CN116696566A - Hydrogen supply system and method - Google Patents
Hydrogen supply system and method Download PDFInfo
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- CN116696566A CN116696566A CN202310633796.3A CN202310633796A CN116696566A CN 116696566 A CN116696566 A CN 116696566A CN 202310633796 A CN202310633796 A CN 202310633796A CN 116696566 A CN116696566 A CN 116696566A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 239000001257 hydrogen Substances 0.000 title claims abstract description 177
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 177
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 131
- 239000007924 injection Substances 0.000 claims abstract description 131
- 230000001105 regulatory effect Effects 0.000 claims description 75
- 238000001514 detection method Methods 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 6
- 230000001603 reducing effect Effects 0.000 description 13
- 239000000446 fuel Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/021—Control of components of the fuel supply system
- F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/026—Measuring or estimating parameters related to the fuel supply system
- F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
-
- 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
Abstract
The application relates to a hydrogen supply system and a method. The hydrogen gas supply method includes: providing an injection module for supplying hydrogen to the engine; providing a storage module, wherein the storage module supplies hydrogen to the injection module; acquiring target pressure and current pressure in the injection module, wherein the target pressure is determined according to the current working condition of the engine; the method comprises the steps of determining the hydrogen supply quantity of the storage module to the injection module according to target pressure and current pressure, wherein the hydrogen supply quantity is the input hydrogen quantity of the injection module, detecting the current pressure in the injection module, and adjusting the hydrogen supply quantity by combining the target pressure corresponding to different working conditions with the current pressure so as to realize closed-loop control of hydrogen supply.
Description
Technical Field
The application relates to the technical field of engines, in particular to a hydrogen supply system and a hydrogen supply method.
Background
The hydrogen is taken as a renewable, clean and efficient secondary energy source, has the advantages of rich resources, wide sources, high combustion heat value, cleanness, no pollution and the like, and becomes a realistic way for realizing deep decarburization in a plurality of fields such as power-assisted energy, traffic, petrochemical industry and the like. The hydrogen fuel engine can be used as the existing engine supply chain system, so that the industrial investment of the traditional automobile internal combustion engine enterprises can be reduced, the hydrogen fuel engine is one of important ways for pushing commercial vehicles to low carbonization and zero carbonization, and the hydrogen internal combustion engine can be rapidly developed and applied in the field of commercial vehicles and is also an important field for applying innovative technology in the future. The industrialized development of the hydrogen internal combustion engine depends on the traditional internal combustion engine, and a plurality of shared part systems such as traditional 3C parts exist, but the actual quoted development still needs to carry out a great deal of special technical development.
The development of a hydrogen supply system is one of core subsystems of a hydrogen fuel engine, the supply system is required to provide hydrogen with stable flow and pressure for the hydrogen fuel engine in order to ensure more stable and efficient combustion of the engine, and the safety and the applicability are important problems to be considered in the hydrogen supply system of the hydrogen fuel engine due to the special physicochemical property of the hydrogen. In the prior art, an air source is adopted to directly connect and supply the engine, however, the operation process of the hydrogen fuel engine is changeable, the unstable hydrogen supply pressure is easily caused, and the safety of hydrogen supply cannot be ensured.
Disclosure of Invention
Accordingly, it is necessary to provide a hydrogen gas supply system and method for solving the problem that the pressure of the hydrogen gas supply is liable to be unstable.
An embodiment of a first aspect of the present application proposes a hydrogen gas supply method including:
providing an injection module for supplying hydrogen to an engine;
providing a storage module that supplies hydrogen to the injection module;
acquiring target pressure and current pressure in the injection module, wherein the target pressure is determined according to the current working condition of the engine;
and determining the hydrogen supply amount of the storage module to the injection module according to the target pressure and the current pressure, wherein the hydrogen supply amount is the input hydrogen amount of the injection module.
In one embodiment, determining the amount of hydrogen supplied by the storage module to the injection module based on the target pressure and the current pressure includes:
providing a pressure regulating module, wherein the pressure regulating module is connected between the storage module and the spraying module;
and regulating the hydrogen supply amount through the pressure regulating module.
In one embodiment, adjusting the amount of hydrogen supplied to the storage module by the voltage regulation module includes:
the pressure regulating module is provided with a pressure regulating opening, and the pressure regulating opening of the pressure regulating module corresponds to the hydrogen supply amount;
and determining the target pressure regulating opening degree of the pressure regulating module according to the target pressure and the current pressure.
In one embodiment, determining the amount of hydrogen supplied by the storage module to the injection module based on the target pressure and the current pressure includes:
acquiring the current temperature and the preset temperature of the injection module;
calculating a temperature difference value between the current temperature and the preset temperature to obtain a revision coefficient;
revising the current pressure according to the revising coefficient to obtain working pressure, wherein the working pressure is the pressure after compensating the current pressure based on the temperature difference value;
and determining the hydrogen supply amount according to the working pressure and the target pressure.
In one embodiment, in determining the amount of hydrogen supplied by the storage module to the injection module based on the target pressure and the current pressure, the method further comprises:
providing a protection module, wherein the protection module is arranged between the storage module and the spraying module;
acquiring the current output pressure of the storage module;
detecting whether the current output pressure is in a first preset numerical range or not;
when the current output pressure is within the first preset value interval, adjusting the protection module to be in an open state;
and when the current output pressure is not within the first preset value interval, regulating the protection module to be in a closed state.
In one embodiment, adjusting the protection module to an open state when the current output pressure is within the first preset value interval includes:
providing a warning module, wherein the warning module is used for displaying warning information;
detecting whether the current output pressure is within a second preset numerical range; wherein the second preset numerical value interval is a numerical value interval within the first preset numerical value interval;
when the current output pressure is within the second preset value interval, first warning information is sent to the warning module;
and when the current output pressure exceeds the second preset value interval, sending second warning information to the warning module.
An embodiment of a second aspect of the present application proposes a hydrogen gas supply system for an engine, including:
the storage module is used for storing hydrogen;
an injection module for supplying hydrogen to the engine;
the detection module comprises a first pressure detection piece, wherein the first pressure detection piece is used for detecting the current pressure inside the injection module;
the pressure regulating module is used for regulating the hydrogen supply amount of the storage module to the injection module, and is arranged between the storage module and the injection module;
the control module is used for acquiring target pressure and current pressure in the injection module, determining the hydrogen supply amount of the storage module to the injection module according to the target pressure and the current pressure, and communicating and connecting the control module with the detection module, the pressure regulating module and the injection module.
In one embodiment, the detection module further comprises a temperature detection member for detecting a current temperature of the injection module, the temperature detection member being in communication with the control module.
In one embodiment, the hydrogen supply system further comprises a protection module disposed between the storage module and the pressure regulating module; the detection module further comprises a second pressure detection piece, the second pressure detection piece is used for detecting the current output pressure of the storage unit, and the protection module and the second pressure detection piece are both in communication connection with the control module.
In one embodiment, the injection module includes a filter and a hydrogen rail assembly, the filter and the hydrogen rail assembly being disposed in sequence along a supply direction of hydrogen gas.
According to the hydrogen supply method, the current pressure in the injection module can be detected, the hydrogen supply quantity of the storage module to the injection module is regulated by combining the corresponding target pressure with the current pressure under different working conditions, so that closed-loop control of hydrogen supply is realized, and when the working conditions of the engine are changed or the engines with different structure types are replaced, the hydrogen supply quantity can be adaptively regulated according to the corresponding target pressure and the current pressure detected in real time, so that the hydrogen supply pressure is more stable.
Drawings
Fig. 1 is a schematic diagram of a hydrogen gas supply method according to an embodiment of the present application.
Fig. 2 is a schematic flow chart of a hydrogen gas supply method according to an embodiment of the application.
Fig. 3 is a schematic diagram of a safety detection method in the hydrogen gas supply method according to the embodiment of the application.
Fig. 4 is a schematic flow chart of a hydrogen supply system according to an embodiment of the application.
In the figure:
1. a storage module; 11. a hydrogen tank; 12. a pressure reducing member;
2. a jetting module; 21. a filter; 22. a hydrogen rail assembly; 23. an ejector;
3. a detection module; 31. a first pressure detecting member; 32. a temperature detecting member; 33. a second pressure detecting member;
4. a pressure regulating module; 5. a control module; 6. a protection module;
7. an engine;
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
It should be noted that the hydrogen supply system may be used to implement the following hydrogen supply method, and the control module of the hydrogen supply system may be used as an execution subject of the hydrogen supply method.
Referring to fig. 1-2 and fig. 4, fig. 2 shows a schematic flow chart of a hydrogen gas supply method according to an embodiment of the application. The hydrogen supply method provided by the embodiment of the application comprises the following steps:
the injection module 2 is provided, the injection module 2 being used for supplying hydrogen to the engine 7, i.e. the injection module 2 is capable of injecting hydrogen into the internal cavity of the engine 7 in order to allow the engine 7 to obtain hydrogen fuel for normal operation.
The storage module 1 is provided, the storage module 1 supplies hydrogen to the injection module 2, namely the storage module 1 can refer to a gas source for providing hydrogen, the storage module 1 can be pre-stored with hydrogen, and relatively stable hydrogen can be provided for the pressure so as to meet the use requirement of the engine 7, and the storage module can be jointly shifted with the engine 7, so that the storage module is convenient to transport and use.
The target pressure and the current pressure inside the injection module 2 are obtained, the target pressure is determined according to the current working condition of the engine 7, namely, when the engine 7 is in different working conditions, the injection module 2 has corresponding target pressure, and the injection module 2 needs to be regulated to the target pressure to supply hydrogen to the engine 7 so as to meet the operation requirement of the engine 7 on the corresponding working condition.
The amount of hydrogen supplied from the storage module 1 to the injection module 2 is determined based on the target pressure and the current pressure, and the amount of hydrogen supplied is the amount of hydrogen input to the injection module 2, that is, the storage module 1 supplies hydrogen to the injection module 2 with the amount of hydrogen supplied so that the target pressure is formed in the injection module 2 to supply hydrogen into the engine 7.
So set up, this embodiment can detect the inside current pressure of injection module 2 to through the target pressure that corresponds under the different operating modes and current pressure combination, adjust the hydrogen gas volume of supplying of storage module 1 to injection module 2, in order to realize the closed loop control to hydrogen supply, under the condition of engine 7 operating mode change or change different structure types's engine 7, still can carry out the adaptability to the hydrogen gas volume of supplying according to the target pressure that corresponds and the current pressure of real-time detection, make the supply pressure of hydrogen more stable, solved the easy unstable problem of pressure of hydrogen supply emergence.
In the present embodiment, for ease of understanding, the determination of the target pressure according to the current operating condition of the engine 7 is specifically explained here, specifically: because the working conditions of the hydrogen fuel engine 7 are different, the injection flow rate, the injection speed and the injection duration of the injection module 2 are different, the hydrogen fuel engine 7 is required to combine the injection flow rate, the injection speed and the injection duration in the bench calibration process, the rail pressure MAP is confirmed through calibration and is written into the control module 5 of the engine 7, under different working conditions, the control module 5 inputs the injection parameters of the injection module 2 and adjusts the operation of the injection module 2, for example, the current pressure in the injection module 2 is required to be adjusted to be smaller in the low-rotation-speed low-load working condition, and the injection of the injection module 2 can be controlled more easily and is more stable. In the high-speed and high-load condition, the injection module 2 needs to be adjusted to a larger target pressure to stabilize injection. The control module 5 determines the corresponding hydrogen supply amount by acquiring the changed current pressure and the corresponding target pressure under the current working condition, so that the storage module 1 supplies the corresponding hydrogen supply amount to the injection module 2, and the injection module 2 reaches the corresponding target pressure.
In some embodiments, determining the amount of hydrogen supplied by the storage module 1 to the injection module 2 based on the target pressure and the current pressure includes:
providing a voltage regulating module 4, wherein the voltage regulating module 4 is connected between the storage module 1 and the spraying module 2;
the amount of supplied hydrogen is regulated by the pressure regulating module 4.
Specifically, the pressure regulating module 4 may include a plurality of pressure regulating valves, which are disposed in parallel in a pipeline between the storage module 1 and the injection module 2, and the amount of hydrogen supplied from the storage module 1 to the injection module 2 may be adjusted by adjusting the number of opening of the pressure regulating valves. Alternatively, the pressure regulating module 4 may include a single pressure regulating valve, which may be connected in series in a pipeline between the storage module 1 and the injection module 2, and the amount of hydrogen supplied from the storage module 1 to the injection module 2 may be adjusted by adjusting the opening of the pressure regulating valve, so that the pressure regulating valve may be selected according to actual needs.
In some embodiments, adjusting the amount of hydrogen supplied to the storage module 1 by the pressure adjustment module 4 includes:
the pressure regulating module 4 is provided with a pressure regulating opening degree, and the pressure regulating opening degree of the pressure regulating module 4 corresponds to the hydrogen supply amount;
the target pressure regulating opening degree of the pressure regulating module 4 is determined according to the target pressure and the current pressure, namely, the hydrogen supply amount can be regulated to a corresponding value by regulating the pressure regulating module 4 to the target pressure regulating opening degree, and the storage module 1 supplies the corresponding hydrogen supply amount to the injection module 2, so that the injection module 2 reaches the corresponding target pressure.
Specifically, referring to fig. 2, the voltage regulation module 4 may include a calculating unit, a control driving unit and an electromagnetic driving unit, which are connected in a dependent communication manner, where the calculating unit is configured to calculate a pressure difference between the target pressure and the current pressure, the control driving unit is configured to adjust the action of the electromagnetic driving unit according to the pressure difference, and the electromagnetic driving unit is configured to perform a driving action to obtain a voltage regulation opening, that is, the calculating unit calculates the pressure difference and then transmits the pressure difference to the control driving unit, and the control driving unit drives the battery driving unit to act to the target voltage regulation opening according to the pressure difference by using a corresponding current, so as to regulate the amount of hydrogen supplied, thereby enabling the injection module 2 to reach the corresponding target pressure and improving the pressure stability of the system. The pressure regulating module 4 may be, but is not limited to, a pressure regulating valve. In practical application, because the working condition changes more complicated, electrical, mechanical or control faults are easy to occur, the voltage regulating module 4 can also comprise a fault diagnosis unit which can be in communication connection with the computing unit, the control driving unit and the electromagnetic driving unit as well as the control module 5, when the computing unit, the control driving unit and the electromagnetic driving unit have faults, the fault diagnosis unit can transmit the fault modes to the control module 5 in different codes, and the control module 5 combines the fault modes and risks to set different countermeasures.
Referring to fig. 2, in some embodiments, determining the amount of hydrogen supplied by the storage module 1 to the injection module 2 based on the target pressure and the current pressure includes:
acquiring the current temperature and the preset temperature of the injection module 2;
and calculating the temperature difference between the current temperature and the preset temperature to obtain a revision coefficient, wherein the revision coefficient can be an adjusting pressure difference value which is corresponding to the temperature difference value and needs to be increased or decreased.
And revising the current pressure according to the revising coefficient to obtain the working pressure, wherein the working pressure is the pressure after the current pressure is compensated based on the temperature difference value, namely the current pressure can be increased or decreased by a corresponding adjusting pressure difference value so as to obtain the corresponding working pressure.
According to the working pressure and the target pressure, the hydrogen supply amount is determined, namely, the hydrogen supply amount is determined according to the working pressure and the target pressure which are formed after temperature revising, so that the hydrogen supply amount corresponds to the current working condition more accurately, and the injection process of the injection module 2 is more stable.
Specifically, when the injection module 2 works under different temperature conditions, the pressure inside the injection module 2 is also affected by the temperature to change, at this time, the current pressure of the injection module 2 needs to be compensated by detecting the temperature of the injection module 2 to obtain the working pressure, and the supplied hydrogen amount is determined through the working pressure and the target pressure, so that the influence of the temperature on the supplied hydrogen amount can be reduced, the value of the supplied hydrogen amount is more accurate, and the injection process of the injection module 2 can be more stable and controllable. For example, when the temperature of the injection module 2 is lower or higher in winter or summer, the pressure inside the injection module 2 may be adjusted to be lower or higher than the normal pressure at the standard temperature, so that the working pressure of the injection module 2 corresponds to the working condition more, and the injection process of the injection module 2 is more stable. In this embodiment, the preset temperature may be selected according to actual use requirements, and the user may input the control module 5 through the input device.
Referring to fig. 3, fig. 3 is a schematic diagram showing a safety detection method in a hydrogen gas supply method according to an embodiment of the application. In some embodiments, in determining the amount of hydrogen supplied by the storage module 1 to the injection module 2 based on the target pressure and the current pressure, the method further comprises:
a protection module 6 is provided, the protection module 6 being arranged between the storage module 1 and the jetting module 2.
Acquiring the current output pressure of the storage module 1;
detecting whether the current output pressure is in a first preset numerical range or not;
when the current output pressure is within the first preset value interval, the protection module 6 is adjusted to be in an open state, that is, the storage module 1 is in a normal working state, and if no safety failure occurs, the protection module 6 can be kept in a normally open state.
When the current output pressure is not within the first preset value interval, the protection module 6 is adjusted to be in a closed state, that is, the output pressure of the storage module 1 is over-limited to the extent that the system cannot be supported to continue to work or safety risks exist, the control module 5 sends a signal to a control unit of the protection module 6, the control unit adjusts the execution unit to open, an air source is introduced, the protection module 6 is adjusted to be in the closed state, and the system stops supplying hydrogen to the engine 7.
In some embodiments, adjusting the protection module 6 to the open state when the current output pressure is within the first preset value interval includes:
the warning module is provided and used for displaying warning information, the warning module can be in communication connection with the protection module 6, and the warning information can be, but is not limited to, characters, images or sounds.
Detecting whether the current output pressure is within a second preset numerical range; the second preset value interval is a value interval within the first preset value interval, the upper bound of the second preset value interval is the same as the upper bound of the first preset value interval, and the lower bound of the second preset value interval is greater than the lower bound of the first preset value interval.
When the current output pressure is in the second preset value interval, first warning information is sent to the warning module, the first warning information can be overhaul and maintenance information, the warning module can be in communication connection with the control module 5, the control module 5 can adjust the warning module to report a warning fault code to remind a user to overhaul and maintain, the embodiment can be applied to the storage module 1 with insufficient air quantity, the system pressure is reduced, the user is reminded of hydrogenation, the pressure sensor is arranged at the high-pressure end of the hydrogen tank 11 instead of being arranged, and the risk can be reduced and the cost can be saved.
When the current output pressure exceeds a second preset numerical value interval, second warning information is sent to the warning module, the second warning information can be stop information, the condition can correspond to the condition that the system pressure range is over-limited and the system cannot be supported to continue working or safety risks exist, the control module 5 sends a signal to the warning module, a stop fault code is reported, a user is prompted to stop for maintenance, and the condition can correspond to the condition that the protection module 6 is closed.
Referring to fig. 4, fig. 4 is a schematic diagram of a hydrogen gas supply system according to an embodiment of the present application, wherein a solid arrow flow direction may refer to a component connection relationship and a dotted arrow flow direction may refer to a signal transmission relationship.
Another embodiment of the present application provides a hydrogen supply system for an engine 7, the hydrogen supply system being capable of communicating with the engine 7 to provide hydrogen at a stable pressure to the engine 7. The hydrogen supply system comprises a storage module 1, a spraying module 2, a detection module 3, a voltage regulating module 4 and a control module 5, wherein the storage module 1 is used for storing hydrogen and can be used as a gas source. The injection module 2 is used for supplying hydrogen to the engine 7, namely, the injection module 2 can be communicated with a working cavity of the engine 7 to inject the hydrogen into the engine 7, and the storage module 1, the pressure regulating module 4 and the injection module 2 are communicated with each other in a dependent manner along the supply direction of the hydrogen. The detection module 3 comprises a first pressure detection member 31, the first pressure detection member 31 being arranged between the injection module 2 and the control module 5, the first pressure detection member 31 being adapted to detect a current pressure inside the injection module 2 and being capable of transmitting the current pressure to the control module 5.
The pressure regulating module 4 is arranged between the storage module 1 and the injection module 2, and the pressure regulating module 4 is used for regulating the hydrogen supply amount of the storage module 1 to the injection module 2 so as to enable the inside of the injection module 2 to obtain different pressures. The control module 5 is used for obtaining the target pressure and the current pressure in the injection module 2, determining the hydrogen supply amount of the storage module 1 to the injection module 2 according to the target pressure and the current pressure, and the control module 5 is in communication connection with the detection module 3, the voltage regulating module 4 and the injection module 2.
When the engine 7 works, the control module 5 can send an adjusting instruction to the injection module 2, the injection module 2 starts to work, at the moment, the pressure in the injection module 2 is reduced, the first pressure detecting piece 31 feeds back the current pressure in the injection module 2 to the control module 5, the corresponding target pressure in the injection module 2 under different working conditions of the engine 7 is preset in the control module 5, the control module 5 selects the corresponding target pressure according to the current working condition of the engine 7, the hydrogen supply amount of the storage module 1 to the injection module 2 is determined according to the target pressure and the current pressure, the storage module 1 supplies hydrogen to the injection module 2 by the hydrogen supply amount, so that the target pressure is reached in the injection module 2, the injection module 2 supplies hydrogen to the engine 7 under the target pressure, the hydrogen supply process is more stable, the air inlet injection system and the in-cylinder direct injection system are all applicable, the operation is more flexible, the hydrogen supply is more stable, and the problem of the hydrogen supply is more stable, and the pressure is more applicable.
In the present embodiment, the voltage regulating module 4 may be, but is not limited to, an electrically controlled voltage regulating valve or an electrically controlled pressure reducer. The control module 5 may be, but is not limited to, an electronic control unit (ECU, electronic Control Unit, electronic control unit) comprising the engine 7, and the communication connection between the control module 5 and the detection module 3, the voltage regulation module 4 and the injection module 2 may be, but is not limited to, CAN communication. The control module 5 may include a signal acquisition unit and a signal processing unit that are connected in communication, where the signal acquisition unit is connected in communication with the detection module 3 and may transmit the acquired signal to the processing unit for corresponding processing.
The storage module 1 may include a hydrogen tank 11, the hydrogen tank 11 being capable of providing a supply of hydrogen gas at a relatively stable pressure. The storage module 1 may further include a pressure reducing member 12, where the pressure reducing member 12 is disposed at an outlet of the hydrogen tank 11, alternatively, the pressure reducing member 12 may include one or more pressure reducing valves that may be serially connected to form a first-stage pressure reduction or a multi-stage pressure reduction, or the pressure reducing member 12 may also include a bottleneck valve, which may be directly integrally disposed at the outlet of the hydrogen tank 11, so as to achieve a pressure reducing effect, and may be set according to the pressure of the hydrogen tank 11 and the pressure requirement of the pressure reduction. The outlet of the hydrogen tank 11 is provided with a pressure reducing valve, so that the system pressure of the hydrogen tank 11 can be reduced to the pressure range of the engine 7, the pressure stability control of the injection module 2 can be ensured, the design cost of the follow-up connection matching parts of the pressure reducing piece 12 can be reduced, and the reliability of the whole hydrogen supply system is improved. For example, if the injection pressure requirement of the engine 7 to which the present embodiment is applied is 25bar (bar, unit of pressure), the output pressure of the hydrogen tank 11 after passing through the pressure reducing member 12 may be 50bar to 70bar.
In some embodiments, the detection module 3 further includes a temperature detection member 32, where the temperature detection member 32 may be, but is not limited to, a temperature sensor, the temperature detection member 32 is configured to detect a current temperature of the injection module 2, and the temperature detection member 32 is in communication with the control module 5, so that the injection module 2 can transmit the detected current temperature value to the control module 5, a preset temperature is preset at the control module 5 for a user, a signal acquisition unit of the control module 5 can obtain the current temperature and the preset temperature of the injection module 2, and a temperature difference between the current temperature and the preset temperature can be calculated by a processing unit to obtain a revision coefficient, the control module 5 revises the current pressure according to the revision coefficient to obtain a working pressure, and the working pressure is a pressure after compensating the current pressure based on the temperature difference. And the control module 5 can determine the hydrogen supply amount according to the working pressure and the target pressure, and adjust the storage module 1 to supply hydrogen to the injection module 2 by the hydrogen supply amount, so that the hydrogen supply amount is more accurate, and the pressure fluctuation caused by the temperature influence is reduced.
In some embodiments, the hydrogen supply system further comprises a protection module 6, the protection module 6 being disposed between the storage module 1 and the pressure regulating module 4, the protection module 6 may be, but is not limited to, a pneumatic safety valve. The detection module 3 further comprises a second pressure detection part 33, the second pressure detection part 33 is used for detecting the current output pressure of the storage unit, the protection module 6 and the second pressure detection part 33 are both in communication connection with the control module 5, so that the second pressure detection part 33 can monitor the system pressure of the storage module 1 output entering the hydrogen supply system and transmit the current output pressure of the storage module 1 to the control module 5, the control module 5 monitors the current output pressure fed back by the second pressure detection part 33 in real time, and when the current output pressure of the storage module 1 is detected to be abnormal, the control module 5 can adjust the protection module 6 to close a cut-off air source in time, so that the safety in working engineering is ensured.
Among these, the case where the current output pressure is abnormal may include leakage of the hydrogen tank 11, making the current output pressure too low, or failure of the pressure reducing member 12, resulting in the current output pressure being too high. Specifically, after the engine 7 is matched with the whole vehicle, the hydrogen tank 11 is responsible for supplying air, and if the air source pressure is not monitored in real time after passing through the pressure reducing piece 12, the safety risk is easy to occur when the hydrogen tank 11 or the pressure reducing piece 12 fails. A protection module 6 is therefore arranged between the storage module 1 and the pressure regulating module 4, monitoring the system pressure in real time. The protection module 6 may comprise a control unit and an execution unit in communication, the control unit being in communication with the control module 5. The protection module 6 may be, but is not limited to, a pneumatic safety valve, the control unit may be a controller within the pneumatic safety valve, and the execution unit may be a pneumatic actuator. The control unit is able to adjust the execution unit in a closed state, at which time the protection module 6 remains in an open state. The control unit is able to adjust the execution unit in an open state, introducing a gas source to bring the protection module 6 in a closed state.
In some embodiments, the injection module 2 includes a filter 21 and a hydrogen rail assembly 22, where the filter 21 and the hydrogen rail assembly 22 are sequentially arranged along the hydrogen supply direction, and because of larger injection flow difference between different engines 7 and different working conditions, in the actual development process, there is a situation of larger pressure fluctuation, not only the hydrogen rail assembly 22 is required to have enough design volume, but also the pressure regulating module 4 is required to have higher responsiveness, the difficulty of designing and arranging the hydrogen rail assembly 22 is larger, and the difficulty of developing the pressure regulating module 4 is larger.
Compared with a fuel cell supply system, the filter 21 is arranged and the filter 21 is arranged at the rear end of the pressure regulating module 4, so that impurities and water vapor in hydrogen can be filtered, rail pressure stability of the hydrogen rail assembly 22 can be further ensured, and development difficulty of the pressure regulating module 4 is reduced. Specifically, the injection module 2 includes a plurality of injectors 23, the plurality of injectors 23 are communicated with the outlet of the hydrogen rail assembly 22, if the injection quantity of the outlet of the hydrogen rail assembly 22 is large, the hydrogen rail assembly 22 is limited by structural design, the volume is smaller, the responsiveness of the pressure regulating module 4 is slightly poorer, larger pressure fluctuation can occur, the filter 21 is arranged at the front end of the hydrogen rail assembly 22, the hydrogen rail assembly 22 is communicated with the filter 21, the pressure inside the hydrogen rail assembly 22 and the filter 21 is the same, the pressure of the hydrogen rail assembly 22 can be compensated through the filter 21, the rail pressure fluctuation is reduced, and therefore, the engine 7 can work more stably and reliably.
A further embodiment of the application provides a vehicle comprising an engine 7 and a hydrogen supply system that supplies hydrogen to the engine 7.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A hydrogen gas supply method, characterized by comprising:
providing an injection module for supplying hydrogen to an engine;
providing a storage module that supplies hydrogen to the injection module;
acquiring target pressure and current pressure in the injection module, wherein the target pressure is determined according to the current working condition of the engine;
and determining the hydrogen supply amount of the storage module to the injection module according to the target pressure and the current pressure, wherein the hydrogen supply amount is the input hydrogen amount of the injection module.
2. The hydrogen supply method according to claim 1, wherein determining an amount of hydrogen supplied from the storage module to the injection module based on the target pressure and the current pressure includes:
providing a pressure regulating module, wherein the pressure regulating module is connected between the storage module and the spraying module;
and regulating the hydrogen supply amount through the pressure regulating module.
3. The hydrogen supply method according to claim 2, characterized in that adjusting the amount of hydrogen supplied to the storage module by the pressure regulating module includes:
the pressure regulating module is provided with a pressure regulating opening, and the pressure regulating opening of the pressure regulating module corresponds to the hydrogen supply amount;
and determining the target pressure regulating opening degree of the pressure regulating module according to the target pressure and the current pressure.
4. The hydrogen supply method according to claim 1, wherein determining an amount of hydrogen supplied from the storage module to the injection module based on the target pressure and the current pressure includes:
acquiring the current temperature and the preset temperature of the injection module;
calculating a temperature difference value between the current temperature and the preset temperature to obtain a revision coefficient;
revising the current pressure according to the revising coefficient to obtain working pressure, wherein the working pressure is the pressure after compensating the current pressure based on the temperature difference value;
and determining the hydrogen supply amount according to the working pressure and the target pressure.
5. The hydrogen supply method according to claim 1, characterized in that in determining an amount of hydrogen supplied from the storage module to the injection module in accordance with the target pressure and the current pressure, the method further comprises:
providing a protection module, wherein the protection module is arranged between the storage module and the spraying module;
acquiring the current output pressure of the storage module;
detecting whether the current output pressure is in a first preset numerical range or not;
when the current output pressure is within the first preset value interval, adjusting the protection module to be in an open state;
and when the current output pressure is not within the first preset value interval, regulating the protection module to be in a closed state.
6. The hydrogen supply method according to claim 5, wherein adjusting the protection module to an open state when the current output pressure is within the first preset value interval, comprises:
providing a warning module, wherein the warning module is used for displaying warning information;
detecting whether the current output pressure is within a second preset numerical range; wherein the second preset numerical value interval is a numerical value interval within the first preset numerical value interval;
when the current output pressure is within the second preset value interval, first warning information is sent to the warning module;
and when the current output pressure exceeds the second preset value interval, sending second warning information to the warning module.
7. A hydrogen gas supply system for an engine (7), characterized by comprising:
a storage module (1) for storing hydrogen;
-an injection module (2) for supplying hydrogen to the engine (7);
-a detection module (3) comprising a first pressure detection member (31), said first pressure detection member (31) being adapted to detect a current pressure inside said injection module (2);
the pressure regulating module (4) is used for regulating the hydrogen supply amount of the storage module (1) to the injection module (2), and the pressure regulating module (4) is arranged between the storage module (1) and the injection module (2);
the control module (5) is used for acquiring target pressure and current pressure inside the injection module (2) and determining the hydrogen supply amount of the storage module (1) to the injection module (2) according to the target pressure and the current pressure, and the control module (5) is in communication connection with the detection module (3), the pressure regulating module (4) and the injection module (2).
8. The hydrogen supply system according to claim 7, characterized in that the detection module (3) further comprises a temperature detection member (32), the temperature detection member (32) being adapted to detect a current temperature of the injection module (2), the temperature detection member (32) being in communication with the control module (5).
9. The hydrogen supply system according to claim 7, further comprising a protection module (6), the protection module (6) being arranged between the storage module (1) and the pressure regulating module (4); the detection module (3) further comprises a second pressure detection piece (33), the second pressure detection piece (33) is used for detecting the current output pressure of the storage unit, and the protection module (6) and the second pressure detection piece (33) are both in communication connection with the control module (5).
10. The hydrogen supply system according to claim 7, wherein the injection module (2) includes a filter (21) and a hydrogen rail assembly (22), the filter (21) and the hydrogen rail assembly (22) being disposed in order along a supply direction of hydrogen.
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| CN202310633796.3A CN116696566A (en) | 2023-05-31 | 2023-05-31 | Hydrogen supply system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310633796.3A CN116696566A (en) | 2023-05-31 | 2023-05-31 | Hydrogen supply system and method |
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