Control system, method and device for vehicle natural gas engine

Abstract

The invention relates to the technical field of engines, in particular to a control system, method and device for a vehicle natural gas engine. Comprising a throttle valve opening degree sensor used for detecting the opening degree of a throttle valve and generating an opening degree signal representing the opening degree of the throttle valve; the engine controller is used for generating a control signal for controlling the opening and closing state of the deflation valve according to the opening signal and sending the control signal to the deflation valve; and the deflation valve is used for adjusting the on-off state according to the control signal so as to exhaust high-pressure air in the intercooler. The deflation valve is connected between the intercooler and the engine controller, the throttle valve opening degree sensor is arranged on the throttle valve to detect the opening degree of the throttle valve to obtain the opening degree signal, the engine controller generates the control signal according to the opening degree signal to control the opening and closing state of the deflation valve, and high-pressure air retained in the intercooler is exhausted in time; therefore, the low-temperature starting performance and the operation stability of the engine are guaranteed.

Description

Technical Field

[0001] This application relates to the field of engine technology, and more particularly to a control system, method, and apparatus for a vehicle natural gas engine. Background Technology

[0002] Existing natural gas engines use a throttle valve to regulate the intake air volume. When the throttle valve is closed, the pressurized air is trapped inside the intercooler, resulting in high-pressure air retention. This can easily cause turbocharger surge and lead to water accumulation and freezing inside the intercooler, making it difficult to start the engine. Summary of the Invention

[0003] This application provides a control system, method, and apparatus for a vehicle natural gas engine, which controls the opening and closing state of the vent valve according to the throttle opening signal to promptly discharge the high-pressure air trapped in the intercooler, avoid turbocharger surge, and thus ensure the engine's low-temperature starting performance and operational stability.

[0004] In a first aspect, embodiments of this application provide a control system for a vehicle's natural gas engine. The system includes: an intercooler, a bleed valve, an engine controller, and a throttle valve. A throttle valve opening sensor is mounted on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. Wherein: Throttle opening sensor is used to detect the opening of the throttle valve and generate an opening signal that characterizes the throttle opening. The engine controller is used to generate a control signal to control the opening and closing state of the bleed valve based on the opening signal, and to send the control signal to the bleed valve. The vent valve is used to adjust its switching state according to the control signal in order to release the high-pressure air in the intercooler.

[0005] Optionally, the aforementioned vent valve is located at the bottom of the intercooler.

[0006] Optionally, if the throttle opening is zero, the engine controller is specifically used for: Generate an opening control signal to control the opening of the vent valve, and send the opening control signal to the vent valve; The vent valve adjusts its switch status according to the control signal; specifically, it is used for: Adjust the switch to the open state according to the opening control signal so that the intercooler can discharge high-pressure air.

[0007] Optionally, the control system of the aforementioned vehicle's natural gas engine also includes the engine, with the first end of the throttle valve connected to the intercooler and the second end of the throttle valve connected to the engine; if the throttle valve opening is greater than zero, the engine controller is specifically used for: Generate a closing control signal to control the vent valve to close, and send the closing control signal to the vent valve; The vent valve adjusts its switch status according to the control signal; specifically, it is used for: Adjust the switch to the off state according to the shutdown control signal so that the high-pressure air in the intercooler can enter the engine through the throttle valve.

[0008] Secondly, embodiments of this application provide a control method for a vehicle natural gas engine, applied to an engine controller in a vehicle natural gas engine control system. The vehicle natural gas engine control system further includes: an intercooler, a bleed valve, and a throttle valve. A throttle valve opening sensor is provided on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. The method includes: A control signal is generated based on the opening signal to control the opening and closing state of the bleed valve, and the control signal is sent to the bleed valve so that the bleed valve adjusts its opening and closing state according to the control signal to discharge the high-pressure air in the intercooler. The opening signal is obtained by the throttle opening sensor detecting the opening of the throttle valve and is used to characterize the throttle opening.

[0009] In the above method, the opening and closing state of the bleed valve is controlled according to the throttle opening signal, which can timely discharge the high-pressure air trapped in the intercooler, avoid turbocharger surge, reduce the risk of condensation and icing inside the intercooler, and thus ensure the engine's low-temperature starting performance and operational stability.

[0010] Optionally, the vent valve in the vehicle's natural gas engine control system is located at the bottom of the intercooler.

[0011] In the above method, the vent valve is located at the bottom of the intercooler, which can discharge condensate water at the same time as exhausting the gas, reduce water residue in the intercooler, prevent freezing and blockage in winter, and ensure the engine's low-temperature starting performance and operational stability.

[0012] Optionally, if the throttle opening is zero, the engine controller generates an opening control signal to control the opening of the bleed valve and sends the opening control signal to the bleed valve so that the bleed valve adjusts its switch state to open according to the opening control signal, thereby allowing the intercooler to discharge high-pressure air.

[0013] In the above method, opening the bleed valve in time when the throttle is closed can quickly expel the high-pressure air in the intercooler and effectively prevent turbocharger surge.

[0014] Optionally, the control system of the vehicle's natural gas engine also includes the engine, with the first end of the throttle valve connected to the intercooler and the second end of the throttle valve connected to the engine; if the opening of the throttle valve is greater than zero, the engine controller generates a closing control signal to control the vent valve to close, and sends the closing control signal to the vent valve so that the vent valve adjusts its switch state to closed according to the closing control signal, thereby allowing the high-pressure air in the intercooler to enter the engine through the throttle valve.

[0015] In the above method, closing the bleed valve when the throttle is open can ensure that the intake air is supplied to the engine normally, without affecting the engine's normal intake and power output, effectively preventing turbocharger surge, reducing the moisture retained in the intercooler, eliminating the intercooler icing phenomenon in winter, and meeting the normal operating requirements of the engine.

[0016] Thirdly, a control device for a vehicle natural gas engine, applied to an engine controller in a vehicle natural gas engine control system, the system further comprising: an intercooler, a bleed valve, and a throttle valve, wherein a throttle valve opening sensor is provided on the throttle valve, a first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller; the intercooler is used to supply high-pressure air to the engine during engine operation; the device includes: The processing unit is used to generate a control signal for controlling the opening and closing state of the bleed valve based on the opening signal. The opening signal is obtained by the throttle opening sensor detecting the opening of the throttle valve, and the opening signal is used to characterize the throttle opening. The transceiver unit is used to send control signals to the vent valve so that the vent valve adjusts its opening and closing state according to the control signal to discharge the high-pressure air in the intercooler.

[0017] Fourthly, embodiments of this application also provide a computer device, including: Memory, used to store program instructions; A processor is used to call program instructions stored in memory and execute any of the methods in the second aspect above according to the obtained program.

[0018] Fifthly, embodiments of this application also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the method of any one of the second aspects described above.

[0019] In a sixth aspect, embodiments of this application also provide a computer program product, which includes an executable program that is executed by a processor using the method described in any of the second aspects above. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a control system for a vehicle natural gas engine is provided as an embodiment of this application; Figure 2 A flowchart illustrating a control method for a vehicle natural gas engine provided in this application embodiment; Figure 3 A schematic diagram of a control device for a vehicle natural gas engine provided in an embodiment of this application; Figure 4 This is a schematic diagram of the hardware structure of an electronic device using an embodiment of this application; Figure 5 This is a schematic diagram of the hardware structure of a computing device according to an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The application scenarios described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will understand that with the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0024] Natural gas engines typically regulate the intake air volume by controlling the throttle opening. When the throttle is closed, the high-pressure air, after being pressurized, is trapped inside the intercooler and cannot enter the engine cylinders. At this time, the turbocharger outlet pressure remains at a high level, while the engine intake airflow is significantly reduced, which can easily cause turbocharger surge, affecting the normal operation of the turbocharger and the engine. Simultaneously, the high-pressure air trapped inside the intercooler is cooled down, and water vapor in the air condenses into liquid water, which adheres to the inner wall of the intercooler. In low-temperature winter conditions, after the engine is shut down, the water accumulated in the intercooler is prone to freezing, causing a reduction in the cross-sectional area of ​​the intercooler flow channels, an increase in flow resistance, and even blockage of the flow channels, leading to difficulty in starting the engine and a decline in starting performance.

[0025] To address the aforementioned problems, this application provides a control system for a vehicle natural gas engine: the control system includes an intercooler, a bleed valve, an engine controller, and a throttle valve. A throttle valve opening sensor is mounted on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. The throttle valve opening sensor detects the throttle valve opening and generates an opening signal characterizing the throttle valve opening. The engine controller generates a control signal based on the opening signal to control the opening and closing state of the bleed valve and sends the control signal to the bleed valve. The bleed valve adjusts its opening and closing state based on the control signal to discharge high-pressure air from the intercooler.

[0026] This application connects a bleed valve between the intercooler and the engine controller, and installs a throttle opening sensor on the throttle valve to detect the throttle opening and obtain an opening signal. The engine controller generates a control signal based on the opening signal to control the opening and closing state of the bleed valve, so as to timely discharge the high-pressure air trapped in the intercooler, avoid turbocharger surge, reduce the risk of condensation and icing inside the intercooler, and thus ensure the engine's low-temperature starting performance and operational stability.

[0027] like Figure 1 As shown in the figure, this application provides a schematic diagram of a control system for a vehicle natural gas engine. The control system for the vehicle natural gas engine includes an intercooler 101, a vent valve 102, an engine controller 103, a throttle valve 104, an engine 105, a turbocharger 106, and a throttle opening sensor 107.

[0028] The throttle valve 104 is equipped with a throttle valve opening sensor 107; the first end of the wastegate valve 102 is connected to the intercooler 101, and the second end of the wastegate valve 102 is connected to the engine controller 103; the first end of the throttle valve 104 is connected to the intercooler 101, and the second end of the throttle valve 104 is connected to the engine 105; the intercooler 101 is connected to the turbocharger 106. Among them: Throttle opening sensor 107 is used to detect the opening of the throttle and generate an opening signal that characterizes the opening of the throttle; The engine controller is used to generate a control signal to control the opening and closing state of the bleed valve based on the opening signal, and to send the control signal to the bleed valve. The vent valve is used to adjust its switching state according to the control signal in order to release the high-pressure air in the intercooler.

[0029] In one alternative implementation, the throttle opening sensor 107 and the engine controller 103 can communicate via a communication network.

[0030] Optionally, the vent valve can be located at the bottom of the intercooler. Compared with the existing technology that uses a drain plug to remove water from the intercooler, this application, by placing the vent valve at the bottom of the intercooler, can use gravity to discharge the high-pressure air in the intercooler while simultaneously draining the water generated by cooling and condensation. This effectively reduces water residue, prevents freezing and blockage in winter, and quickly releases pressure to prevent turbocharger surge, thereby improving engine reliability and starting performance.

[0031] The following describes the control method for a vehicle natural gas engine provided by an exemplary embodiment of this application, in conjunction with the application scenarios described above and with reference to the accompanying drawings. It should be noted that the above application scenarios are only shown to facilitate understanding of the spirit and principles of this application, and the embodiments of this application are not limited in any way in this respect.

[0032] Figure 2 A flowchart of a control method for a vehicle natural gas engine provided in an embodiment of this application is shown, such as... Figure 2 As shown, the method may include the following steps: Step S201: Throttle opening sensor, used to detect the opening of the throttle valve and generate an opening signal characterizing the throttle opening.

[0033] Specifically, the throttle opening sensor can detect the throttle opening in real time and synchronize the opening signal, which represents the throttle opening, to the engine controller.

[0034] It is understood that the embodiments of this application do not limit the method of synchronizing the throttle opening signal to the engine controller. For example, the throttle opening sensor can send an opening signal to the engine controller; or, for another example, the engine controller can obtain the opening signal from the throttle opening sensor.

[0035] Step S202: The engine controller is used to generate a control signal to control the opening and closing state of the vent valve based on the opening signal, and send the control signal to the vent valve.

[0036] Specifically, the engine controller can generate a control signal to control the opening and closing state of the bleed valve based on the throttle opening represented by the opening signal. By controlling the opening and closing state of the bleed valve through the control signal, the bleed valve is ensured to open when the throttle opening is zero (closed state) and close when the throttle opening is not zero (open state), thereby preventing the pressurized air from being blocked and stagnant in the intercooler.

[0037] In some embodiments, when the throttle opening is zero (closed state), the engine controller generates an opening control signal to control the opening of the bleed valve and sends the opening control signal to the bleed valve. For example, during a detection process, the throttle opening sensor detects that the throttle opening is zero; the throttle opening sensor sends an opening signal 1, representing that the throttle opening is zero, to the engine controller. After receiving the opening signal 1, the engine controller generates an opening control signal to control the opening of the bleed valve and sends the opening control signal to the bleed valve.

[0038] In other embodiments, when the throttle opening is not zero (open state), the engine controller generates a closing control signal to close the bleed valve and sends the closing control signal to the bleed valve. For example, during a detection process, the throttle opening sensor detects that the throttle opening is not zero; the throttle opening sensor sends an opening signal 2, indicating that the throttle opening is zero, to the engine controller. After receiving the opening signal 2, the engine controller generates a closing control signal to close the bleed valve and sends the closing control signal to the bleed valve.

[0039] Understandably, the engine controller can control the blowout valve using either an on / off method or a duty cycle method. When the engine controller uses an on / off method to control the blowout valve, it can achieve full opening or full closing control of the blowout valve, thereby improving the blowout response speed. When the engine controller uses a duty cycle method to control the blowout valve, it can adjust the duty cycle of the blowout valve according to the air pressure in the intercooler, controlling the opening of the blowout valve. This prevents turbocharger surge and maximizes the retention of high-pressure air in the intercooler, providing as much high-pressure air as possible to the engine when the throttle reopens.

[0040] Step S203: Venting valve, used to adjust the switching state according to the control signal to discharge high-pressure air in the intercooler.

[0041] Specifically, the control signal sent by the engine controller to the bleed valve can adjust the opening and closing status of the bleed valve in real time, thereby adjusting the flow of high-pressure air in the intercooler in real time, ensuring that the pressure in the intercooler is within a reasonable range, effectively avoiding the risk of turbocharger surge, while reducing water vapor condensation and water accumulation in the intercooler, avoiding the problem of ice blockage in winter, and ensuring normal engine start-up and operation.

[0042] This application provides a control system, method, and apparatus for a vehicle natural gas engine. A bleed valve is installed between the intercooler and the engine controller, and a throttle opening sensor is installed on the throttle valve to continuously detect the throttle opening and obtain an opening signal characterizing the throttle opening. Based on the opening signal characterizing the throttle opening, the engine controller generates a control signal to control the opening and closing state of the bleed valve and sends the control signal to the bleed valve, causing the bleed valve to adjust its opening and closing state according to the control signal to discharge high-pressure air from the intercooler.

[0043] Optionally, the vent valve in the vehicle's natural gas engine control system is located at the bottom of the intercooler.

[0044] Optionally, if the throttle opening is zero, the engine controller generates an opening control signal to control the opening of the bleed valve and sends the opening control signal to the bleed valve so that the bleed valve adjusts its switch state to open according to the opening control signal, thereby allowing the intercooler to discharge high-pressure air.

[0045] Optionally, the control system of the vehicle's natural gas engine also includes the engine, with the first end of the throttle valve connected to the intercooler and the second end of the throttle valve connected to the engine; if the opening of the throttle valve is greater than zero, the engine controller generates a closing control signal for controlling the vent valve to close, and sends the closing control signal to the vent valve so that the vent valve adjusts its switch state to closed according to the closing control signal, thereby allowing the high-pressure air in the intercooler to enter the engine through the throttle valve.

[0046] Furthermore, the embodiments of this application require minimal modification to existing components; the above-mentioned control method for the vehicle's natural gas engine can be achieved simply by connecting a vent valve between the intercooler and the engine controller.

[0047] Based on the same technological concept Figure 3 This illustration shows a schematic diagram of a control device for a vehicle natural gas engine according to an embodiment of this application. The device is applied to an engine controller in a vehicle natural gas engine control system. The system further includes an intercooler, a bleed valve, and a throttle valve. A throttle valve opening sensor is installed on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. The intercooler supplies high-pressure air to the engine during engine operation. Figure 3 As shown, the device specifically includes: The processing unit 301 is used to generate a control signal for controlling the opening and closing state of the vent valve based on the opening signal. The opening signal is obtained by the throttle opening sensor detecting the opening of the throttle valve, and the opening signal is used to characterize the throttle opening. The transceiver unit 302 is used to send control signals to the vent valve so that the vent valve adjusts its opening and closing state according to the control signal to discharge the high-pressure air in the intercooler.

[0048] Optionally, the vent valve in the vehicle's natural gas engine control system is located at the bottom of the intercooler.

[0049] Optionally, if the throttle opening is zero, the processing unit 301 is specifically used to generate an opening control signal for controlling the opening of the bleed valve, and the transceiver unit 302 is specifically used to send the opening control signal to the bleed valve so that the bleed valve adjusts its switch state to open according to the opening control signal, thereby allowing the intercooler to discharge high-pressure air.

[0050] Optionally, the control system of the vehicle's natural gas engine also includes the engine, with the first end of the throttle valve connected to the intercooler and the second end of the throttle valve connected to the engine; if the opening of the throttle valve is greater than zero, the processing unit 301 is specifically used to: send a closing control signal to control the vent valve to close, and the transceiver unit 302 is specifically used to: send a closing control signal to the vent valve so that the vent valve adjusts its switch state to closed according to the closing control signal, thereby allowing the high-pressure air in the intercooler to enter the engine through the throttle valve.

[0051] This application provides a computer-readable storage medium including a computer program. When the computer program is run on an electronic device, the computer program is used to cause the electronic device to perform the steps of any of the above-described vehicle natural gas engine control methods.

[0052] This application provides a computer program product, which includes a computer program stored in a computer-readable storage medium. When the processor of an electronic device reads the computer program from the computer-readable storage medium, the processor executes the computer program, causing the electronic device to perform the steps of any of the above-described vehicle natural gas engine control methods.

[0053] Based on the same inventive concept, this application also provides an electronic device. In one embodiment, the electronic device may be... Figure 1 The engine controller 103 is shown. In this embodiment, the electronic device can be structured as follows: Figure 4 As shown, it includes a memory 401, a communication module 403, and one or more processors 402.

[0054] The memory 401 is used to store computer programs executed by the processor 402. The memory 401 may mainly include a program storage area and a data storage area. The program storage area may store the operating system and programs required to run instant messaging functions, etc.; the data storage area may store various instant messaging information and operation instruction sets, etc.

[0055] Memory 401 may be volatile memory, such as random-access memory (RAM); memory 401 may also be non-volatile memory, such as read-only memory, flash memory, hard disk drive (HDD), or solid-state drive (SSD); or memory 401 may be any other medium capable of carrying or storing a desired computer program having the form of instructions or data structures and accessible by a computer, but is not limited thereto. Memory 401 may be a combination of the above-described memories.

[0056] The processor 402 may include one or more central processing units (CPUs) or digital processing units, etc. The processor 402 is used to implement the aforementioned control method for the vehicle's natural gas engine when it calls the computer program stored in the memory 401.

[0057] The communication module 403 is used to communicate with electronic devices and other servers.

[0058] This application embodiment does not limit the specific connection medium between the memory 401, communication module 403, and processor 402 described above. This application embodiment... Figure 4 The memory 401 and the processor 402 are connected via a bus 404, and the bus 404 is in Figure 4 The diagram uses thick lines to describe the connections between other components; these are for illustrative purposes only and should not be considered limiting. The 404 bus can be divided into address bus, data bus, control bus, etc. For ease of description, Figure 4 It is described using only a thick line, but does not indicate that there is only one bus or one type of bus.

[0059] The memory 401 stores a computer storage medium containing computer-executable instructions for implementing the vehicle natural gas engine control method of this application embodiment. The processor 402 executes the aforementioned vehicle natural gas engine control method. Based on the same inventive concept, this application embodiment provides a computer-readable storage medium containing computer program product including computer program code. When the computer program code is run on a computer, it causes the computer to execute any of the communication methods discussed above. Since the principle of the computer-readable storage medium in solving the problem is similar to the vehicle natural gas engine control method, the implementation of the aforementioned computer-readable storage medium can be referred to the implementation of the method, and repeated details will not be elaborated further.

[0060] The following reference Figure 5 To describe a computing device 500 according to this embodiment of the present application. Figure 5 The computing device 500 is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0061] like Figure 5 The computing device 500 is manifested in the form of a general-purpose computing device. The components of the computing device 500 may include, but are not limited to: at least one processing unit 501, at least one storage unit 502, and a bus 503 connecting different system components (including storage unit 502 and processing unit 501).

[0062] Bus 503 represents one or more of several bus structures, including a memory bus or memory controller, peripheral bus, processor, or local bus using any of the various bus structures.

[0063] Storage unit 502 may include a readable medium in the form of volatile memory, such as random access memory (RAM) 521 and / or cache memory 522, and may further include read-only memory (ROM) 523.

[0064] Storage unit 502 may also include a program / utility 525 having a set (at least one) of program modules 524, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0065] The computing device 500 can also communicate with one or more external devices 504 (e.g., keyboard, pointing device, etc.), and with one or more devices that enable a user to interact with the computing device 500, and / or with any device that enables the computing device 500 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via the input / output (I / O) interface 505. Furthermore, the computing device 500 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via a network adapter 506. Figure 5 As shown, network adapter 506 communicates with other modules used in computing device 500 via bus 503. It should be understood that, although not shown in the figures, other hardware and / or software modules may be used in conjunction with computing device 500, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0066] This application also provides a computer program product. The methods in this application can be implemented, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, they can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in this application are executed, in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, core network equipment, OAM, or other programmable devices.

[0067] A computer-readable storage medium can be an implementation of a computer program product. That is, this application also provides a computer-readable storage medium that includes a computer program, which, when executed by a processor, implements any of the above-described control methods for a vehicle natural gas engine.

[0068] Computer programs or instructions can be stored in or transferred from one computer-readable storage medium to another. For example, a computer program or instructions can be transferred from one website, computer, server, or data center to another via wired or wireless means. A computer-readable storage medium can be any usable medium that a computer can access, or a data storage device such as a server or data center that integrates one or more usable media. Usable media can be magnetic media, such as floppy disks, hard disks, and magnetic tapes; optical media, such as digital video discs; or semiconductor media, such as solid-state drives. The computer-readable storage medium can be volatile or non-volatile, or may include both types.

[0069] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0070] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0071] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0072] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0073] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A control system for a vehicle natural gas engine, characterized in that, The system includes: an intercooler, a wastegate valve, an engine controller, and a throttle body. A throttle body opening sensor is installed on the throttle body. A first end of the wastegate valve is connected to the intercooler, and a second end of the wastegate valve is connected to the engine controller. Wherein: The throttle opening sensor is used to detect the opening of the throttle and generate an opening signal characterizing the throttle opening. The engine controller is configured to generate a control signal to control the opening and closing state of the bleed valve based on the opening signal, and send the control signal to the bleed valve. The vent valve is used to adjust its switching state according to the control signal in order to discharge the high-pressure air in the intercooler.

2. The system according to claim 1, characterized in that, The vent valve is located at the bottom of the intercooler.

3. The system according to claim 1, characterized in that, If the throttle opening is zero, the engine controller is specifically used for: Generate an opening control signal for controlling the opening of the vent valve, and send the opening control signal to the vent valve; The vent valve is specifically used to adjust the switch state according to the control signal. Adjust the switch state to "on" according to the opening control signal so that the intercooler can discharge high-pressure air.

4. The system according to any one of claims 1 to 3, characterized in that, The system also includes an engine, with a first end of the throttle valve connected to the intercooler and a second end of the throttle valve connected to the engine; if the throttle valve opening is greater than zero, the engine controller is specifically used for: Generate a closing control signal for controlling the vent valve to close, and send the closing control signal to the vent valve; The vent valve is specifically used to adjust the switch state according to the control signal. Adjust the switch state to closed according to the shut-off control signal so that the high-pressure air in the intercooler enters the engine through the throttle valve.

5. A control method for a vehicle natural gas engine, characterized in that, An engine controller is used in a control system for a vehicle's natural gas engine. The system further includes an intercooler, a bleed valve, and a throttle valve. A throttle valve opening sensor is installed on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. The method includes: A control signal is generated based on the opening signal to control the opening and closing state of the vent valve, and the control signal is sent to the vent valve so that the vent valve adjusts its opening and closing state according to the control signal to discharge the high-pressure air in the intercooler. The opening signal is obtained by the throttle opening sensor detecting the opening of the throttle valve, and the opening signal is used to characterize the throttle opening.

6. The method according to claim 5, characterized in that, If the throttle opening is zero, the step of generating a control signal to control the on / off state of the bleed valve based on the opening signal specifically includes: An opening control signal is generated to control the opening of the vent valve, and the opening control signal is sent to the vent valve so that the vent valve adjusts its switch state to open according to the opening control signal.

7. The method according to claim 5 or 6, characterized in that, If the throttle opening is greater than zero, the step of generating a control signal to control the on / off state of the bleed valve based on the opening signal specifically includes: A closing control signal is generated to control the vent valve to close, and the closing control signal is sent to the vent valve so that the vent valve adjusts its switch state to closed according to the closing control signal.

8. A control device for a vehicle natural gas engine, characterized in that, An engine controller is used in a control system for a vehicle's natural gas engine. The system further includes an intercooler, a bleed valve, and a throttle valve. A throttle valve opening sensor is installed on the throttle valve. A first end of the bleed valve is connected to the intercooler, and a second end of the bleed valve is connected to the engine controller. The intercooler supplies high-pressure air to the engine during engine operation. The device includes: The processing unit is used to generate a control signal for controlling the opening and closing state of the vent valve based on the opening signal, wherein the opening signal is obtained by the throttle opening sensor detecting the opening of the throttle valve, and the opening signal is used to characterize the throttle valve opening. The transceiver unit is used to send the control signal to the vent valve so that the vent valve adjusts its opening and closing state according to the control signal to discharge the high-pressure air in the intercooler.

9. A computer-readable storage medium, characterized in that, It includes a computer program that, when run on an electronic device, causes the electronic device to perform the steps of the method of any one of claims 5 to 7.

10. A computer program product, characterized in that, The method includes a computer program stored in a computer-readable storage medium; when a processor of an electronic device reads the computer program from the computer-readable storage medium, the processor executes the computer program, causing the electronic device to perform the steps of the method according to any one of claims 5 to 7.

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