intake channel of a tortuosity system, and the air intake channel of the tortuosity system is not connected to the air supply channel and the oil return channel in the cylinder head and the cylinder head cover. The first cavity 20 can be understood as a cavity formed by the air intake channel of the tortuosity system inside the cylinder head 003, and the first cavity 20 is connected to the crankcase 10, so that the mixed gas in the crankcase 10 can enter the first cavity 20. The second cavity 30 can be understood as a cavity formed by the air intake channel of the tortuosity system inside the cylinder head cover 004. The isolation of the first cavity 20 and the second cavity 30 can be understood as that the first cavity 20 and the second cavity 30 are not connected without an external device, so that the mixed gas in the first cavity 20 cannot enter the second cavity 30 without an external device.

[0036] The separation system 50 includes a first hydrogen storage device 51 and a separation unit 52, wherein the first hydrogen storage device 51 is used to store hydrogen, and the separation unit 52 is used at least to separate hydrogen. In an optional embodiment, the separation unit 52 includes a hydrogen separation device 521, a third cavity 522, and a fourth cavity 523, wherein the third cavity 522 and the fourth cavity 523 are isolated by the hydrogen separation device 521, and the fourth cavity 523 is connected to the first inlet pipe of the first hydrogen storage device 51. In an optional embodiment, the hydrogen separation device 521 includes a hydrogen separation membrane.

[0037] The third chamber 522 is connected to the first chamber 20 and the second chamber 30 by pipelines, respectively. The mixed gas in the first chamber 20 can enter the third chamber 522, so that the hydrogen in the mixed gas can pass through the hydrogen separation device 521 and enter the fourth chamber 523. Since the fourth chamber 523 is connected to the first inlet of the first hydrogen storage device 51, the hydrogen separated in the fourth chamber 523 can enter the first hydrogen storage device 51 for storage. In addition, since the third chamber 522 is also connected to the second chamber 30 by pipelines, the mixed gas in the third chamber 522 that has been separated by hydrogen through the hydrogen separation device 521 enters the second chamber 30.

[0038] The tortuosity system 40 is a ventilation system of the crankcase 10 of the hydrogen engine. The tortuosity system 40 is connected to the second cavity 30 by a pipeline, and the tortuosity system 40 is used to separate the oil and gas from the mixed gas in the second cavity 30. Figure 1 As shown, the Qutong system 40 includes an oil-gas separator 41, and the hydrogen engine 01 also includes a second electric pump 80. The inlet of the oil-gas separator 41 is connected to the second cavity 30, and the outlet of the oil-gas separator 41 is connected to the third suction port pipeline of the second electric pump 80. The second discharge port of the second electric pump 80 is connected to the pipeline of the intake system 70. The oil-gas separator 41 is used to separate the oil and gas in the mixed gas. The second electric pump 80 is used to pump the mixed gas in the second cavity 30 into the intake system 70 after the oil and gas are separated by the oil-gas separator 41, so that the mixed gas (the mixed gas contains only a small amount or no hydrogen) passing through the oil-gas separator can continue to be provided to the combustion chamber as fresh air through the intake system 70 and continue to participate in combustion.

[0039] In this embodiment, the hydrogen engine includes a crankcase, a first cavity, a second cavity, a tortuosity system and a separation system, the first cavity is connected to the crankcase, so that the mixed gas that leaks into the crankcase during hydrogen combustion can enter the first cavity; the first cavity and the second cavity are isolated from each other, the third cavity of the separation unit in the separation system is connected to the first cavity and the second cavity pipeline respectively, the fourth cavity is connected to the first inlet pipeline of the first hydrogen storage device, the separation unit is at least used to separate hydrogen, the second cavity is connected to the tortuosity system pipeline, the tortuosity system is used to separate oil and gas from the mixed gas in the second cavity, so that the mixed gas in the first cavity can enter the second cavity after the hydrogen is separated by the separation unit, and then the mixed gas in the second cavity is separated by oil and gas through the tortuosity system, so that the hydrogen engine can realize hydrogen separation of the mixed gas, and the separated hydrogen is processed separately to avoid the risk of explosion. At the same time, it can prevent unburned hydrogen from entering the intake manifold and affecting the air-fuel ratio of the engine, thereby improving the operating stability of the hydrogen engine.

[0040] Optional, continue to refer to Figure 1As shown, the separation system 50 also includes a first electric pump 53 ; the first electric pump 53 includes a first suction port and a first discharge port; the first suction port is connected to the first cavity 20 by a pipeline; and the first discharge port is connected to the third cavity 522 .

[0041] The first electric pump 53 may be, but is not limited to, a gear pump or a centrifugal pump, etc. The present embodiment does not specifically limit the type of the first electric pump 53 , as long as it can pump the mixed gas in the first cavity 20 into the third cavity 522 .

[0042] Specifically, by connecting the first suction port of the first electric pump 53 to the first cavity 20, and connecting the first discharge port of the first electric pump 53 to the third cavity 522, the mixed gas in the crankcase 10 can be pumped into the third cavity 522. At the same time, the pressure in the third cavity 522 is greater than the pressure in the fourth cavity 523 and the second cavity 30, so that the hydrogen in the mixed gas can pass through the hydrogen separation device 521 and enter the fourth cavity 523 to achieve hydrogen separation, while the mixed gas that cannot pass through the hydrogen separation device 521 (containing only a small amount or no hydrogen) enters the second cavity 30, and then continues to participate in combustion after passing through the tortuosity system 40.

[0043] Optional, continue to refer to Figure 1 As shown, the third chamber 522 includes a first sub-chamber 5221 and a second sub-chamber 5222; the first sub-chamber 5221 is connected to the first chamber 20 by a pipeline; the second sub-chamber 5222 is connected to the second chamber 30 by a pipeline; the hydrogen separation device 521 is arranged between the first sub-chamber 5221 and the fourth chamber 523; a first one-way valve 5223 is arranged between the first sub-chamber 5221 and the second sub-chamber 5222; the first one-way valve 5223 is used to control the mixed gas in the first sub-chamber 5221 to flow to the second sub-chamber 5222.

[0044] Among them, the first one-way valve 5223 may include but is not limited to a straight-through one-way valve or a right-angle one-way valve, etc., which can control the mixed gas in the first sub-chamber 5221 to flow to the second sub-chamber 5222, while the mixed gas in the second sub-chamber 5222 cannot flow back to the first sub-chamber 5221.

[0045] Optionally, the opening pressure of the first one-way valve 5223 is greater than the optimal hydrogen transmembrane pressure of the hydrogen separation device 521 .

[0046] The opening pressure of the first one-way valve 5223 is the minimum upstream pressure required by the first one-way valve 5223, that is, the minimum pressure difference between the first sub-chamber 5221 and the second sub-chamber 5222 for conducting the first one-way valve 5223. The optimal hydrogen transmembrane pressure of the hydrogen separation device 521 refers to the pressure difference between the first sub-chamber 5221 and the fourth chamber 523 when the hydrogen in the first sub-chamber 5221 passes through the hydrogen separation device 521 to the fourth chamber 523 at the maximum rate.

[0047] A first one-way valve 5223 is included between the first sub-chamber 5221 and the second sub-chamber 5222. The conduction direction of the first one-way valve 5223 is from the first sub-chamber 5221 to the second sub-chamber 5222. Since the opening pressure of the first one-way valve 5223 is greater than the optimal hydrogen transmembrane pressure of the hydrogen separation device 521, the mixed gas in the first sub-chamber 5221 is preferentially separated from the hydrogen by the hydrogen separation device 521, and then the mixed gas in the first sub-chamber 5221 enters the second sub-chamber 5222 through the first one-way valve 5223, so that the hydrogen concentration in the mixed gas in the second sub-chamber 5222 is further reduced, which is beneficial to improving the efficiency of the separation unit 52.

[0048] Optionally, the first electric pump 53 also includes a second suction port; the second sub-cavity 5222 includes a first outlet 5222a and a second outlet 5222b; at least one first hydrogen sensor 54 is arranged in the second sub-cavity 5222; the first hydrogen sensor 54 is used to monitor the hydrogen content in the second sub-cavity 5222; the first outlet 5222a is turned on when the hydrogen content in the second sub-cavity 5222 is greater than or equal to a preset value; the second outlet 5222b is turned on when the hydrogen content in the second sub-cavity 5222 is less than a preset value.

[0049] The first hydrogen sensor 54 may include, but is not limited to, an electrochemical hydrogen concentration sensor or a resistive single-body sensor, etc., as long as it can detect the concentration of hydrogen in the first hydrogen storage device 51. It should be noted that at least one first hydrogen sensor 54 is provided in the second sub-cavity 5222, which can be understood as one first hydrogen sensor 54 is provided in the second sub-cavity 5222, or a plurality of first hydrogen sensors 54 are provided in the second sub-cavity 5222; Figure 1Only the case where one first hydrogen sensor 54 is provided in the second sub-cavity 5222 is exemplarily shown, and the number of the first hydrogen sensors 54 in the second sub-cavity 5222 is not limited. When a plurality of first hydrogen sensors 54 are provided in the second sub-cavity 5222, the plurality of first hydrogen sensors 54 are distributed as evenly as possible in the second sub-cavity 5222 to detect the hydrogen concentration at each position in the second sub-cavity 5222. At this time, the hydrogen concentration in the second sub-cavity 5222 can be understood as the maximum value of the hydrogen concentrations detected by the first hydrogen sensors 54, or the average value of the hydrogen concentrations detected by the first hydrogen sensors 54, which is not specifically limited in this embodiment.

[0050] The preset value can be set according to the actual demand for fuel hydrogen concentration. In an optional embodiment, the preset value is the minimum explosion limit concentration of hydrogen.

[0051] Specifically, when the hydrogen concentration detected by each first hydrogen sensor 54 is greater than or equal to the preset value, it means that the hydrogen content in the second sub-cavity 5222 is high. At this time, the first outlet 5222a can be turned on to allow the mixed gas in the second sub-cavity 5222 to enter the first electric pump 53 and then enter the hydrogen separation device 521 again for hydrogen separation, thereby preventing hydrogen from participating in combustion through the intake passage of the hydrogen engine and affecting the air-fuel ratio of the hydrogen engine. On the contrary, when the hydrogen concentration is less than the preset value, the mixed gas in the second sub-cavity 5222 can enter the second cavity 30 through the second outlet 5222b, and then enter the curved passage system 40 for oil-gas separation. In this way, the hydrogen separation effect can be further improved.

[0052] Optionally, the separation unit 52 further includes a water absorption structure; the water absorption structure is used to separate water vapor from the mixed gas.

[0053] The water absorbing structure may include, but is not limited to, water absorbing materials such as water absorbing resin or a structure that utilizes temperature difference to condense water vapor, etc., as long as it can separate water vapor from the mixed gas.

[0054] Optionally, the separation unit 52 also includes a water vapor outlet and at least one water guide groove; the water vapor outlet is arranged at the bottom of the third cavity 522; the water guide groove is arranged on the inner wall of the third cavity 522; the water guide grooves are connected to each other, and there is at least one water guide groove connected to the water vapor outlet.

[0055] Among them, the water guide groove can be understood as a groove arranged on the inner wall of the third cavity 522. The water guide groove is used to guide the condensed water to the water vapor outlet and can be, but not limited to, a straight groove and / or a curved groove. At least one water guide groove means one water guide groove or multiple water guide grooves. When the separation unit 52 includes multiple water guide grooves, each water guide groove can be the same or different. It can be understood that the more evenly the water guide grooves are distributed on the inner wall of the third cavity 522, the higher the efficiency of separating water vapor.

[0056] Specifically, when the hydrogen engine 01 is running, hydrogen and fresh air burn in the combustion chamber, and part of the high-temperature mixed gas in the combustion chamber will leak into the crankcase 10. Therefore, the temperature of the mixed gas pumped to the third cavity 522 by the first electric pump 53 is relatively high, while the temperature of the gas outside the separation unit 52 is relatively low. When the water vapor in the mixed gas encounters the inner wall with a lower temperature, condensation occurs. By providing a guide groove on the inner wall of the third cavity 522, and at least one guide groove being connected to the water vapor outlet 524, the water vapor condensed on the inner wall of the third cavity 522 can flow back to the water vapor outlet 524 through the guide groove, thereby realizing the separation of water vapor in the mixed gas. In this way, the water vapor generated by the combustion of hydrogen can be prevented from causing emulsification of the lubricating oil, which is beneficial to extending the service life of the lubricating oil, and further extending the maintenance cycle of the hydrogen engine.

[0057] Optional, continue to refer to Figure 1 As shown, the first hydrogen storage device 51 includes a hydrogen outlet, which is connected to the hydrogen supply system 60 by a pipeline, so that the hydrogen in the first hydrogen storage device 51 can be provided to the combustion chamber 90 through the hydrogen supply system 60 to continue to be burned as fuel, which is beneficial to saving resources.

[0058] In an optional embodiment, the hydrogen outlet and the hydrogen supply system 60 are connected via a second one-way valve 57 pipeline, and the conduction direction of the second one-way valve 57 is from the hydrogen outlet to the hydrogen supply system 60, thereby preventing the hydrogen in the hydrogen supply system 60 from flowing back into the first hydrogen storage device 51.

[0059] In an alternative embodiment, continue to refer to Figure 1 As shown, at least one second hydrogen sensor 11 is provided in the crankcase 10, and the second hydrogen sensor 11 is used to detect the hydrogen concentration in the crankcase 10, so as to increase the power of the first electric pump 53 and the second electric pump when the hydrogen concentration in the crankcase 10 is greater than or equal to the minimum explosion limit concentration of hydrogen, so as to prevent the hydrogen concentration in the crankcase 10 from being too high and posing an explosion risk. When the hydrogen concentration in the crankcase 10 is less than the minimum explosion limit concentration of hydrogen, the power of the electric pump is reduced, thereby saving energy while preventing the crankcase 10 from exploding.

[0060] Based on the same inventive concept, this embodiment also provides a vehicle. Figure 2A schematic diagram of the structure of a vehicle provided in an embodiment of the present invention, referring to Figure 2 As shown, the vehicle 100 provided in this embodiment at least includes the hydrogen engine 01 provided in any of the above embodiments.

[0061] Since the vehicle provided in the embodiment of the present invention includes the above-mentioned hydrogen engine, it can have the corresponding structure and characteristics of the hydrogen engine provided in the embodiment of the present invention, and can achieve the beneficial effects of the hydrogen engine provided in the embodiment of the present invention. The similarities can be referred to the above description.

[0062] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen engine, characterized in that: include: A crankcase (10), a first cavity (20), a second cavity (30), a crankshaft system (40) and a separation system (50); The first cavity (20) is in communication with the crankcase (10), and the first cavity (20) and the second cavity (30) are isolated from each other; The tortuous system (40) is connected to the pipeline of the second cavity (30); the tortuous system (40) is used to separate oil and gas from the mixed gas in the second cavity (30); The separation system (50) comprises a first hydrogen storage device (51) and a separation unit (52); the first hydrogen storage device (51) comprises a first inlet; the separation unit (52) comprises a hydrogen separation device (521), and a third cavity (522) and a fourth cavity (523) separated by the hydrogen separation device (521); the third cavity (522) is connected to the first cavity (20) and the second cavity (30) via pipelines, respectively, and the fourth cavity (523) is connected to the first inlet pipeline of the first hydrogen storage device (521); the separation unit (52) is at least used for separating hydrogen.

2. The hydrogen engine according to claim 1, characterized in that: The separation system (50) further comprises a first electric pump (53); The first electric pump (53) comprises a first suction port and a first discharge port; the first suction port is connected to the first cavity (20) via a pipeline; and the first discharge port is connected to the third cavity (522).

3. The hydrogen engine according to claim 2, characterized in that: The third cavity (522) includes a first sub-cavity (5221) and a second sub-cavity (5222); The first sub-chamber (5221) is connected to the first chamber (20) via a pipeline; the second sub-chamber (5222) is connected to the second chamber (30) via a pipeline; the hydrogen separation device (521) is arranged between the first sub-chamber (5221) and the fourth chamber (523); A first one-way valve (5223) is provided between the first sub-chamber (5221) and the second sub-chamber (5222); the first one-way valve (5223) is used to control the mixed gas in the first sub-chamber (5221) to flow to the second sub-chamber (5222).

4. The hydrogen engine according to claim 3, characterized in that: The opening pressure of the first one-way valve (5223) is greater than the optimal hydrogen transmembrane pressure of the hydrogen separation device (521).

5. The hydrogen engine according to claim 3, characterized in that: The first electric pump (53) further comprises a second suction port; the second sub-chamber (5222) comprises a first outlet (5222a) and a second outlet (5222b); At least one first hydrogen sensor (54) is disposed in the second sub-cavity (5222); the first hydrogen sensor (54) is used to monitor the hydrogen content in the second sub-cavity (5222); The first outlet (5222a) is opened when the hydrogen content in the second sub-cavity (5222) is greater than or equal to a preset value; the second outlet (5222b) is opened when the hydrogen content in the second sub-cavity (5222) is less than the preset value.

6. The hydrogen engine according to claim 1, characterized in that: The separation unit (52) further comprises a water absorption structure; the water absorption structure is used to separate water vapor from the mixed gas.

7. The hydrogen engine according to claim 2, characterized in that: Also included: a hydrogen supply system (60); The first hydrogen storage device (51) comprises a hydrogen outlet; the hydrogen outlet is connected to a pipeline of the hydrogen supply system (60).

8. The hydrogen engine according to claim 2, characterized in that: Also includes: An air intake system (70) and a second electric pump (80); The second electric pump (80) comprises a third suction port and a second discharge port; the third suction port is connected to a pipeline of the curved passage system (40); and the second discharge port is connected to a pipeline of the intake system (70).

9. The hydrogen engine according to claim 8, characterized in that: At least one second hydrogen sensor (11) is arranged in the crankcase (10); the second hydrogen sensor (11) is used to detect the hydrogen concentration in the crankcase (10).

10. A vehicle, characterized in that: At least comprising the hydrogen engine according to any one of claims 1-9.

Images