Hydrogen internal combustion engine supercharging device based on hydrogen flow detection

Abstract

The utility model relates to a hydrogen internal combustion engine supercharging device based on hydrogen flow detection, which comprises an air pipe, a hydrogen pipe, a high-pressure hydrogen storage tank, a turbine, a gas compressor and a control unit, the air pipe is communicated with the hydrogen pipe, the device further comprises a pressure sensor and a hydrogen pump, and the control unit is respectively in communication connection with the pressure sensor and the hydrogen pump. The high-pressure hydrogen storage tank, the pressure sensor, the hydrogen pump and the turbine are all installed on the hydrogen pipe, the gas compressor is installed on the air pipe, and the turbine is connected with the gas compressor. The pressure sensor and the hydrogen pump are arranged, the control unit detects hydrogen pressure according to the pressure sensor, when the pressure is detected to be insufficient, the control unit controls the hydrogen pump to start pressurization to enable the turbine to rotate, and therefore the gas compressor is driven to rotate, pressurization is achieved, and under the condition that the hydrogen pressure is insufficient, air pressurization can be automatically achieved; and the stability is higher.

Description

Technical Field

[0001] This utility model relates to the field of turbocharging device technology, and in particular to a hydrogen internal combustion engine turbocharging device based on hydrogen flow detection. Background Technology

[0002] Hydrogen, as a fuel, possesses unique physical and chemical properties, such as high combustion speed and a wide flammability limit. This necessitates that the control system of a hydrogen internal combustion engine be able to precisely regulate the hydrogen supply and combustion process to avoid problems such as backfire and knocking. Existing technologies include specific control strategies for hydrogen fuel cell engines, such as lean combustion technology and rapid mixing technology, to reduce nitrogen oxide emissions and improve combustion efficiency.

[0003] Chinese patent application CN112290058A discloses a hydrogen-driven turbocharger for a fuel cell engine, comprising a turbine, a compressor, a connecting shaft, a pressure regulator, and an air compressor. The turbine and compressor are connected via the connecting shaft. The turbine outlet is connected to the fuel cell stack via a hydrogen pipeline, and the inlet is connected to a compressed hydrogen storage container via a hydrogen pipeline. The pressure regulator is located on the hydrogen pipeline connecting the turbine outlet and the fuel cell stack. The compressor outlet is connected to the air compressor and the fuel cell stack sequentially via an air pipeline, and the outlet is connected to an air filter via an air pipeline. Although this patent achieves coaxial rotation of the compressor and turbine, it does not consider the situation where hydrogen pressure is insufficient to drive the turbine.

[0004] Therefore, providing a booster device that can automatically increase pressure is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a hydrogen internal combustion engine turbocharger based on hydrogen flow detection.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] According to one aspect of this utility model, a hydrogen internal combustion engine turbocharger based on hydrogen flow detection is provided, comprising an air pipe, a hydrogen pipe, a high-pressure hydrogen storage tank, a turbine, a compressor, and a control unit. The air pipe and the hydrogen pipe are connected. The device also includes a pressure sensor and a hydrogen pump. The control unit is communicatively connected to both the pressure sensor and the hydrogen pump. The high-pressure hydrogen storage tank, the pressure sensor, the hydrogen pump, and the turbine are all mounted on the hydrogen pipe. The compressor is mounted on the air pipe. The turbine and the compressor are connected.

[0008] As a preferred technical solution, the turbine and the compressor are connected by gear transmission.

[0009] As a preferred technical solution, the gear transmission includes a parallel shaft gear transmission.

[0010] As a preferred technical solution, the gear transmission also includes intersecting shaft gear transmission.

[0011] As a preferred technical solution, the device further includes a combustion chamber, and the air pipe is connected to the combustion chamber.

[0012] As a preferred technical solution, the device further includes a pressure regulator, which is installed on the hydrogen pipeline.

[0013] As a preferred technical solution, the pressure regulator is installed on the outlet side of the turbine.

[0014] As a preferred technical solution, the control unit and the pressure regulator are communicatively connected.

[0015] As a preferred technical solution, the hydrogen pump is a hydrogen pump that employs a hydrogen booster pump.

[0016] As a preferred technical solution, the hydrogen pump is a hydrogen pump that employs a pneumatic hydrogen booster pump, an electric hydraulic hydrogen booster pump, a diaphragm hydrogen booster pump, or a piston hydrogen booster pump.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model is equipped with a pressure sensor and a hydrogen pump. The control unit detects the hydrogen pressure based on the pressure sensor. When the pressure is insufficient, it controls the hydrogen pump to start pressurization to make the turbine rotate, thereby driving the compressor to rotate and achieve pressurization. This utility model can automatically pressurize the air when the hydrogen pressure is insufficient, and has higher stability.

[0019] 2. The turbine and compressor of this utility model are connected by gear transmission, which makes the installation position of the turbine and compressor more flexible and the installation accuracy less.

[0020] 3. This utility model adopts parallel shaft gear transmission or intersecting shaft gear transmission, which can realize the transmission between any two axes in space such as parallel shafts, intersecting shafts, and staggered shafts, and can adapt to complex mechanical structures and transmission requirements.

[0021] 4. The hydrogen pressure regulating pump of this utility model can adjust the pressure of the low-pressure driving gas, and can achieve stepless adjustment of the pressure of the pressurized hydrogen. The pressure can be flexibly adjusted according to actual needs. When the hydrogen pressure in the circuit drops, it will automatically start to supplement the pressure, so that the circuit pressure is stable and maintained at the set value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] 1. High-pressure hydrogen storage tank; 2. Pressure sensor; 3. Hydrogen pump; 4. Turbine; 5. Control unit; 6. Pressure regulator; 7. Compressor; 8. Combustion chamber. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0025] Traditional internal combustion engine control technologies are relatively mature, including fuel injection control, ignition control, and exhaust gas recirculation (EGR) control. These technologies provide a basic framework and approach for the control of hydrogen internal combustion engines. This invention improves combustion efficiency by controlling hydrogen flow through a turbocharger. Controlling combustion effectively ensures power output and greatly avoids power loss caused by the control system.

[0026] This invention provides a hydrogen internal combustion engine booster device based on hydrogen flow detection. The device incorporates a pressure sensor and a hydrogen pump. The control unit detects hydrogen pressure via the pressure sensor; when insufficient pressure is detected, it activates the hydrogen pump to boost pressure, causing the turbine to rotate, which in turn drives the compressor, achieving boosting. This invention can automatically boost air pressure even when hydrogen pressure is insufficient, resulting in higher stability. The turbine and compressor are connected by gear transmission, allowing for more flexible installation positions and lower installation precision. The invention employs parallel shaft gear transmission or intersecting shaft gear transmission, enabling transmission between any two spatial shafts (parallel, intersecting, or staggered), adapting to complex mechanical structures and transmission requirements. The hydrogen pressure regulating pump in this invention can adjust the pressure of the low-pressure drive gas, achieving stepless adjustment of the boosted hydrogen pressure, allowing for flexible pressure adjustment according to actual needs. When the hydrogen pressure in the circuit drops, it automatically activates to supplement pressure, stabilizing the circuit pressure and maintaining it at the set value.

[0027] Example 1

[0028] like Figure 1As shown, a hydrogen internal combustion engine turbocharger based on hydrogen flow detection includes an air pipe, a hydrogen pipe, a high-pressure hydrogen storage tank 1, a turbine 4, a compressor 7, and a control unit 5. The air pipe and the hydrogen pipe are connected. The device also includes a pressure sensor 2 and a hydrogen pump 3. The control unit 5 is communicatively connected to the pressure sensor 2 and the hydrogen pump 3, respectively. The high-pressure hydrogen storage tank 1, the pressure sensor 2, the hydrogen pump 3, and the turbine 4 are all installed on the hydrogen pipe. The compressor 7 is installed on the air pipe. The turbine 4 and the compressor 7 are connected.

[0029] In this embodiment, the control unit 5 is an ECU. The working process of this utility model is as follows: First, the control unit 5 monitors the engine's operating parameters in real time, such as speed, load, and intake pressure. Based on the operating parameters, the control unit 5 intelligently adjusts the output power of the hydrogen pump 3, the opening of the flow control valve, and the ignition timing to optimize engine performance. At this time, the actual opening of the hydrogen pump 3 should be larger than the calculated opening. At this time, the high-pressure hydrogen in the high-pressure hydrogen storage tank 1 passes through the turbine 4, causing the impeller of the turbine 4 to rotate. Since the turbine 4 and the compressor 7 are connected by gear transmission, the compressor 7 works. At this time, air flows from the air pipe and is pressurized by the compressor 7. The high-pressure hydrogen passing through the turbine 4 is further regulated by the pressure regulator 6 and mixed with the pressurized air in the air pipe. Finally, it is burned in the combustion chamber 8 and discharged. The back pressure generated during the entire combustion process affects the pressurization process and is sensed by the pressure sensor 2 and fed back to the control unit 5. The control unit 5 controls the start or stop of the hydrogen pump 3 and adjusts the pressure of the high-pressure hydrogen so that it can make the turbine 4 rotate. The control unit 5 dynamically adjusts the entire process.

[0030] The turbine 4 and the compressor 7 are connected by a gear drive. The gear drive includes parallel shaft gear drive and intersecting shaft gear drive.

[0031] In this embodiment, parallel shaft gear transmission and intersecting shaft gear transmission are achieved through the mutual cooperation of bevel gears, spur gears and transmission shafts.

[0032] The device also includes a combustion chamber 8, and the air pipe is connected to the combustion chamber 8. Air and hydrogen are mixed in the air pipe before entering the combustion chamber, resulting in more complete combustion.

[0033] The device also includes a pressure regulator 6, which is mounted on the hydrogen pipeline. The pressure regulator 6 is installed on the outlet side of the turbine 4. The control unit 5 is communicatively connected to the pressure regulator 6. When the pressure is greater than 40 bar, the pressure regulator 6 adjusts the pressure to maintain it between 30 and 40 bar.

[0034] Hydrogen gas from the high-pressure hydrogen storage tank 1 passes sequentially through a pressure sensor 2, a hydrogen pump 3, a turbine 4, a pressure regulator 6, and a combustion chamber 8. The hydrogen gas causes the turbine 4 to rotate, which in turn rotates the compressor 7. The control unit 5 controls the start or stop of the hydrogen pump 3 based on the pressure sensor 2. The hydrogen pump starts when the pressure sensor detects a pressure below 30 bar.

[0035] The hydrogen pump 3 is a hydrogen pump that uses a hydrogen booster pump.

[0036] The hydrogen pump 3 is a pneumatic hydrogen booster pump, an electro-hydraulic hydrogen booster pump, a diaphragm hydrogen booster pump, or a piston hydrogen booster pump. The main function of the hydrogen pump 3 is to increase the pressure of hydrogen, raising it from a lower pressure to the required higher pressure to meet the demand for high-pressure hydrogen.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A hydrogen internal combustion engine supercharging device based on hydrogen flow detection, comprising an air pipe, a hydrogen pipe, a high-pressure hydrogen storage tank (1), a turbine (4), a compressor (7) and a control unit (5), the air pipe and the hydrogen pipe being connected, characterized in that, The device further comprises a pressure sensor (2) and a hydrogen pump (3), the control unit (5) is in communication connection with the pressure sensor (2) and the hydrogen pump (3) respectively, the high-pressure hydrogen storage tank (1), the pressure sensor (2), the hydrogen pump (3) and the turbine (4) are all installed on a hydrogen pipe, the air compressor (7) is installed on an air pipe, and the turbine (4) and the air compressor (7) are connected.

2. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 1, characterized by, The turbine (4) and the air compressor (7) are connected through a gear transmission.

3. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 2, characterized by, The gear transmission comprises a parallel-shaft gear transmission.

4. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 2, characterized by, The gear transmission further comprises an intersecting-shaft gear transmission.

5. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 1, characterized by, The device further comprises a combustion chamber (8), and the air pipe and the combustion chamber (8) are communicated.

6. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 1, characterized by, The device further comprises a pressure regulator (6), and the pressure regulator (6) is installed on the hydrogen pipe.

7. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 6, characterized by, The pressure regulator (6) is installed on the outlet side of the turbine (4).

8. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 6, characterized by, The control unit (5) and the pressure regulator (6) are in communication connection.

9. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 1, characterized by, The hydrogen pump (3) is a hydrogen pump (3) using a hydrogen booster pump.

10. The hydrogen internal combustion engine supercharger device based on hydrogen flow detection according to claim 9, characterized by, The hydrogen pump (3) is a hydrogen pump (3) using a pneumatic hydrogen booster pump, an electric liquid-driven hydrogen booster pump, a diaphragm-type hydrogen booster pump or a piston-type hydrogen booster pump.

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