Hydrogen supply structure of engine, hydrogen supply method and vehicle

Abstract

The invention discloses a hydrogen supply structure of an engine, a hydrogen supply method and a vehicle, and the hydrogen supply structure of the engine comprises a hydrogen tank; the inlet end of the gas inlet pipeline is connected with the hydrogen tank, and a pressure stabilizing cavity is formed in the gas inlet pipeline; and the air cylinder cover is provided with a hydrogen inlet channel, the outlet end of the air inlet pipeline is connected with the hydrogen inlet channel, the hydrogen inlet channel is provided with a movable first throttle valve, and the first throttle valve is configured to be driven in an electromagnetic mode. According to the hydrogen supply structure of the engine, the pressure stabilizing cavity is formed in the gas inlet pipeline, the pressure of hydrogen supplied by the hydrogen tank can be reduced, the problems of hydrogen leakage and the like can be solved, the first throttle valve driven by the electromagnetism is arranged in the hydrogen inlet channel, the hydrogen supply opening degree can be accurately controlled, then it can be guaranteed that the response states of all the cylinders are consistent, and the service life of the engine is prolonged. Therefore, the service life of the engine is prolonged, the using effect is better, and meanwhile the structure of the electromagnetically-driven first throttle valve is simple and low in setting cost.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a hydrogen supply structure of an engine, an air supply method of an engine and a vehicle. Background Art

[0002] With the introduction 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. Compared with fuel cells, hydrogen internal combustion engines have outstanding cost advantages. At the same time, they can share the mature industrial chain of traditional gasoline and diesel engines, make full use of the existing R&D, manufacturing, and supply chain resources of the internal combustion engine industry, quickly achieve mass production, and ultimately maintain costs similar to those of traditional internal combustion engines. They have advantages that other new energy technologies cannot match.

[0003] In the relevant technology, since the injection of hydrogen into the intake duct is likely to cause abnormal combustion such as backfire, in the future trend, all OEMs and nozzle suppliers tend to adopt medium and low pressure direct injection hydrogen nozzles. However, since hydrogen itself is a gaseous fuel with no lubrication ability, long-term operation will cause nozzle wear and even quality problems such as long-term injection of the injector. In addition, due to the limitations of the current nozzle processing technology capabilities, the leakage of hydrogen nozzle samples currently developed on the market is generally large, resulting in poor injection consistency in each cylinder of the engine, large differences between engine cylinders, unstable engine operation, and in severe cases, abnormal combustion such as pre-ignition and misfire. There is room for improvement. Summary of the invention

[0004] 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 a hydrogen supply structure for an engine, which can reduce the hydrogen pressure, avoid hydrogen leakage and other problems, realize accurate control of the hydrogen supply opening, ensure the consistent reaction state of each cylinder, extend the service life of the engine, have a simple structure and low setting cost.

[0005] The hydrogen supply structure of the engine according to the embodiment of the present invention comprises: a hydrogen tank; an intake pipe, the inlet end of the intake pipe is connected to the hydrogen tank, and a pressure stabilizing chamber is provided in the intake pipe; a cylinder head, the cylinder head is provided with a hydrogen intake passage, the outlet end of the intake pipe is connected to the hydrogen intake passage, and the hydrogen intake passage is provided with a movable first throttle valve, and the first throttle valve is configured to be electromagnetically driven.

[0006] According to the hydrogen supply structure of the engine of the embodiment of the present invention, a pressure-stabilizing chamber is provided in the intake pipe, which can reduce the pressure of the hydrogen supplied by the hydrogen tank and avoid problems such as hydrogen leakage. In addition, a first throttle valve driven by an electromagnetic is provided in the hydrogen intake duct, which can achieve accurate control of the hydrogen supply opening, thereby ensuring that the reaction state of each cylinder is consistent, thereby extending the service life of the engine, achieving better use effect and a wider range of applications. At the same time, the electromagnetically driven first throttle valve has a simple structure and a low installation cost.

[0007] According to some embodiments of the present invention, the hydrogen supply structure of the engine further includes an electromagnetic drive component, at least a portion of the first throttle valve is a magnetic body, and the electromagnetic drive component is configured to drive the first throttle valve to move relative to the hydrogen intake passage when powered on.

[0008] According to some embodiments of the present invention, the hydrogen supply structure of the engine further includes an elastic return member, which is connected to the first throttle valve, the electromagnetic drive member is used to drive the first throttle valve to open the hydrogen intake passage, and the elastic return member is used to apply an elastic force to the first throttle valve to close the hydrogen intake passage.

[0009] According to some embodiments of the present invention, the hydrogen supply structure of the engine further includes a control module, which is electrically connected to the controller of the engine and is configured to control the electromagnetic drive component to be powered on or off according to a control signal of the controller.

[0010] According to the hydrogen supply structure of the engine of some embodiments of the present invention, the hydrogen intake passage and the first throttle valve are both installed in multiple and one-to-one correspondence, and each of the first throttle valves is independently configured with one of the electromagnetic drive components.

[0011] According to the hydrogen supply structure of the engine of some embodiments of the present invention, a pressure reducing valve is further provided in the air intake pipeline, and the pressure reducing valve is located upstream of the pressure stabilizing chamber.

[0012] According to the hydrogen supply structure of the engine of some embodiments of the present invention, the cylinder head is provided with a plurality of hydrogen inlet passages, the pressure stabilizing chamber is provided with an inlet port and a plurality of outlet ports, the inlet port is connected with the inlet end of the inlet pipeline, and the plurality of outlet ports are respectively connected with the plurality of hydrogen inlet passages in a one-to-one correspondence.

[0013] According to the hydrogen supply structure of the engine in some embodiments of the present invention, the plurality of gas outlets are spaced apart and distributed on the same side of the pressure stabilizing chamber.

[0014] The invention also provides a hydrogen supply method for an engine.

[0015] The hydrogen supply method for an engine according to an embodiment of the present invention is provided with the hydrogen supply structure for an engine as described in any one of the above items, and the hydrogen supply method comprises:

[0016] Get the running status of the engine;

[0017] generating a hydrogen control signal according to the operating state;

[0018] The electromagnetic driving member is controlled to be energized according to the hydrogen control signal to drive the first throttle valve to move relative to the hydrogen intake passage.

[0019] The present invention also provides a vehicle.

[0020] According to an embodiment of the present invention, the vehicle comprises the hydrogen supply structure of the engine as described above, the cylinder head is also provided with an air intake duct, the air intake duct is provided with a movable second throttle valve, and the radial dimension of the first throttle valve is smaller than the radial dimension of the second throttle valve.

[0021] The advantages of the hydrogen supply method of the engine, the vehicle and the hydrogen supply structure of the engine described above over the prior art are the same and will not be described in detail here.

[0022] 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

[0023] 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:

[0024] Figure 1 is an exploded view of a hydrogen supply structure of an engine according to an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a cylinder head according to an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a hydrogen intake duct, an air intake duct and an exhaust duct according to an embodiment of the present invention;

[0027] Figure 4 is a structural schematic diagram of an air intake pipeline according to an embodiment of the present invention;

[0028] Figure 5 is a schematic structural diagram of a pressure stabilizing chamber according to an embodiment of the present invention;

[0029] Figure 6 is a flow chart of a hydrogen supply method for an engine according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] Hydrogen tank 1, air intake pipeline 2, pressure stabilizing chamber 21, air intake port 211, pressure reducing valve 22,

[0032] Cylinder head 3, hydrogen intake passage 31, sealing groove 311, first throttle valve 32, electromagnetic driving member 321, elastic reset member 322, air intake passage 33, second throttle valve 34, air intake rocker arm 341, exhaust valve 35, exhaust passage 36, spark plug mounting hole 37, spark plug 38. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Reference below Figure 1-Figure 6The hydrogen supply structure of the engine according to the embodiment of the present invention can reduce the hydrogen pressure, avoid hydrogen leakage and other problems, realize accurate control of the hydrogen supply opening, ensure the consistent reaction state of each cylinder, extend the service life of the engine, have a simple structure and low setting cost.

[0038] like Figure 1-Figure 6 As shown, the hydrogen supply structure of the engine according to the embodiment of the present invention includes: a hydrogen tank 1, an intake pipe 2 and a cylinder head 3.

[0039] The inlet end of the intake pipe 2 is connected to the hydrogen tank 1, a pressure stabilizing chamber 21 is provided in the intake pipe 2, a hydrogen intake passage 31 is provided in the cylinder head 3, and the outlet end of the intake pipe 2 is connected to the hydrogen intake passage 31. The hydrogen intake passage 31 is provided with a movable first throttle valve 32, and the first throttle valve 32 is configured to be electromagnetically driven.

[0040] Specifically, the hydrogen supply structure of the engine is provided with a hydrogen tank 1, which is used to store hydrogen. When the engine is running, the hydrogen tank 1 can transport the hydrogen required for the reaction to the cylinder, and the hydrogen supply structure of the engine is also provided with an intake pipe 2, and the intake pipe 2 is provided with an inlet end and an outlet end. The inlet end of the intake pipe 2 is connected to the hydrogen tank 1. When the engine is running, the hydrogen in the hydrogen tank 1 can enter the intake pipe 2 through the inlet end, and then be transported through the intake pipe 2. A pressure stabilizing chamber 21 is provided in the intake pipe 2. The hydrogen entering the intake pipe 2 through the inlet end needs to enter the pressure stabilizing chamber 21 during the transportation process. After the hydrogen pressure is stabilized by the pressure stabilizing chamber 21, it enters the intake pipe 2 for transportation.

[0041] Furthermore, the hydrogen supply structure of the engine is also provided with a cylinder head 3, and the cylinder head 3 is provided with a hydrogen intake duct 31. The outlet end of the intake pipe 2 is connected to the cylinder head 3, and then connected to the hydrogen intake duct 31. Therefore, the pressure stabilizing chamber 21 in the intake pipe 2 stabilizes the air pressure and then enters the hydrogen intake duct 31 through the outlet end of the intake pipe 2, and then enters the cylinder through the hydrogen intake duct 31 to react, so as to supply energy to the engine.

[0042] At the same time, the hydrogen intake passage 31 is provided with a first throttle valve 32, and the first throttle valve 32 is arranged to be movable relative to the hydrogen intake passage 31. The hydrogen intake passage 31 can be connected or closed through the first throttle valve 32, and the first throttle valve 32 is configured to be electromagnetically driven. When hydrogen needs to be transported into the cylinder, the first throttle valve 32 is electromagnetically driven to open the hydrogen intake passage 31. At this time, the hydrogen intake passage 31 is connected with the intake pipe 2. The hydrogen in the hydrogen tank 1 can enter the hydrogen intake passage 31 through the intake pipe 2 after the pressure in the pressure stabilizing chamber 21 stabilizes the air pressure, and then enters the cylinder to react with the air. When the cylinder stops operating, the first throttle valve 32 is electromagnetically driven to close the hydrogen intake passage 31. At this time, the hydrogen intake passage 31 is disconnected from the intake pipe 2.

[0043] Among them, by setting a pressure stabilizing chamber in the intake pipe 2, the hydrogen supply pressure at the hydrogen intake passage 31 can be reduced, so that the pressure of hydrogen when it is supplied to the cylinder from the hydrogen intake passage 31 is low, and a large amount of hydrogen leakage will not be caused. In addition, the first throttle valve 32 is driven by electromagnetics, so that during the supply process, the phase of the hydrogen supply valve can be changed by adjusting the opening and closing time of the control signal according to the load of the engine, and the lift of the first throttle valve 32 can be changed by adjusting the duty cycle of the control signal, and the amount of fuel entering the cylinder can be adjusted, so as to adjust the load of the engine in real time. Therefore, by setting a pressure stabilizing chamber and electromagnetic driving, the opening of the hydrogen intake passages 31 of multiple cylinders of the engine can be accurately controlled, so that the reaction state in each cylinder is consistent, the stability of the engine operation is guaranteed, and the service life of the engine is extended.

[0044] According to the hydrogen supply structure of the engine of the embodiment of the present invention, a pressure stabilizing chamber 21 is provided in the intake pipe 2, which can reduce the pressure of the hydrogen supplied by the hydrogen tank 1 and avoid problems such as hydrogen leakage. In addition, a first throttle valve 32 driven by an electromagnetic is provided in the hydrogen intake duct 31, which can realize accurate control of the hydrogen supply opening, thereby ensuring that the reaction state of each cylinder is consistent, thereby extending the service life of the engine, achieving better use effect and a wider range of applications. At the same time, the electromagnetically driven first throttle valve 32 has a simple structure and a low installation cost.

[0045] In some embodiments, the hydrogen supply structure of the engine further includes an electromagnetic driver 321 , at least a portion of the first throttle valve 32 is a magnetic body, and the electromagnetic driver 321 is configured to drive the first throttle valve 32 to move relative to the hydrogen intake passage 31 when powered on.

[0046] Specifically, Figure 1 As shown, the hydrogen supply structure of the engine is also provided with an electromagnetic driving component 321, and the electromagnetic driving component 321 can be set as an electromagnetic valve, etc. The electromagnetic driving component 321 is arranged at the end of the first throttle 32 away from the cylinder, and the first throttle 32 is partially set as a magnetic body. The electromagnetic driving component 321 is arranged to drive the first throttle 32 to move relative to the hydrogen intake passage 31 when powered on, that is, when the electromagnetic driving component 321 is powered on, an electromagnetic force is generated, and the first throttle 32 is partially set as a magnetic body. The electromagnetic driving component 321 after powering on will generate an electromagnetic force on the first throttle 32 to drive the first throttle 32 to move toward the electromagnetic driving component 321, and then make the first throttle 32 move relative to the hydrogen intake passage 31, that is, the first throttle 32 can be controlled by the power-on state of the electromagnetic driving component 321, and then the opening and closing of the hydrogen intake passage 31 can be controlled, so that the reaction state in each cylinder is consistent, the stability of the engine operation is ensured, and the service life of the engine is extended.

[0047] In some embodiments, the hydrogen supply structure of the engine also includes an elastic return member 322, which is connected to the first throttle valve 32, and the electromagnetic drive member 321 is used to drive the first throttle valve 32 to open the hydrogen intake duct 31, and the elastic return member 322 is used to apply an elastic force to the first throttle valve 32 to close the hydrogen intake duct 31.

[0048] Specifically, Figure 1 As shown, the hydrogen supply structure of the engine is also provided with an elastic reset member 322, and the elastic reset member 322 can be set as a spring or other structure. One end of the elastic reset member 322 is connected to the first throttle valve 32, and the other end is connected to the electromagnetic driving member 321. When the electromagnetic driving member 321 is energized to generate electromagnetic force, the first throttle valve 32 moves, and the elastic reset member 322 generates elastic force. After the electromagnetic driving member 321 is powered off and loses its magnetic force, the elastic force will act on the first throttle valve 32, thereby driving the first throttle valve 32 to return to its original position.

[0049] Furthermore, the first throttle valve 32 is configured so that when the electromagnetic driving component 321 is energized, the magnetic force can act on the first throttle valve 32, so that the first throttle valve 32 opens the hydrogen inlet duct 31, and then the hydrogen inlet duct 31 is connected with the intake pipe 2. The hydrogen in the hydrogen tank 1 can enter the hydrogen inlet duct 31 through the intake pipe 2 after the pressure is stabilized in the pressure stabilizing chamber 21, so as to enter the cylinder to react with the air. At this time, the elastic return component 322 generates an elastic force. When the electromagnetic driving component 321 is powered off, the electromagnetic driving component 321 loses its magnetic force, and the first throttle valve 32 closes the hydrogen inlet duct 31 under the elastic force of the elastic return component 322 to prevent hydrogen from leaking to the outside.

[0050] In some embodiments, the hydrogen supply structure of the engine further includes a control module, which is electrically connected to the controller of the engine, and the control module is configured to control the electromagnetic drive member 321 to be powered on or off according to a control signal of the controller.

[0051] Specifically, the hydrogen supply structure of the engine is also provided with a control module, and the control module can control the state of the electromagnetic driving component 321, that is, the control module can control the electromagnetic driving component 321 to be powered on or powered off. The engine is provided with a controller, and the control module is electrically connected to the controller. The controller can transmit a control signal to the control module, and then the control module can control the state of the electromagnetic driving component 321 in the form of PWM wave etc. according to the control signal transmitted by the controller, so as to realize precise control of the state of the electromagnetic driving component 321, and control through the control module can improve the response speed and achieve better use effect.

[0052] In some embodiments, the hydrogen intake passage 31 and the first throttle valve 32 are installed in multiple numbers and in one-to-one correspondence, and each first throttle valve 32 is independently configured with an electromagnetic driving component 321 .

[0053] Specifically, Figure 2-Figure 3 As shown, the hydrogen intake passage 31 can be set to be multiple, and the first throttle valve 32 can also be set to be multiple. The multiple hydrogen intake passages 31 are set in a one-to-one correspondence with the multiple first throttle valves 32, that is, the connection state of each hydrogen intake passage 31 with the intake passage can be adjusted through the first throttle valve 32. The engine can be provided with multiple cylinders, such as two cylinders, four cylinders and six cylinders, etc. The multiple cylinders can be respectively provided with hydrogen intake passages 31 to supply air to each cylinder to ensure the reliability of air supply, and each first throttle valve 32 is independently configured with an electromagnetic drive component 321, and the electromagnetic drive component 321 is used to drive the first throttle valve 32 to open or close, and then the hydrogen intake situation of each cylinder can be controlled by the electromagnetic drive component 321, so as to realize precise control of each cylinder, and avoid the failure of one of the first throttle valves 32, which will cause damage to the remaining first throttle valves 32, thereby extending the service life and reducing the maintenance cost.

[0054] In some embodiments, a pressure reducing valve 22 is further provided in the air intake pipeline 2 , and the pressure reducing valve 22 is located upstream of the pressure stabilizing chamber 21 .

[0055] Specifically, Figure 4 As shown, a pressure reducing valve 22 is also provided in the intake pipeline 2. The pressure reducing valve 22 can adjust the gas pressure of the hydrogen in the intake pipeline 2. The hydrogen bottle is connected to the intake pipeline 2. The hydrogen in the hydrogen bottle is high-pressure hydrogen. The high-pressure hydrogen entering the intake pipeline 2 through the inlet end needs to pass through the pressure reducing valve 22 during transportation. The pressure reducing valve 22 can reduce the gas pressure of the high-pressure hydrogen to the required gas pressure, and then enter the intake pipeline 2 for transportation. The pressure reducing valve 22 is located upstream of the pressure stabilizing chamber 21, that is, the hydrogen after the pressure reduction by the pressure reducing valve 22 can be passed into the pressure stabilizing chamber 21 through the intake pipe. After the hydrogen pressure is stabilized by the pressure stabilizing chamber 21, it enters the intake pipeline 2 for transportation, so that the state of the hydrogen entering the cylinder is stable, thereby ensuring the stability of engine operation and extending the service life of the engine.

[0056] In some embodiments, the cylinder head 3 is provided with a plurality of hydrogen inlet passages 31, the pressure stabilizing chamber 21 is provided with an inlet port 211 and a plurality of outlet ports, the inlet port 211 is connected to the inlet end of the intake pipe 2, and the plurality of outlet ports are respectively connected to the plurality of hydrogen inlet passages 31 in a one-to-one correspondence.

[0057] Specifically, Figure 2-Figure 3 as well as Figure 5As shown, the pressure stabilizing chamber 21 is arranged in the intake pipe, and the air inlet 211 is connected with the inlet end of the intake pipeline 2, so that the hydrogen after the pressure reduction by the pressure reducing valve 22 can enter the pressure stabilizing chamber 21 through the air inlet 211, and the hydrogen after the pressure stabilization by the pressure stabilizing chamber 21 can be transported to the cylinder for reaction, and the cylinder head 3 is provided with a plurality of hydrogen inlet passages 31, and the pressure stabilizing chamber 21 is provided with a plurality of air outlets, and the plurality of air outlets are respectively connected with the plurality of hydrogen inlet passages 31 in a one-to-one correspondence, that is, the hydrogen after the pressure stabilization by the pressure stabilizing chamber 21 can be discharged into the corresponding hydrogen inlet passages 31 through the plurality of air outlets, so as to supply hydrogen to each cylinder respectively, realize accurate air supply to each cylinder, and avoid the situation that one of the air outlets fails, resulting in the air outlet being unable to supply air, etc., thereby extending the service life and reducing the maintenance cost.

[0058] In some embodiments, a plurality of gas outlets are spaced apart and distributed on the same side of the pressure stabilization chamber 21 .

[0059] Specifically, Figure 5 As shown, the pressure stabilizing chamber 21 is provided with an air inlet 211 and an air outlet, the air inlet 211 is connected with the inlet end of the air intake pipe 2, and the air outlet is provided in plurality, and the plurality of air outlets are spaced apart and distributed on the same side of the pressure stabilizing chamber 21, and the plurality of air outlets are respectively connected with the plurality of hydrogen inlet passages 31 in a one-to-one correspondence, so that the connecting point between the air outlet and the hydrogen inlet passage 31 is located on the same side of the pressure stabilizing chamber 21, and this arrangement can make the connecting length of the air outlet and the hydrogen inlet passage 31 the same, so that the time for the hydrogen in the pressure stabilizing chamber 21 to enter each hydrogen inlet passage 31 is kept consistent, thereby ensuring the consistency of the operating state of each cylinder and improving the use effect of the engine, and a sealing groove 31 is provided at the connection between the hydrogen inlet passage 31 and the air outlet, so that the reliability of the connection between the hydrogen inlet passage 31 and the air outlet is higher, and hydrogen leakage and the like are avoided, which affects the safety of use.

[0060] The invention also provides a hydrogen supply method for an engine.

[0061] The hydrogen supply method for an engine according to an embodiment of the present invention is as follows: Figure 6 As shown, a hydrogen supply structure of an engine according to any one of the above items is provided, and a hydrogen supply method includes:

[0062] A100, obtain the running status of the engine;

[0063] A200, generating a hydrogen control signal according to the operating status;

[0064] A300 , controlling the electromagnetic driving component 321 to be energized according to the hydrogen control signal to drive the first throttle valve 32 to move relative to the hydrogen intake passage 31 .

[0065] Specifically, the engine is provided with a controller, which can obtain the current state of the engine and generate a hydrogen control signal according to the operating state of the engine. The controller is electrically connected to the control module and can transmit the hydrogen control signal to the control module. The control module can control the power-on state of the electromagnetic driving component 321 in the form of PWM waves according to the hydrogen control signal transmitted by the controller. When the engine is running, the control module controls the electromagnetic driving component 321 to be energized, thereby generating a magnetic force, so that the first throttle valve 32 moves relative to the hydrogen inlet passage 31 to open the hydrogen inlet passage 31, so that the hydrogen in the hydrogen tank 1 can enter the hydrogen inlet passage 31 after passing through the pressure reducing valve 22 and the pressure stabilizing chamber 21, and then enter the cylinder for reaction. When the engine stops running, the control module controls the electromagnetic driving component 321 to be powered off, and the elastic reset component 322 drives the first throttle valve 32 to reset through elastic force, thereby closing the hydrogen inlet passage 31 to avoid hydrogen leakage and improve safety in use.

[0066] Among them, the starting time of the hydrogen control signal can be set to a calibrable quantity and calibrated on the engine test bench according to the actual effect. By adjusting the duty cycle of the hydrogen control signal, the lift of the first throttle valve 32 can be adjusted. According to the load of the engine, the phase of the first throttle valve 32 can be changed by adjusting the opening and closing time of the hydrogen control signal. The lift of the first throttle valve 32 can be changed by adjusting the duty cycle of the hydrogen control signal. The amount of fuel entering the cylinder can be adjusted in real time, thereby adjusting the load of the engine in real time and improving the flexibility of use.

[0067] According to the hydrogen supply method for the engine of the embodiment of the present invention, a pressure stabilizing chamber 21 is provided in the intake pipe 2, which can reduce the pressure of the hydrogen supplied by the hydrogen tank 1 and avoid problems such as hydrogen leakage. In addition, a first throttle valve 32 driven by an electromagnetic is provided in the hydrogen intake duct 31, which can realize accurate control of the hydrogen supply opening, thereby ensuring that the reaction state of each cylinder is consistent, thereby extending the service life of the engine, achieving better use effect and a wider range of applications. At the same time, the electromagnetically driven first throttle valve 32 has a simple structure and a low installation cost.

[0068] The present invention also provides a vehicle.

[0069] According to the vehicle of the embodiment of the present invention, the hydrogen supply structure of the engine includes any one of the above items, the cylinder head 3 is also provided with an air intake duct 33, the air intake duct 33 is provided with a movable second throttle valve 34, and the radial dimension of the first throttle valve 32 is smaller than the radial dimension of the second throttle valve 34.

[0070] Specifically, Figure 1-Figure 2As shown, the cylinder head 3 is also provided with an air intake duct 33, which can be used to introduce air into the cylinder so that hydrogen and air react in the cylinder to supply energy to the engine. The air intake duct 33 is provided with a second throttle valve 34, and the second throttle valve 34 is connected to an air intake rocker arm 341. The air intake rocker arm 341 cooperates with the second throttle valve 34, so that the second throttle valve 34 can move relative to the air intake duct 33, so that the air intake duct 33 can selectively introduce air, which has a better use effect, and the first throttle valve 32 is The radial dimension is smaller than the radial dimension of the second throttle valve 34, and the radial dimension of the first throttle valve 32 is set to be smaller, so that the first throttle valve 32 is light, and the electromagnetic force required for the first throttle valve 32 to move relative to the hydrogen intake duct 31 is small, which can reduce the number of electromagnetic coil turns required for the electromagnetic drive component 321, reduce the manufacturing cost of the electromagnetic drive component 321, and save manufacturing costs. The cylinder head 3 is also provided with a spark plug 38, a spark plug mounting hole 37, an exhaust valve 35 and an exhaust duct 36, etc., to cooperate with the hydrogen supply structure of the engine to meet the use requirements.

[0071] According to the vehicle of the embodiment of the present invention, a pressure-stabilizing chamber 21 is provided in the intake pipe 2, which can reduce the pressure of the hydrogen supplied by the hydrogen tank 1 and avoid problems such as hydrogen leakage. In addition, a first throttle valve 32 driven by an electromagnetic is provided in the hydrogen intake duct 31, which can achieve accurate control of the hydrogen supply opening, thereby ensuring that the reaction state of each cylinder is consistent, thereby extending the service life of the engine, achieving better use effect and a wider range of applications. At the same time, the electromagnetically driven first throttle valve 32 has a simple structure and a low installation cost.

[0072] 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.

[0073] 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. A hydrogen supply structure for an engine, characterized in that: include: Hydrogen tank; An air intake pipeline, the inlet end of which is connected to the hydrogen tank, and a pressure stabilizing chamber is provided in the air intake pipeline; The cylinder head is provided with a hydrogen intake passage, the outlet end of the intake pipeline is connected to the hydrogen intake passage, the hydrogen intake passage is provided with a movable first throttle valve, and the first throttle valve is configured to be electromagnetically driven.

2. The hydrogen supply structure of the engine according to claim 1, characterized in that: It also includes an electromagnetic driving component, at least a part of the first throttle valve is a magnetic body, and the electromagnetic driving component is configured to drive the first throttle valve to move relative to the hydrogen intake passage when powered on.

3. The hydrogen supply structure of the engine according to claim 2, characterized in that: It also includes an elastic return member, which is connected to the first throttle valve. The electromagnetic drive member is used to drive the first throttle valve to open the hydrogen intake passage. The elastic return member is used to apply an elastic force to the first throttle valve to close the hydrogen intake passage.

4. The hydrogen supply structure of the engine according to claim 2 or 3, characterized in that: It also includes a control module, which is electrically connected to a controller of the engine and is configured to control the electromagnetic drive member to be powered on or off according to a control signal from the controller.

5. The hydrogen supply structure of the engine according to claim 2, characterized in that: The hydrogen intake passage and the first throttle valve are both installed in multiple numbers and in one-to-one correspondence, and each of the first throttle valves is independently configured with one electromagnetic driving component.

6. The hydrogen supply structure of the engine according to claim 1, characterized in that: A pressure reducing valve is also provided in the air intake pipeline, and the pressure reducing valve is located upstream of the pressure stabilizing chamber.

7. The hydrogen supply structure of the engine according to claim 1, characterized in that: The cylinder head is provided with a plurality of hydrogen inlet passages, the pressure stabilizing chamber is provided with an inlet port and a plurality of outlet ports, the inlet port is connected with the inlet end of the inlet pipeline, and the plurality of outlet ports are respectively connected with the plurality of hydrogen inlet passages in a one-to-one correspondence.

8. The hydrogen supply structure of the engine according to claim 7, characterized in that: The plurality of air outlets are spaced apart and distributed on the same side of the pressure stabilizing chamber.

9. A method for supplying hydrogen to an engine, characterized in that: A hydrogen supply structure for an engine according to any one of claims 1 to 8 is provided, and the hydrogen supply method comprises: Get the running status of the engine; generating a hydrogen control signal according to the operating state; The electromagnetic driving member is controlled to be energized according to the hydrogen control signal to drive the first throttle valve to move relative to the hydrogen intake passage.

10. A vehicle, characterized in that: A hydrogen supply structure for an engine comprising any one of claims 1-8, wherein the cylinder head is further provided with an air intake duct, the air intake duct is provided with a movable second throttle valve, and the radial dimension of the first throttle valve is smaller than the radial dimension of the second throttle valve.

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