Engine control method, device, equipment and vehicle

Abstract

The present application discloses an engine control method, device, equipment and vehicle. The method is applied to an engine equipped with a water-cooled intercooler; the method includes: when it is determined that the water pump of the water-cooled intercooler fails, determining the operating status of the engine intake temperature collection device; based on the operating status, determining the torque limiting scheme of the engine; the torque limiting scheme is used to adjust the torque of the engine; according to the torque limiting scheme, controlling the engine operation. It can be seen that when the water pump fails, the engine intake temperature can be judged in combination with the operating status of the engine intake temperature collection device, so as to avoid reducing the engine power output when the water pump fails but the intake temperature is not high, thereby avoiding over-protection of the engine. Then, according to the operating status, the engine torque limit is controlled, so that the engine power output can be adjusted intelligently to avoid affecting the engine operation and improve the engine performance.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to an engine control method, device, equipment and vehicle. Background Art

[0002] With the rapid development of the vehicle industry, cars have become one of the indispensable means of transportation. At present, engine intercoolers can be divided into two categories: air-cooled intercoolers and water-cooled intercoolers. In water-cooled intercoolers, the water pump, as the power source for water circulation, is an important component for cooling. If the water pump fails, it may cause the engine intake temperature to rise rapidly, causing the engine performance to decline and affecting the normal operation of the engine.

[0003] Based on the above situation, in the related technology, the power output of the engine can be reduced by the fault indicator of the water pump to protect the engine performance as much as possible. Specifically, after the fault indicator of the water pump is identified, the engine torque can be adjusted to weaken the engine power. However, in actual applications, the fault indicator of the water pump may be falsely reported. If the fault indicator is falsely reported and the actual intake temperature is not high, reducing the power output of the engine will affect the operation of the engine, thereby causing the vehicle to be unable to be used normally. Summary of the invention

[0004] The embodiments of the present application provide an engine control method, device, equipment and vehicle, which are intended to avoid over-protection of the engine and affect the engine operation, and to improve the performance of the engine.

[0005] In a first aspect, an embodiment of the present application provides an engine control method, which is applied to an engine equipped with a water-cooled intercooler; the method comprises:

[0006] When it is determined that the water pump of the water-cooled intercooler is faulty, determining the operation status of the engine intake air temperature collection device;

[0007] Based on the operating conditions, determining a torque limiting scheme of the engine; the torque limiting scheme is used to adjust the torque of the engine;

[0008] The engine is controlled to operate according to the torque limiting scheme.

[0009] Optionally, determining the torque limiting scheme of the engine based on the operating condition includes:

[0010] When the operating condition indicates that the engine intake air temperature acquisition device is faulty, a first correlation between the engine speed and the engine torque is used as the torque limiting scheme; the first correlation is used to limit the torque of the engine to a first torque range.

[0011] Optionally, the torque limiting scheme is the first association relationship; and controlling the engine to run according to the torque limiting scheme includes:

[0012] According to the current speed of the engine, determining from the first association relationship a current torque corresponding to the current speed as a first torque;

[0013] The engine is controlled to operate at the first torque.

[0014] Optionally, determining the torque limiting scheme of the engine based on the operating condition includes:

[0015] When the operating condition indicates that the engine intake temperature collection device operates normally, and the current intake temperature of the engine collected is greater than or equal to a first preset temperature, a second correlation relationship among the engine speed, the engine intake temperature and the engine torque is used as the torque limiting scheme; the second correlation relationship is used to limit the torque of the engine to a second torque range, and the torque in the second torque range is greater than the torque in the first torque range.

[0016] Optionally, the torque limiting scheme is the second association relationship; and controlling the engine to run according to the torque limiting scheme includes:

[0017] According to the current speed of the engine and the current intake air temperature, determining from the second association relationship a current torque that corresponds to the current speed and the current intake air temperature as a second torque;

[0018] The engine is controlled to operate at the second torque.

[0019] Optionally, determining that a water pump of the water-cooled intercooler is faulty includes:

[0020] In response to a fault signal sent by the water pump, determining that the water pump is faulty; and / or,

[0021] A water pump control circuit is diagnosed, and when a water pump control circuit fault is diagnosed, the water pump fault is determined.

[0022] Optionally, the torque limiting scheme is the first association relationship; after controlling the engine to run according to the torque limiting scheme, the method further includes:

[0023] When the operating condition indicates that the engine intake air temperature collection device changes from failure to normal operation, continuing to collect the current intake air temperature through the engine intake air temperature collection device;

[0024] If the current intake air temperature is greater than or equal to the first preset temperature, the second association relationship is used as a new torque limiting scheme, and the engine operation is continuously controlled according to the new torque limiting scheme.

[0025] Optionally, the method further comprises:

[0026] When the operating condition indicates that the engine intake air temperature collection device operates normally and the current intake air temperature collected is less than a second preset temperature, the engine torque is stopped from being limited; and the second preset temperature is less than the first preset temperature.

[0027] In a second aspect, an embodiment of the present application provides an engine control device, which is applied to an engine equipped with a water-cooled intercooler; the device comprises:

[0028] An operation status determination module, used to determine the operation status of the engine intake air temperature collection device when a water pump failure of the water-cooled intercooler is determined;

[0029] A torque limiting scheme determining module, used to determine a torque limiting scheme of the engine based on the operating conditions; the torque limiting scheme is used to adjust the torque of the engine;

[0030] An engine control module is configured to control operation of the engine according to the torque limiting scheme.

[0031] In a third aspect, an embodiment of the present application provides an engine control device, the device comprising: a processor, a memory, and a system bus;

[0032] The processor and the memory are connected via the system bus;

[0033] The memory is used to store one or more programs, wherein the one or more programs include instructions, and when the instructions are executed by the processor, the processor executes any one of the embodiments of the above-mentioned engine control method.

[0034] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising: an engine control module, and an engine equipped with a water-cooled intercooler;

[0035] When the engine control module is running, any implementation of the above engine control method is executed.

[0036] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0037] In the embodiment of the present application, when it is determined that the water pump of the water-cooled intercooler fails, the operating condition of the engine intake temperature acquisition device can be determined first, and then the engine torque limit scheme can be determined based on the operating condition, and then the engine operation can be controlled according to the torque limit scheme, so as to adjust the engine torque. It can be seen that when the water pump fails, the engine intake temperature can be judged in combination with the operating condition of the engine intake temperature acquisition device, so as to avoid reducing the engine power output when the water pump fails but the intake temperature is not high, thereby avoiding over-protection of the engine. Then, according to the operating condition, the engine torque limit can be controlled, so as to intelligently adjust the engine power output, avoid affecting the engine operation, and improve the engine performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A flow chart of an engine control method provided in an embodiment of the present application;

[0039] Figure 2 A flow chart of an engine torque limiting process provided by an embodiment of the present application;

[0040] Figure 3 A flowchart of another engine torque limiting process provided by an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of an engine control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] As mentioned above, in a water-cooled intercooler, the water pump, as a power source for water circulation, is an important component for achieving cooling. If the water pump fails, it may cause the engine intake temperature to rise rapidly, causing the engine performance to decay and affecting the normal operation of the engine. In the related art, the power output of the engine can be reduced by the fault indicator of the water pump to protect the engine performance as much as possible. Specifically, after the fault indicator of the water pump is identified, the engine torque can be adjusted to weaken the engine power. However, in actual applications, the fault indicator of the water pump may be falsely reported. If the fault indicator is falsely reported and the actual intake temperature is not high, reducing the power output of the engine will affect the engine operation, resulting in the vehicle being unable to be used normally.

[0043] In order to solve the above problems, an embodiment of the present application provides an engine control method, which may include: when it is determined that a water pump of a water-cooled intercooler fails, the operating status of the engine intake air temperature collection device can be first determined, and then based on the operating status, the engine torque limitation scheme is determined, and then the engine operation is controlled according to the torque limitation scheme, thereby adjusting the engine torque.

[0044] It can be seen that when the water pump fails, the engine intake temperature can be judged by further combining the operation of the engine intake temperature collection device, so as to avoid reducing the engine power output when the water pump fails but the intake temperature is not high, thereby avoiding over-protection of the engine. Then, according to the operation status, the engine limit torque is controlled, and the engine power output can be adjusted intelligently to avoid affecting the engine operation and improve the engine performance.

[0045] It should be noted that the embodiment of the present application does not specifically limit the execution subject of the engine control method. In practical applications, the ECM (Engine Control Module) can be used as the execution subject.

[0046] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Figure 1 A flow chart of an engine control method provided in an embodiment of the present application. Figure 1 As shown, the engine control method is applied to an engine equipped with a water-cooled intercooler. The method may specifically include:

[0048] S101: When it is determined that a water pump of a water-cooled intercooler is faulty, an operation status of an engine intake air temperature collection device is determined.

[0049] In the embodiment of the present application, the failure of the water pump can be specifically manifested in various situations such as the water pump running dry, the water pump blocking, the water pump overheating or the water pump control circuit failure. For these situations, it can be determined by the fault identification sent by the water pump and / or the diagnosis of the water pump control circuit failure. Correspondingly, the process of determining the water pump failure can specifically include: responding to the fault signal sent by the water pump, and / or, diagnosing the water pump control circuit, and determining the water pump failure when the water pump control circuit is diagnosed to have a fault.

[0050] The engine intake air temperature collection device may be a temperature sensor, which may be specifically arranged at the engine intake manifold to collect the engine intake air temperature. In the embodiment of the present application, the operation status of the engine intake air temperature collection device may be divided into two types: one is indicating that the engine intake air temperature collection device is faulty, that is, the accurate intake air temperature cannot be collected; the other is indicating that the engine intake air temperature collection device is operating normally and the accurate intake air temperature is collected. Correspondingly, the embodiment of the present application may not specifically limit the determination process of whether the operation status indicates that the engine intake air temperature collection device is faulty. For ease of understanding, a variety of possible implementation methods may be provided below for illustration.

[0051] As an example, a plurality of engine intake air temperature collection devices may be provided at the engine intake manifold. When there are significant differences between the data collected by the plurality of engine intake air temperature collection devices, for example, the data difference obviously exceeds the acceptable error range, it can be determined that the engine intake air temperature collection device is faulty.

[0052] As another example, various electrical tests such as power-on test, current test and voltage test may be performed on the control circuit of the engine intake air temperature collection device. When the electrical test results do not meet the preset results, it may be determined that the engine intake air temperature collection device is faulty.

[0053] S102: Determine a torque limiting scheme for the engine based on the operating conditions.

[0054] In the embodiment of the present application, the torque limiting scheme can be used to adjust the torque of the engine. Specifically, the torque limiting scheme of the engine can be divided into two types: one is a scheme to protect the engine by strictly limiting the torque of the engine when the operating conditions indicate that the engine intake temperature collection device is faulty; the other is a scheme to protect the engine by generally limiting the torque of the engine when the operating conditions indicate that the engine intake temperature is operating normally. Here, the process of determining the torque limiting scheme of the engine, that is, S102, may not be specifically limited in the embodiment of the present application. For ease of understanding, the following may be explained in conjunction with a possible implementation. For technical details, please refer to the introduction below.

[0055] S103: Controlling the engine operation according to the torque limiting scheme.

[0056] In the embodiment of the present application, the engine operation is controlled by the torque limiting scheme, which can be specifically reflected in adjusting the current torque of the engine to the torque provided by the torque limiting scheme, thereby adjusting the power output of the engine to achieve protection of the engine. For the process of controlling the engine operation, that is, the technical details of S103, please refer to the introduction made below.

[0057] In addition, in the embodiment of the present application, when the water pump of the water-cooled intercooler changes from a faulty state to normal operation, the engine torque can be stopped from being restricted, thereby avoiding affecting the engine operation and improving the engine performance.

[0058] Based on the relevant contents of S101-S103 above, it can be known that in the embodiment of the present application, when it is determined that the water pump of the water-cooled intercooler fails, the operating condition of the engine intake temperature acquisition device can be determined first, and then the engine torque limit scheme can be determined based on the operating condition, and then the engine operation can be controlled according to the torque limit scheme, so as to adjust the engine torque. It can be seen that when the water pump fails, the engine intake temperature can be judged by further combining the operating condition of the engine intake temperature acquisition device, so as to avoid reducing the engine power output when the water pump fails but the intake temperature is not high, thereby avoiding over-protection of the engine. Then, according to the operating condition, the engine torque limit can be controlled, so as to intelligently adjust the engine power output, avoid affecting the engine operation, and improve the engine performance.

[0059] As mentioned above, in the embodiment of the present application, the torque limiting scheme can be determined and the engine operation can be controlled in combination with the operation of the engine intake temperature collection device. Based on this, the engine torque limiting process in actual application can be introduced for two different operation conditions, namely, indicating that the engine intake temperature collection device is faulty, and indicating that the engine intake temperature collection device is operating normally and the current intake temperature of the engine is collected.

[0060] In one case, the operation of the engine intake air temperature collection device may indicate a failure of the engine intake air temperature collection device. Correspondingly, the engine torque limiting process may specifically include S21-S23. The engine torque limiting process in this case is described below in conjunction with the embodiments and the accompanying drawings.

[0061] Figure 2 A flowchart of an engine torque limiting process provided by an embodiment of the present application. Figure 2 As shown, the engine torque limiting process may specifically include:

[0062] S21: When the operating condition indicates that the engine intake air temperature acquisition device is faulty, a first correlation relationship between the engine speed and the engine torque is used as a torque limiting scheme.

[0063] The first association relationship is specifically used to limit the engine torque to the first torque range. For example, if the engine torque can actually be adjusted within the range of 0 to 500 N·m, then the first torque range can be 50 N·m to 200 N·m. It can be seen that the first torque range can be specifically composed of a smaller range selected from the actual adjustable range of the engine torque.

[0064] As mentioned above, when the engine intake temperature collection device fails, the accurate intake temperature cannot be collected. Therefore, the engine can be protected by strictly limiting the engine torque. Accordingly, the scheme for strictly limiting the engine torque can be embodied as: using the first correlation between the engine speed and the engine torque as the torque limitation scheme. Since the accurate intake temperature cannot be collected, in order to avoid the actual intake temperature being not high and mistakenly reducing the engine power output, causing over-protection of the engine and affecting the engine operation, only the engine speed is combined to limit the engine torque to adjust within a smaller range, so as to achieve strict restrictions on the engine torque and maximize the engine performance.

[0065] Further, in the first association relationship, the higher the engine speed, the more the engine torque is limited, that is, the smaller the value of the engine torque in the first torque range; the lower the engine speed, the less the engine torque is limited, that is, the larger the value of the engine torque in the first torque range. In addition, it should be noted that the process of establishing the first association relationship is not limited here, for example, it is pre-set before the vehicle leaves the factory or pre-calibrated by the actual operation of the vehicle.

[0066] In addition, the embodiment of the present application may not specifically limit the representation form of the first association relationship. For example, in practical applications, the first association relationship may be represented in the form shown in Table 1 below.

[0067] Table 1

[0068]

[0069] In Table 1, the engine torque values ​​corresponding to different engine speeds are expressed in TBD (to be determined) format, which can actually be preset before the vehicle leaves the factory or pre-calibrated by actual vehicle operation.

[0070] S22: According to the current rotation speed of the engine, determine from the first association relationship a current torque corresponding to the current rotation speed as the first torque.

[0071] S23: Control the engine to operate at the first torque.

[0072] In addition, in the embodiment of the present application, when the operating condition indicates that the engine intake air temperature collection device changes from a fault to a normal operation, the current intake air temperature can continue to be collected through the engine intake air temperature collection device; if the current intake air temperature is greater than or equal to the first preset temperature, the second association relationship is used as a new torque limiting scheme, and the engine operation is continued to be controlled according to the new torque limiting scheme. It can be seen that when the fault of the engine intake air temperature collection device is eliminated, the engine torque limitation based on the second association relationship can be cancelled, and when the above conditions meet the first association relationship, the engine torque limitation is continued through the first association relationship, thereby achieving complete logical control of the transmitter torque, intelligently adjusting the engine power output, avoiding affecting the engine operation, and improving the engine performance.

[0073] Based on the above S21-S23 related contents, it can be known that in the embodiment of the present application, when the engine intake air temperature collection device fails, the engine torque is limited to the first torque range through the first correlation relationship between the engine speed and the engine torque, that is, the engine torque is limited to be adjusted within a smaller range, thereby achieving strict limitation on the engine torque and improving the engine performance as much as possible.

[0074] In another case, the operation status of the engine intake air temperature collection device may indicate that the engine intake air temperature collection device operates normally and collects a relatively accurate current intake air temperature of the engine. Correspondingly, the engine torque limiting process may specifically include S31-S33. The engine torque limiting process in this case is described below in combination with the embodiments and the accompanying drawings.

[0075] Figure 3 A flowchart of another engine torque limiting process provided by an embodiment of the present application. Figure 3 As shown, the engine torque limiting process may specifically include:

[0076] S31: When the operating status indicates that the engine intake temperature collection device operates normally and the collected current intake temperature of the engine is greater than or equal to the first preset temperature, a second correlation relationship among the engine speed, the engine intake temperature and the engine torque is used as a torque limiting scheme.

[0077] The second association relationship is specifically used to limit the torque of the engine to a second torque range, and the torque in the second torque range is greater than the torque in the first torque range. For example, if the engine torque can actually be adjusted within the range of 0 to 500 N·m, then the second torque range can be 250 N·m to 450 N·m. It can be seen that the second torque range can be specifically selected from a larger range within the actual adjustable range of the engine torque.

[0078] As mentioned above, when the engine intake temperature collection device operates normally, the accurate intake temperature can be collected. Therefore, the engine can be protected by generally limiting the engine torque. Accordingly, the scheme for generally limiting the engine torque can be embodied as follows: the second correlation between the engine speed, the engine intake temperature and the engine torque is used as the torque limitation scheme. Since the accurate intake temperature can be collected, when the current intake temperature is greater than or equal to the first preset temperature, the engine speed and the intake temperature are combined to limit the engine torque to a larger range, thereby achieving general limitation of the engine torque and improving the engine performance as much as possible. In addition, in actual applications, the value of the first preset temperature is, for example, 60°C.

[0079] Furthermore, in the second association relationship, the higher the engine speed, the more the engine torque is limited, that is, the smaller the value of the engine torque in the second torque range; the lower the engine speed, the less the engine torque is limited, that is, the larger the value of the engine torque in the second torque range. Similarly, the higher the engine intake temperature, the more the engine torque is limited, that is, the smaller the value of the engine torque in the second torque range; the lower the engine intake temperature, the less the engine torque is limited, that is, the larger the value of the engine torque in the second torque range. In addition, it should be noted that the process of establishing the second association relationship is not limited here, for example, it is pre-set before the vehicle leaves the factory or pre-calibrated by the actual operation of the vehicle.

[0080] In addition, the embodiment of the present application may not specifically limit the representation form of the second association relationship. For example, in practical applications, the second association relationship may be represented in the form shown in Table 2 below.

[0081] Table 2

[0082]

[0083] In Table 2, the engine torque values ​​corresponding to different engine speeds and different engine intake temperatures are expressed in TBD (to be determined), which can actually be pre-set before the vehicle leaves the factory or pre-calibrated by actual vehicle operation.

[0084] S32: According to the current engine speed and the current intake air temperature, determine from the second association relationship a current torque that corresponds to the current engine speed and the current intake air temperature as the second torque.

[0085] S33: Control the engine to operate at the second torque.

[0086] In addition, in the case where the current intake air temperature is less than the second preset temperature, that is, when the operating condition indicates that the engine intake air temperature collection device is operating normally and the current intake air temperature is less than the second preset temperature, the engine torque can be stopped from being limited. The second preset temperature is less than the first preset temperature. It can be seen that when the current intake air temperature gradually decreases as the engine torque is limited, if the current intake air temperature decreases to less than the second preset temperature, there is no need to limit the engine torque, thereby achieving complete logical control of the transmitter torque, intelligently adjusting the engine power output, avoiding affecting the engine operation, improving the engine performance, and helping to quickly restore the normal operation of the vehicle.

[0087] Based on the relevant contents of S31-S33 above, it can be known that in the embodiment of the present application, when the engine intake air temperature acquisition device operates normally, the engine torque is limited to the second torque range through the second correlation relationship among the engine speed, the engine intake air temperature and the engine torque, that is, the engine torque is limited to be adjusted within a larger range, thereby achieving ordinary limitation on the engine torque, and achieving complete logical control of the transmitter torque, which helps to quickly restore the normal operation of the vehicle.

[0088] In addition, in practical applications, the ambient temperature will affect the engine intake temperature. For example, in hot summer, the engine intake temperature will rise, while in cold winter, the engine temperature will show a downward trend. In other words, the ambient temperature will affect the engine performance by affecting the engine intake temperature. Therefore, the embodiment of the present application can further control the operation of the engine in combination with the ambient temperature. Specifically, a third correlation relationship between the engine speed, the engine intake temperature, the ambient temperature, and the engine torque can be provided in advance as a torque limiting scheme, and then according to the current engine speed, the current intake temperature, and the current ambient temperature, the current torque corresponding to the three is determined from the third correlation relationship as the third torque, and then the engine is controlled to run with the third torque. In this way, the torque limiting scheme that further takes into account the ambient temperature can more accurately adjust the engine torque, thereby intelligently adjusting the engine power output and avoiding over-protection of the engine and affecting the engine operation.

[0089] Based on the engine control method provided in the above embodiment, the embodiment of the present application further provides an engine control device. The engine control device is described below in conjunction with the embodiments and drawings.

[0090] Figure 4 A schematic diagram of the structure of an engine control device provided in an embodiment of the present application. Figure 4 As shown, the engine control device 400 provided in the embodiment of the present application may include:

[0091] The operation status determination module 401 is used to determine the operation status of the engine intake air temperature acquisition device when a water pump failure of the water-cooled intercooler is determined;

[0092] The torque limiting scheme determining module 402 is used to determine the torque limiting scheme of the engine based on the operating conditions; the torque limiting scheme is used to adjust the torque of the engine;

[0093] The engine control module 403 is used to control the operation of the engine according to the torque limiting scheme.

[0094] In a possible implementation, the torque limiting scheme determination module 402 may specifically include:

[0095] A first determination module is used to use a first correlation between the engine speed and the engine torque as a torque limiting scheme when the operating condition indicates that the engine intake air temperature acquisition device fails; the first correlation is used to limit the engine torque to a first torque range;

[0096] In a possible implementation, the torque limiting scheme is a first association relationship. Accordingly, the engine control module 403 may specifically include:

[0097] A first torque determination module, configured to determine, according to a current speed of the engine, a current torque corresponding to the current speed from a first association relationship as a first torque;

[0098] The first torque operation module is configured to control the engine to operate at a first torque.

[0099] In a possible implementation, the torque limiting scheme determination module 402 may specifically include:

[0100] The second determination module is used to use the second correlation relationship among the engine speed, the engine intake temperature and the engine torque as a torque limiting scheme when the operating conditions indicate that the engine intake temperature collection device is operating normally and the current intake temperature of the engine collected is greater than or equal to the first preset temperature; the second correlation relationship is used to limit the torque of the engine to a second torque range, and the torque in the second torque range is greater than the torque in the first torque range.

[0101] In a possible implementation, the torque limiting scheme is a second association relationship. Accordingly, the engine control module 403 may specifically include:

[0102] A second torque determination module, configured to determine, according to a current speed of the engine and a current intake air temperature, a current torque corresponding to the current speed and the current intake air temperature from a second association relationship as a second torque;

[0103] The second torque operation module is configured to control the engine to operate at a second torque.

[0104] In a possible implementation, the operation status determination module 401 may specifically include:

[0105] A first fault determination module is configured to determine a water pump fault in response to a fault signal sent by the water pump; and / or,

[0106] The second fault determination module is used to diagnose the water pump control circuit and determine the water pump fault when the water pump control circuit fault is diagnosed.

[0107] In a possible implementation, the torque limiting scheme is a first association relationship. Accordingly, the engine control device 400 may further include:

[0108] An intake air temperature collection module, used to continue to collect the current intake air temperature through the engine intake air temperature collection device when the operating condition indicates that the engine intake air temperature collection device changes from failure to normal operation;

[0109] The continuing control module is used to use the second association relationship as a new torque limiting scheme if the current intake air temperature is greater than or equal to the first preset temperature, and continue to control the engine operation according to the new torque limiting scheme.

[0110] In a possible implementation manner, the engine control device 400 may further include:

[0111] The stop limiting module is used to stop limiting the engine torque when the operating conditions indicate that the engine intake temperature collection device is operating normally and the current intake temperature collected is less than a second preset temperature; the second preset temperature is less than the first preset temperature.

[0112] Furthermore, an embodiment of the present application also provides an engine control device, including: a processor, a memory, and a system bus;

[0113] The processor and memory are connected via a system bus;

[0114] The memory is used to store one or more programs, and the one or more programs include instructions. When the instructions are executed by the processor, the processor executes any one of the implementations of the above-mentioned engine control method.

[0115] Furthermore, an embodiment of the present application also provides a vehicle, which may include an engine control module and an engine equipped with a water-cooled intercooler. The engine control module executes any one of the above engine control methods when in operation.

[0116] 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 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.

[0117] 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.

[0118] 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. An engine control method, characterized in that: Applicable to an engine equipped with a water-cooled intercooler; the method comprises: When it is determined that the water pump of the water-cooled intercooler is faulty, determining the operation status of the engine intake air temperature collection device; Based on the operating conditions, determining a torque limiting scheme of the engine; the torque limiting scheme is used to adjust the torque of the engine; controlling the engine to operate according to the torque limiting scheme; Wherein, determining the torque limiting scheme of the engine based on the operating condition includes: When the operating condition indicates that the engine intake air temperature acquisition device is faulty, a first correlation between the engine speed and the engine torque is used as the torque limiting scheme; the first correlation is used to limit the torque of the engine to a first torque range.

2. The method according to claim 1, characterized in that The torque limiting scheme is the first association relationship; and controlling the engine to operate according to the torque limiting scheme includes: According to the current speed of the engine, determining from the first association relationship a current torque corresponding to the current speed as a first torque; The engine is controlled to operate at the first torque.

3. The method according to claim 1, characterized in that The method further comprises: When the operating condition indicates that the engine intake temperature collection device operates normally, and the current intake temperature of the engine collected is greater than or equal to a first preset temperature, a second correlation relationship among the engine speed, the engine intake temperature and the engine torque is used as the torque limiting scheme; the second correlation relationship is used to limit the torque of the engine to a second torque range, and the torque in the second torque range is greater than the torque in the first torque range.

4. The method according to claim 3, characterized in that The torque limiting scheme is the second association relationship; according to the torque limiting scheme, controlling the engine to run includes: According to the current speed of the engine and the current intake air temperature, determining from the second association relationship a current torque that corresponds to the current speed and the current intake air temperature as a second torque; The engine is controlled to operate at the second torque.

5. The method according to any one of claims 1 to 4, characterized in that: The determining that the water pump of the water-cooled intercooler is faulty includes: In response to a fault signal sent by the water pump, and / or diagnosing a water pump control circuit, and when a water pump control circuit fault is diagnosed, determining that the water pump is faulty.

6. The method according to claim 3 or 4, characterized in that: The torque limiting scheme is the first association relationship; after controlling the engine to run according to the torque limiting scheme, the method further includes: When the operating condition indicates that the engine intake air temperature collection device changes from failure to normal operation, continuing to collect the current intake air temperature through the engine intake air temperature collection device; If the current intake air temperature is greater than or equal to the first preset temperature, the second association relationship is used as a new torque limiting scheme, and the engine operation is continuously controlled according to the new torque limiting scheme.

7. The method according to claim 3 or 4, characterized in that: The method further comprises: When the operating condition indicates that the engine intake air temperature collection device operates normally and the current intake air temperature collected is less than a second preset temperature, the engine torque is stopped from being limited; and the second preset temperature is less than the first preset temperature.

8. An engine control device, characterized in that: Applicable to an engine equipped with a water-cooled intercooler; the device comprises: An operation status determination module, used to determine the operation status of the engine intake air temperature collection device when a water pump failure of the water-cooled intercooler is determined; A torque limiting scheme determining module, used for determining a torque limiting scheme of the engine based on the operating conditions; the torque limiting scheme is used for adjusting the torque of the engine; an engine control module, configured to control the operation of the engine according to the torque limiting scheme; Wherein, the torque limiting scheme determination module specifically includes: The first determination module is used to use the first correlation between the engine speed and the engine torque as a torque limiting scheme when the operating condition indicates that the engine intake air temperature collection device fails; the first correlation is used to limit the engine torque to a first torque range.

9. A vehicle, characterized in that: include: Engine control module, and engine equipped with water-cooled intercooler; When the engine control module is running, it executes the engine control method according to any one of claims 1 to 7.

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