CN214836760U - Fuel mixing system for preventing detonation of hydrogen internal combustion engine - Google Patents
Fuel mixing system for preventing detonation of hydrogen internal combustion engine Download PDFInfo
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- CN214836760U CN214836760U CN202023349909.8U CN202023349909U CN214836760U CN 214836760 U CN214836760 U CN 214836760U CN 202023349909 U CN202023349909 U CN 202023349909U CN 214836760 U CN214836760 U CN 214836760U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a fuel hybrid system for preventing hydrogen internal-combustion engine knocks, including cylinder, hydrogen air intake system, EGR exhaust gas recirculation system and ECU control system, hydrogen air intake system is including the hydrogen gas rail of distribution hydrogen air input, the hydrogen gas rail is connected with the hydrogen gas jet-propelled pipe, the hydrogen gas jet-propelled pipe is connected with the cylinder air inlet, be connected with the hydrogen injection valve on the hydrogen gas rail, EGR exhaust gas recirculation system includes exhaust gas recirculation pipeline, EGR cooler and EGR automatically controlled valve, exhaust gas recirculation pipeline's middle part is located to the EGR cooler, EGR automatically controlled valve locates exhaust gas recirculation pipeline and gets into cylinder air inlet department, EGR cooler and EGR control valve are connected with ECU control system. The exhaust gas in the EGR exhaust gas circulation system circulates into the cylinder, so that the inert gas in the cylinder is increased, the combustion speed of hydrogen is reduced, the detonation phenomenon is effectively avoided, and meanwhile, NO in tail gas can be removedXAnd CO generated by the combustion of a small amount of engine oil.
Description
Technical Field
The utility model relates to a hydrogen internal-combustion engine technical field, in particular to a fuel hybrid system for preventing hydrogen internal-combustion engine knocks.
Background
With the rapid development of economy and society, the harmful emissions of vehicles pose serious hazards to the environment. Hydrogen is a renewable energy source and is used as an alternative fuel of an automobile engine, and the only harmful gas emitted is NO. However, the combustion diffusion speed of hydrogen is too fast, the probability of forming detonation combustion is much higher than that of gasoline, the detonation problem is one of the most important factors to be considered for designing a hydrogen fuel engine, and the detonation combustion of the engine is very easy to cause due to the wide combustion range and the high diffusion speed of hydrogen, which is one of the main problems encountered in the development process of a hydrogen-burning engine. 1, knocking of a spark-ignition engine and knocking of a knock model engine are abnormal combustion phenomena which are mainly characterized in that in-cylinder pressure fluctuates in high frequency and large amplitude, and the vibration of the engine is intensified. If the detonation velocity is high and there is enough of the gas in the flame to detonate, the high pressure shock pulses can cause parts of the engine or the engine as a whole to vibrate. The accumulation of knocking or severe knocking can cause serious accidents of damage to pistons, cylinder covers, valves, piston rings and the like of the engine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem, a fuel mixing system for preventing the knocking of the hydrogen internal combustion engine comprises a cylinder, a hydrogen gas inlet system, an EGR waste gas recirculation system and an ECU control system, wherein the hydrogen gas inlet system and the EGR waste gas recirculation system are connected with the ECU control system;
the hydrogen gas inlet system comprises a hydrogen gas rail for distributing hydrogen gas inlet amount, the hydrogen gas rail is connected with a hydrogen gas injection pipe, the hydrogen gas injection pipe is connected with a gas inlet of the cylinder, a hydrogen gas injection valve is connected on the hydrogen gas rail, and the hydrogen gas injection valve is connected with the ECU control system;
the EGR exhaust gas recirculation system comprises an exhaust gas circulation pipeline, an EGR cooler and an EGR electric control valve, wherein the EGR cooler is arranged in the middle of the exhaust gas circulation pipeline, the EGR electric control valve is arranged at an air inlet of the exhaust gas circulation pipeline, which enters an air cylinder, and the EGR cooler and the EGR control valve are connected with the ECU control system;
an air inlet of the air cylinder is connected with an air inlet pipeline, an air inlet control valve is arranged on the air inlet pipeline, and the air inlet control valve is connected with an ECU control system;
and the ECU control system is also connected with an ignition controller.
Furthermore, the exhaust gas circulation pipeline comprises a first pipeline connected with an exhaust port of the cylinder, part of exhaust gas of the first pipeline enters the EGR cooler through a second pipeline, the rest of exhaust gas is discharged through the exhaust port of the first pipeline, the cooled exhaust gas entering the EGR cooler enters an air inlet of the cylinder through a third pipeline, and the EGR control valve is arranged on the third pipeline.
Further, an oxygen sensor is arranged on the first pipeline and connected with the ECU control system.
Furthermore, the hydrogen gas injection pipe is in a bent pipe shape, the end part of the hydrogen gas injection pipe is aligned with the air valve throat of the cylinder, and hydrogen gas is directly injected into the cylinder by the ejection of the hydrogen gas injection pipe after the hydrogen gas injection valve is opened to realize direct injection in the cylinder.
Furthermore, a drain pipe is arranged on the EGR cooler, and a drain valve is arranged on the drain pipe.
Further, the ignition controller includes a spark plug and an ignition coil connected to the spark plug.
The utility model has the advantages that:
1. the exhaust gas in the EGR exhaust gas circulation system circulates into the cylinder, so that the inert gas in the cylinder is increased, the combustion speed of hydrogen is reduced, the detonation phenomenon is effectively avoided, and meanwhile, NO in tail gas can be removedXAnd CO generated by combustion of a small amount of engine oil;
2. collecting oxygen content in the waste gas through an ECU control system, and automatically controlling the flow of the hydrogen, the air and the waste gas by controlling the opening degrees of a hydrogen injection valve, an air inlet control valve and an EGR control valve;
3. the hydrogen gas inlet rail, the embedded hydrogen gas injection pipe and the hydrogen gas injection valve are arranged, so that direct injection in the hydrogen gas inlet cylinder is realized, and the hydrogen gas inlet amount is automatically controlled;
4. the water discharge pipe is arranged on the EGR cooler according to the hydrogen characteristic, so that the phenomenon that water vapor returns to the air cylinder is avoided, condensed water can be collected and utilized, and the resource utilization rate is improved
Drawings
FIG. 1 is a schematic diagram of a fuel mixing system for preventing detonation of a hydrogen internal combustion engine in accordance with the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic diagram of the ECU control system of the present invention.
In the figure: 1-a cylinder; 201-hydrogen gas rail; 202-hydrogen gas sparge pipes; 203-hydrogen gas injection valve; 301-an EGR cooler; 302-EGR electronically controlled valve; 303-a first conduit; 304-a second conduit pipe; 305-a third conduit; 306-an oxygen sensor; 307-a drain pipe; 308-a drain valve; 4-an ECU control system; 5-an air intake duct; 6-air inlet control valve; 7-a spark plug; 8-ignition coil.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1 to 3, to achieve the above object, the present invention provides a fuel mixing system for preventing knocking of a hydrogen internal combustion engine, including a cylinder 1, a hydrogen intake system, an EGR exhaust gas recirculation system and an ECU control system 4, wherein the hydrogen intake system and the EGR exhaust gas recirculation system are connected to the ECU control system;
the hydrogen gas inlet system comprises a hydrogen gas rail 201 for distributing hydrogen gas inflow, the hydrogen gas rail 201 is connected with a hydrogen gas injection pipe 202, the hydrogen gas injection pipe 202 is connected with a gas inlet of the cylinder, a hydrogen gas injection valve 203 is connected on the hydrogen gas rail 201, the hydrogen gas injection valve is connected with an ECU control system to control the hydrogen gas inflow, the hydrogen gas injection pipe 202 is in a bent pipe shape, the end part of the hydrogen gas injection pipe 202 is aligned with a throat of the cylinder valve, and hydrogen gas is directly injected into the cylinder 1 after the hydrogen gas injection valve 203 is opened by the hydrogen gas injection pipe 202;
the EGR exhaust gas recirculation system comprises an exhaust gas circulation pipeline, an EGR cooler 301 and an EGR electric control valve 302, wherein the exhaust gas circulation pipeline comprises a first pipeline 303 connected with an exhaust port of a cylinder, an oxygen sensor 306 is arranged on the first pipeline 303, part of exhaust gas of the first pipeline 303 enters the EGR cooler 301 through a second pipeline 304, the rest of exhaust gas is discharged through the exhaust port of the first pipeline 303, the cooled exhaust gas entering the EGR cooler 301 enters an air inlet of the cylinder through a third pipeline 305, the EGR control valve 302 is arranged at a position, close to the air inlet of the cylinder, of the third pipeline 305, a drain pipe 307 is arranged on the EGR cooler 301, a drain valve 308 is arranged on the drain pipe 307, and the EGR cooler 301, the EGR control valve 302 and the oxygen sensor 306 are connected with the ECU control system 4;
an air inlet pipe 5 is connected with an air inlet of the air cylinder 1, an air inlet control valve 6 is arranged on the air inlet pipe 5, and the air inlet control valve 6 is connected with the ECU control system 4;
the ECU control system 4 is also connected to an ignition controller comprising a spark plug 7 and an ignition coil 8 connected to the spark plug.
When the hydrogen internal combustion engine works, the piston moves upwards to compress air to a certain degree, the hydrogen injection valve and the hydrogen intake cylinder realize direct injection, the ECU controller controls the ignition of a spark plug, the hydrogen and the air are combusted to generate water, NOx and other exhaust gas cylinder exhaust ports enter a first pipeline, an oxygen sensor on the first pipeline collects oxygen content data and transmits the oxygen content data to the ECU control system, the ECU control system automatically controls the flow of the hydrogen, the air and the exhaust gas through controlling the hydrogen injection valve, the air intake control valve and the opening degree of the EGR control valve, partial exhaust gas in the first pipeline enters the EGR cooler, water vapor is cooled and recovered and then enters the cylinder through a third pipeline, inert gas in the cylinder is added, the combustion speed of the hydrogen is reduced, and the occurrence of a knocking phenomenon is effectively avoided.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.
Claims (6)
1. A fuel mixing system for preventing knocking of a hydrogen internal combustion engine is characterized by comprising a cylinder, a hydrogen gas inlet system, an EGR (exhaust gas recirculation) system and an ECU (electronic control unit) control system, wherein the hydrogen gas inlet system and the EGR system are connected with the ECU control system;
the hydrogen gas inlet system comprises a hydrogen gas rail for distributing hydrogen gas inlet amount, the hydrogen gas rail is connected with a hydrogen gas injection pipe, the hydrogen gas injection pipe is connected with a gas inlet of the cylinder, a hydrogen gas injection valve is connected on the hydrogen gas rail, and the hydrogen gas injection valve is connected with the ECU control system;
the EGR exhaust gas recirculation system comprises an exhaust gas circulation pipeline, an EGR cooler and an EGR electric control valve, wherein the EGR cooler is arranged in the middle of the exhaust gas circulation pipeline, the EGR electric control valve is arranged at an air inlet of the exhaust gas circulation pipeline, which enters an air cylinder, and the EGR cooler and the EGR control valve are connected with the ECU control system;
an air inlet of the air cylinder is connected with an air inlet pipeline, an air inlet control valve is arranged on the air inlet pipeline, and the air inlet control valve is connected with an ECU control system;
and the ECU control system is also connected with an ignition controller.
2. A fuel mixing system for preventing knocking of a hydrogen internal combustion engine according to claim 1, wherein said exhaust gas circulation line includes a first line connected to an exhaust port of the cylinder, a part of the exhaust gas of said first line is introduced into the EGR cooler through a second line, the remaining exhaust gas is discharged through an exhaust port of the first line, the exhaust gas cooled in the EGR cooler is introduced into the cylinder intake port through a third line, and said EGR control valve is provided in the third line.
3. A fuel mixing system for preventing knocking of a hydrogen internal combustion engine according to claim 2, wherein an oxygen sensor is provided on said first pipe, and said oxygen sensor is connected to an ECU control system.
4. The fuel mixing system for preventing knocking of a hydrogen internal combustion engine as claimed in claim 1, wherein the hydrogen gas injection pipe is shaped as a bent pipe, the end of the hydrogen gas injection pipe is aligned with a throat of a cylinder valve, and hydrogen gas is directly injected into the cylinder through the hydrogen gas injection pipe after the hydrogen gas injection pipe is opened.
5. A fuel mixing system for preventing knocking of a hydrogen internal combustion engine according to claim 1, wherein said EGR cooler is provided with a drain pipe, and said drain pipe is provided with a drain valve.
6. The fuel-mixing system for preventing knocking of a hydrogen internal combustion engine according to claim 1, wherein said ignition controller includes a spark plug and an ignition coil connected to the spark plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023349909.8U CN214836760U (en) | 2020-12-31 | 2020-12-31 | Fuel mixing system for preventing detonation of hydrogen internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023349909.8U CN214836760U (en) | 2020-12-31 | 2020-12-31 | Fuel mixing system for preventing detonation of hydrogen internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214836760U true CN214836760U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023349909.8U Active CN214836760U (en) | 2020-12-31 | 2020-12-31 | Fuel mixing system for preventing detonation of hydrogen internal combustion engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN214836760U (en) |
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- 2020-12-31 CN CN202023349909.8U patent/CN214836760U/en active Active
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