Gas supply device of gas engine, detection method and engine

Abstract

The invention provides a gas supply device of a gas engine, a detection method and the engine, which can be widely applied to the technical field of automatic detection, the gas supply device comprises a gas storage device and a vaporizer; the first heat exchanger is connected with the vaporizer through a first control valve; the first control valve is used for adjusting the flow of the first cooling source; the vaporizer is connected with the combustion chamber through a second control valve, and the second control valve is used for adjusting gas pressure; the first detection device is arranged on an outlet branch of the second control valve; the second detection device is arranged on an inlet branch of the combustion chamber; the control module is used for adjusting the first control valve and / or the second control valve through the detection value of the first detection device and / or the second detection device. The gas supply pressure and the gas supply temperature of the gas engine can be automatically adjusted, the gas supply stability of the engine is improved, and the safety performance of the engine is improved.

Description

Technical Field

[0001] This application relates to the field of automatic detection technology, and more specifically, to a gas engine gas supply device, detection method, and engine. Background Technology

[0002] In gas engine systems, ensuring effective fuel vaporization under all environmental conditions to meet engine operating requirements is a critical technical challenge. To this end, designers typically configure carburetors to have a heating capacity exceeding actual needs in hot environments. However, over time, as the liquid in the system's pipes gradually decreases, transforming into a gas-liquid mixture, the original heating settings may lead to overheating of the gas. In this overheating condition, the gas temperature can soar above 90°C, posing a serious threat to the gas system's seals, potentially causing seal failure, and negatively impacting engine performance. When overheated gas mixes with air, the resulting mixture's temperature rises, which can cause engine knocking, reduce charging efficiency, and affect overall power output and fuel economy. Furthermore, gas pressure control is also a significant issue. Due to factors such as aging pressure regulators, accumulated impurities in the pipes, and clogged filters, gas pressure often deviates from its ideal operating range. Excessively high or low pressures will trigger system fault alarms, such as "high gas pressure" or "low gas pressure" fault codes, thus hindering normal engine operation and reducing equipment reliability and lifespan. Summary of the Invention

[0003] The main objective of this application is to provide a gas engine air supply device, a detection method, and an engine, so as to at least solve the problem that poor temperature and pressure regulation of the gas engine air supply device in the prior art affects engine operation.

[0004] To achieve the above objectives, according to one aspect of this application, a gas engine gas supply device is provided, comprising: a gas storage device for storing fuel; a vaporizer connected to the gas storage device; the vaporizer being connected to a combustion chamber via a second control valve, the second control valve being used to regulate the gas pressure to obtain gas at a preset pressure; a first heat exchanger connected to the vaporizer via the first control valve, the first heat exchanger being used to provide a first cooling source, the first control valve being used to regulate the flow rate of the first cooling source so that the first cooling source heats the fuel through the vaporizer to obtain gas at a preset temperature; a first detection device disposed on the outlet branch of the second control valve to detect the pressure and temperature at the outlet branch of the second control valve; a second detection device disposed on the inlet branch of the combustion chamber to detect the pressure and temperature at the inlet branch of the combustion chamber; and a control module connected to both the first and second detection devices, the control module being connected to both the first and second control valves, and being used to adjust the first and / or second control valves based on the detection values ​​of the first and / or second detection devices. This application uses two pressure and temperature detection devices to detect the pressure and temperature on the gas supply branch. The detected values ​​are used to adjust the first and second control valves, thereby regulating the gas pressure and temperature. This application enables automatic adjustment of the gas supply pressure and temperature of the gas engine, improving the engine's gas supply stability and enhancing its safety performance.

[0005] Optionally, the gas engine gas supply device further includes a second heat exchanger and a booster, both of which are connected to a mixer, and the second control valve is connected to the combustion chamber through the mixer;

[0006] The second heat exchanger is used to provide a second cooling source, and the booster is used to provide air.

[0007] Optionally, the first cooling source includes coolant, and the second cooling source includes exhaust gas.

[0008] Optionally, the second control valve includes an electrically controlled pressure regulating valve;

[0009] The electronically controlled pressure regulating valve is connected to the combustion chamber via an injection valve, and the first detection device is connected to the injection valve.

[0010] Optionally, the injection valve is connected to the combustion chamber via an intake pipe;

[0011] The second detection device is installed on the air intake pipe.

[0012] To achieve the above objectives, according to another aspect of this application, a gas engine gas supply detection method is provided, the method comprising:

[0013] The engine speed, intake pressure before the combustion chamber, intake temperature before the combustion chamber, and gas pressure after the second control valve are obtained; wherein, the second control valve is located between the carburetor and the combustion chamber;

[0014] Based on the rotational speed and the intake pressure, determine the intake temperature threshold and the gas pressure threshold;

[0015] The first control valve and / or the second control valve are adjusted according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold to regulate the intake air temperature and the gas pressure; wherein the first control valve is connected to the vaporizer.

[0016] Optionally, adjusting the first control valve and / or the second control valve based on the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold includes:

[0017] Adjust the first control valve according to the intake air temperature and the intake air temperature threshold.

[0018] or;

[0019] The second control valve is adjusted according to the gas pressure and the gas pressure threshold.

[0020] Optionally, adjusting the first control valve based on the intake air temperature and the intake air temperature threshold includes:

[0021] If the first difference between the intake air temperature and the intake air temperature threshold is less than or equal to the first preset deviation, the first control valve is maintained.

[0022] If the first difference between the intake air temperature and the intake air temperature threshold is greater than the first preset deviation, the first control valve is adjusted; including:

[0023] If the intake air temperature is greater than the intake air temperature threshold, the opening of the first control valve is reduced; if the intake air temperature is less than the intake air temperature threshold, the opening of the first control valve is increased.

[0024] Optionally, after adjusting the first control valve and / or the second control valve according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold, the method further includes:

[0025] Get the cumulative duration;

[0026] If the accumulated time is greater than or equal to the preset time, the accumulated time is cleared, and the engine speed, intake pressure before the combustion chamber, intake temperature before the combustion chamber, and gas pressure after the second control valve are retrieved. The gas pressure and intake temperature are then readjusted.

[0027] According to another aspect of this application, an engine is provided, including the gas engine supply device described above, and the gas supply is detected and regulated by the gas engine supply detection method described above.

[0028] By applying the technical solution of this application, the pressure and temperature on the gas supply branch are detected by two pressure and temperature detection devices. The first and second control valves are adjusted based on the detected values, thereby regulating the gas pressure and temperature. This application enables automatic regulation of the gas supply pressure and temperature of the gas engine, improving the engine's gas supply stability and enhancing its safety performance. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 A schematic diagram of a gas engine gas supply device provided in an embodiment of this application is shown;

[0031] Figure 2 A schematic diagram of another gas engine gas supply device provided in an embodiment of this application is shown;

[0032] Figure 3 A schematic flowchart of a gas engine gas supply detection method provided in an embodiment of this application is shown.

[0033] Figure 4 A schematic diagram of a temperature detection process according to an embodiment of this application is shown;

[0034] Figure 5 A schematic flowchart of a pressure detection process according to an embodiment of this application is shown.

[0035] The above figures refer to the following reference numerals:

[0036] 11. Gas storage device; 12. Carburetor; 131. First control valve; 132. Second control valve; 14. Injection valve; 15. Intake pipe; 16. Combustion chamber; 171. First detection device; 172. Second detection device; 18. Control module; 19. First heat exchanger. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] First, let me explain the terms used in this application:

[0041] Carburetor: A device that heats liquid fuel using engine coolant, causing the fuel to vaporize from a liquid state into a gaseous state.

[0042] As described in the background section, in related technologies:

[0043] The gas temperature and pressure supplied by the existing gas engine gas supply device cannot be adjusted in real time according to demand. The gas temperature generally varies in the range of (-30 to 90)℃. The pressure regulator is a mechanical pressure regulating valve, which can only output one pressure and cannot be adjusted according to the actual gas pressure changes.

[0044] To ensure the carburetor can heat the fuel to the engine's operating temperature even at low temperatures, its heating capacity is excessive when hot. After fuel has been used for a period of time, the fuel in the pipeline is mostly a gas-liquid mixture, reducing the need for vaporization and leading to fuel overheating. In some cases, the gas temperature can reach over 90°C. Excessively high gas temperatures can affect the sealing reliability of gas system components. When mixed with air, the resulting gas mixture will have a higher temperature, leading to problems such as knocking and low charging efficiency.

[0045] Gas pressure is affected by the aging of the pressure regulator and the resistance of pipelines and filters, often exceeding the normal range, reporting fault codes for high or low gas pressure, causing the engine to malfunction.

[0046] To address the aforementioned problems, embodiments of this application provide a gas engine gas supply device. This device uses two pressure and temperature detection devices to monitor the pressure and temperature on the gas supply branch. The detected values ​​are used to adjust a first control valve and a second control valve, thereby regulating the gas pressure and temperature. This application enables automatic adjustment of the gas engine's supply pressure and temperature, improving engine gas supply stability and enhancing engine safety.

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0048] Figure 1 This is a schematic diagram of a gas engine supply device according to an embodiment of this application. The gas engine includes:

[0049] Gas storage device 11 is used to store fuel;

[0050] The vaporizer 12 is connected to the gas storage device; the vaporizer is connected to the combustion chamber 16 through the second control valve 132, which is used to adjust the gas pressure to obtain gas at a preset pressure.

[0051] The first heat exchanger 19 is connected to the vaporizer via the first control valve 131. The first heat exchanger is used to provide a first cooling source, and the first control valve is used to adjust the flow rate of the first cooling source so that the first cooling source heats the fuel through the vaporizer to obtain gas at a preset temperature.

[0052] A first detection device 171 is installed on the outlet branch of the second control valve to detect the pressure and temperature at the outlet branch of the second control valve; a second detection device 172 is installed on the inlet branch of the combustion chamber to detect the pressure and temperature at the inlet branch of the combustion chamber.

[0053] The control module 18 is connected to both the first detection device and the second detection device, and is also connected to both the first control valve and the second control valve. It is used to adjust the first control valve and / or the second control valve based on the detection values ​​of the first detection device and / or the second detection device.

[0054] like Figure 2In one embodiment shown, the gas cylinder, or gas storage device, is used to store liquid fuel. The coolant flow control valve is the first control valve, the coolant and engine outlet pipe constitute the first heat exchanger, and the coolant is the first cooling source. The electronically controlled pressure regulating valve is the second control valve. The gas pressure and temperature sensor is the first detection device, the intake air pressure and temperature sensor is the second detection device, and the electronic control unit (ECU) is the control module. In this application, the preset pressure can be the optimal / ideal pressure obtained based on the current engine operating conditions. The second control valve is adjusted by comparing the detected pressure with the preset pressure. Similarly, the preset temperature in this application can be the optimal / ideal temperature obtained based on the current engine operating conditions. The first control valve is adjusted by comparing the detected temperature with the preset temperature. Of course, this application can also comprehensively analyze the detected temperature, pressure, preset pressure, and preset temperature to adjust the first and / or second control valves. The first and second control valves in this application can be any valve capable of automatically adjusting its opening; this application does not limit the specific type of control valve. It is understood that the gas engine in this application can be a natural gas engine, a biogas engine, a coal gas engine, a hydrogen engine, a methanol engine, etc., and this application does not limit the specific type of gas. This application, through the design of a pressure and temperature detection device and a control valve, achieves automatic adjustment of the air intake device to obtain suitable pressure and temperature, thereby improving the engine's operational stability.

[0055] Optionally, the gas engine gas supply device further includes a second heat exchanger and a booster, both of which are connected to a mixer, and the second control valve is connected to the combustion chamber through the mixer;

[0056] The second heat exchanger is used to provide a second cooling source, and the booster is used to provide air.

[0057] Figure 2 The EGR cooler, or second heat exchanger, is used in the combustion chamber to mix air, exhaust gas, and fuel gas. The second cooling source can be exhaust gas, used to heat the air and cool the exhaust gas.

[0058] Optionally, the first cooling source includes coolant, and the second cooling source includes exhaust gas, both of which originate from a gas engine.

[0059] In this application, the first cooling source can be a coolant, such as cooling water. The liquid fuel is heated by a vaporizer, and the cooling water is cooled to achieve the vaporization of the liquid fuel for subsequent combustion.

[0060] Optionally, the second control valve includes an electrically controlled pressure regulating valve;

[0061] The electronically controlled pressure regulating valve is connected to the combustion chamber via an injection valve, and the first detection device is connected to the injection valve.

[0062] Optionally, the injection valve 14 is connected to the combustion chamber via the intake pipe 15;

[0063] The second detection device is installed on the intake pipe to measure the temperature and pressure of the gas inside the intake pipe and in front of the combustion chamber.

[0064] To achieve the above objectives, according to another aspect of this application, a gas engine gas supply detection method is provided, applicable to the aforementioned gas engine gas supply device, with reference to... Figure 3 The method includes:

[0065] Step S100: Obtain the engine speed, the intake pressure before the combustion chamber, the intake temperature before the combustion chamber, and the gas pressure after the second control valve; wherein, the second control valve is located between the carburetor and the combustion chamber;

[0066] Step S200: Determine the intake temperature threshold and the gas pressure threshold based on the rotational speed and the intake pressure;

[0067] Step S300: Adjust the first control valve and / or the second control valve according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold to adjust the intake air temperature and the gas pressure; wherein the first control valve is connected to the vaporizer.

[0068] according to Figure 2 The installation location of the intake pressure and temperature sensor measures the intake pressure and temperature before the combustion chamber; according to... Figure 2 The gas pressure and temperature sensor is installed at the location of the gas pressure sensor to measure the gas pressure after the second control valve. In some embodiments, the intake temperature threshold and gas pressure threshold are determined by looking up a MAP table based on the rotational speed and the intake pressure. In this application, the intake temperature threshold is the preset temperature, and the gas pressure threshold is the preset pressure. This application adjusts the first control valve and / or the second control valve by analyzing the intake temperature, the gas pressure, the intake temperature threshold, and the gas pressure threshold, thereby adjusting the gas pressure and gas temperature.

[0069] Optionally, adjusting the first control valve and / or the second control valve based on the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold includes:

[0070] Adjust the first control valve according to the intake air temperature and the intake air temperature threshold.

[0071] or;

[0072] The second control valve is adjusted according to the gas pressure and the gas pressure threshold.

[0073] This application can compare the intake air temperature and the intake air temperature threshold separately, and adjust the first control valve based on the comparison result; it can also compare the gas pressure and the gas pressure threshold separately, and adjust the second control valve based on the comparison result. In another embodiment, this application can integrate the intake air temperature, gas pressure, intake air temperature threshold, and gas pressure threshold, analyze the interaction between temperature and pressure, and adjust the first control valve and / or the second control valve. This application does not limit the specific logic of the adjustment.

[0074] Optionally, adjusting the first control valve based on the intake air temperature and the intake air temperature threshold includes:

[0075] If the first difference between the intake air temperature and the intake air temperature threshold is less than or equal to the first preset deviation, the first control valve is maintained.

[0076] If the first difference between the intake air temperature and the intake air temperature threshold is greater than the first preset deviation, the first control valve is adjusted; including:

[0077] If the intake air temperature is greater than the intake air temperature threshold, the opening of the first control valve is reduced; if the intake air temperature is less than the intake air temperature threshold, the opening of the first control valve is increased.

[0078] Similarly, the adjustment methods for gas pressure and gas pressure threshold are the same as those for intake air temperature.

[0079] Optionally, if the intake air temperature is greater than the intake air temperature threshold, reducing the opening of the first control valve includes:

[0080] Based on the first difference, determine the opening difference;

[0081] If the intake air temperature is greater than the intake air temperature threshold, a first opening is obtained, and the opening of the first control valve is reduced by the first opening based on the first opening; the first opening is the opening of the first control valve before the opening is adjusted.

[0082] In this application, the opening difference and the first difference can be set to be positively correlated.

[0083] Optionally, after adjusting the first control valve and / or the second control valve according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold, the method further includes:

[0084] The cumulative duration is obtained; the cumulative duration is the time elapsed since the last pressure and temperature adjustment. In some embodiments, the cumulative duration is the time elapsed since the last pressure adjustment; in other embodiments, the cumulative duration is the time elapsed since the last temperature adjustment. The preset duration is the duration between two consecutive pressure and temperature adjustments, i.e., the adjustment period; of course, the adjustment period corresponding to pressure adjustment and the adjustment period corresponding to temperature adjustment can be different, and those skilled in the art can set it according to actual needs.

[0085] If the accumulated time is greater than or equal to the preset time, the accumulated time is cleared, and the engine speed, intake pressure before the combustion chamber, intake temperature before the combustion chamber, and gas pressure after the second control valve are retrieved. The gas pressure and intake temperature are then readjusted.

[0086] According to another aspect of this application, an engine is provided, including the gas engine supply device described above, and the gas supply is detected and regulated by the gas engine supply detection method described above.

[0087] By applying the technical solution of this application, the pressure and temperature on the gas supply branch are detected by two pressure and temperature detection devices. The first and second control valves are adjusted based on the detected values, thereby regulating the gas pressure and temperature. This application enables automatic regulation of the gas supply pressure and temperature of the gas engine, improving the engine's gas supply stability and enhancing its safety performance.

[0088] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the gas engine gas supply device of this application will be described in detail below with reference to specific embodiments.

[0089] This proposal provides a gas engine gas supply device with adjustable gas temperature and pressure, which solves the problems of excessively high or low gas temperature and unstable gas pressure in existing gas engines, so that the engine performance is always at its best.

[0090] The system structure provided in this application includes the following components: coolant flow control valve, carburetor, gas pressure and temperature sensor, intake air pressure and temperature sensor, electronically controlled pressure regulating valve, and electronic control unit. The gas supply system layout is as follows: Figure 2 As shown, the electronic control unit collects temperature and pressure signals in real time and compares them with the set values. Based on the deviation value, it feeds back the adjustment command to the coolant flow control and electronic pressure regulating valve for closed-loop correction, so that the gas temperature and pressure are always close to the set values ​​and the engine works in the best condition.

[0091] The control strategy provided in this application:

[0092] I. Gas temperature closed-loop control, refer to Figure 4As shown, it includes the following steps:

[0093] 1. The optimal intake air temperature is calibrated based on engine speed and intake manifold pressure.

[0094] 2. Compare the current intake temperature measurement value t1 / intake temperature with the intake temperature requirement value t2 / intake temperature threshold obtained from the table. If the deviation between the intake temperature measurement value t1 and the requirement value t2 / first difference is less than δt / first preset difference, the opening of the coolant flow control valve remains at the current value.

[0095] 3. If the deviation between the measured intake air temperature t1 and the required value t2 is greater than δt, proceed to the next step. If the measured value t1 is less than the required value t2, the current intake air temperature is too low, and the opening of the coolant flow control valve needs to be increased by δn. If the measured value t1 is greater than the required value t2, the current intake air temperature is too high, and the opening of the coolant flow control valve needs to be decreased by δn.

[0096] 4. After each judgment, the ECU starts timing / accumulating the duration. After time t0 / preset duration, it enters the next judgment cycle.

[0097] II. Gas pressure closed-loop control, refer to... Figure 5 As shown, it includes the following steps:

[0098] 1. The optimal value of the gas pressure is determined based on the engine speed and intake manifold pressure.

[0099] 2. Compare the current operating condition gas measurement value f1 / gas pressure with the gas pressure demand value f2 / gas pressure threshold obtained from the table. If the deviation between the gas pressure measurement value f1 and the demand value f2 is less than δf, the coolant flow control valve opening remains at the current value.

[0100] 3. If the deviation between the measured gas pressure value f1 and the required value f2 is greater than δf, proceed to the next step. If the measured value f1 is less than the required value f2, the current gas pressure is too low, and the opening of the electronic pressure regulating valve needs to be increased by δn. If the measured value f1 is greater than the required value f2, the current gas pressure is too high, and the opening of the electronic pressure regulating valve needs to be decreased by δn.

[0101] 4. After each judgment, the ECU starts timing. After time t0, it enters the next judgment cycle.

[0102] This application improves charging efficiency, reduces engine knocking, and lowers gas consumption by precisely controlling gas temperature and intake air temperature. It also improves the accuracy and consistency of gas injection by precisely controlling gas pressure, thereby enhancing the gas pressure adaptability of the gas supply system and reducing after-sales maintenance costs.

[0103] It is understood that the system and method provided in this application can be used in LNG natural gas engines as well as CNG natural gas engines. By replacing the mechanical pressure reducer with an electronically controlled pressure reducer valve, and having the electronic control unit control the opening degree of the electronically controlled pressure reducer valve and the amount of coolant flow, precise regulation and control of the gas temperature and pressure of CNG natural gas engines can be achieved.

[0104] It should be noted that the above are merely illustrative examples and do not specifically limit the composition or detection logic of this gas engine gas supply device.

[0105] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0106] 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.

[0107] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will 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... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0108] 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.

[0109] 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.

[0110] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0111] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0112] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0113] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0115] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas engine gas supply device, characterized in that, The gas engine gas supply device includes: Gas storage device (11) for storing fuel; A vaporizer (12) is connected to the gas storage device (11); the vaporizer (12) is connected to the combustion chamber (16) through a second control valve (132), which is used to adjust the gas pressure to obtain gas at a preset pressure; The first heat exchanger (19) is connected to the vaporizer (12) via the first control valve (131). The first heat exchanger is used to provide a first cooling source, and the first control valve is used to adjust the flow rate of the first cooling source so that the first cooling source heats the fuel through the vaporizer to obtain gas at a preset temperature. The first detection device (171) is installed on the outlet branch of the second control valve (132) to detect the pressure and temperature at the outlet branch of the second control valve; the second detection device (172) is installed on the inlet branch of the combustion chamber to detect the pressure and temperature at the inlet branch of the combustion chamber. The control module (18) is connected to both the first detection device (171) and the second detection device (172), and is also connected to both the first control valve (131) and the second control valve (132). The control module (18) is used to adjust the first control valve and / or the second control valve based on the detection values ​​of the first detection device and / or the second detection device.

2. The gas engine gas supply device according to claim 1, characterized in that, The gas engine air supply device also includes a second heat exchanger for providing a second cooling source and a booster for providing air. The second heat exchanger and the booster are both connected to a mixer. The second control valve (132) is connected to the combustion chamber (16) through the mixer.

3. The gas engine gas supply device according to claim 2, characterized in that, The first cooling source includes coolant, and the second cooling source includes exhaust gas, both of which originate from a gas engine.

4. The gas engine gas supply device according to claim 1, characterized in that, The second control valve (132) includes an electrically controlled pressure regulating valve; The electronically controlled pressure regulating valve is connected to the combustion chamber (16) via the injection valve (14), and the first detection device (171) is connected to the injection valve (14).

5. The gas engine gas supply device according to claim 4, characterized in that, The injection valve (14) is connected to the combustion chamber (16) via the intake pipe (15); The second detection device (172) is disposed on the air intake pipe (15).

6. A method for detecting gas engine supply, applicable to the gas engine supply device as described in any one of claims 1 to 5, characterized in that, The method includes: The engine speed, intake pressure before the combustion chamber, intake temperature before the combustion chamber, and gas pressure after the second control valve are obtained; wherein, the second control valve is located between the carburetor and the combustion chamber; Based on the rotational speed and the intake pressure, determine the intake temperature threshold and the gas pressure threshold; The first control valve and / or the second control valve are adjusted according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold to regulate the intake air temperature and the gas pressure; wherein the first control valve is connected to the vaporizer.

7. The method according to claim 6, characterized in that, The step of adjusting the first control valve and / or the second control valve based on the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold includes: The first control valve is adjusted according to the intake air temperature and the intake air temperature threshold to regulate the intake air temperature. or; The second control valve is adjusted according to the gas pressure and the gas pressure threshold to regulate the gas pressure.

8. The method according to claim 7, characterized in that, The step of adjusting the first control valve based on the intake air temperature and the intake air temperature threshold includes: If the first difference between the intake air temperature and the intake air temperature threshold is less than or equal to the first preset deviation, the opening of the first control valve is maintained. If the first difference between the intake air temperature and the intake air temperature threshold is greater than the first preset deviation, the opening of the first control valve is adjusted; including: If the intake air temperature is greater than the intake air temperature threshold, the opening of the first control valve is reduced; if the intake air temperature is less than the intake air temperature threshold, the opening of the first control valve is increased.

9. The method according to claim 6, characterized in that, After adjusting the first control valve and / or the second control valve according to the intake air temperature, the gas pressure, the intake air temperature threshold, and the gas pressure threshold, the method further includes: Get the cumulative duration; the cumulative duration is the time elapsed since the last pressure and temperature adjustment; If the accumulated time is greater than or equal to the preset time, the accumulated time is cleared, and the engine speed, intake pressure before the combustion chamber, intake temperature before the combustion chamber, and gas pressure after the second control valve are retrieved. The gas pressure and intake temperature are then readjusted.

10. An engine, characterized in that, The engine includes a gas engine supply device as described in any one of claims 1 to 5, and the gas engine supply detection and adjustment are performed by a gas engine supply detection method as described in any one of claims 6 to 9.

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