Methanol ejector control method and related device

Abstract

The invention discloses a methanol injector control method and a related device, which can be applied to computer equipment with methanol injector control capability, and the method comprises the following steps: acquiring a conventional voltage parameter and a counter-pull voltage parameter; and according to the conventional voltage parameters, a needle valve of the methanol ejector is pulled up by applying conventional voltage indicated by the conventional voltage parameters. In the falling process of the needle valve, according to the counter-pull voltage parameters, counter-pull voltage indicated by the counter-pull voltage parameters is applied, and acting force corresponding to the counter-pull voltage is applied to the needle valve. Therefore, the counter-pull voltage indicated by the counter-pull voltage parameter is applied, the acting force is applied to the needle valve, the needle valve is subjected to the acting force opposite to the falling direction in the falling process, the speed of the needle valve falling to the valve seat is reduced, the impact degree on the valve seat is reduced, the problem of valve seat abrasion caused by high-speed impact is solved, and the service life of the needle valve is prolonged. Therefore, the service life of the methanol injector is prolonged, and the reliability of the methanol injector is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a methanol injector control method and related devices. Background Art

[0002] With the continuous improvement of environmental protection and energy efficiency requirements, methanol, as a clean energy, not only has the advantage of less emissions after combustion, but also has a wide range of sources and can effectively alleviate the problem of fossil fuel shortage. The application of methanol in engines has received more and more attention. As the core component of methanol engines, the reliability of methanol injectors is very important.

[0003] In the related art, the needle valve in the methanol injector is usually lifted to control the injection of fuel by the electromagnetic effect brought by the voltage application. However, after the voltage application is completed, the needle valve falls, which causes the valve seat reliability of the methanol injector to decrease. Summary of the invention

[0004] In view of the above problems, the present application provides a methanol injector control method and related devices, which are used to solve the problem that after the voltage application ends, the needle valve falling process will cause the valve seat reliability of the methanol injector to decrease.

[0005] Based on this, this application discloses the following technical solutions:

[0006] In a first aspect, the present application provides a methanol injector control method, the method comprising:

[0007] Get normal voltage parameters and reverse pull voltage parameters;

[0008] According to the conventional voltage parameter, by applying a conventional voltage indicated by the conventional voltage parameter, a needle valve of a methanol injector is pulled up, the needle valve being a component for controlling fuel injection;

[0009] During the falling process of the needle valve, according to the back-pull voltage parameter, by applying the back-pull voltage indicated by the back-pull voltage parameter, a force corresponding to the back-pull voltage is applied to the needle valve, and the direction of the force is opposite to the falling direction of the needle valve.

[0010] Optionally, the back-pull voltage parameter includes a first back-pull voltage parameter and a second back-pull voltage parameter, and applying a back-pull voltage indicated by the back-pull voltage parameter to apply a force corresponding to the back-pull voltage to the needle valve according to the back-pull voltage parameter, comprises:

[0011] According to the first back-pull voltage parameter, by applying a first back-pull voltage indicated by the first back-pull voltage parameter, a force corresponding to the first back-pull voltage is applied to the needle valve;

[0012] After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, a second reverse pull voltage indicated by the second reverse pull voltage parameter is applied to apply a force corresponding to the second reverse pull voltage to the needle valve.

[0013] Optionally, after the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, applying a second reverse pull voltage indicated by the second reverse pull voltage parameter to apply a force corresponding to the second reverse pull voltage to the needle valve includes:

[0014] After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, acquiring the falling speed of the needle valve;

[0015] According to the falling speed, adjusting the second reverse pull voltage parameter to obtain a third reverse pull voltage parameter;

[0016] By applying the third reverse pull voltage indicated by the third reverse pull voltage parameter, a force corresponding to the third reverse pull voltage is applied to the needle valve.

[0017] Optionally, the reverse pull voltage parameter includes a reverse pull voltage value, and the reverse pull voltage value is obtained in the following manner:

[0018] Acquire a first corresponding relationship between a pressure difference value and the reverse pull voltage value, and the pressure difference value, wherein the pressure difference value is used to characterize the difference between the fuel pressure and the intake pressure, wherein the fuel pressure is the force applied to the needle valve in the same direction as the falling direction, and the intake pressure is the force applied to the needle valve in the opposite direction as the falling direction;

[0019] Determine the reverse pull voltage value according to the pressure difference value and based on the first corresponding relationship, wherein the greater the pressure difference value is, the greater the reverse pull voltage value is;

[0020] The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises:

[0021] According to the back-pull voltage value, the back-pull voltage is applied according to the back-pull voltage value, so that a force corresponding to the back-pull voltage is applied to the needle valve.

[0022] Optionally, the reverse pull voltage parameter includes the reverse pull voltage value, a waiting time and a maintaining time, wherein the waiting time is the time interval from the end of the application of the conventional voltage to the start of the application of the reverse pull voltage, and the maintaining time is the time duration for which the reverse pull voltage is continuously applied, and the waiting time and the maintaining time are obtained by:

[0023] Acquire a second corresponding relationship between the pressure difference and the waiting time, a third corresponding relationship between the pressure difference and the maintaining time, and the pressure difference;

[0024] Determine the waiting time according to the pressure difference and based on the second corresponding relationship, wherein the greater the pressure difference, the shorter the waiting time;

[0025] Determine the maintenance time according to the pressure difference and based on the third corresponding relationship, wherein the greater the pressure difference is, the shorter the maintenance time is;

[0026] The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises:

[0027] According to the waiting time, after the reverse pull voltage indicated by the reverse pull voltage parameter is applied, wait for the waiting time;

[0028] In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, the reverse pull voltage is applied, and a force corresponding to the reverse pull voltage is applied to the needle valve.

[0029] Optionally, the method further comprises:

[0030] If the waiting time is greater than or equal to a first preset time, increase the maintenance time to obtain an updated maintenance time, wherein the first preset time is used to indicate that the waiting time is too long;

[0031] If the waiting time is less than or equal to a second preset time, reduce the initial maintenance time to obtain the updated maintenance time, the second preset time is used to indicate that the waiting time is too short, and the second preset time is less than the first preset time;

[0032] If the waiting time is greater than the second preset time and less than the first preset time, the maintaining time is determined as the updated maintaining time;

[0033] In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, applying the reverse pull voltage, and applying a force corresponding to the reverse pull voltage to the needle valve, including:

[0034] In response to the end of the waiting process, according to the updated maintenance time, by maintaining the updated maintenance time, the back-pull voltage is applied according to the back-pull voltage value, and a force corresponding to the back-pull voltage is applied to the needle valve.

[0035] In a second aspect, the present application provides a methanol injector control device, the device comprising: an acquisition unit, a pull-up unit and a reverse pull unit;

[0036] The acquisition unit is used to acquire the normal voltage parameters and the reverse pull voltage parameters;

[0037] The lifting unit is used to lift the needle valve of the methanol injector according to the conventional voltage parameter by applying a conventional voltage indicated by the conventional voltage parameter, wherein the needle valve is a component for controlling fuel injection;

[0038] The back-pull unit is used to apply a force corresponding to the back-pull voltage to the needle valve during the falling process of the needle valve, according to the back-pull voltage parameter, by applying a back-pull voltage indicated by the back-pull voltage parameter, and the direction of the force is opposite to the falling direction of the needle valve.

[0039] In a third aspect, the present application provides a computer device, the computer device comprising a processor and a memory:

[0040] The memory is used to store a computer program and transmit the computer program to the processor;

[0041] The processor is configured to execute the method described in any one of the first aspects according to the computer program.

[0042] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method described in any one of the first aspects.

[0043] In a fifth aspect, the present application provides a computer program product comprising a computer program, characterized in that when the computer program product is run on a computer device, the computer device is enabled to execute any one of the methods described in the first aspect.

[0044] It can be seen from the above technical solutions that the present application has at least the following beneficial effects:

[0045] The present application no longer allows the needle valve to fall freely to impact the valve seat after the voltage drive ends, but applies force during the falling process to reduce the impact and wear on the valve seat, which is explained in detail below.

[0046] Acquiring conventional voltage parameters and reverse pull voltage parameters can ensure that the control process of the methanol injector is accurately executed according to the voltage parameter indication. According to the conventional voltage parameters, by applying the conventional voltage indicated by the conventional voltage parameters, the needle valve of the methanol injector is pulled up, and methanol is injected based on the needle valve being pulled up, thereby ensuring the fuel supply demand of the methanol engine. In the process of the needle valve falling, according to the reverse pull voltage parameters, by applying the reverse pull voltage indicated by the reverse pull voltage parameters, a force is applied to the needle valve, so that the needle valve is subjected to a force opposite to the falling direction during the falling process, reducing the speed of the needle valve falling to the valve seat, reducing the impact degree on the valve seat, and reducing the valve seat wear problem caused by high-speed impact, thereby extending the service life of the methanol injector and improving the reliability of the methanol injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A cross-sectional schematic diagram of a methanol injector provided in the present application;

[0049] Figure 2 A schematic diagram of a conventional voltage waveform provided in this application;

[0050] Figure 3 A method flow chart of a methanol injector control method provided in the present application;

[0051] Figure 4 A waveform diagram of a reverse pull voltage applied provided in this application;

[0052] Figure 5 A device structure diagram of a methanol injector control device provided in this application;

[0053] Figure 6 A structural diagram of a computer device provided for this application. DETAILED DESCRIPTION

[0054] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0055] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0056] The methanol injector control method provided in this application can be applied to computer devices with methanol injector control capabilities, such as terminal devices and servers. Specifically, the terminal device can be an electronic control unit, a desktop computer, etc.; the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, and this application does not limit this.

[0057] See also Figure 1 , Figure 1 This is a cross-sectional schematic diagram of a methanol injector provided by the present application. The elastic member 101 is connected to the needle valve 102. The needle valve can be lifted by applying a voltage (the voltage can act on the elastic member to lift the needle valve through the elastic member) to start the fuel injection process. When the voltage application ends, it falls on the valve seat 103. During the fuel injection process, in addition to the force corresponding to the voltage, the needle valve will also be affected by environmental factors such as the fuel pressure in the same direction as the falling direction and the intake pressure in the opposite direction of the falling direction.

[0058] See also Figure 2 , Figure 2 A waveform diagram of a conventional voltage provided for the present application. The conventional voltage may include a high potential voltage and a low potential voltage. The high potential voltage is used to quickly pull up the needle valve, and the low potential voltage is used to maintain the pulled-up state of the needle valve. It can be seen that after the conventional voltage is applied, the conventional voltage value quickly drops to 0 volts (V), so the force corresponding to the conventional voltage will quickly disappear, and the needle valve will fall freely, and will fall towards the valve seat at a very high speed, causing great wear on the valve seat, thereby affecting the service life of the valve seat and causing the reliability of the methanol injector to decrease.

[0059] Therefore, the present application provides a methanol injector control method and related devices. The present application no longer allows the needle valve to fall freely to impact the valve seat after the voltage drive ends, but applies force during the falling process to reduce the impact and wear on the valve seat and improve the reliability of the methanol injector. This is explained in detail below.

[0060] Acquiring conventional voltage parameters and reverse pull voltage parameters can ensure that the control process of the methanol injector is accurately executed according to the voltage parameter indication. According to the conventional voltage parameters, by applying the conventional voltage indicated by the conventional voltage parameters, the needle valve of the methanol injector is pulled up, and methanol is injected based on the needle valve being pulled up, thereby ensuring the fuel supply demand of the methanol engine. In the process of the needle valve falling, according to the reverse pull voltage parameters, by applying the reverse pull voltage indicated by the reverse pull voltage parameters, a force is applied to the needle valve, so that the needle valve is subjected to a force opposite to the falling direction during the falling process, reducing the speed of the needle valve falling to the valve seat, reducing the impact degree on the valve seat, and reducing the valve seat wear problem caused by high-speed impact, thereby extending the service life of the methanol injector and improving the reliability of the methanol injector.

[0061] See also Figure 3 , Figure 3 A method flow chart of a methanol injector control method provided in the present application, the method may include S301-S303:

[0062] S301: Obtain normal voltage parameters and reverse pull voltage parameters.

[0063] The normal voltage parameters are a set of parameters indicating a normal voltage application process, and the reverse pull voltage parameters are a set of parameters indicating a reverse pull voltage application process.

[0064] S302: According to the normal voltage parameters, the needle valve of the methanol injector is pulled up by applying a normal voltage indicated by the normal voltage parameters.

[0065] Among them, the needle valve is a component that controls fuel injection.

[0066] According to conventional voltage parameters, a command is sent to the methanol injector to generate a force for pulling up the needle valve through electromagnetic action. Conventional voltage can generally include a high potential voltage for quickly pulling up the needle valve, and a low potential voltage for maintaining the needle valve in the pulled-up state. For example, according to conventional voltage parameters, a high potential voltage of 50V is applied to quickly pull up the needle valve, and then a low potential voltage of 25V is applied to maintain the pulled-up state of the needle valve, and in response to the pulling up of the needle valve, fuel begins to be injected.

[0067] When the application of the normal voltage ends, the voltage value usually returns to 0V, and the needle valve is no longer subjected to the force corresponding to the normal voltage for pulling up, and begins to fall under the action of gravity. Therefore, by applying the normal voltage indicated by the normal voltage parameter, the needle valve of the methanol injector is pulled up, and methanol is injected based on the needle valve pulling up, thereby ensuring the fuel supply demand of the methanol engine.

[0068] S303: During the falling process of the needle valve, according to the back-pull voltage parameter, a back-pull voltage indicated by the back-pull voltage parameter is applied to apply a force corresponding to the back-pull voltage to the needle valve.

[0069] In response to the end of the implementation of the conventional voltage, the needle valve begins to fall under the action of gravity. During the falling process of the needle valve, an instruction is sent to the methanol injector according to the back-pull voltage parameter, and a force is generated through electromagnetic action to slow down the falling speed of the needle valve. The direction of the force is opposite to the falling direction of the needle valve.

[0070] For example, according to the back-pull voltage parameters, 10 milliseconds (ms) after the normal voltage application ends, when the back-pull voltage begins to be applied, the falling speed of the needle valve is 5 meters per second (m / s), and a 20V back-pull voltage is applied. The force corresponding to the 20V back-pull voltage is applied to the needle valve, and the falling speed of the needle valve is 3m / s, so that the speed at which the needle valve falls into the valve seat is smaller than the speed at which it falls into the valve seat when no back-pull voltage is applied.

[0071] See also Figure 4 , Figure 4 A waveform diagram of a reverse pull voltage applied in this application is provided. After the conventional voltage is applied, the reverse pull voltage is applied after a waiting time, and the maintenance time is the maintenance time. By applying the reverse pull voltage, a force opposite to the falling direction of the needle valve is applied to the needle valve, which reduces the speed at which the needle valve falls into the valve seat, reduces the impact on the valve seat, reduces the degree of wear of the valve seat, and improves the reliability of the methanol injector.

[0072] Therefore, the present application provides a methanol injector control method, which no longer allows the needle valve to fall freely to impact the valve seat after the voltage drive ends, but instead applies force during the falling process to reduce the impact and wear on the valve seat and improve the reliability of the methanol injector, which is explained in detail below.

[0073] Acquiring conventional voltage parameters and reverse pull voltage parameters can ensure that the control process of the methanol injector is accurately executed according to the voltage parameter indication. According to the conventional voltage parameters, by applying the conventional voltage indicated by the conventional voltage parameters, the needle valve of the methanol injector is pulled up, and methanol is injected based on the needle valve being pulled up, thereby ensuring the fuel supply demand of the methanol engine. In the process of the needle valve falling, according to the reverse pull voltage parameters, by applying the reverse pull voltage indicated by the reverse pull voltage parameters, a force is applied to the needle valve, so that the needle valve is subjected to a force opposite to the falling direction during the falling process, reducing the speed of the needle valve falling to the valve seat, reducing the impact degree on the valve seat, and reducing the valve seat wear problem caused by high-speed impact, thereby extending the service life of the methanol injector and improving the reliability of the methanol injector.

[0074] This application provides a method of applying multiple sections of pull-back voltage, see A1-A2:

[0075] A1: According to the first back-pull voltage parameter, a first back-pull voltage indicated by the first back-pull voltage parameter is applied to apply a force corresponding to the first back-pull voltage to the needle valve.

[0076] The first pull-back voltage parameter is a parameter set indicating the first pull-back voltage application process.

[0077] A2: After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, a second reverse pull voltage indicated by the second reverse pull voltage parameter is applied to apply a force corresponding to the second reverse pull voltage to the needle valve.

[0078] The second pull-back voltage parameter is a parameter set indicating a second pull-back voltage application process. The second pull-back voltage application process is later than the first pull-back voltage application process.

[0079] For example, according to the first back-pull voltage parameter and the second back-pull voltage parameter, during the falling process of the needle valve, a first back-pull voltage of 6V is first applied and maintained for 5ms. 2ms after the application of the first back-pull voltage is completed, a second back-pull voltage of 4V is applied and maintained for 2ms to continue to slow down the falling speed of the needle valve.

[0080] By applying multiple sections of reverse pull voltage, the falling speed of the needle valve can be slowed down more accurately and multiple times, so that the falling process of the needle valve can be decelerated more smoothly, thereby reducing the impact on the valve seat.

[0081] In a possible implementation, the present application also provides a specific implementation of applying multiple sections of pull-back voltage, see B1-B3:

[0082] B1: After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, the falling speed of the needle valve is obtained.

[0083] The falling speed is the speed of the needle valve during the falling process, which can be obtained by a sensor or other monitoring equipment. For example, after the first reverse pull voltage is applied, the falling speed of the needle valve can be immediately obtained as 2 m / s.

[0084] B2: According to the falling speed, adjust the second reverse pull voltage parameter to obtain the third reverse pull voltage parameter.

[0085] By adjusting the second reverse pull voltage parameter, the third reverse pull voltage parameter adapted to the current working condition can be obtained. For example, when the falling speed is too large, the voltage value of the second reverse pull voltage can be increased, and when the falling speed is too small, the voltage value of the second reverse pull voltage can be reduced to prevent the second reverse pull voltage value from being too large to produce a pull-up effect, which in turn increases the impact on the valve seat.

[0086] The present application does not limit the waveform of the reverse pull voltage, and the waveform of the third reverse pull voltage may include a straight-down waveform, a step-down waveform, an oblique-down waveform, etc. Among them, the step-down waveform and the step-down waveform more stably delay the needle valve drop speed.

[0087] B3: applying a third reverse pull voltage indicated by a third reverse pull voltage parameter to apply a force corresponding to the third reverse pull voltage to the needle valve.

[0088] By obtaining the falling speed of the needle valve after the first reverse pull voltage is applied and adjusting the second reverse pull voltage parameters accordingly, it is possible to dynamically adapt to different working conditions and changes, thereby improving the flexibility of applying the reverse pull voltage.

[0089] The reverse pull voltage parameters may include a reverse pull voltage value, a waiting time, and a holding time. The present application provides a determination and application method for the reverse pull voltage value, see C1-C3:

[0090] C1: Obtain the first corresponding relationship between the pressure difference value and the back-pull voltage value, and the pressure difference value.

[0091] Among them, the pressure difference is used to characterize the difference between the fuel pressure and the intake pressure. The fuel pressure is the force on the needle valve in the same direction as the falling direction, and the intake pressure is the force on the needle valve in the opposite direction to the falling direction. The first corresponding relationship is a pre-established corresponding relationship, which describes different pressure differences corresponding to different back-pull voltage values.

[0092] The pressure difference value may be in various forms, including a difference value, a ratio value, etc. For example, the pressure difference value may be equal to fuel pressure minus intake pressure.

[0093] C2: Determine the reverse pull voltage value according to the pressure difference value and based on the first corresponding relationship. In the first corresponding relationship, the greater the pressure difference value, the greater the reverse pull voltage value.

[0094] Among them, the larger the reverse pull voltage value, the greater the force corresponding to the reverse pull voltage, and the greater the force, the better the deceleration effect.

[0095] C3: According to the back-pull voltage value, a back-pull voltage is applied according to the back-pull voltage value, and a force corresponding to the back-pull voltage is applied to the needle valve.

[0096] The greater the pressure difference, the greater the acceleration of the needle valve and the greater the potential falling speed of the needle valve. Based on the first corresponding relationship, the reverse pull voltage value can be increased to increase the force on the needle valve, improve the deceleration effect on the needle valve, and reduce the impact and wear on the valve seat.

[0097] By acquiring the pressure difference in real time and adjusting the back-pull voltage accordingly, the deceleration effect on the needle valve can be dynamically adjusted according to the environmental factors that affect the needle valve speed, thereby increasing the flexibility and adaptability of the needle valve deceleration.

[0098] The waiting time is the time interval from the end of the application of the conventional voltage to the start of the application of the reverse pull voltage, and the holding time is the duration of the continuous application of the reverse pull voltage. This application provides a determination and application method for the waiting time and the holding time, see D1-D5:

[0099] D1: Obtaining a second corresponding relationship between the pressure difference and the waiting time, a third corresponding relationship between the pressure difference and the holding time, and the pressure difference.

[0100] The second corresponding relationship is a pre-established corresponding relationship, which describes that different pressure difference values ​​correspond to different waiting time lengths, and the third corresponding relationship is a pre-established corresponding relationship, which describes that different pressure difference values ​​correspond to different maintaining time lengths.

[0101] D2: Determine the waiting time according to the pressure difference and based on the second corresponding relationship. In the second corresponding relationship, the greater the pressure difference, the shorter the waiting time.

[0102] The greater the pressure difference, the greater the acceleration of the needle valve, the greater the potential falling speed of the needle valve, and the shorter the time left for the reverse pull voltage to respond. If the waiting time is too long, the needle valve may fall into the valve seat before the reverse pull voltage is applied, thus failing to slow down the needle valve. In the second corresponding relationship, the greater the pressure difference, the shorter the waiting time, so that the reverse pull voltage can be applied in time.

[0103] D3: Determine the maintenance time according to the pressure difference and the third corresponding relationship. In the third corresponding relationship, the greater the pressure difference, the shorter the maintenance time.

[0104] The greater the pressure difference, the greater the acceleration of the needle valve, and the greater the potential falling speed of the needle valve. If the maintenance time is too short, the deceleration effect may not be good enough, and the speed of falling into the valve seat may have a greater impact. In the third corresponding relationship, the greater the pressure difference, the longer the maintenance time, so that the time for applying the reverse pull voltage can be extended to provide a better deceleration effect.

[0105] D4: According to the waiting time, after the reverse pull voltage indicated by the reverse pull voltage parameter is applied, wait for the waiting time.

[0106] D5: In response to the end of the waiting process, according to the holding time, by maintaining the holding time and according to the back-pull voltage value, a back-pull voltage is applied to apply a force corresponding to the back-pull voltage to the needle valve.

[0107] By adjusting the waiting time and the holding time according to the pressure difference, the second corresponding relationship and the third corresponding relationship, the effectiveness of applying the reverse pull voltage is ensured, the deceleration effect on the needle valve is improved, the impact on the valve seat is further reduced, and the wear of the valve seat is reduced.

[0108] The present application also provides an implementation method for updating the maintenance duration according to the waiting duration, see E1-E4:

[0109] E1: If the waiting time is greater than or equal to the first preset time, increase the maintenance time to obtain an updated maintenance time.

[0110] The first preset time duration is used to indicate that the waiting time duration is too long.

[0111] If the waiting time is greater than or equal to the first preset time, it means that the waiting time is too long and the falling speed of the needle valve is too fast. At this time, it is necessary to increase the maintenance time to obtain an updated maintenance time. By using the updated maintenance time, the time to maintain the reverse pull voltage can be increased, the deceleration time of the needle valve can be extended, and the deceleration effect of the needle valve can be improved.

[0112] E2: If the waiting time is less than or equal to the second preset time, reduce the initial maintenance time to obtain an updated maintenance time.

[0113] The second preset time length is used to indicate that the waiting time length is too short, and the second preset time length is smaller than the first preset time length.

[0114] If the waiting time is less than or equal to the first preset time, it means that the waiting time is too short, the needle valve has just started to fall, and the falling speed is low. At this time, it is necessary to reduce the holding time to obtain an updated holding time to prevent the needle valve from being pulled up without a deceleration effect.

[0115] E3: If the waiting time is greater than the second preset time and less than the first preset time, the maintenance time is determined as the updated maintenance time.

[0116] If the waiting time is greater than the second preset time and less than the first preset time, it means that the waiting time is moderate and does not need to be adjusted, and the maintenance time is determined as the updated maintenance time.

[0117] E4: In response to the end of the waiting process, according to the updated maintenance time, by maintaining the updated maintenance time, according to the reverse pull voltage value, a reverse pull voltage is applied, and a force corresponding to the reverse pull voltage is applied to the needle valve.

[0118] By updating the holding time according to the waiting time, it is ensured that the needle valve can fall into the valve seat at a more suitable speed under different waiting time conditions. This method of dynamically updating the holding time is more flexible and adaptable, and has a better deceleration effect.

[0119] See also Figure 5 , Figure 5 This is a device structure diagram of a methanol injector control device provided in the present application, the device comprising: an acquisition unit 501, a pull-up unit 502 and a reverse pull unit 503;

[0120] The acquisition unit is used to acquire the normal voltage parameters and the reverse pull voltage parameters;

[0121] The lifting unit is used to lift the needle valve of the methanol injector according to the conventional voltage parameter by applying a conventional voltage indicated by the conventional voltage parameter, wherein the needle valve is a component for controlling fuel injection;

[0122] The back-pull unit is used to apply a force corresponding to the back-pull voltage to the needle valve during the falling process of the needle valve, according to the back-pull voltage parameter, by applying a back-pull voltage indicated by the back-pull voltage parameter, and the direction of the force is opposite to the falling direction of the needle valve.

[0123] Therefore, the present application provides a methanol injector control device, which no longer allows the needle valve to fall freely to impact the valve seat after the voltage drive ends, but instead applies force during the falling process to reduce the impact and wear on the valve seat, which is explained in detail below.

[0124] The acquisition unit acquires the conventional voltage parameter and the reverse pull voltage parameter, which can ensure that the control process of the methanol injector is accurately executed according to the voltage parameter indication. According to the conventional voltage parameter, the pull-up unit pulls up the needle valve of the methanol injector by applying the conventional voltage indicated by the conventional voltage parameter, and injects methanol based on the needle valve pull-up, thereby ensuring the fuel supply demand of the methanol engine. In the process of the needle valve falling, according to the reverse pull voltage parameter, the reverse pull unit applies a force to the needle valve by applying the reverse pull voltage indicated by the reverse pull voltage parameter, so that the needle valve is subjected to a force opposite to the falling direction during the falling process, reducing the speed of the needle valve falling to the valve seat, reducing the impact degree on the valve seat, and reducing the valve seat wear problem caused by high-speed impact, thereby extending the service life of the methanol injector and improving the reliability of the methanol injector.

[0125] As a possible implementation manner, the pull-back voltage parameter includes a first pull-back voltage parameter and a second pull-back voltage parameter, and the pull-back unit is specifically used for:

[0126] According to the first back-pull voltage parameter, by applying a first back-pull voltage indicated by the first back-pull voltage parameter, a force corresponding to the first back-pull voltage is applied to the needle valve;

[0127] After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, a second reverse pull voltage indicated by the second reverse pull voltage parameter is applied to apply a force corresponding to the second reverse pull voltage to the needle valve.

[0128] As a possible implementation, the back-pull unit is specifically used for:

[0129] After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, acquiring the falling speed of the needle valve;

[0130] According to the falling speed, adjusting the second reverse pull voltage parameter to obtain a third reverse pull voltage parameter;

[0131] By applying the third reverse pull voltage indicated by the third reverse pull voltage parameter, a force corresponding to the third reverse pull voltage is applied to the needle valve.

[0132] As a possible implementation manner, the reverse pull voltage parameter includes a reverse pull voltage value, and the reverse pull voltage value is obtained by:

[0133] Acquire a first corresponding relationship between a pressure difference value and the reverse pull voltage value, and the pressure difference value, wherein the pressure difference value is used to characterize the difference between the fuel pressure and the intake pressure, wherein the fuel pressure is the force applied to the needle valve in the same direction as the falling direction, and the intake pressure is the force applied to the needle valve in the opposite direction as the falling direction;

[0134] Determine the reverse pull voltage value according to the pressure difference value and based on the first corresponding relationship, wherein the greater the pressure difference value is, the greater the reverse pull voltage value is;

[0135] The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises:

[0136] According to the back-pull voltage value, the back-pull voltage is applied according to the back-pull voltage value, so that a force corresponding to the back-pull voltage is applied to the needle valve.

[0137] As a possible implementation, the pull-back voltage parameter includes the pull-back voltage value, the waiting time and the maintaining time, and the waiting time and the maintaining time are obtained by:

[0138] Acquire a second corresponding relationship between the pressure difference and the waiting time, a third corresponding relationship between the pressure difference and the maintaining time, and the pressure difference;

[0139] Determine the waiting time according to the pressure difference and based on the second corresponding relationship, wherein the greater the pressure difference, the shorter the waiting time;

[0140] Determine the maintenance time according to the pressure difference and based on the third corresponding relationship, wherein the greater the pressure difference is, the shorter the maintenance time is;

[0141] The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises:

[0142] According to the waiting time, after the reverse pull voltage indicated by the reverse pull voltage parameter is applied, wait for the waiting time;

[0143] In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, the reverse pull voltage is applied, and a force corresponding to the reverse pull voltage is applied to the needle valve.

[0144] As a possible implementation manner, the device further includes an updating unit, and the updating unit is configured to:

[0145] If the waiting time is greater than or equal to a first preset time, increase the maintenance time to obtain an updated maintenance time, wherein the first preset time is used to indicate that the waiting time is too long;

[0146] If the waiting time is less than or equal to a second preset time, reduce the initial maintenance time to obtain the updated maintenance time, the second preset time is used to indicate that the waiting time is too short, and the second preset time is less than the first preset time;

[0147] If the waiting time is greater than the second preset time and less than the first preset time, the maintaining time is determined as the updated maintaining time;

[0148] In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, applying the reverse pull voltage, and applying a force corresponding to the reverse pull voltage to the needle valve, including:

[0149] In response to the end of the waiting process, according to the updated maintenance time, by maintaining the updated maintenance time, the back-pull voltage is applied according to the back-pull voltage value, and a force corresponding to the back-pull voltage is applied to the needle valve.

[0150] See also Figure 6 The present application further provides a computer device, the computer device comprising a memory 601 and a processor 602:

[0151] The memory is used to store a computer program and transmit the computer program to the processor;

[0152] The processor is configured to execute the method of the above method embodiment according to the computer program.

[0153] The present application also provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method of the above method embodiment.

[0154] The present application also provides a computer program product including a computer program, which, when executed on a computer device, enables the computer device to execute the method in the above method embodiment.

[0155] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0156] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0157] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0158] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0159] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A methanol injector control method, characterized in that: The method comprises: Get normal voltage parameters and reverse pull voltage parameters; According to the conventional voltage parameter, by applying a conventional voltage indicated by the conventional voltage parameter, a needle valve of a methanol injector is pulled up, the needle valve being a component for controlling fuel injection; During the falling process of the needle valve, according to the back-pull voltage parameter, by applying the back-pull voltage indicated by the back-pull voltage parameter, a force corresponding to the back-pull voltage is applied to the needle valve, and the direction of the force is opposite to the falling direction of the needle valve.

2. The method according to claim 1, characterized in that The back-pull voltage parameter includes a first back-pull voltage parameter and a second back-pull voltage parameter, and applying a back-pull voltage indicated by the back-pull voltage parameter to apply a force corresponding to the back-pull voltage to the needle valve according to the back-pull voltage parameter, including: According to the first back-pull voltage parameter, by applying a first back-pull voltage indicated by the first back-pull voltage parameter, a force corresponding to the first back-pull voltage is applied to the needle valve; After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, a second reverse pull voltage indicated by the second reverse pull voltage parameter is applied to apply a force corresponding to the second reverse pull voltage to the needle valve.

3. The method according to claim 2, characterized in that The method of applying a second back-pull voltage indicated by the second back-pull voltage parameter to the needle valve after the first back-pull voltage indicated by the first back-pull voltage parameter is applied to apply a force corresponding to the second back-pull voltage to the needle valve comprises: After the first reverse pull voltage indicated by the first reverse pull voltage parameter is applied, acquiring the falling speed of the needle valve; According to the falling speed, adjusting the second reverse pull voltage parameter to obtain a third reverse pull voltage parameter; By applying the third reverse pull voltage indicated by the third reverse pull voltage parameter, a force corresponding to the third reverse pull voltage is applied to the needle valve.

4. The method according to claim 1, characterized in that The reverse pull voltage parameter includes a reverse pull voltage value, and the reverse pull voltage value is obtained by: Acquire a first corresponding relationship between a pressure difference value and the reverse pull voltage value, and the pressure difference value, wherein the pressure difference value is used to characterize the difference between the fuel pressure and the intake pressure, wherein the fuel pressure is the force applied to the needle valve in the same direction as the falling direction, and the intake pressure is the force applied to the needle valve in the opposite direction as the falling direction; Determine the reverse pull voltage value according to the pressure difference value and based on the first corresponding relationship, wherein the greater the pressure difference value is, the greater the reverse pull voltage value is; The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises: According to the back-pull voltage value, the back-pull voltage is applied according to the back-pull voltage value, so that a force corresponding to the back-pull voltage is applied to the needle valve.

5. The method according to claim 1, characterized in that The reverse pull voltage parameters include the reverse pull voltage value, waiting time and maintaining time. The waiting time is the time interval from the end of the application of the conventional voltage to the start of the application of the reverse pull voltage. The maintaining time is the duration of continuous application of the reverse pull voltage. The waiting time and the maintaining time are obtained by the following method: Acquire a second corresponding relationship between the pressure difference and the waiting time, a third corresponding relationship between the pressure difference and the maintaining time, and the pressure difference; Determine the waiting time according to the pressure difference and based on the second corresponding relationship, wherein the greater the pressure difference, the shorter the waiting time; Determine the maintenance time according to the pressure difference and based on the third corresponding relationship, wherein the greater the pressure difference is, the shorter the maintenance time is; The step of applying a force corresponding to the back-pull voltage to the needle valve by applying a back-pull voltage indicated by the back-pull voltage parameter according to the back-pull voltage parameter comprises: According to the waiting time, after the reverse pull voltage indicated by the reverse pull voltage parameter is applied, wait for the waiting time; In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, the reverse pull voltage is applied, and a force corresponding to the reverse pull voltage is applied to the needle valve.

6. The method according to claim 5, characterized in that The method further comprises: If the waiting time is greater than or equal to a first preset time, increase the maintenance time to obtain an updated maintenance time, wherein the first preset time is used to indicate that the waiting time is too long; If the waiting time is less than or equal to a second preset time, reduce the initial maintenance time to obtain the updated maintenance time, the second preset time is used to indicate that the waiting time is too short, and the second preset time is less than the first preset time; If the waiting time is greater than the second preset time and less than the first preset time, the maintaining time is determined as the updated maintaining time; In response to the end of the waiting process, according to the maintenance time, by maintaining the maintenance time, according to the reverse pull voltage value, applying the reverse pull voltage, and applying a force corresponding to the reverse pull voltage to the needle valve, including: In response to the end of the waiting process, according to the updated maintenance time, by maintaining the updated maintenance time, the back-pull voltage is applied according to the back-pull voltage value, and a force corresponding to the back-pull voltage is applied to the needle valve.

7. A methanol injector control device, characterized in that: The device comprises: an acquisition unit, a pulling unit and a reverse pulling unit; The acquisition unit is used to acquire the normal voltage parameters and the reverse pull voltage parameters; The lifting unit is used to lift the needle valve of the methanol injector according to the conventional voltage parameter by applying a conventional voltage indicated by the conventional voltage parameter, wherein the needle valve is a component for controlling fuel injection; The back-pull unit is used to apply a force corresponding to the back-pull voltage to the needle valve during the falling process of the needle valve, according to the back-pull voltage parameter, by applying a back-pull voltage indicated by the back-pull voltage parameter, and the direction of the force is opposite to the falling direction of the needle valve.

8. A computer device, characterized in that: The computer device comprises a processor and a memory: The memory is used to store a computer program and transmit the computer program to the processor; The processor is configured to execute the method according to any one of claims 1 to 6 according to the computer program.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that When the method is executed on a computer device, the computer device is enabled to execute the method according to any one of claims 1 to 6.

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