CN117780522B - Hydrogen engine control method and device, vehicle and storage medium - Google Patents
Hydrogen engine control method and device, vehicle and storage medium Download PDFInfo
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Abstract
The invention discloses a hydrogen engine control method, a hydrogen engine control device, a vehicle and a storage medium. The hydrogen engine control method comprises the following steps: judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine speed and the current engine torque of the hydrogen engine when the current operation condition of the hydrogen engine is judged to be in the steady-state condition; and determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area. The invention realizes reasonable control of the EGR system of the hydrogen engine, and meets the requirements of the hydrogen engine on improving combustion stability, improving thermal efficiency and reducing NOx emission.
Description
Technical Field
The present invention relates to the field of engine control technologies, and in particular, to a method and apparatus for controlling a hydrogen engine, a vehicle, and a storage medium.
Background
The hydrogen engine is a hydrogen fuel engine, the hydrogen is gas at normal temperature and pressure, has the physical and chemical characteristics of low minimum ignition energy, about 0.019MJ (the minimum ignition energy of gasoline is 0.24 MJ), high fuel calorific value, high flame propagation speed and the like, and does not contain carbon and does not generate after combustionHydrogen is considered as an ideal energy source or energy carrier, and when the hydrogen is used as fuel of an internal combustion engine, lean combustion is easy to realize, the discharged pollutants are less, and the thermal efficiency is high. However, since the ignition energy of hydrogen is extremely low, the hydrogen is applied to an engine as fuel, and the knocking tendency is large, so that the improvement of the compression ratio of the hydrogen engine is limited to a great extent, and the improvement of the thermal efficiency of the hydrogen engine is further limited.
Disclosure of Invention
The invention provides a control method, a device, a vehicle and a storage medium of a hydrogen engine, which are used for solving the problems that the existing hydrogen engine has large knocking tendency, the improvement of the compression ratio of the hydrogen engine is limited, and the improvement of the thermal efficiency of the hydrogen engine are further limited.
According to an aspect of the present invention, there is provided a hydrogen engine control method applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, the hydrogen engine control method including:
Judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine speed and the current engine torque of the hydrogen engine when the current operation condition of the hydrogen engine is judged to be in the steady-state condition;
And determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area.
Optionally, determining that the current operating condition of the hydrogen engine is in an acceleration condition or a steady-state condition includes:
and acquiring real-time engine operation information of the hydrogen engine under the current operation working condition, and judging whether the current operation working condition of the hydrogen engine is in an acceleration working condition or a steady-state working condition according to the real-time engine operation information.
Optionally, after determining that the current operating condition of the hydrogen engine is in the acceleration condition or the steady-state condition, the method further includes:
and when the current operation condition of the hydrogen engine is judged to be in an acceleration condition, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed.
Optionally, controlling the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve to be the closed state includes:
And controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed, and controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed.
Optionally, the current hydrogen engine operation condition area is a first hydrogen engine operation condition area, a second hydrogen engine operation condition area, a third hydrogen engine operation condition area or a fourth hydrogen engine operation condition area;
Determining a current hydrogen engine operating condition area for operating the hydrogen engine according to the current engine speed and the current engine torque, including:
And determining that the hydrogen engine operates in the first hydrogen engine operation working condition area, the second hydrogen engine operation working condition area, the third hydrogen engine operation working condition area or the fourth hydrogen engine operation working condition area according to the current engine speed and the current engine torque.
Optionally, controlling the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve according to the current operating condition area of the hydrogen engine includes:
If the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed states;
If the current hydrogen engine operation working condition area is in the second hydrogen engine operation working condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state;
If the current hydrogen engine operation working condition area is in the third hydrogen engine operation working condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state;
And if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the opening and closing states of the third EGR valve to be an opening state and controlling the opening and closing states of the first EGR valve and the second EGR valve to be a closing state.
Optionally, if the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the on-off states of the first EGR valve, the second EGR valve and the third EGR valve to be closed, and controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed;
If the current hydrogen engine operation condition area is in the second hydrogen engine operation condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be on, the second EGR valve to be off and the third EGR valve to be off;
If the current hydrogen engine operation condition area is in the third hydrogen engine operation condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be closed, the second EGR valve to be opened and the third EGR valve to be closed;
And if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the switching state of the third EGR valve to be an opening state, and controlling the switching states of the first EGR valve and the second EGR valve to be a closing state, then controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be opened.
According to another aspect of the present invention, there is provided a hydrogen engine control apparatus applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, the hydrogen engine control apparatus including:
The rotating speed and torque determining module is used for executing the judgment that the current operating condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine rotating speed and the current engine torque of the hydrogen engine when the current operating condition of the hydrogen engine is judged to be in the steady-state condition;
And the on-off state control module is used for determining a current hydrogen engine operation working condition area of the hydrogen engine operation according to the current engine speed and the current engine torque, and controlling the on-off states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation working condition area.
According to another aspect of the present invention, there is provided a vehicle including a hydrogen engine and an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, the vehicle further including:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the hydrogen engine control method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to execute the hydrogen engine control method according to any one of the embodiments of the present invention.
According to the technical scheme, the current engine speed and the current engine torque of the hydrogen engine are obtained by judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition and when the current operation condition of the hydrogen engine is judged to be in the steady-state condition; and determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area. The invention solves the problems that the existing hydrogen engine has large knocking tendency, limits the improvement of the compression ratio of the hydrogen engine, further limits the improvement of the thermal efficiency of the hydrogen engine, realizes the reasonable control of the EGR system of the hydrogen engine, and meets the requirements of the hydrogen engine on improving the combustion stability, improving the thermal efficiency and reducing the NOx emission.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling a hydrogen engine according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling a hydrogen engine according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a hydrogen engine having an exhaust gas recirculation system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the operating condition zone division of a hydrogen engine EGR system provided in accordance with an embodiment of the present invention;
Fig. 5 is a schematic structural view of a control device for a hydrogen engine according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a vehicle implementing a hydrogen engine control method according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a hydrogen engine control method according to an embodiment of the present invention, where the method may be applied to a situation where reasonable control of an EGR system is implemented under different hydrogen engine operating conditions, and the method may be implemented by a hydrogen engine control device, where the hydrogen engine control device may be implemented in a hardware and/or software form, and where the hydrogen engine control device may be configured in various vehicles configured with a hydrogen engine. The hydrogen engine control method is applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, as shown in fig. 1, and includes:
S110, judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine speed and the current engine torque of the hydrogen engine when the current operation condition of the hydrogen engine is judged to be in the steady-state condition.
In this embodiment, according to the obtained real-time engine operation information of the hydrogen engine under the current operation condition, the current operation condition of the hydrogen engine is determined to be in an acceleration condition or a steady-state condition according to the real-time engine operation information.
Wherein the real-time engine operation information may include, but is not limited to, one or more combinations of information including water temperature, oil temperature, intake air pressure, throttle position, etc., which the present embodiment does not impose as any limitation. It is known that real-time engine operating information can be obtained by related engine sensors, thereby obtaining information of engine operating conditions.
The current operation condition of the hydrogen engine is in a steady-state condition, namely the operation condition of the hydrogen engine under the conditions of constant rotation speed, constant load, stable temperature and stable pressure. The current operation condition of the hydrogen engine is that the throttle valve is suddenly opened under the acceleration condition, so that the rotation speed of the hydrogen engine is rapidly increased, when the throttle valve is suddenly opened, the air flow rate and flow rate flowing through the carburetor and the vacuum degree of the throat are instantaneously and rapidly increased, but the flow rate is increased more slowly than the air flow rate due to the fact that the inertia of the liquid fuel is far greater than that of the air, so that the mixed gas is temporarily diluted.
Specifically, when the current operation condition of the hydrogen engine is judged to be in an acceleration condition according to the real-time engine information, the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve are controlled to be closed; and when the current operation working condition of the hydrogen engine is judged to be in a steady-state working condition according to the real-time engine information, the current engine speed and the current engine torque of the hydrogen engine are obtained.
The current engine speed of the hydrogen engine may be, but is not limited to, determined by measuring the speed of the crankshaft via a signal disc mounted on the crankshaft, or may be obtained by other means; the current engine torque may be calculated by, but not limited to, an engine torque formula, or may be obtained by sensing a test element by a torque sensor, which is not limited in this embodiment.
S120, determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area.
The division of the current operating condition area of the hydrogen engine may be obtained by performing repeated test operation on the EGR system of the hydrogen engine in advance according to a person skilled in the art, or may be obtained by other statistical methods, which is not limited in this embodiment.
In this embodiment, the current hydrogen engine operation condition area is a first hydrogen engine operation condition area, a second hydrogen engine operation condition area, a third hydrogen engine operation condition area or a fourth hydrogen engine operation condition area, that is, the operation condition of the hydrogen engine EGR system may be divided into the first hydrogen engine operation condition area, the second hydrogen engine operation condition area, the third hydrogen engine operation condition area and the fourth hydrogen engine operation condition area, and specifically, the first hydrogen engine operation condition area, the second hydrogen engine operation condition area, the third hydrogen engine operation condition area and the fourth hydrogen engine operation condition area are defined in a partition manner according to the engine speed and the engine torque.
The first EGR valve is defined as high pressure EGR in a hydrogen engine having an exhaust gas recirculation system, the first EGR valve being EGR introduced after the compressor of the stage 1 supercharger (i.e., exhaust gas turbocharger) turbine and before the compressor of the stage 2 supercharger (i.e., electric supercharger).
The second EGR valve is defined as high and medium pressure EGR in a hydrogen engine having an exhaust gas recirculation system, the second EGR valve being EGR introduced from the front of the stage 1 supercharger (i.e., exhaust gas turbocharger) turbine and from the intermediate of the stage 1 supercharger compressor and the stage 2 supercharger (i.e., electric supercharger) compressor.
The third EGR valve is defined as high-low pressure EGR in a hydrogen engine having an exhaust gas recirculation system, and is EGR introduced from before the stage 1 supercharger (i.e., exhaust turbocharger) turbine and from before the stage 1 supercharger (i.e., exhaust turbocharger) compressor.
On the basis of the above, according to the hydrogen engine operating in the first hydrogen engine operating condition area, the second hydrogen engine operating condition area, the third hydrogen engine operating condition area or the fourth hydrogen engine operating condition area, the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve are controlled.
According to the technical scheme, the current engine speed and the current engine torque of the hydrogen engine are obtained by judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition and when the current operation condition of the hydrogen engine is judged to be in the steady-state condition; and determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area. The invention solves the problems that the existing hydrogen engine has large knocking tendency, limits the improvement of the compression ratio of the hydrogen engine, further limits the improvement of the thermal efficiency of the hydrogen engine, realizes the reasonable control of the EGR system of the hydrogen engine, and meets the requirements of the hydrogen engine on improving the combustion stability, improving the thermal efficiency and reducing the NOx emission.
Example two
Fig. 2 is a flowchart of a hydrogen engine control method according to a second embodiment of the present invention, and an alternative implementation manner is provided based on the foregoing embodiment. As shown in fig. 2, the hydrogen engine control method includes:
S210, acquiring real-time engine operation information of the hydrogen engine under the current operation working condition, judging whether the current operation working condition of the hydrogen engine is in a steady-state working condition according to the real-time engine operation information, if so, executing the step S220, and if not, executing the step S230.
In the present embodiment, the hydrogen engine control method is applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve 11, a second EGR valve 12, and a third EGR valve 13, as shown in fig. 3, the exhaust gas recirculation system further including a driving motor 14, an EGR cooler 15, an intercooler 16, an electronic throttle valve 17, an exhaust gas turbocharger 18, and an electric supercharger 19, the first EGR valve 11 being electrically connected to the electronic throttle valve 17, the hydrogen engine 20, and the EGR cooler 15, respectively, the second EGR valve 12 being electrically connected to the electric supercharger 19 and the EGR cooler 15, respectively, the third EGR valve 13 being electrically connected to the exhaust gas turbocharger 18 and the EGR cooler 15, respectively, the intercooler 16 being electrically connected to the electronic throttle valve 17 and the electric supercharger 19, respectively, the driving motor 14 being electrically connected to the electric supercharger 19.
S220, acquiring the current engine speed and the current engine torque of the hydrogen engine, and executing step S240.
S230, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed.
When the current operation condition of the hydrogen engine is judged to be in an acceleration condition, the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve are controlled to be closed, and at the moment, the hydrogen engine EGR system is not adopted to work, namely the first EGR valve is controlled to be closed, the second EGR valve is controlled to be closed and the third EGR valve is controlled to be closed.
S240, determining that the hydrogen engine operates in a first hydrogen engine operation condition area, a second hydrogen engine operation condition area, a third hydrogen engine operation condition area or a fourth hydrogen engine operation condition area according to the current engine speed and the current engine torque.
S250, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the operation condition of the hydrogen engine in the first hydrogen engine operation condition area, the second hydrogen engine operation condition area, the third hydrogen engine operation condition area or the fourth hydrogen engine operation condition area.
Dividing the operation condition of the hydrogen engine EGR system into four areas as shown in fig. 4, wherein the current operation condition area of the hydrogen engine is in a first operation condition area of the hydrogen engine, the first operation condition area of the hydrogen engine is that the hydrogen engine is operated in a small load area, and the hydrogen engine EGR system is not adopted to work at the moment, and then the vehicle electronic control unit EGU controls the on-off states of the first EGR valve, the second EGR valve and the third EGR valve to be in the off states, namely controls the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed.
With continued reference to fig. 4, if the current hydrogen engine operation condition area is in the second hydrogen engine operation condition area, where the second hydrogen engine operation condition area is a middle-small load area where the hydrogen engine is operated, and the hydrogen engine high EGR system is used at this time, the vehicle electronic control unit EGU controls the on-off state of the first EGR valve to be an on state, and controls the on-off states of the second EGR valve and the third EGR valve to be an off state, that is, controls the first EGR valve to be on, the second EGR valve to be off, and the third EGR valve to be off.
With continued reference to fig. 4, if the current hydrogen engine operation condition area is in the third hydrogen engine operation condition area, and the third hydrogen engine operation condition area is that the hydrogen engine is operated in the middle-large load area, and the hydrogen engine high-middle EGR system is adopted to work at this time, the vehicle electronic control unit EGU controls the on-off state of the second EGR valve to be an on state, and controls the on-off states of the first EGR valve and the third EGR valve to be an off state, that is, controls the first EGR valve to be closed, the second EGR valve to be opened, and the third EGR valve to be closed.
With continued reference to fig. 4, if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, and the fourth hydrogen engine operation condition area is that the hydrogen engine is operated in a large load area, and the high-low EGR system of the hydrogen engine is used at this time, the vehicle electronic control unit EGU controls the on-off state of the third EGR valve to be an on state, and controls the on-off states of the first EGR valve and the second EGR valve to be an off state, that is, controls the first EGR valve to be off, the second EGR valve to be off, and the third EGR valve to be on.
According to the technical scheme provided by the embodiment of the invention, the engine operation information acquired in real time under the operating condition of the hydrogen engine is used as a judging condition, so that the reasonable control of the hydrogen engine EGR system is realized, meanwhile, the flexible regulation advantages of different EGR rates are realized under different operating conditions of the hydrogen engine by combining the hydrogen engine EGR system, the combustion performance of the hydrogen engine is improved, the pain points with large knocking tendency, compression ratio improvement limitation and low thermal efficiency are based on the hydrogen engine, and the requirements of the hydrogen engine on combustion stability, thermal efficiency improvement and NOx emission reduction are met.
Example III
Fig. 5 is a schematic structural diagram of a control device for a hydrogen engine according to a third embodiment of the present invention. The hydrogen engine control apparatus is applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, as shown in fig. 5, and includes:
The rotational speed and torque determining module 310 is configured to perform determining that a current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and obtain a current engine rotational speed and a current engine torque of the hydrogen engine when the current operation condition of the hydrogen engine is determined to be in the steady-state condition;
The on-off state control module 320 is configured to determine a current hydrogen engine operation condition area in which the hydrogen engine is operated according to the current engine speed and the current engine torque, and control on-off states of the first EGR valve, the second EGR valve, and the third EGR valve according to the current hydrogen engine operation condition area.
Optionally, the method is used for judging whether the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and is specifically used for:
and acquiring real-time engine operation information of the hydrogen engine under the current operation working condition, and judging whether the current operation working condition of the hydrogen engine is in an acceleration working condition or a steady-state working condition according to the real-time engine operation information.
Optionally, the hydrogen engine control device further includes:
And the acceleration working condition control module is used for controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed when the current operation working condition of the hydrogen engine is judged to be in the acceleration working condition.
Optionally, the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve are controlled to be closed, which is specifically configured to:
And controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed, and controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed.
Optionally, the current hydrogen engine operation condition area is a first hydrogen engine operation condition area, a second hydrogen engine operation condition area, a third hydrogen engine operation condition area or a fourth hydrogen engine operation condition area;
And determining a current hydrogen engine operation working condition area of the hydrogen engine according to the current engine speed and the current engine torque, wherein the current hydrogen engine operation working condition area is specifically used for:
And determining that the hydrogen engine operates in the first hydrogen engine operation working condition area, the second hydrogen engine operation working condition area, the third hydrogen engine operation working condition area or the fourth hydrogen engine operation working condition area according to the current engine speed and the current engine torque.
Optionally, the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve are controlled according to the current operating condition area of the hydrogen engine, which is specifically configured to:
If the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed states;
If the current hydrogen engine operation working condition area is in the second hydrogen engine operation working condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state;
If the current hydrogen engine operation working condition area is in the third hydrogen engine operation working condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state;
And if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the opening and closing states of the third EGR valve to be an opening state and controlling the opening and closing states of the first EGR valve and the second EGR valve to be a closing state.
Optionally, if the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the on-off states of the first EGR valve, the second EGR valve and the third EGR valve to be closed, and controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed;
If the current hydrogen engine operation condition area is in the second hydrogen engine operation condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be on, the second EGR valve to be off and the third EGR valve to be off;
If the current hydrogen engine operation condition area is in the third hydrogen engine operation condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be closed, the second EGR valve to be opened and the third EGR valve to be closed;
And if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the switching state of the third EGR valve to be an opening state, and controlling the switching states of the first EGR valve and the second EGR valve to be a closing state, then controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be opened.
The hydrogen engine control device provided by the embodiment of the invention can execute the hydrogen engine control method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the hydrogen engine control method.
Example IV
The vehicle comprises a hydrogen engine and an exhaust gas recirculation system comprising a first EGR valve, a second EGR valve and a third EGR valve, fig. 6 shows a schematic structural view of a vehicle 410 that may be used to implement an embodiment of the present invention, as shown in fig. 6, the vehicle 410 further comprising at least one processor 411, and a memory communicatively connected to the at least one processor 411, such as a read only memory (ROM 412), a random access memory (RAM 413), etc., wherein the memory stores a computer program executable by the at least one processor, and the processor 411 may perform various suitable actions and processes according to the computer program stored in the read only memory (ROM 412) or the computer program loaded from the storage unit 418 into the random access memory (RAM 413). In the RAM 413, various programs and data required for the operation of the vehicle 410 may also be stored. The processor 411, the ROM 412, and the RAM 413 are connected to each other through a bus 414. An I/O (input/output) interface 415 is also connected to bus 414.
Various components in the vehicle 410 are connected to the I/O interface 415, including: an input unit 416 such as a keyboard, a mouse, etc.; an output unit 417 such as various types of displays, speakers, and the like; a storage unit 418, such as a magnetic disk, optical disk, or the like; and a communication unit 419 such as a network card, modem, wireless communication transceiver, etc. The communication unit 419 allows the vehicle 410 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The processor 411 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 411 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 411 performs the various methods and processes described above, such as the hydrogen engine control method.
In some embodiments, the hydrogen engine control method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 418. In some embodiments, some or all of the computer program may be loaded and/or installed onto the vehicle 410 via the ROM 412 and/or the communication unit 419. When a computer program is loaded into RAM 413 and executed by processor 411, one or more steps of the hydrogen engine control method described above may be performed. Alternatively, in other embodiments, the processor 411 may be configured to perform the hydrogen engine control method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or a trackball) by which a user can provide input to the vehicle. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. A hydrogen engine control method, characterized by being applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, comprising:
Judging that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine speed and the current engine torque of the hydrogen engine when the current operation condition of the hydrogen engine is judged to be in the steady-state condition;
Determining a current hydrogen engine operation condition area of the hydrogen engine according to the current engine speed and the current engine torque, and controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area; the current hydrogen engine operation working condition area is a first hydrogen engine operation working condition area, a second hydrogen engine operation working condition area, a third hydrogen engine operation working condition area or a fourth hydrogen engine operation working condition area;
Wherein controlling the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve according to the current hydrogen engine operation condition region includes: if the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed states; if the current hydrogen engine operation working condition area is in the second hydrogen engine operation working condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state; if the current hydrogen engine operation working condition area is in the third hydrogen engine operation working condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state; and if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the opening and closing states of the third EGR valve to be an opening state and controlling the opening and closing states of the first EGR valve and the second EGR valve to be a closing state.
2. The hydrogen engine control method according to claim 1, characterized in that the determination that the current operation condition of the hydrogen engine is in an acceleration condition or a steady-state condition includes:
and acquiring real-time engine operation information of the hydrogen engine under the current operation working condition, and judging whether the current operation working condition of the hydrogen engine is in an acceleration working condition or a steady-state working condition according to the real-time engine operation information.
3. The hydrogen engine control method according to claim 1, characterized by further comprising, after determining that the current operation condition of the hydrogen engine is in the acceleration condition or the steady-state condition:
and when the current operation condition of the hydrogen engine is judged to be in an acceleration condition, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed.
4. The hydrogen engine control method according to claim 3, characterized in that controlling the on-off states of the first EGR valve, the second EGR valve, and the third EGR valve to be the off state includes:
And controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed, and controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be closed.
5. The hydrogen engine control method according to claim 1, characterized in that determining a current hydrogen engine operation condition region of the hydrogen engine operation from the current engine speed and the current engine torque includes:
And determining that the hydrogen engine operates in the first hydrogen engine operation working condition area, the second hydrogen engine operation working condition area, the third hydrogen engine operation working condition area or the fourth hydrogen engine operation working condition area according to the current engine speed and the current engine torque.
6. The hydrogen engine control method according to claim 1, characterized in that if the current hydrogen engine operation condition region is in the first hydrogen engine operation condition region, the opening and closing states of the first EGR valve, the second EGR valve, and the third EGR valve are controlled to be closed, and then the first EGR valve, the second EGR valve, and the third EGR valve are controlled to be closed;
If the current hydrogen engine operation condition area is in the second hydrogen engine operation condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be on, the second EGR valve to be off and the third EGR valve to be off;
If the current hydrogen engine operation condition area is in the third hydrogen engine operation condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state, then controlling the first EGR valve to be closed, the second EGR valve to be opened and the third EGR valve to be closed;
And if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the switching state of the third EGR valve to be an opening state, and controlling the switching states of the first EGR valve and the second EGR valve to be a closing state, then controlling the first EGR valve to be closed, the second EGR valve to be closed and the third EGR valve to be opened.
7. A hydrogen engine control apparatus, characterized by being applied to a hydrogen engine having an exhaust gas recirculation system including a first EGR valve, a second EGR valve, and a third EGR valve, comprising:
The rotating speed and torque determining module is used for executing the judgment that the current operating condition of the hydrogen engine is in an acceleration condition or a steady-state condition, and acquiring the current engine rotating speed and the current engine torque of the hydrogen engine when the current operating condition of the hydrogen engine is judged to be in the steady-state condition;
The on-off state control module is used for determining a current hydrogen engine operation working condition area of the hydrogen engine operation according to the current engine speed and the current engine torque, and controlling on-off states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation working condition area; the current hydrogen engine operation working condition area is a first hydrogen engine operation working condition area, a second hydrogen engine operation working condition area, a third hydrogen engine operation working condition area or a fourth hydrogen engine operation working condition area;
The method comprises the steps of controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve according to the current hydrogen engine operation condition area, wherein the method is specifically used for: if the current hydrogen engine operation condition area is in the first hydrogen engine operation condition area, controlling the opening and closing states of the first EGR valve, the second EGR valve and the third EGR valve to be closed states; if the current hydrogen engine operation working condition area is in the second hydrogen engine operation working condition area, controlling the on-off state of the first EGR valve to be an on state, and controlling the on-off states of the second EGR valve and the third EGR valve to be an off state; if the current hydrogen engine operation working condition area is in the third hydrogen engine operation working condition area, controlling the on-off state of the second EGR valve to be an on state, and controlling the on-off states of the first EGR valve and the third EGR valve to be an off state; and if the current hydrogen engine operation condition area is in the fourth hydrogen engine operation condition area, controlling the opening and closing states of the third EGR valve to be an opening state and controlling the opening and closing states of the first EGR valve and the second EGR valve to be a closing state.
8. A vehicle comprising a hydrogen engine and an exhaust gas recirculation system comprising a first EGR valve, a second EGR valve, and a third EGR valve, the vehicle further comprising:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the hydrogen engine control method according to any one of claims 1 to 6.
9. A computer readable storage medium storing computer instructions for causing a processor to execute the hydrogen engine control method according to any one of claims 1 to 6.
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| CN108131221A (en) * | 2017-12-20 | 2018-06-08 | 广州汽车集团股份有限公司 | Gasoline engine gas recirculation system and control method |
| CN110552780A (en) * | 2019-09-30 | 2019-12-10 | 潍柴动力股份有限公司 | Engine air intake and exhaust system and engine |
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| JP4320859B2 (en) * | 1998-11-27 | 2009-08-26 | マツダ株式会社 | Control device for turbocharged engine |
| JP5396144B2 (en) * | 2009-05-14 | 2014-01-22 | 日本特殊陶業株式会社 | Glow plug energization control device and glow plug |
| JP5814814B2 (en) * | 2012-02-06 | 2015-11-17 | 株式会社日立製作所 | Vehicle control system and vehicle drive control method |
| CN111042910A (en) * | 2019-12-26 | 2020-04-21 | 一汽解放汽车有限公司 | Supercharging system for engine and control method |
| CN218235227U (en) * | 2022-03-07 | 2023-01-06 | 潍柴动力股份有限公司 | Hydrogen engine and vehicle |
| CN116517711A (en) * | 2023-04-18 | 2023-08-01 | 重庆长安汽车股份有限公司 | Engine control method, device, unit and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108131221A (en) * | 2017-12-20 | 2018-06-08 | 广州汽车集团股份有限公司 | Gasoline engine gas recirculation system and control method |
| CN110552780A (en) * | 2019-09-30 | 2019-12-10 | 潍柴动力股份有限公司 | Engine air intake and exhaust system and engine |
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