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

Abstract

The invention 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 steps that double ignition is conducted on an engine, an ignition cylinder with the maximum temperature in the exhaust stroke is obtained and judged to be in the correct ignition timing, or an ignition cylinder with the maximum pressure in the exhaust stroke is obtained and judged to be in the correct ignition timing; acquiring an ignition cylinder in correct ignition timing; normal ignition is conducted on the ignition cylinder at the correct ignition timing, and starting information of the engine is obtained and checked; repeating the steps according to the condition that the starting information does not meet the normal driving condition; and entering a normal driving mode according to the condition that the starting information meets the normal driving condition. According to the single-crankshaft starting method, normal driving can be achieved in the single-crankshaft starting mode.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle starting, and in particular to a single crankshaft starting method, a single crankshaft starting device, a vehicle and a computer storage medium. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] When the engine can only be started with a single crankshaft due to a fault, the engine loses the camshaft signal, so it is impossible to determine the ignition timing, making it difficult for the engine to ignite. The existing dual ignition solution ignites the ignition cylinders of the engine at the same time to start the engine.

[0004] However, dual ignition is an abnormal ignition of the engine, which can easily affect the life of the engine. Therefore, a vehicle with dual ignition during single crank start can only enter the limp home mode. Summary of the invention

[0005] The purpose of the present invention is to at least solve the problem that a dual-ignition vehicle can only enter limp home mode when starting with a single crankshaft. This purpose is achieved through the following technical solutions:

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

[0007] Performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining it to be at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining it to be at the correct ignition timing;

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

[0009] Normally igniting the ignition cylinder at the correct ignition timing, and acquiring and verifying the start-up information of the engine;

[0010] According to the startup information not meeting the normal driving conditions, repeat the above steps;

[0011] According to the startup information, the normal driving conditions are met and the normal driving mode is entered.

[0012] The single crankshaft starting method of the present invention performs dual ignition in the single crankshaft starting mode, and determines the ignition cylinder at the correct ignition timing by the temperature or pressure of the ignition cylinder exhaust stroke. The ignition cylinder at the correct ignition timing is ignited, and the engine information is checked to re-check the accuracy of the judgment of the correct ignition timing. If the engine starting information does not meet the normal driving conditions, it means that the re-check has not passed, and the above steps are repeated until the engine starting information meets the normal driving conditions. If the engine starting information meets the normal driving conditions, it means that the re-check has passed, the ignition timing is correct, the engine ignites normally, and normal driving can be carried out.

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

[0014] Obtaining the ignition cylinder in the dual ignition process and recording it as a first ignition cylinder and a second ignition cylinder;

[0015] Acquire a first temperature of an exhaust stroke of a first ignition cylinder and a second temperature of an exhaust stroke of a second ignition cylinder;

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

[0017] According to the first temperature being greater than the second temperature, determining that the first ignition cylinder is at the correct ignition timing;

[0018] According to the first temperature being lower than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

[0019] In some embodiments, according to obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining that it is at the correct ignition timing, the step of normally igniting the ignition cylinder at the correct ignition timing and obtaining and verifying the start-up information of the engine includes:

[0020] Normally igniting the ignition cylinder at the correct ignition timing;

[0021] Acquiring startup information of the engine, the startup information of the engine including a rotation speed of the engine, a third temperature of an exhaust stroke of the first ignition cylinder, and a fourth temperature of an exhaust stroke of the second ignition cylinder;

[0022] comparing the third temperature with the fourth temperature, and comparing the speed of the engine with a normal speed range;

[0023] When the first ignition cylinder is at the correct ignition timing, according to the third temperature being greater than the fourth temperature and according to the engine speed being within the normal speed range, it is determined that the engine start information meets the normal driving conditions;

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

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

[0026] Obtaining the ignition cylinder in the dual ignition process and recording it as a first ignition cylinder and a second ignition cylinder;

[0027] Acquiring a first pressure of an exhaust stroke of the first ignition cylinder and a second pressure of an exhaust stroke of the second ignition cylinder;

[0028] According to the first pressure being greater than the second pressure, determining that the first ignition cylinder is at the correct ignition timing;

[0029] According to the first pressure being less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

[0030] In some embodiments, according to obtaining the ignition cylinder with the largest pressure in the exhaust stroke and determining that it is at the correct ignition timing, the ignition cylinder at the correct ignition timing is normally ignited to obtain and verify the start-up information of the engine, including:

[0031] Normally igniting the ignition cylinder at the correct ignition timing;

[0032] Acquiring the startup information of the engine, the startup information of the engine including the rotation speed of the engine, 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] comparing the third pressure with the fourth pressure, and comparing the speed of the engine with a normal speed range;

[0034] When the first ignition cylinder is at the correct ignition timing, according to the third pressure being greater than the fourth pressure and according to the engine speed being within the normal speed range, it is determined that the engine start information meets the normal driving conditions;

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

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

[0037] Entering a dual ignition mode to dual-ignite the engine and entering a limp home torque limiting mode;

[0038] 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;

[0039] exiting the dual ignition mode;

[0040] The step of entering the normal driving mode according to the startup information meeting the normal driving conditions comprises:

[0041] According to the engine startup information meeting the normal driving conditions, the limp home torque limiting mode is exited and the normal driving mode is entered.

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

[0043] Acquire a camshaft signal and a crankshaft signal, and determine whether there is an error in the camshaft signal and the crankshaft signal;

[0044] According to the camshaft signal having an error and the crankshaft signal being normal, the single crankshaft starting mode is entered.

[0045] A second aspect of the present invention provides a single crankshaft starting device, which is used to implement the single crankshaft starting method of the first aspect above, and the single crankshaft starting device comprises:

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

[0047] an acquisition module, 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 to acquire the ignition cylinder at the correct ignition timing;

[0048] An ignition module, used for normally igniting the ignition cylinder at the correct ignition timing;

[0049] A detection module, used for acquiring and checking the startup information of the engine;

[0050] The judgment module is used to repeat the steps of the above modules according to the startup information not meeting the normal driving conditions, and to enter the normal driving mode according to the startup information meeting the normal driving conditions.

[0051] A third aspect of the present invention provides a vehicle, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the single crankshaft starting method described in the first aspect above are implemented.

[0052] A fourth aspect of the present invention is a computer storage medium having computer-readable instructions stored thereon, wherein when the computer-readable instructions are read by one or more processors, the one or more processors execute the steps of the single crankshaft starting method as described in the first aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0054] Figure 1 A schematic diagram of a single crankshaft starting method according to some embodiments of the present invention;

[0055] Figure 2 A logic diagram of a single crankshaft starting method according to some embodiments of the present invention;

[0056] Figure 3 A logic diagram of the first step of some embodiments of the present invention;

[0057] Figure 4 A logic diagram of the second step of some embodiments of the present invention;

[0058] Figure 5 Schematic diagram of a single crankshaft starting device according to some embodiments of the present invention. DETAILED DESCRIPTION

[0059] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0060] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0062] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will 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 can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0063] Ignition timing refers to the moment when the engine piston runs to the top dead center of the compression stroke, when the spark plug generates an electric spark in a timely manner to ignite the combustible mixture and enable the engine to achieve normal combustion and work.

[0064] If the ignition is too early, the mixture will burn too early in the compression stroke, which will cause the piston to be subjected to reverse pressure, causing engine knock, reducing engine power, increasing fuel consumption, and even damaging engine components. If the ignition is too late, the mixture will burn when the piston has begun to move downward, and the pressure generated by the combustion cannot fully push the piston, which will also reduce the power and efficiency of the engine.

[0065] When the engine can only be started with a single crankshaft due to a fault, the engine loses the camshaft signal and is therefore unable to determine the ignition timing, causing the engine to be difficult to ignite.

[0066] In the existing dual ignition scheme, the top dead center is determined by finding the characteristic teeth of the crankshaft, so that the cylinder where the piston is near the top dead center can be found. However, since the camshaft signal is lost, it is impossible to determine whether the piston in the cylinder is in the compression stroke or the exhaust stroke, and thus it is impossible to determine which specific cylinder's piston is at the ignition timing. In the prior art, dual ignition is performed, so that the ignition action is performed simultaneously in the cylinder where the piston is near the top dead center, thereby starting the engine.

[0067] However, dual ignition is an abnormal ignition of the engine, which can easily affect the life of the engine. Therefore, in the prior art, a vehicle with dual ignition during single crank start can only enter a limp home mode, which limits the output power of the engine, thereby allowing the engine to run with reduced damage to the engine.

[0068] In order to at least solve the problem that a dual-ignition vehicle can only enter a limp home mode during single crankshaft starting, an embodiment of the present invention provides a single crankshaft starting method, which can enable normal driving in a single crankshaft starting mode.

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

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

[0071] S100, performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining that it is at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining that it is at the correct ignition timing;

[0072] S200, obtaining an ignition cylinder at a correct ignition timing;

[0073] S300, igniting the ignition cylinder at the correct ignition timing normally, and obtaining and checking the start information of the engine;

[0074] S400, repeating the above steps according to the startup information not meeting normal driving conditions;

[0075] S500: According to the startup information, the normal driving conditions are met, and the normal driving mode is entered.

[0076] S100, performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining that it is at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining that it is at the correct ignition timing.

[0077] The ignition cylinder refers to the cylinder that performs the ignition action during the ignition process.

[0078] During the dual ignition process, the temperature of the exhaust stroke of the ignition cylinder in the compression stroke is greater than the exhaust stroke of the ignition cylinder in the exhaust stroke. Therefore, the ignition cylinder with the highest temperature in 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 in the exhaust stroke is judged to be at the correct ignition timing, thereby achieving the judgment of the correct ignition timing.

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

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

[0081] Obtaining the ignition cylinder in the dual ignition process and recording it as the first ignition cylinder and the second ignition cylinder;

[0082] Acquire a first temperature of an exhaust stroke of a first ignition cylinder and a second temperature of an exhaust stroke of a second ignition cylinder;

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

[0084] According to the first temperature being greater than the second temperature, determining that the first ignition cylinder is at a correct ignition timing;

[0085] According to the first temperature being less than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing.

[0086] By obtaining the ignition cylinders in the dual ignition process and recording them as the first ignition cylinder and the second ignition cylinder, the ignition cylinders can be distinguished to facilitate the determination of the correct ignition timing. The first temperature of the exhaust stroke of the first ignition cylinder and the second temperature of the exhaust stroke of the second ignition cylinder are obtained, and the first temperature and the second temperature are compared, thereby comparing the temperatures of the first ignition cylinder and the second ignition cylinder. According to the first temperature being greater than the second temperature, it is determined that the first ignition cylinder is at the correct ignition timing, and according to the first temperature being less than the second temperature, it is determined that the second ignition cylinder is at the correct ignition timing, thereby achieving the determination of the correct ignition timing.

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

[0088] Obtaining the ignition cylinder in the dual ignition process and recording it as the first ignition cylinder and the second ignition cylinder;

[0089] Acquire a first pressure of an exhaust stroke of a first ignition cylinder and a second pressure of an exhaust stroke of a second ignition cylinder;

[0090] According to the first pressure being greater than the second pressure, determining that the first ignition cylinder is at a correct ignition timing;

[0091] According to the first pressure being less than the second pressure, it is determined that the second ignition cylinder is at the correct ignition timing.

[0092] By obtaining the ignition cylinders in the dual ignition process and recording them as the first ignition cylinder and the second ignition cylinder, the ignition cylinders can be distinguished to facilitate the determination of the correct ignition timing. The first pressure of the exhaust stroke of the first ignition cylinder and the second pressure of the exhaust stroke of the second ignition cylinder are obtained, and the first pressure and the second pressure are compared, thereby comparing the pressures of the first ignition cylinder and the second ignition cylinder. According to 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, and according to 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, thereby achieving the determination of the correct ignition timing.

[0093] S200: Acquire an ignition cylinder at a correct ignition timing.

[0094] This allows for normal ignition according to the ignition timing and ignition cylinder in subsequent steps.

[0095] S300: Normally ignite the ignition cylinder at the correct ignition timing, and obtain and check the engine start information.

[0096] Through step S300, the state of the engine after normal ignition can be checked and judged, so that the correctness of the ignition cylinder at the correct ignition timing can be re-checked.

[0097] In some embodiments, based on obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining that it is at the correct ignition timing, S300, the step of normally igniting the ignition cylinder at the correct ignition timing, and obtaining and verifying the start-up information of the engine includes:

[0098] Normally ignite the ignition cylinder at the correct ignition timing;

[0099] Acquire engine startup information, the engine startup information including engine speed, a third temperature of an exhaust stroke of a first ignition cylinder, and a fourth temperature of an exhaust stroke of a second ignition cylinder;

[0100] comparing the third temperature with the fourth temperature, and comparing the engine speed with a normal speed range;

[0101] When the first ignition cylinder is at the correct ignition timing, the third temperature is greater than the fourth temperature, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions;

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

[0103] The correct ignition timing can be verified through the relationship between the third temperature and the fourth temperature, and the correctness of the correct ignition timing can be further demonstrated based on the engine speed being within the normal speed range.

[0104] When the first ignition cylinder is at the correct ignition timing, the third temperature is greater than the fourth temperature, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving condition. When the second ignition cylinder is at the correct ignition timing, the third temperature is less than the fourth temperature, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving condition.

[0105] In some embodiments, according to obtaining the ignition cylinder with the largest pressure in the exhaust stroke and determining that it is at the correct ignition timing, S300, normally ignites the ignition cylinder at the correct ignition timing, and obtains and verifies the start-up information of the engine, including:

[0106] Normally ignite the ignition cylinder at the correct ignition timing;

[0107] Acquire engine startup information, the engine startup information including engine speed, a third pressure of an exhaust stroke of a first ignition cylinder, and a fourth pressure of an exhaust stroke of a second ignition cylinder;

[0108] comparing the third pressure and the fourth pressure, and comparing the engine speed with a normal speed range;

[0109] When the first ignition cylinder is at the correct ignition timing, the third pressure is greater than the fourth pressure, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions;

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

[0111] The correct ignition timing can be verified through the relationship between the third pressure and the fourth pressure, and the correctness of the correct ignition timing can be further demonstrated based on the engine speed being within the normal speed range.

[0112] When the first ignition cylinder is at the correct ignition timing, the third pressure is greater than the fourth pressure, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions. When the second ignition cylinder is at the correct ignition timing, the third pressure is less than the fourth pressure, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions.

[0113] S400: According to the startup information not meeting the normal driving conditions, S100, S200 and S300 are repeated.

[0114] When the engine start information does not meet the normal driving conditions, it means that the ignition cylinder at the correct ignition timing is wrong, and S100, S200 and S300 are repeated to re-judge the ignition cylinder at the correct ignition timing until the engine start information meets the normal driving conditions.

[0115] S500: According to the startup information, the normal driving conditions are met, and the normal driving mode is entered.

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

[0117] The single crankshaft starting method of the embodiment of the present invention performs dual ignition in the single crankshaft starting mode, and determines the ignition cylinder at the correct ignition timing by the temperature or pressure of the ignition cylinder exhaust stroke. Ignite the ignition cylinder at the correct ignition timing, and check the engine information to verify the accuracy of the judgment of the correct ignition timing. If the engine start information does not meet the normal driving conditions, it means that the re-test has not passed, and repeat the above steps until the engine start information meets the normal driving conditions. If the engine start information meets the normal driving conditions, it means that the re-test has passed, the ignition timing is correct, the engine ignites normally, and normal driving can be carried out.

[0118] Furthermore, when the number of repetitions of S100, S200 and S300 exceeds a preset number, the startup is stopped to protect the vehicle.

[0119] In some embodiments, S100, performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining that it is at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining that it is at the correct ignition timing, includes:

[0120] Entering the dual ignition mode, the engine is dual-ignited and enters the limp home torque limiter mode;

[0121] 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;

[0122] Exit dual ignition mode;

[0123] According to the startup information, the steps of entering the normal driving mode include:

[0124] According to the engine start information, the normal driving conditions are met, and the limp home torque limiting mode is exited and the normal driving mode is entered.

[0125] The engine is dual-ignited by entering the dual-ignition mode and entering the limp-limit torque mode to protect the engine and reduce damage to the engine caused by abnormal ignition. The ignition cylinder is obtained at the correct ignition timing and the dual-ignition mode is exited to facilitate normal ignition.

[0126] When the engine start information meets the normal driving conditions, it means that the engine can ignite normally and can run normally, exit the limp home torque limit mode, and enter the normal driving mode to facilitate normal driving.

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

[0128] Acquire a camshaft signal and a crankshaft signal, and determine whether there are errors in the camshaft signal and the crankshaft signal;

[0129] According to the camshaft signal error and the crankshaft signal normal, the single crankshaft start mode is entered.

[0130] The engine start mode is determined by the camshaft signal and the crankshaft signal. It is understood that when there is no error in both the camshaft signal and the crankshaft signal, the engine starts normally. When there is an error in the camshaft signal and the crankshaft signal is normal, the engine can only start based on the crankshaft signal, thus entering the single crankshaft start mode.

[0131] Further, the vehicle sends an error signal based on the presence of an error in the camshaft signal.

[0132] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0133] Based on the same inventive concept, the embodiment of the present application also provides a single crankshaft starting device for implementing the single crankshaft starting method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more single crankshaft starting device embodiments provided below can refer to the limitations of the single crankshaft starting method above, and will not be repeated here.

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

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

[0136] An acquisition module, 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 to acquire the ignition cylinder at the correct ignition timing;

[0137] An ignition module is used to normally ignite the ignition cylinder at the correct ignition timing;

[0138] A detection module, used for obtaining and checking the start-up information of the engine;

[0139] The judgment module is used to repeat the steps of the above modules according to the startup information not meeting the normal driving conditions, and to enter the normal driving mode according to the startup information meeting the normal driving conditions.

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

[0141] Obtaining the ignition cylinder in the dual ignition process and recording it as the first ignition cylinder and the second ignition cylinder;

[0142] Acquire a first temperature of an exhaust stroke of a first ignition cylinder and a second temperature of an exhaust stroke of a second ignition cylinder;

[0143] The judgment module is also used to:

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

[0145] According to the first temperature being greater than the second temperature, determining that the first ignition cylinder is at a correct ignition timing;

[0146] According to the first temperature being less 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 Get module is also used to:

[0150] Acquire engine startup information, the engine startup information including engine speed, a third temperature of an exhaust stroke of a first ignition cylinder, and a fourth temperature of an exhaust stroke of a second cylinder;

[0151] The judgment module is also used to:

[0152] comparing the third temperature with the fourth temperature, and comparing the engine speed with a normal speed range;

[0153] When the first ignition cylinder is at the correct ignition timing, the third temperature is greater than the fourth temperature, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions;

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

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

[0156] Obtaining the ignition cylinder in the dual ignition process and recording it as the first ignition cylinder and the second ignition cylinder;

[0157] Acquire a first pressure of an exhaust stroke of a first ignition cylinder and a second pressure of an exhaust stroke of a second ignition cylinder;

[0158] The judgment module is also used to:

[0159] According to the first pressure being greater than the second pressure, determining that the first ignition cylinder is at a correct ignition timing;

[0160] According to the first pressure being 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 Get module is also used to:

[0164] Acquire engine startup information, the engine startup information including engine speed, a third pressure of an exhaust stroke of a first ignition cylinder, and a fourth pressure of an exhaust stroke of a second cylinder;

[0165] The judgment module is also used to:

[0166] comparing the third pressure and the fourth pressure, and comparing the engine speed with a normal speed range;

[0167] When the first ignition cylinder is at the correct ignition timing, the third pressure is greater than the fourth pressure, and the engine speed is within the normal speed range, and it is determined that the engine start information meets the normal driving conditions;

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

[0169] In some embodiments, the dual ignition module is also used to:

[0170] Entering the dual ignition mode, the engine is dual-ignited and enters the limp home torque limiter mode;

[0171] The Get module is also used to:

[0172] 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;

[0173] The dual ignition module is also used for:

[0174] Exit dual ignition mode.

[0175] The judgment module is also used to:

[0176] According to the engine start information, the normal driving conditions are met, and the limp home torque limiting mode is exited and the normal driving mode is entered.

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

[0178] Acquire a camshaft signal and a crankshaft signal, and determine whether there are errors in the camshaft signal and the crankshaft signal;

[0179] According to the camshaft signal error and the crankshaft signal normal, the single crankshaft start mode is entered.

[0180] An embodiment of the present invention further provides a vehicle.

[0181] The vehicle of the embodiment of the present invention includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of the single crankshaft starting method of the above embodiment are implemented.

[0182] The vehicle of the embodiment of the present invention performs dual ignition in the single crankshaft start mode, and determines the ignition cylinder at the correct ignition timing by the temperature or pressure of the ignition cylinder exhaust stroke. The ignition cylinder at the correct ignition timing is ignited, and the engine information is checked to re-check the accuracy of the judgment of the correct ignition timing. If the re-check is passed, it means that the engine is ignited normally, and thus, normal driving can be performed.

[0183] Furthermore, the vehicle includes a computer device, which includes a processor, a memory, an input / output interface (I / O for short) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, the single crankshaft starting method described above is implemented.

[0184] An embodiment of the present invention further provides a computer storage medium.

[0185] The computer storage medium of the embodiment of the present invention stores computer-readable instructions on the computer storage medium. When the computer-readable instructions are read by one or more processors, the one or more processors execute the steps of the single crankshaft starting method of the above embodiment.

[0186] The computer storage medium of the embodiment of the present invention, when the computer readable instructions are read by one or more processors, enables the one or more processors to execute dual ignition in the single crankshaft starting mode, and judge the ignition cylinder at the correct ignition timing by the temperature or pressure of the exhaust stroke of the ignition cylinder, ignite the ignition cylinder at the correct ignition timing, and check the engine information to verify the accuracy of the judgment of the correct ignition timing. When the re-verification is passed, it means that the engine is ignited normally, thereby enabling normal driving.

[0187] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable storage medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, apparatus, or device and execute instructions), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, a "computer-readable storage medium" may be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples of computer-readable storage media (a non-exhaustive list) include the following: an electrical connection with one or more wirings (electronic devices), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory, or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM, Compact Disc Read-Only Memory). In addition, the computer-readable storage medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0188] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA, Programmable Gate Array), a field programmable gate array (FPGA, Field Programmable Gate Array), etc.

[0189] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A single crankshaft starting method, characterized in that: include: Performing dual ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining it to be at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining it to be at the correct ignition timing; Get the ignition cylinder at the correct ignition timing; Normally igniting the ignition cylinder at the correct ignition timing, and acquiring and verifying the start-up information of the engine; According to the startup information not meeting the normal driving conditions, repeat the above steps; According to the startup information, the normal driving conditions are met and the normal driving mode is entered.

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 that it is at the correct ignition timing comprises: Obtaining the ignition cylinder in the dual ignition process and recording it as a first ignition cylinder and a second ignition cylinder; Acquire a first temperature of an exhaust stroke of a first ignition cylinder and a second temperature of an exhaust stroke of a second ignition cylinder; comparing the first temperature and the second temperature; According to the first temperature being greater than the second temperature, determining that the first ignition cylinder is at the correct ignition timing; According to the first temperature being 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: According to obtaining the ignition cylinder with the highest temperature during the exhaust stroke and determining that it is at the correct ignition timing, the step of normally igniting the ignition cylinder at the correct ignition timing and obtaining and verifying the start-up information of the engine comprises: Normally igniting the ignition cylinder at the correct ignition timing; Acquiring startup information of the engine, the startup information of the engine including a rotation speed of the engine, a third temperature of an exhaust stroke of the first ignition cylinder, and a fourth temperature of an exhaust stroke of the second ignition cylinder; comparing the third temperature with the fourth temperature, and comparing the speed of the engine with a normal speed range; When the first ignition cylinder is at the correct ignition timing, according to the third temperature being greater than the fourth temperature and according to the engine speed being within the normal speed range, it is determined that the engine start information meets the normal driving conditions; When the second ignition cylinder is at the correct ignition timing, based on the third temperature being lower than the fourth temperature and based on the engine speed being within the normal speed range, it is determined that the engine start information meets 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 largest pressure in the exhaust stroke and determining that it is at the correct ignition timing includes: Obtaining the ignition cylinder in the dual ignition process and recording it as a first ignition cylinder and a second ignition cylinder; Acquiring a first pressure of an exhaust stroke of the first ignition cylinder and a second pressure of an exhaust stroke of the second ignition cylinder; According to the first pressure being greater than the second pressure, determining that the first ignition cylinder is at the correct ignition timing; According to the first pressure being 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: According to obtaining the ignition cylinder with the largest pressure in the exhaust stroke and determining that it is at the correct ignition timing, the ignition cylinder at the correct ignition timing is normally ignited to obtain and verify the start-up information of the engine, including: Normally igniting the ignition cylinder at the correct ignition timing; Acquiring the startup information of the engine, the startup information of the engine including the rotation speed of the engine, 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; comparing the third pressure with the fourth pressure, and comparing the speed of the engine with a normal speed range; When the first ignition cylinder is at the correct ignition timing, according to the third pressure being greater than the fourth pressure and according to the engine speed being within the normal speed range, it is determined that the engine start information meets the normal driving conditions; When the second ignition cylinder is at the correct ignition timing, based on the third pressure being less than the fourth pressure and based on the engine speed being within the normal speed range, it is determined that the engine start information meets 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 double ignition on the engine, obtaining the ignition cylinder with the highest temperature in the exhaust stroke, and determining it to be at the correct ignition timing, or obtaining the ignition cylinder with the highest pressure in the exhaust stroke, and determining it to be at the correct ignition timing, comprises: Entering a dual ignition mode to dual-ignite the engine and entering a limp home torque limiting mode; 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; exiting the dual ignition mode; The step of entering the normal driving mode according to the startup information meeting the normal driving conditions comprises: According to the engine startup information meeting the normal driving conditions, the limp home torque limiting mode is exited and the normal driving mode is entered.

7. The single crankshaft starting method according to any one of claims 1 to 5, characterized in that: The engine is double-ignited, the ignition cylinder with the highest temperature in the exhaust stroke is obtained, and it is determined to be at the correct ignition timing, or the ignition cylinder with the highest pressure in the exhaust stroke is obtained, and it is determined to be before the correct ignition timing. The single crankshaft starting method also includes: Acquire a camshaft signal and a crankshaft signal, and determine whether there is an error in the camshaft signal and the crankshaft signal; According to the camshaft signal having an error and the crankshaft signal being normal, the single crankshaft starting mode is entered.

8. A single crankshaft starting device, characterized in that: Used to implement the single crankshaft starting method according to any one of claims 1 to 7, the single crankshaft starting device comprises: Dual ignition module, used for dual ignition of the engine; an acquisition module, 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 to acquire the ignition cylinder at the correct ignition timing; An ignition module, used for normally igniting the ignition cylinder at the correct ignition timing; A detection module, used for acquiring and checking the startup information of the engine; The judgment module is used to repeat the steps of the above modules according to the startup information not meeting the normal driving conditions, and to enter the normal driving mode according to the startup information meeting the normal driving conditions.

9. A vehicle, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the single crankshaft starting method according to any one of claims 1 to 7 when executing the computer program.

10. A computer storage medium, characterized in that: Computer readable instructions are stored on the computer storage medium. When the computer readable instructions are read by one or more processors, the one or more processors execute the steps of the single crankshaft starting method according to any one of claims 1 to 7.

Images