Single-crank starting method, single-crank starting device, vehicle, and storage medium

Abstract

The application discloses a single-crankshaft starting method, a single-crankshaft starting device, a vehicle and a computer storage medium. The single-crankshaft starting method comprises the following steps: double ignition is performed on an engine, the ignition cylinder with the maximum temperature in the exhaust stroke is obtained, and it is judged that the ignition cylinder is in the correct ignition timing, or the ignition cylinder with the maximum pressure in the exhaust stroke is obtained, and it is judged that the ignition cylinder is in the correct ignition timing; the ignition cylinder in the correct ignition timing is obtained; normal ignition is performed on the ignition cylinder in the correct ignition timing, starting information of the engine is obtained and verified; according to the fact that the starting information does not meet normal driving conditions, the above steps are repeated; and according to the fact that the starting information meets normal driving conditions, a normal driving mode is entered. The single-crankshaft starting method can realize normal driving in the single-crankshaft starting mode.

Description

Technical Field

[0001] This invention relates to the field of vehicle starting technology, and in particular to a single crankshaft starting method, a single crankshaft starting device, a vehicle, and a computer storage medium. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] When an engine malfunctions and can only be started via a single crankshaft, it loses the camshaft signal, making it impossible to determine ignition timing and resulting in difficulty starting the engine. Existing dual ignition systems ignite the engine's cylinders simultaneously to start the engine.

[0004] However, dual ignition is an abnormal ignition of the engine, which can easily affect the engine's lifespan. Therefore, vehicles with dual ignition can only enter limp mode when starting with a single crankshaft. Summary of the Invention

[0005] The objective of this invention is to at least solve the problem that vehicles with dual ignition systems can only enter limp mode during single-crankshaft start-up. This objective is achieved through the following technical solution:

[0006] A first aspect of the present invention provides a single crankshaft starting method, comprising:

[0007] The engine is dual-ignited. The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing. Alternatively, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing.

[0008] Obtain the ignition cylinder at the correct ignition timing;

[0009] Normal ignition is performed on the ignition cylinder at the correct ignition timing to obtain and verify the engine start-up information;

[0010] If the startup information does not meet normal driving conditions, repeat the above steps;

[0011] Based on the startup information, which meets the normal driving conditions, the vehicle enters normal driving mode.

[0012] The single-crankshaft starting method of this invention performs dual ignition in single-crankshaft starting mode, determining the ignition cylinder at the correct ignition timing by measuring the temperature or pressure of the exhaust stroke. The ignition cylinder at the correct ignition timing is ignited, and engine information is checked to verify the accuracy of the correct ignition timing determination. If the engine starting information does not meet normal driving conditions, the verification fails. The above steps are repeated until the engine starting information meets normal driving conditions. If the engine starting information meets normal driving conditions, the verification passes, the ignition timing is correct, the engine ignites normally, and normal driving can proceed.

[0013] In some embodiments, the step of obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing includes:

[0014] The ignition cylinders during the dual ignition process are obtained and recorded as the first ignition cylinder and the second ignition cylinder;

[0015] Obtain the first temperature during the exhaust stroke of the first ignition cylinder and the second temperature during the exhaust stroke of the second ignition cylinder;

[0016] Compare the first temperature and the second temperature;

[0017] Based on the fact that the first temperature is greater than the second temperature, it is determined that the first ignition cylinder is at the correct ignition timing;

[0018] Based on the fact that the first temperature is lower than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

[0019] In some embodiments, based on the ignition cylinder with the highest exhaust stroke temperature and determining it to be at the correct ignition timing, the step of normally igniting the ignition cylinder at the correct ignition timing to obtain and verify the engine start information includes:

[0020] Perform normal ignition on the ignition cylinder that is at the correct ignition timing;

[0021] The engine start information is obtained, including the engine speed, the third temperature of the exhaust stroke of the first ignition cylinder, and the fourth temperature of the exhaust stroke of the second ignition cylinder.

[0022] Compare the third temperature and the fourth temperature, and compare the engine speed with the normal speed range;

[0023] When the first ignition cylinder is at the correct ignition timing, based on the fact that the third temperature is greater than the fourth temperature and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0024] When the second ignition cylinder is at the correct ignition timing, based on the fact that the third temperature is less than the fourth temperature and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0025] In some embodiments, the step of obtaining the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing includes:

[0026] The ignition cylinders during the dual ignition process are obtained and recorded as the first ignition cylinder and the second ignition cylinder;

[0027] Obtain the first pressure during the exhaust stroke of the first ignition cylinder and the second pressure during the exhaust stroke of the second ignition cylinder;

[0028] Based on the fact that the first pressure is greater than the second pressure, it is determined that the first ignition cylinder is at the correct ignition timing;

[0029] Based on the fact that the first pressure is less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

[0030] In some embodiments, based on the ignition cylinder with the highest exhaust stroke pressure and determining it to be at the correct ignition timing, the step of normally igniting the ignition cylinder at the correct ignition timing to obtain and verify the engine start information includes:

[0031] Perform normal ignition on the ignition cylinder that is at the correct ignition timing;

[0032] The engine start information is obtained, including the engine speed, the third pressure of the exhaust stroke of the first ignition cylinder, and the fourth pressure of the exhaust stroke of the second ignition cylinder.

[0033] Compare the third pressure and the fourth pressure, and compare the engine speed with the normal speed range;

[0034] When the first ignition cylinder is at the correct ignition timing, based on the fact that the third pressure is greater than the fourth pressure and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0035] When the second ignition cylinder is at the correct ignition timing, based on the fact that the third pressure is less than the fourth pressure and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0036] In some embodiments, the step of performing dual ignition on the engine, identifying the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing, or identifying the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing, includes:

[0037] The engine is dual-ignitioned in dual-ignition mode, and then enters limp torque limiting mode.

[0038] The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing; or, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing.

[0039] Exit the dual ignition mode;

[0040] The step of entering normal driving mode based on the startup information meeting normal driving conditions includes:

[0041] Based on the engine start information meeting normal driving conditions, exit the limp torque limiting mode and enter the normal driving mode.

[0042] In some embodiments, the single crankshaft start method further includes:

[0043] Acquire camshaft and crankshaft signals, and determine whether there are any errors in the camshaft and crankshaft signals;

[0044] Based on the error in the camshaft signal and the normality of the crankshaft signal, the system enters single crankshaft start mode.

[0045] A second aspect of the present invention provides a single crankshaft starting device for implementing the single crankshaft starting method of the first aspect above, the single crankshaft starting device comprising:

[0046] Dual ignition module, used for dual ignition of the engine;

[0047] The acquisition module is used to acquire the ignition cylinder with the highest temperature during the exhaust stroke and determine it to be at the correct ignition timing, or to acquire the ignition cylinder with the highest pressure during the exhaust stroke and determine it to be at the correct ignition timing, and is used to acquire the ignition cylinder at the correct ignition timing.

[0048] The ignition module is used to ignite the ignition cylinder at the correct ignition timing.

[0049] The detection module is used to acquire and verify the engine's start-up information;

[0050] The judgment module is used to repeat the steps of the above module if the startup information does not meet the normal driving conditions, and to enter the normal driving mode if the startup information meets the normal driving conditions.

[0051] A third aspect of the invention provides a vehicle including a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the single crankshaft starting method described in the first aspect above.

[0052] A fourth aspect of the present invention is a computer storage medium storing computer-readable instructions that, when read by one or more processors, cause one or more processors to perform the steps of the single crankshaft start method described in the first aspect above. Attached Figure Description

[0053] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0054] Figure 1 This is a schematic diagram of a single crankshaft start-up method according to some embodiments of the present invention;

[0055] Figure 2 This is a logic diagram of a single crankshaft start-up method according to some embodiments of the present invention;

[0056] Figure 3 This is a logic diagram of the first step in some embodiments of the present invention;

[0057] Figure 4 This is a logic diagram of the second step in some embodiments of the present invention;

[0058] Figure 5 This is a schematic diagram of a single crankshaft starting device according to some embodiments of the present invention. Detailed Implementation

[0059] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0060] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0062] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0063] Ignition timing refers to the moment when the spark plug generates an electric spark at the right time when the engine piston is near the top dead center of the compression stroke, igniting the combustible mixture and enabling the engine to perform normal combustion and work.

[0064] If ignition is too early, the air-fuel mixture burns prematurely during the compression stroke, causing reverse pressure on the piston, leading to engine knocking, reduced engine power, increased fuel consumption, and even damage to engine components. If ignition is too late, the mixture burns only after the piston has already begun its downward stroke; the pressure generated by combustion is insufficient to fully push the piston, also reducing engine power and efficiency.

[0065] When an engine can only be started by a single crankshaft due to a malfunction, the engine loses the camshaft signal and therefore cannot determine the ignition timing, making it difficult for the engine to ignite.

[0066] In existing dual ignition schemes, the top dead center (TDC) is determined by finding characteristic teeth on the crankshaft, thus enabling the identification of cylinders where the piston is near TDC. However, due to the loss of camshaft signals, it is impossible to determine whether the piston in the cylinder is in the compression or exhaust stroke, and therefore impossible to determine which specific cylinder's piston is at the ignition timing. Existing technology performs dual ignition, causing simultaneous ignition actions in cylinders where the piston is near TDC, thereby starting the engine.

[0067] However, dual ignition is an abnormal ignition of the engine, which can easily affect the engine's lifespan. Therefore, in the existing technology, vehicles with dual ignition when starting with a single crankshaft can only enter limp mode. By limiting the engine's output power in limp mode, the engine can be kept running while minimizing damage to the engine.

[0068] To at least address the issue that vehicles with dual ignition systems can only enter limp mode during single crankshaft start-up, embodiments of the present invention propose a single crankshaft start-up method that enables normal driving in single crankshaft start-up mode.

[0069] The single crankshaft starting method of this invention is described below with reference to the accompanying drawings.

[0070] Combination Figure 1 and Figure 2 As shown, the single crankshaft start method of an embodiment of the present invention includes:

[0071] S100: Perform dual ignition on the engine, obtain the ignition cylinder with the highest temperature during the exhaust stroke and determine it to be at the correct ignition timing, or obtain the ignition cylinder with the highest pressure during the exhaust stroke and determine it to be at the correct ignition timing.

[0072] S200, Obtain the ignition cylinder at the correct ignition timing;

[0073] S300: Perform normal ignition on the ignition cylinders at the correct ignition timing to obtain and verify the engine start-up information;

[0074] S400: If the startup information does not meet normal driving conditions, repeat the above steps.

[0075] S500: Based on the startup information, if the driving conditions are met, enter normal driving mode.

[0076] S100: Perform dual ignition on the engine, identify the ignition cylinder with the highest temperature during the exhaust stroke and determine it to be at the correct ignition timing, or identify the ignition cylinder with the highest pressure during the exhaust stroke and determine it to be at the correct ignition timing.

[0077] An ignition cylinder is a cylinder that performs the ignition action during the ignition process.

[0078] During dual ignition, the temperature of the ignition cylinder in the compression stroke during the exhaust stroke is higher than that of the ignition cylinder in the exhaust stroke. Therefore, the ignition cylinder with the highest temperature during the exhaust stroke is the ignition cylinder in the compression stroke. Since the ignition cylinder in the compression stroke is at the correct ignition timing, the ignition cylinder with the highest temperature during the exhaust stroke is judged to be at the correct ignition timing, thus achieving the judgment of correct ignition timing.

[0079] During dual ignition, the pressure of the ignition cylinder in the compression stroke during the exhaust stroke is greater than that of the ignition cylinder in the exhaust stroke during the exhaust stroke. Therefore, the ignition cylinder with the highest pressure during the exhaust stroke is the ignition cylinder in the compression stroke. Since the ignition cylinder in the compression stroke is at the correct ignition timing, the ignition cylinder with the highest pressure during the exhaust stroke is judged to be at the correct ignition timing, thus achieving the judgment of correct ignition timing.

[0080] like Figure 3 As shown, in some embodiments, the step of obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing includes:

[0081] Obtain the ignition cylinders during the dual ignition process and record them as the first ignition cylinder and the second ignition cylinder;

[0082] Obtain the first temperature during the exhaust stroke of the first ignition cylinder and the second temperature during the exhaust stroke of the second ignition cylinder;

[0083] Compare the first temperature and the second temperature;

[0084] Based on the fact that the first temperature is greater than the second temperature, it is determined that the first ignition cylinder is at the correct ignition timing;

[0085] Based on the fact that the first temperature is lower than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

[0086] By acquiring and recording the ignition cylinders during the dual ignition process as the first ignition cylinder and the second ignition cylinder, the ignition cylinders can be distinguished to facilitate the determination of correct ignition timing. The first temperature of the first ignition cylinder during its exhaust stroke and the second temperature of the second ignition cylinder during their exhaust strokes are acquired and compared. If the first temperature is greater than the second temperature, the first ignition cylinder is determined to be at the correct ignition timing; if the first temperature is less than the second temperature, the second ignition cylinder is determined to be at the correct ignition timing, thus achieving the determination of correct ignition timing.

[0087] like Figure 4 As shown, in some embodiments, the step of obtaining the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing includes:

[0088] Obtain the ignition cylinders during the dual ignition process and record them as the first ignition cylinder and the second ignition cylinder;

[0089] Obtain the first pressure during the exhaust stroke of the first ignition cylinder and the second pressure during the exhaust stroke of the second ignition cylinder;

[0090] Based on the fact that the first pressure is greater than the second pressure, it is determined that the first ignition cylinder is at the correct ignition timing;

[0091] Based on the fact that the first pressure is less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

[0092] By acquiring and recording the ignition cylinders during the dual ignition process as the first ignition cylinder and the second ignition cylinder, the ignition cylinders can be distinguished to facilitate the determination of correct ignition timing. The first pressure of the first ignition cylinder during its exhaust stroke and the second pressure of the second ignition cylinder during their exhaust strokes are acquired and compared. If the first pressure is greater than the second pressure, the first ignition cylinder is determined to be at the correct ignition timing; if the first pressure is less than the second pressure, the second ignition cylinder is determined to be at the correct ignition timing, thus achieving the determination of correct ignition timing.

[0093] S200, Obtain the ignition cylinder at the correct ignition timing.

[0094] This is to ensure proper ignition in subsequent steps based on ignition timing and ignition cylinder.

[0095] S300: Perform normal ignition on the ignition cylinders at the correct ignition timing to obtain and verify the engine start-up information.

[0096] Step S300 allows for the inspection and judgment of the engine's state after normal ignition, thereby verifying the correctness of the ignition cylinder at the correct ignition timing.

[0097] In some embodiments, based on the ignition cylinder with the highest exhaust stroke temperature and determining it to be at the correct ignition timing, step S300 involves normally igniting the ignition cylinder at the correct ignition timing to obtain and verify the engine start information, including:

[0098] Perform normal ignition on the ignition cylinder that is at the correct ignition timing;

[0099] Obtain engine start information, which includes engine speed, third temperature of the first ignition cylinder exhaust stroke, and fourth temperature of the second ignition cylinder exhaust stroke.

[0100] Compare the third and fourth temperatures, and compare the engine speed with the normal speed range;

[0101] When the first ignition cylinder has the correct ignition timing, based on the fact that the third temperature is greater than the fourth temperature and the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0102] When the second ignition cylinder has the correct ignition timing, based on the fact that the third temperature is lower than the fourth temperature and the engine speed is within the normal range, it is determined that the engine starting information meets the normal driving conditions.

[0103] The relationship between the third and fourth temperatures can be used to verify the correct ignition timing. Furthermore, the fact that the engine speed is within the normal range can further confirm the correctness of the ignition timing.

[0104] When the first ignition cylinder has the correct ignition timing, based on the fact that the third temperature is greater than the fourth temperature and the engine speed is within the normal range, the engine starting information is determined to meet normal driving conditions. When the second ignition cylinder has the correct ignition timing, based on the fact that the third temperature is less than the fourth temperature and the engine speed is within the normal range, the engine starting information is determined to meet normal driving conditions.

[0105] In some embodiments, based on the ignition cylinder with the highest exhaust stroke pressure and determining it to be at the correct ignition timing, S300, the ignition cylinder at the correct ignition timing is ignited normally to acquire and verify the engine start information, including:

[0106] Perform normal ignition on the ignition cylinder that is at the correct ignition timing;

[0107] Obtain engine start information, which includes engine speed, third pressure of the first ignition cylinder exhaust stroke, and fourth pressure of the second ignition cylinder exhaust stroke.

[0108] Compare the third and fourth pressures, and compare the engine speed with the normal speed range;

[0109] When the first ignition cylinder has the correct ignition timing, based on the fact that the third pressure is greater than the fourth pressure and the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0110] When the second ignition cylinder has the correct ignition timing, based on the fact that the third pressure is less than the fourth pressure and the engine speed is within the normal range, it is determined that the engine starting information meets the normal driving conditions.

[0111] The relationship between the third and fourth pressures can be used to verify the correct ignition timing. If the engine speed is within the normal range, the correctness of the ignition timing can be further confirmed.

[0112] When the first ignition cylinder has the correct ignition timing, based on the third pressure being greater than the fourth pressure and the engine speed being within the normal range, it is determined that the engine starting information meets normal operating conditions. When the second ignition cylinder has the correct ignition timing, based on the third pressure being less than the fourth pressure and the engine speed being within the normal range, it is determined that the engine starting information meets normal operating conditions.

[0113] S400: If the startup information does not meet normal driving conditions, repeat S100, S200 and S300.

[0114] If the engine starting information does not meet normal driving conditions, it means that there is an error in the ignition cylinder that is in the correct ignition timing. Repeat steps S100, S200 and S300 to re-evaluate the ignition cylinder with the correct ignition timing until the engine starting information meets normal driving conditions.

[0115] S500: Based on the startup information, if the driving conditions are met, enter normal driving mode.

[0116] When the engine start information meets the normal driving conditions, it means that the ignition cylinder with the correct ignition timing is correct, the engine has started normally, and it enters the normal driving mode for normal driving.

[0117] The single-crankshaft starting method of this invention performs dual ignition in single-crankshaft starting mode. The ignition cylinder at the correct ignition timing is determined by the temperature or pressure of its exhaust stroke. The cylinder at the correct ignition timing is ignited, and the engine information is checked to verify the accuracy of the correct ignition timing determination. If the engine starting information does not meet normal driving conditions, the verification fails. The above steps are repeated until the engine starting information meets normal driving conditions. If the engine starting information meets normal driving conditions, the verification passes, the ignition timing is correct, the engine ignites normally, and normal driving can proceed.

[0118] Furthermore, if the number of times S100, S200, and S300 are repeated exceeds a preset number, the startup will be stopped to protect the vehicle.

[0119] In some embodiments, S100, the step of performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature during the exhaust stroke, and determining it to be at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing, includes:

[0120] Enter dual ignition mode to ignite the engine twice, and enter limp torque limiting mode;

[0121] The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing; or, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing.

[0122] Exit dual ignition mode;

[0123] The steps to enter normal driving mode based on the startup information indicating that normal driving conditions are met include:

[0124] Based on the engine start information indicating that normal driving conditions are met, exit limp torque limiting mode and enter normal driving mode.

[0125] By entering dual ignition mode to ignite both ignition cylinders and then entering limp torque limiting mode, the engine is protected, reducing damage caused by abnormal ignition. The system then acquires ignition cylinders with the correct ignition timing and exits dual ignition mode to facilitate normal ignition.

[0126] When the engine start information meets the normal driving conditions, it means that the engine can ignite and run normally. It exits the limp torque limiting mode and enters the normal driving mode to facilitate normal driving.

[0127] In some embodiments, the single crankshaft start method further includes:

[0128] Acquire camshaft and crankshaft signals, and determine if there are any errors in the camshaft and crankshaft signals;

[0129] Based on the error in the camshaft signal and the normal crankshaft signal, the system enters single crankshaft start mode.

[0130] The engine starting mode is determined by the camshaft and crankshaft signals. Understandably, when both camshaft and crankshaft signals are error-free, normal starting occurs. If the camshaft signal is faulty, but the crankshaft signal is normal, starting can only be attempted based on the crankshaft signal, thus entering single-crankshaft start mode.

[0131] Furthermore, the vehicle issues an error signal based on the camshaft signal error.

[0132] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0133] Based on the same inventive concept, this application also provides a single crankshaft starting device for implementing the single crankshaft starting method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the single crankshaft starting device provided below can be found in the limitations of the single crankshaft starting method described above, and will not be repeated here.

[0134] like Figure 5 As shown, the single crankshaft starting device of this embodiment of the invention is used to implement the single crankshaft starting method of the above embodiment. The single crankshaft starting device includes:

[0135] Dual ignition module, used for dual ignition of the engine;

[0136] The acquisition module is used to acquire the ignition cylinder with the highest temperature during the exhaust stroke and determine it to be in the correct ignition timing, or to acquire the ignition cylinder with the highest pressure during the exhaust stroke and determine it to be in the correct ignition timing, and is used to acquire the ignition cylinder in the correct ignition timing.

[0137] The ignition module is used to properly ignite the ignition cylinder when it is at the correct ignition timing.

[0138] The detection module is used to acquire and verify the engine's start-up information;

[0139] The judgment module is used to repeat the steps of the above module if the startup information does not meet the normal driving conditions, and to enter the normal driving mode if the startup information meets the normal driving conditions.

[0140] In some embodiments, the acquisition module is further configured to:

[0141] Obtain the ignition cylinders during the dual ignition process and record them as the first ignition cylinder and the second ignition cylinder;

[0142] Obtain the first temperature during the exhaust stroke of the first ignition cylinder and the second temperature during the exhaust stroke of the second ignition cylinder;

[0143] The judgment module is also used for:

[0144] Compare the first temperature and the second temperature;

[0145] Based on the fact that the first temperature is greater than the second temperature, it is determined that the first ignition cylinder is at the correct ignition timing;

[0146] Based on the fact that the first temperature is lower than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

[0147] In some embodiments, the ignition module is further configured to:

[0148] Perform normal ignition according to the correct ignition timing;

[0149] The acquisition module is also used for:

[0150] Obtain engine start information, which includes engine speed, third temperature of the first ignition cylinder exhaust stroke, and fourth temperature of the second cylinder exhaust stroke.

[0151] The judgment module is also used for:

[0152] Compare the third and fourth temperatures, and compare the engine speed with the normal speed range;

[0153] When the first ignition cylinder has the correct ignition timing, based on the fact that the third temperature is greater than the fourth temperature and the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0154] When the second ignition cylinder has the correct ignition timing, based on the fact that the third temperature is lower than the fourth temperature and the engine speed is within the normal range, it is determined that the engine starting information meets the normal driving conditions.

[0155] In some embodiments, the acquisition module is further configured to:

[0156] Obtain the ignition cylinders during the dual ignition process and record them as the first ignition cylinder and the second ignition cylinder;

[0157] Obtain the first pressure during the exhaust stroke of the first ignition cylinder and the second pressure during the exhaust stroke of the second ignition cylinder;

[0158] The judgment module is also used for:

[0159] Based on the fact that the first pressure is greater than the second pressure, it is determined that the first ignition cylinder is at the correct ignition timing;

[0160] Based on the fact that the first pressure is less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

[0161] In some embodiments, the ignition module is further configured to:

[0162] Perform normal ignition according to the correct ignition timing;

[0163] The acquisition module is also used for:

[0164] Obtain engine start information, which includes engine speed, third pressure of the first ignition cylinder exhaust stroke, and fourth pressure of the second cylinder exhaust stroke.

[0165] The judgment module is also used for:

[0166] Compare the third and fourth pressures, and compare the engine speed with the normal speed range;

[0167] When the first ignition cylinder has the correct ignition timing, based on the fact that the third pressure is greater than the fourth pressure and the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

[0168] When the second ignition cylinder has the correct ignition timing, based on the fact that the third pressure is less than the fourth pressure and the engine speed is within the normal range, it is determined that the engine starting information meets the normal driving conditions.

[0169] In some embodiments, the dual ignition module is further configured to:

[0170] Enter dual ignition mode to ignite the engine twice, and enter limp torque limiting mode;

[0171] The acquisition module is also used for:

[0172] The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing; or, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing.

[0173] Dual ignition modules are also used for:

[0174] Exit dual ignition mode.

[0175] The judgment module is also used for:

[0176] Based on the engine start information indicating that normal driving conditions are met, exit limp torque limiting mode and enter normal driving mode.

[0177] In some embodiments, the determining module is further configured to:

[0178] Acquire camshaft and crankshaft signals, and determine if there are any errors in the camshaft and crankshaft signals;

[0179] Based on the error in the camshaft signal and the normal crankshaft signal, the system enters single crankshaft start mode.

[0180] An embodiment of the present invention also proposes a vehicle.

[0181] The vehicle of an embodiment of the present invention includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the single crankshaft starting method as described in the above embodiment.

[0182] In this embodiment of the invention, the vehicle uses dual ignition in single-crankshaft start mode. The temperature or pressure of the exhaust stroke of the ignition cylinder determines whether the ignition cylinder is at the correct ignition timing. The ignition cylinder at the correct timing is ignited, and the engine information is checked to verify the accuracy of the correct ignition timing determination. If the verification passes, it indicates that the engine is igniting normally, thus enabling normal driving.

[0183] Furthermore, the vehicle includes computer equipment, which comprises a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor of this computer equipment provides computational and control capabilities. The memory of this computer equipment includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The I / O interfaces of this computer equipment are used for exchanging information between the processor and external devices. The communication interface of this computer equipment is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements the single crankshaft start method described above.

[0184] Embodiments of the present invention also propose a computer storage medium.

[0185] The computer storage medium of the present invention stores computer-readable instructions, which, when read by one or more processors, cause one or more processors to execute the steps of the single crankshaft start method as described in the above embodiment.

[0186] In the computer storage medium of this invention, when computer-readable instructions are read by one or more processors, the one or more processors execute dual ignition in single crankshaft start mode, determine the ignition cylinder with the correct ignition timing by measuring the temperature or pressure of the ignition cylinder exhaust stroke, ignite the ignition cylinder with the correct ignition timing, and verify the engine information to confirm the accuracy of the correct ignition timing determination. If the verification is successful, it indicates that the engine is igniting normally, thereby enabling normal driving.

[0187] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable storage media include: electrical connections (electronic devices) having one or more wires, portable computer disks (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM, or flash memory), fiber optic devices, and compact disc read-only memory (CDROM). Furthermore, computer-readable storage media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0188] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0189] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A single crankshaft starting method, characterized in that, include: The engine is dual-ignited. The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing. Alternatively, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing. Obtain the ignition cylinder at the correct ignition timing; Normal ignition is performed on the ignition cylinder at the correct ignition timing to obtain and verify the engine start-up information; If the startup information does not meet normal driving conditions, repeat the above steps; Based on the startup information, which meets the normal driving conditions, the vehicle enters normal driving mode.

2. The single crankshaft starting method according to claim 1, characterized in that, The step of obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing includes: The ignition cylinders during the dual ignition process are obtained and recorded as the first ignition cylinder and the second ignition cylinder; Obtain the first temperature during the exhaust stroke of the first ignition cylinder and the second temperature during the exhaust stroke of the second ignition cylinder; Compare the first temperature and the second temperature; Based on the fact that the first temperature is greater than the second temperature, it is determined that the first ignition cylinder is at the correct ignition timing; Based on the fact that the first temperature is lower than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

3. The single crankshaft starting method according to claim 2, characterized in that, Based on the ignition cylinder with the highest exhaust stroke temperature, and determining it to be at the correct ignition timing, the step of performing normal ignition on the ignition cylinder at the correct ignition timing to obtain and verify the engine start-up information includes: Perform normal ignition on the ignition cylinder that is at the correct ignition timing; The engine start information is obtained, including the engine speed, the third temperature of the exhaust stroke of the first ignition cylinder, and the fourth temperature of the exhaust stroke of the second ignition cylinder. Compare the third temperature and the fourth temperature, and compare the engine speed with the normal speed range; When the first ignition cylinder is at the correct ignition timing, based on the fact that the third temperature is greater than the fourth temperature and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions. When the second ignition cylinder is at the correct ignition timing, based on the fact that the third temperature is less than the fourth temperature and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

4. The single crankshaft starting method according to claim 1, characterized in that, The step of obtaining the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing includes: The ignition cylinders during the dual ignition process are obtained and recorded as the first ignition cylinder and the second ignition cylinder; Obtain the first pressure during the exhaust stroke of the first ignition cylinder and the second pressure during the exhaust stroke of the second ignition cylinder; Based on the fact that the first pressure is greater than the second pressure, it is determined that the first ignition cylinder is at the correct ignition timing; Based on the fact that the first pressure is less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

5. The single crankshaft starting method according to claim 4, characterized in that, Based on the ignition cylinder with the highest exhaust stroke pressure, and determining it to be at the correct ignition timing, the process of normally igniting the ignition cylinder at the correct ignition timing, and acquiring and verifying the engine's start-up information, includes: Perform normal ignition on the ignition cylinder that is at the correct ignition timing; The engine start information is obtained, including the engine speed, the third pressure of the exhaust stroke of the first ignition cylinder, and the fourth pressure of the exhaust stroke of the second ignition cylinder. Compare the third pressure and the fourth pressure, and compare the engine speed with the normal speed range; When the first ignition cylinder is at the correct ignition timing, based on the fact that the third pressure is greater than the fourth pressure and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions. When the second ignition cylinder is at the correct ignition timing, based on the fact that the third pressure is less than the fourth pressure and the fact that the engine speed is within the normal speed range, it is determined that the engine starting information meets the normal driving conditions.

6. The single crankshaft starting method according to any one of claims 1 to 5, characterized in that, The step of performing dual ignition on the engine, identifying the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing, or identifying the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be at the correct ignition timing, includes: The engine is dual-ignitioned in dual-ignition mode, and then enters limp torque limiting mode. The ignition cylinder with the highest temperature during the exhaust stroke is identified and determined to be at the correct ignition timing; or, the ignition cylinder with the highest pressure during the exhaust stroke is identified and determined to be at the correct ignition timing. Exit the dual ignition mode; The step of entering normal driving mode based on the startup information meeting normal driving conditions includes: Based on the engine start information meeting normal driving conditions, exit the limp torque limiting mode and enter the normal driving mode.

7. The single crankshaft starting method according to any one of claims 1 to 5, characterized in that, The method of performing dual ignition on the engine, identifying the ignition cylinder with the highest temperature during the exhaust stroke and determining it to be at the correct ignition timing, or identifying the ignition cylinder with the highest pressure during the exhaust stroke and determining it to be before the correct ignition timing, further includes: Acquire camshaft and crankshaft signals, and determine whether there are any errors in the camshaft and crankshaft signals; Based on the error in the camshaft signal and the normality of the crankshaft signal, the system enters single crankshaft start mode.

8. A single crankshaft starting device, characterized in that, For implementing the single crankshaft starting method as described in any one of claims 1 to 7, the single crankshaft starting device comprises: Dual ignition module, used for dual ignition of the engine; The acquisition module is used to acquire the ignition cylinder with the highest temperature during the exhaust stroke and determine it to be at the correct ignition timing, or to acquire the ignition cylinder with the highest pressure during the exhaust stroke and determine it to be at the correct ignition timing, and is used to acquire the ignition cylinder at the correct ignition timing. The ignition module is used to ignite the ignition cylinder at the correct ignition timing. The detection module is used to acquire and verify the engine's start-up information; The judgment module is used to repeat the steps of the above module if the startup information does not meet the normal driving conditions, and to enter the normal driving mode if the startup information meets the normal driving conditions.

9. A vehicle, characterized in that, It includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the single crankshaft start method according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer-readable instructions that, when read by one or more processors, cause one or more processors to perform the steps of the single crankshaft start method as described in any one of claims 1 to 7.

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