Method, device and electronic equipment for selecting firing sequence of multi-cylinder engine

Abstract

The present invention provides a method, device and electronic equipment for selecting a firing order of a multi-cylinder engine, and relates to the technical field of multi-cylinder engines. The method comprises: selecting a plurality of candidate reference firing orders from a plurality of reference firing orders of a multi-cylinder engine; for each candidate reference firing order, using a correction coefficient of each cylinder in the candidate reference firing order to determine the total degree of firing interference corresponding to the candidate reference firing order; comparing the order of a first queue of a plurality of candidate reference firing orders determined by the total degree of firing interference with a second queue determined by the performance of the multi-cylinder engine, using the same correction coefficients to determine the total degree of firing interference corresponding to all reference firing orders, and selecting a reference firing order as the firing order of the multi-cylinder engine according to the magnitude of the total degree of firing interference. The embodiment of the present invention can select a reference firing order by calculating the total degree of firing interference of a plurality of reference firing orders, thereby improving the selection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-cylinder engines, and in particular to a method, a device and an electronic device for selecting an ignition sequence of a multi-cylinder engine. Background Art

[0002] At present, for a multi-cylinder engine, the firing order can theoretically be determined by simulating the performance of the multi-cylinder engine with each theoretically possible firing order, thereby selecting the firing order with the best multi-cylinder engine performance based on the performance of the multi-cylinder engine with multiple firing orders. However, the calculation process of simulating the performance of the multi-cylinder engine is relatively cumbersome and time-consuming. In this way, the firing order is generally determined based on the experience of the staff, which results in poor performance of the multi-cylinder engine with a certain firing order. Summary of the invention

[0003] The present invention provides a method, device and electronic equipment for selecting the ignition sequence of a multi-cylinder engine, which can determine the degree of the total degree of calculated ignition interference representing the performance of the multi-cylinder engine, so that a reference ignition sequence can be selected by calculating the total degree of ignition interference of multiple reference ignition sequences, thereby improving the selection accuracy.

[0004] In a first aspect, an embodiment of the present invention provides a method for selecting a firing order of a multi-cylinder engine, comprising:

[0005] Selecting a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine; wherein the number of the candidate reference firing sequences is less than the number of the reference firing sequences;

[0006] For each candidate reference firing sequence, a correction coefficient is used to correct the firing interference degree of each cylinder in the candidate reference firing sequence; and the sum of the corrected firing interference degrees of each cylinder in the candidate reference firing sequence is used as the total firing interference degree corresponding to the candidate reference firing sequence; wherein the firing interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder;

[0007] If the ranking of a first queue of multiple candidate reference firing orders determined according to the total degree of firing interference corresponding to the multiple candidate reference firing orders is different from the ranking of a second queue of multiple candidate reference firing orders determined according to the multiple multi-cylinder engine performances simulated by the multiple candidate reference firing orders, modifying the correction coefficient until the ranking of the first queue is the same as the ranking of the second queue;

[0008] According to the correction coefficient when the first queue is the same as the second queue, the total degree of ignition interference corresponding to all reference ignition sequences is determined, and according to the size of the total degree of ignition interference corresponding to all reference ignition sequences, a reference ignition sequence is selected as the ignition sequence of the multi-cylinder engine.

[0009] The above method selects multiple candidate reference ignition sequences as samples from multiple reference ignition sequences, and for each candidate reference ignition sequence, uses a correction coefficient to determine the total degree of ignition interference corresponding to the candidate reference ignition sequence. When the order of a first queue of multiple candidate reference ignition sequences determined by the total degree of ignition interference is different from the order of a second queue of multiple candidate reference ignition sequences determined by the performance of a multi-cylinder engine, the correction coefficient of each cylinder is corrected until the order of the first queue is the same as that of the second queue. In this way, the total degree of ignition interference corresponding to the multiple reference ignition sequences calculated by the correction coefficient can represent the multi-cylinder engine performance corresponding to the multiple reference ignition sequences, select the ignition sequence of the multi-cylinder engine, and improve the selection accuracy.

[0010] In a possible implementation, the correction factor includes a firing interval correction factor and an upstream and downstream asymmetric interference correction factor;

[0011] The correction factor is determined by:

[0012] Selecting a preset ignition interval correction coefficient from a preset ignition interval correction coefficient value range as the ignition interval correction coefficient;

[0013] Selecting a plurality of preset upstream and downstream asymmetric interference correction coefficients in a preset upstream and downstream asymmetric interference correction coefficient value range;

[0014] The upstream and downstream asymmetric interference correction coefficients are determined according to the selected multiple preset upstream and downstream asymmetric interference correction coefficients.

[0015] The above method determines the correction coefficient through the ignition interval and the upstream and downstream asymmetric interference conditions, and corrects the interference degree between the cylinder and the target cylinder corresponding to the cylinder, so that the total ignition interference degree corresponding to the calculated candidate reference ignition sequence is more accurate.

[0016] In a possible implementation, multiple preset upstream and downstream asymmetric interference correction coefficients are selected from a preset upstream and downstream asymmetric interference correction coefficient value range, including:

[0017] selecting a target reference firing order from a plurality of candidate reference firing orders, and selecting a reference cylinder from the target reference firing order;

[0018] For each target cylinder corresponding to the reference cylinder, if the reference cylinder is closer to the turbine than the target cylinder, a preset first upstream and downstream asymmetric interference correction coefficient is selected within a preset first upstream and downstream asymmetric interference correction coefficient value range;

[0019] If the reference cylinder is farther from the turbine than the target cylinder, a preset second upstream and downstream asymmetric interference correction coefficient is selected within the preset second upstream and downstream asymmetric interference correction coefficient value range.

[0020] The above method determines different upstream and downstream asymmetric interference correction coefficients by comparing the distances between the cylinder and the target cylinder from the turbine and determining the different interference degrees, thereby improving the accuracy of the upstream and downstream asymmetric interference correction coefficients of the cylinder.

[0021] In a possible implementation, the positional relationship between the cylinder and the plurality of target cylinders corresponding to the cylinder includes: the number of firing intervals between the cylinder and the plurality of target cylinders corresponding to the cylinder;

[0022] The degree of ignition interference of each cylinder in the candidate reference ignition order is determined by:

[0023] For each cylinder in the candidate reference firing sequence, the product of the sum of the firing intervals between the cylinder and a plurality of target cylinders corresponding to the cylinder and the distance between two adjacent cylinders is used as the firing interference degree of the cylinder.

[0024] The above method can use the distance between the cylinder and the target cylinder corresponding to the cylinder as the ignition interference degree of the cylinder, so that the ignition interference degree can be digitized.

[0025] In a possible implementation, a plurality of candidate reference firing orders are selected from a plurality of reference firing orders of a plurality of cylinders of a multi-cylinder engine, including:

[0026] determining a total degree of ignition interference corresponding to the plurality of reference ignition sequences according to a correction coefficient for each cylinder in the plurality of reference ignition sequences;

[0027] Determining a third queue of the plurality of reference firing sequences according to the total degree of firing interference corresponding to the plurality of reference firing sequences;

[0028] Dividing a plurality of reference firing sequences into a first upper segment set and a second upper segment set from the middle of the third queue;

[0029] Selecting a first preset number of reference firing sequences from the first upper segment set as candidate reference firing sequences; and

[0030] A second preset number of reference firing sequences are selected from the second upper segment set as candidate reference firing sequences; wherein the factor average value is an average value of total degrees of firing interference corresponding to the plurality of reference firing sequences.

[0031] The above method can select a first preset number of reference ignition sequences for the upper segment and a second preset number of reference ignition sequences for the lower segment as candidate reference ignition sequences. In this way, different reference ignition sequences for the upper segment and the lower segment are selected as samples, so that the sample quality ratio is averaged, which can not only reduce the calculation cost, but also alleviate the situation where the correction coefficient determined due to the reduction of samples cannot well represent the performance of the multi-cylinder engine.

[0032] In a possible implementation, the target cylinder corresponding to the cylinder is determined by:

[0033] According to the wrap angle of the multi-cylinder engine, determining the number of upstream cylinders that interfere with the intake of the cylinders and the number of downstream cylinders that interfere with the exhaust of the cylinders;

[0034] The target cylinder corresponding to the cylinder is determined according to the reference firing order, the number of upstream cylinders interfering with the intake of the cylinder, and the number of downstream cylinders interfering with the exhaust of the cylinder.

[0035] The above method can determine the target cylinder corresponding to the cylinder by using the wrap angle and the reference firing sequence, thereby achieving the determination of the firing interference degree of the cylinder.

[0036] In one possible implementation, determining a second queue of multiple candidate reference firing orders based on multiple multi-cylinder engine performances simulated from multiple candidate reference firing orders includes:

[0037] Simulating a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing sequence according to each candidate reference firing sequence;

[0038] Determining, according to a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing order, an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order;

[0039] According to the size of the evaluation index corresponding to each candidate reference firing sequence, multiple candidate reference firing sequences are sorted to obtain a second queue.

[0040] In the above method, since there are many simulated multi-cylinder engine performance indicators, and multiple indicators cannot sort the candidate reference ignition sequences, the present invention proposes to determine the evaluation indicators for evaluating the multi-cylinder engine performance indicators based on the performance of multiple multi-cylinder engines, thereby realizing the determination of the second queue based on the multi-cylinder engine performance.

[0041] In a possible implementation, based on a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing order, determining an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order includes:

[0042] For each candidate reference firing order, selecting a multi-cylinder engine performance indicator as the evaluation indicator from a plurality of multi-cylinder engine performance indicators corresponding to the candidate reference firing order; or

[0043] The sum of the multiple multi-cylinder engine performance indicators corresponding to the candidate reference ignition order is used as the evaluation indicator.

[0044] The above method can select one from a plurality of multi-cylinder engine performance indicators as an evaluation indicator or use the sum of a plurality of multi-cylinder engine performance indicators as an evaluation indicator, so that a numerical value can be used to represent the evaluation indicator, thereby realizing the determination of the second queue based on the multi-cylinder engine performance.

[0045] In a second aspect, an embodiment of the present invention provides a device for selecting a firing order of a multi-cylinder engine, comprising:

[0046] A first selection module is used to select a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine; wherein the number of the candidate reference firing sequences is less than the number of the reference firing sequences;

[0047] An interference determination module is used to correct the ignition interference degree of each cylinder in each candidate reference ignition sequence by using a correction coefficient; and the sum of the corrected ignition interference degrees of each cylinder in the candidate reference ignition sequence is used as the total ignition interference degree corresponding to the candidate reference ignition sequence; wherein the ignition interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder;

[0048] an adjusting module, configured to modify the correction coefficient until the first queue and the second queue are in the same order if the order of a first queue of multiple candidate reference firing orders determined according to the total degree of firing interference corresponding to the multiple candidate reference firing orders is different from the order of a second queue of multiple candidate reference firing orders determined according to the performance of multiple multi-cylinder engines simulated by the multiple candidate reference firing orders;

[0049] The second selection module is used to determine the total degree of ignition interference corresponding to all reference ignition sequences based on the correction coefficient when the first queue is the same as the second queue, and select a reference ignition sequence as the ignition sequence of the multi-cylinder engine based on the size of the total degree of ignition interference corresponding to all reference ignition sequences.

[0050] In a third aspect, an embodiment of the present invention provides an electronic device, including:

[0051] processor;

[0052] a memory for storing instructions executable by the processor;

[0053] Wherein, the processor is configured to execute the instructions to implement the method for selecting a firing order of a multi-cylinder engine as described in any one of the first aspects.

[0054] In a fourth aspect, an embodiment of the present invention provides a storage medium, which, when instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to execute a method for selecting a firing order of a multi-cylinder engine as described in any one of the first aspects.

[0055] In addition, the technical effects brought about by any implementation method in the second to fourth aspects can refer to the technical effects brought about by different implementation methods in the first aspect, and will not be repeated here.

[0056] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A flow chart of a method for selecting a firing order for a multi-cylinder engine provided by an embodiment of the present invention;

[0058] Figure 2 A schematic diagram of an eight-cylinder multi-cylinder engine provided by an embodiment of the present invention;

[0059] Figure 3 A flow chart of another method for selecting a firing order for a multi-cylinder engine provided by an embodiment of the present invention;

[0060] Figure 4 A structural diagram of a multi-cylinder engine firing sequence selection device provided by an embodiment of the present invention;

[0061] Figure 5 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] At present, for a multi-cylinder engine, the firing order can theoretically be determined by simulating the multi-cylinder engine performance of each theoretically possible firing order and selecting the firing order with the best multi-cylinder engine performance. However, the calculation process of simulating the multi-cylinder engine performance is relatively cumbersome and time-consuming. In this way, the firing order is generally determined based on the experience of the staff, which results in poor performance of the multi-cylinder engine with a certain firing order.

[0064] Based on this, the present invention proposes a method to find a calculation method for calculating the total degree of ignition interference to represent the performance of a multi-cylinder engine. In this way, the total degree of ignition interference corresponding to a plurality of reference ignition sequences is calculated by this calculation method, thereby selecting the ignition sequence of the multi-cylinder engine, thereby improving the accuracy of the selection.

[0065] The following is a detailed description with reference to the accompanying drawings:

[0066] Combination Figure 1 As shown, an embodiment of the present invention provides a method for selecting a firing order of a multi-cylinder engine, comprising:

[0067] S100: Selecting a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine;

[0068] Among them, the number of candidate reference firing sequences is less than the number of reference firing sequences.

[0069] The firing sequence refers to the firing sequence of multiple cylinders of a multi-cylinder engine. Figure 2 As shown, taking eight cylinders as an example, the firing order is cylinder 1, cylinder 2, cylinder 3, cylinder 4, cylinder 5, cylinder 6, cylinder 7, and cylinder 8.

[0070] S101: for each candidate reference firing sequence, using a correction coefficient to correct the firing interference degree of each cylinder in the candidate reference firing sequence; and taking the sum of the corrected firing interference degrees of each cylinder in the candidate reference firing sequence as the total firing interference degree corresponding to the candidate reference firing sequence;

[0071] The ignition interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder;

[0072] S102: if the first queue of multiple candidate reference firing sequences determined according to the total degree of firing interference corresponding to the multiple candidate reference firing sequences is not the same as the second queue of multiple candidate reference firing sequences determined according to the multiple multi-cylinder engine performances simulated by the multiple candidate reference firing sequences, modifying the correction coefficient until the first queue is the same as the second queue;

[0073] For example, when multiple candidate reference firing sequences are firing sequence a, firing sequence b, firing sequence c, firing sequence d, firing sequence e, firing sequence f, and firing sequence g.

[0074] Calculate the total degree of ignition interference corresponding to firing sequence a, the total degree of ignition interference corresponding to firing sequence b, the total degree of ignition interference corresponding to firing sequence c, the total degree of ignition interference corresponding to firing sequence d, the total degree of ignition interference corresponding to firing sequence e, the total degree of ignition interference corresponding to firing sequence f, and the total degree of ignition interference corresponding to firing sequence g, and determine the first queue according to the size of the total degree of ignition interference, for example, firing sequence a, firing sequence b, firing sequence d, firing sequence e, firing sequence c, firing sequence f, and firing sequence g.

[0075] According to firing sequence a, the multi-cylinder engine performance corresponding to firing sequence a is simulated; according to firing sequence b, the multi-cylinder engine performance corresponding to firing sequence b is simulated; according to firing sequence c, the multi-cylinder engine performance corresponding to firing sequence c is simulated; according to firing sequence d, the multi-cylinder engine performance corresponding to firing sequence d is simulated; according to firing sequence e, the multi-cylinder engine performance corresponding to firing sequence e is simulated; according to firing sequence f, the multi-cylinder engine performance corresponding to firing sequence f is simulated; according to firing sequence g, the multi-cylinder engine performance corresponding to firing sequence g is simulated. According to the size of the multi-cylinder engine performance corresponding to the above firing sequences, the second queue is determined.

[0076] For the queue, since the smaller the interference, the better the performance of the multi-cylinder engine, the candidate reference firing order is sorted according to the order of interference from large to small, and the first queue is obtained; that is, the first in the queue has the largest interference, and the last in the queue has the smallest interference. According to the order of increasingly better performance of the multi-cylinder engine, the candidate reference firing order is sorted to obtain the second queue, that is, the first in the queue has the worst performance of the multi-cylinder engine, and the last in the queue has the best performance of the multi-cylinder engine.

[0077] S103: Determine the total degree of ignition interference corresponding to all reference ignition sequences based on the correction coefficient when the first queue and the second queue are the same, and select a reference ignition sequence as the ignition sequence of the multi-cylinder engine based on the total degree of ignition interference corresponding to all reference ignition sequences.

[0078] When selecting a reference ignition sequence, the reference ignition sequence with the smallest total degree of ignition interference may be selected as the ignition sequence of the multi-cylinder engine.

[0079] Among them, the order of the first queue and the second queue is the same, which means that the total degree of ignition interference calculated by the correction coefficient can represent the performance of the multi-cylinder engine. In this way, all reference ignition sequences can be calculated with the correction coefficient, which is equivalent to simulating the performance of the multi-cylinder engine with all reference ignition sequences. In this way, when the total degree of ignition interference is the smallest, that is, the ignition sequence with the best multi-cylinder engine performance is selected, the accuracy of the selection is improved.

[0080] If the order of the two queues is ignition sequence a, ignition sequence b, ignition sequence d, ignition sequence e, ignition sequence c, ignition sequence f, and ignition sequence g, then there is no need to modify the correction coefficient. The correction coefficient is used to determine the total degree of ignition interference corresponding to all reference ignition sequences, and thus the ignition sequence of the multi-cylinder engine is selected based on the size.

[0081] Exemplarily, the target cylinder corresponding to the cylinder is determined in the following manner:

[0082] According to the wrap angle of the multi-cylinder engine, the number of upstream cylinders for interfering with the intake of the cylinder and the number of downstream cylinders for interfering with the exhaust of the cylinder are determined;

[0083] The target cylinder corresponding to the cylinder is determined according to the reference firing sequence, the upstream cylinder number of the intake of the interfering cylinder, and the downstream cylinder number of the exhaust of the interfering cylinder.

[0084] The upstream cylinder number is the number of cylinders that fire in front of the cylinder in the firing sequence, and the downstream cylinder number is the number of cylinders that fire in the back of the cylinder in the firing sequence.

[0085] In detail, according to the correspondence between the wrap angle and the number of cylinders of the multi-cylinder engine, the wrap angle of the current multi-cylinder engine, the corresponding upstream cylinder number of the intake of the interference cylinder, and the downstream cylinder number of the exhaust of the interference cylinder are determined.

[0086] For example, if the wrap angle of a multi-cylinder engine is 270 degrees, the corresponding upstream cylinder number of the interference cylinder intake is 3, and the downstream cylinder number of the interference cylinder exhaust is 3. If the wrap angle of a multi-cylinder engine is 120 degrees, the corresponding upstream cylinder number of the interference cylinder intake is 2, and the downstream cylinder number of the interference cylinder exhaust is 2.

[0087] Combination Figure 2As shown in the figure, when the wrap angle of the multi-cylinder engine is 270 degrees, the number of upstream cylinders for interfering with the intake of the cylinder is 3, and the number of downstream cylinders for interfering with the exhaust of the cylinder is 3. With the firing order of 1-5-2-3-8-4-7-6-1, the target cylinders corresponding to cylinder 1 are cylinder 4, cylinder 7, cylinder 6, cylinder 5, cylinder 2, and cylinder 3. The target cylinders corresponding to cylinder 2 are cylinder 6, cylinder 1, cylinder 5, cylinder 3, cylinder 8, and cylinder 4.

[0088] Among them, the correction coefficient includes the ignition interval correction coefficient, which is expressed by α, and the upstream and downstream asymmetric interference correction coefficient, which is expressed by γ;

[0089] The correction factor is determined by:

[0090] Selecting a preset ignition interval correction coefficient from a preset ignition interval correction coefficient value range as the ignition interval correction coefficient;

[0091] Selecting a plurality of preset upstream and downstream asymmetric interference correction coefficients in a preset upstream and downstream asymmetric interference correction coefficient value range;

[0092] The upstream and downstream asymmetric interference correction coefficients are determined according to the selected multiple preset upstream and downstream asymmetric interference correction coefficients.

[0093] Among them, in the preset upstream and downstream asymmetric interference correction coefficient value range, multiple preset upstream and downstream asymmetric interference correction coefficients are selected, including:

[0094] selecting a target reference firing order from a plurality of candidate reference firing orders, and selecting a reference cylinder from the target reference firing order;

[0095] For each target cylinder corresponding to the reference cylinder, if the reference cylinder is closer to the turbine than the target cylinder, a preset first upstream and downstream asymmetric interference correction coefficient is selected within a preset first upstream and downstream asymmetric interference correction coefficient value range;

[0096] If the reference cylinder is farther from the turbine than the target cylinder, a preset second upstream and downstream asymmetric interference correction coefficient is selected within the preset second upstream and downstream asymmetric interference correction coefficient value range.

[0097] Among them, a target reference firing sequence is selected from multiple candidate reference firing sequences, and the selection can be randomly selected. At the same time, a reference cylinder is selected from the target reference firing sequence, which is also randomly selected. The reference cylinder is used to determine multiple preset upstream and downstream asymmetric interference correction coefficients.

[0098] Wherein, the positional relationship between the cylinder and the multiple target cylinders corresponding to the cylinder includes: the number of firing intervals between the cylinder and the multiple target cylinders corresponding to the cylinder;

[0099] The degree of ignition interference of each cylinder in the candidate reference ignition order is determined by:

[0100] For each cylinder in the candidate reference firing sequence, the product of the sum of the firing intervals between the cylinder and a plurality of target cylinders corresponding to the cylinder and the distance between two adjacent cylinders is used as the firing interference degree of the cylinder.

[0101] The target cylinders corresponding to cylinder 1 are cylinder 4, cylinder 7, cylinder 6, cylinder 5, cylinder 2, and cylinder 3. The ignition interval number between cylinder 1 and cylinder 4 is 3, the ignition interval number between cylinder 1 and cylinder 7 is 6, the ignition interval number between cylinder 1 and cylinder 6 is 5, the ignition interval number between cylinder 1 and cylinder 5 is 4, the ignition interval number between cylinder 1 and cylinder 2 is 1, and the ignition interval number between cylinder 1 and cylinder 3 is 2.

[0102] The second value for cylinder 1 is calculated as 3+6+5+4+1+2, which equals 21.

[0103] The distance between two adjacent cylinders is λ, so the distance between cylinder 1 and cylinder 4 is 3λ, the distance between cylinder 1 and cylinder 7 is 6λ, the distance between cylinder 1 and cylinder 6 is 5λ, the distance between cylinder 1 and cylinder 5 is 4λ, the distance between cylinder 1 and cylinder 2 is 1λ, and the distance between cylinder 1 and cylinder 3 is 2λ.

[0104] The first value calculated for cylinder 1 is then 3λ+6λ+5λ+4λ+1λ+2λ.

[0105] The ignition interference degree of cylinder 1 is Ω1 = [α 1i *γ 1j (3+6+5+4+1+2)λ]

[0106] When the preset firing interval correction coefficient value range is: 0.1<α<0.8, then a value of 0.2 can be randomly selected as the firing interval correction coefficient for this calculation.

[0107] The preset value range of the first upstream and downstream asymmetric interference correction coefficient is: 0.1<γ<0.5; the preset value range of the second upstream and downstream asymmetric interference correction coefficient is: 0.3<γ<0.7;

[0108] Combination Figure 2 As shown, taking cylinder 1 as the reference cylinder, when calculating the ignition interference degree of cylinder 1, cylinder 1 is farther from the turbine than cylinder 4, cylinder 7, cylinder 6, cylinder 5, cylinder 2, and cylinder 3, so it is necessary to select 0.3<γ<0.7, and then the preset upstream and downstream asymmetric interference correction coefficient corresponding to each target cylinder is 0.31, 0.32, 0.33, 0.4, 0.42, and 0.5.

[0109] Determining the upstream and downstream asymmetric interference correction coefficient of the cylinder according to the selected multiple preset upstream and downstream asymmetric interference correction coefficients specifically includes: determining the upstream and downstream asymmetric interference correction coefficient of the cylinder by summing the selected multiple preset upstream and downstream asymmetric interference correction coefficients.

[0110] For example, the sum of 0.31, 0.32, 0.33, 0.4, 0.42, and 0.5 is 2.28, which is the upstream and downstream asymmetric interference correction coefficient γ of cylinder 1.

[0111] Then the ignition interference degree of cylinder 1 is Ω1 = [α 1i *γ 1j (3+6+5+4+1+2)λ]=0.2*2.28*21*λ.

[0112] By analogy, with α=0.2 and γ=2.28, the ignition interference degree of cylinder 2 is calculated as Ω2, the ignition interference degree of cylinder 3 is Ω3, the ignition interference degree of cylinder 4 is Ω4, the ignition interference degree of cylinder 5 is Ω5, the ignition interference degree of cylinder 6 is Ω6, the ignition interference degree of cylinder 7 is Ω7, and the ignition interference degree of cylinder 8 is Ω8.

[0113] Then, taking the firing sequence of 1-5-2-3-8-4-7-6-1 as an example, the total firing interference degree Ω corresponding to this firing sequence total for:

[0114]

[0115] Where i is the cylinder number and n is the total number of cylinders. It is Ω1+Ω2+Ω3+Ω4+Ω5+Ω6+Ω7+Ω8.

[0116] The selecting of a plurality of candidate reference firing sequences specifically includes: randomly selecting a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a plurality of cylinders of a multi-cylinder engine.

[0117] Selecting the plurality of candidate reference firing orders may further include: determining a total degree of firing interference corresponding to the plurality of reference firing orders based on a correction coefficient for each cylinder in the plurality of reference firing orders;

[0118] Determining a third queue of the plurality of reference firing sequences according to the total degree of firing interference corresponding to the plurality of reference firing sequences;

[0119] Dividing the plurality of reference firing sequences into a first upper segment set and a second upper segment set from the middle of the third queue;

[0120] Selecting a first preset number of reference firing sequences from the first upper segment set as candidate reference firing sequences; and

[0121] A second preset number of reference firing sequences are selected from the second upper segment set as candidate reference firing sequences.

[0122] In detail, based on the above-mentioned correction coefficient, the total degree of ignition interference corresponding to multiple reference ignition sequences is determined, so that the multiple reference ignition sequences can be sorted to obtain a third queue, and the multiple reference ignition sequences are divided into upper segments and lower segments, so that 5 to 7 reference ignition sequences can be randomly selected from the upper segment set, and 5 to 7 reference ignition sequences can be randomly selected from the lower segment set.

[0123] The first preset number and the second preset number may be the same or different, and may be set by the user.

[0124] The second queue of multiple candidate reference firing orders is determined based on multiple multi-cylinder engine performances simulated from multiple candidate reference firing orders, including:

[0125] Simulating a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing sequence according to each candidate reference firing sequence;

[0126] Determining, according to a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing order, an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order;

[0127] According to the size of the evaluation index corresponding to each candidate reference firing sequence, multiple candidate reference firing sequences are sorted to obtain a second queue.

[0128] Obtaining the evaluation index includes: for each candidate reference firing order, selecting a multi-cylinder engine performance index as the evaluation index from a plurality of multi-cylinder engine performance indexes corresponding to the candidate reference firing order; or

[0129] The sum of multiple multi-cylinder engine performance indicators corresponding to the candidate reference ignition order is used as the evaluation indicator.

[0130] The evaluation index may be a fuel consumption rate, and a plurality of candidate reference firing sequences are sorted according to the fuel consumption rate to obtain a second queue.

[0131] Combination Figure 3 As shown, an embodiment of the present invention provides an overall method for selecting a firing order of a multi-cylinder engine, comprising:

[0132] S300: determining multiple reference firing sequences of a multi-cylinder engine;

[0133] S301: for each reference firing sequence, determining a firing interval correction coefficient and an upstream and downstream asymmetric interference correction coefficient;

[0134] S302: for each reference firing sequence, correcting the firing interference degree of each cylinder according to the firing interval correction coefficient and the upstream and downstream asymmetric interference correction coefficient;

[0135] S303: determining a total ignition interference degree corresponding to each reference ignition sequence according to the ignition interference degree of each cylinder in each reference ignition sequence;

[0136] S304: dividing the plurality of reference firing sequences into an upper segment set and a lower segment set according to the total degree of firing interference corresponding to the plurality of reference firing sequences;

[0137] S305: Selecting a first preset number of reference firing sequences from the first upper segment set as candidate reference firing sequences; and selecting a second preset number of reference firing sequences from the second upper segment set as candidate reference firing sequences;

[0138] S306: determining a first queue of multiple candidate reference firing sequences according to the total degree of firing interference corresponding to the multiple candidate reference firing sequences; simulating fuel consumption rates according to the multiple candidate reference firing sequences, and determining a second queue of multiple candidate reference firing sequences according to the magnitude of the fuel consumption rates corresponding to the multiple candidate reference firing sequences;

[0139] S307: Determine whether the order in the first queue and the second queue is the same; if yes, execute S308; otherwise execute S301; that is, adjust the firing interval correction coefficient and the upstream and downstream asymmetric interference correction coefficient of each cylinder in the reference firing sequence again.

[0140] S308: Determine the total degree of ignition interference corresponding to all reference ignition sequences based on the correction coefficient when the first queue and the second queue are the same, and select a reference ignition sequence as the ignition sequence of the multi-cylinder engine based on the size of the total degree of ignition interference corresponding to all reference ignition sequences.

[0141] like Figure 4 As shown, the present invention also provides a multi-cylinder engine ignition sequence selection device, comprising:

[0142] A first selection module 400 is used to select a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine; wherein the number of the candidate reference firing sequences is less than the number of the reference firing sequences;

[0143] The interference determination module 401 is used to correct the ignition interference degree of each cylinder in each candidate reference ignition sequence by using a correction coefficient; and the sum of the corrected ignition interference degrees of each cylinder in the candidate reference ignition sequence is used as the total ignition interference degree corresponding to the candidate reference ignition sequence; wherein the ignition interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder;

[0144] The adjusting module 402 is configured to modify the correction coefficient until the first queue and the second queue are in the same order if the order of the first queue of multiple candidate reference firing orders determined according to the total degree of firing interference corresponding to the multiple candidate reference firing orders is different from the order of the second queue of multiple candidate reference firing orders determined according to the multiple multi-cylinder engine performances simulated by the multiple candidate reference firing orders;

[0145] The second selection module 403 is used to determine the total degree of ignition interference corresponding to all reference ignition sequences based on the correction coefficient when the first queue is the same as the second queue, and select a reference ignition sequence as the ignition sequence of the multi-cylinder engine based on the size of the total degree of ignition interference corresponding to all reference ignition sequences.

[0146] Optionally, the correction coefficient includes a firing interval correction coefficient and an upstream and downstream asymmetric interference correction coefficient;

[0147] The interference determination module 401 is specifically configured to:

[0148] Selecting a preset ignition interval correction coefficient from a preset ignition interval correction coefficient value range as the ignition interval correction coefficient;

[0149] Selecting a plurality of preset upstream and downstream asymmetric interference correction coefficients in a preset upstream and downstream asymmetric interference correction coefficient value range;

[0150] The upstream and downstream asymmetric interference correction coefficients are determined according to the selected multiple preset upstream and downstream asymmetric interference correction coefficients.

[0151] Optionally, the interference determination module 401 is specifically configured to:

[0152] selecting a target reference firing order from a plurality of candidate reference firing orders, and selecting a reference cylinder from the target reference firing order;

[0153] For each target cylinder corresponding to the reference, if the reference cylinder is closer to the turbine than the target cylinder, a preset first upstream and downstream asymmetric interference correction coefficient is selected within a preset first upstream and downstream asymmetric interference correction coefficient value range;

[0154] If the reference cylinder is farther from the turbine than the target cylinder, a preset second upstream and downstream asymmetric interference correction coefficient is selected within the preset second upstream and downstream asymmetric interference correction coefficient value range.

[0155] Optionally, the positional relationship between the cylinder and the plurality of target cylinders corresponding to the cylinder includes: the number of firing intervals between the cylinder and the plurality of target cylinders corresponding to the cylinder;

[0156] The interference determination module 401 is specifically configured to:

[0157] For each cylinder in the candidate reference firing sequence, the product of the sum of the firing intervals between the cylinder and a plurality of target cylinders corresponding to the cylinder and the distance between two adjacent cylinders is used as the firing interference degree of the cylinder.

[0158] Optionally, the first selection module 400 is specifically configured to:

[0159] determining a total degree of ignition interference corresponding to the plurality of reference ignition sequences according to a correction coefficient for each cylinder in the plurality of reference ignition sequences;

[0160] Determining a third queue of the plurality of reference firing sequences according to the total degree of firing interference corresponding to the plurality of reference firing sequences;

[0161] Dividing a plurality of reference firing sequences into a first upper segment set and a second upper segment set from the middle of the third queue;

[0162] Selecting a first preset number of reference firing sequences from the first upper segment set as candidate reference firing sequences; and

[0163] A second preset number of reference firing sequences are selected from the second upper segment set as candidate reference firing sequences.

[0164] Optionally, the interference determination module 401 is specifically configured to:

[0165] According to the wrap angle of the multi-cylinder engine, determining the number of upstream cylinders that interfere with the intake of the cylinders and the number of downstream cylinders that interfere with the exhaust of the cylinders;

[0166] The target cylinder corresponding to the cylinder is determined according to the reference firing order, the number of upstream cylinders interfering with the intake of the cylinder, and the number of downstream cylinders interfering with the exhaust of the cylinder.

[0167] Optionally, the adjustment module 402 is specifically configured to:

[0168] Simulating a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing sequence according to each candidate reference firing sequence;

[0169] Determining, according to a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing order, an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order;

[0170] According to the size of the evaluation index corresponding to each candidate reference firing sequence, multiple candidate reference firing sequences are sorted to obtain a second queue.

[0171] Optionally, the adjustment module 402 is specifically configured to:

[0172] For each candidate reference firing order, selecting a multi-cylinder engine performance indicator as the evaluation indicator from a plurality of multi-cylinder engine performance indicators corresponding to the candidate reference firing order; or

[0173] The sum of the multiple multi-cylinder engine performance indicators corresponding to the candidate reference ignition order is used as the evaluation indicator.

[0174] In addition, combined Figure 1-Figure 3 The method and device for selecting the firing order of a multi-cylinder engine according to the embodiment of the present invention described above can be implemented by an electronic device.

[0175] The electronic device comprises: a processor;

[0176] a memory for storing instructions executable by the processor;

[0177] Wherein, the processor is configured to execute the instructions to implement the method for selecting the firing order of a multi-cylinder engine as described in any one of the above-mentioned methods.

[0178] Based on the above introduction, an exemplary Figure 5 electronic equipment structure.

[0179] The electronic device may include a processor 510 and a memory 520 storing computer program instructions.

[0180] Specifically, the processor 510 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiment of the present invention.

[0181] The memory 520 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 520 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory 520 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 520 may be inside or outside a data processing device. In a particular embodiment, the memory 520 is a non-volatile solid-state memory. In a particular embodiment, the memory 520 includes a read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM) or a flash memory or a combination of two or more of these.

[0182] The processor 510 implements any one of the methods for performing tasks in the above embodiments by reading and executing computer program instructions stored in the memory 520 .

[0183] In one example, the electronic device may further include a communication interface 530 and a bus 540. Figure 5 As shown, the processor 510, the memory 520, and the communication interface 530 are connected via a bus 540 and communicate with each other.

[0184] The communication interface 530 is mainly used to implement the communication between the modules, devices, units and / or equipment in the embodiment of the present invention.

[0185] Bus 540 includes hardware, software or both, and the parts of electronic equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 540 may include one or more buses. Although the embodiment of the present invention describes and shows a specific bus, the present invention considers any suitable bus or interconnection.

[0186] The electronic device can execute the method for executing a task in the embodiment of the present invention based on the received task, thereby realizing the combination Figure 1-Figure 3 The invention discloses a method and device for selecting the firing order of a multi-cylinder engine.

[0187] In addition, in combination with the electronic device in the above embodiment, an embodiment of the present invention may provide a storage medium, and when the instructions in the storage medium are executed by the processor of the electronic device, the electronic device can execute the multi-cylinder engine ignition order selection method as described in any one of the above items.

[0188] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0189] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0190] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0191] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0192] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for selecting a firing order of a multi-cylinder engine, characterized in that: include: Selecting a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine; wherein the number of the candidate reference firing sequences is less than the number of the reference firing sequences; For each candidate reference firing sequence, a correction coefficient is used to correct the firing interference degree of each cylinder in the candidate reference firing sequence; and the sum of the corrected firing interference degrees of each cylinder in the candidate reference firing sequence is used as the total firing interference degree corresponding to the candidate reference firing sequence; wherein the firing interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder; If the ranking of a first queue of multiple candidate reference firing orders determined according to the total degree of firing interference corresponding to the multiple candidate reference firing orders is different from the ranking of a second queue of multiple candidate reference firing orders determined according to the multiple multi-cylinder engine performances simulated by the multiple candidate reference firing orders, modifying the correction coefficient until the ranking of the first queue is the same as the ranking of the second queue; Determine the total degree of ignition interference corresponding to all reference ignition sequences according to the correction coefficient when the first queue and the second queue are the same, and select a reference ignition sequence as the ignition sequence of the multi-cylinder engine according to the magnitude of the total degree of ignition interference corresponding to all reference ignition sequences; Wherein, the positional relationship between the cylinder and the plurality of target cylinders corresponding to the cylinder includes: the number of firing intervals between the cylinder and the plurality of target cylinders corresponding to the cylinder; The degree of ignition interference of each cylinder in the candidate reference ignition order is determined by: For each cylinder in the candidate reference firing sequence, the product of the sum of the firing intervals between the cylinder and a plurality of target cylinders corresponding to the cylinder and the distance between two adjacent cylinders is used as the firing interference degree of the cylinder.

2. The method for selecting the firing order of a multi-cylinder engine according to claim 1, characterized in that: The correction coefficients include a firing interval correction coefficient and an upstream and downstream asymmetric interference correction coefficient; The correction factor is determined by: Selecting a preset ignition interval correction coefficient from a preset ignition interval correction coefficient value range as the ignition interval correction coefficient; Selecting a plurality of preset upstream and downstream asymmetric interference correction coefficients in a preset upstream and downstream asymmetric interference correction coefficient value range; The upstream and downstream asymmetric interference correction coefficients are determined according to the selected multiple preset upstream and downstream asymmetric interference correction coefficients.

3. The method for selecting the firing order of a multi-cylinder engine according to claim 2, characterized in that: In the preset upstream and downstream asymmetric interference correction coefficient value range, multiple preset upstream and downstream asymmetric interference correction coefficients are selected, including: selecting a target reference firing order from a plurality of candidate reference firing orders, and selecting a reference cylinder from the target reference firing order; For each target cylinder corresponding to the reference cylinder, if the reference cylinder is closer to the turbine than the target cylinder, a preset first upstream and downstream asymmetric interference correction coefficient is selected within a preset first upstream and downstream asymmetric interference correction coefficient value range; If the reference cylinder is farther from the turbine than the target cylinder, a preset second upstream and downstream asymmetric interference correction coefficient is selected within the preset second upstream and downstream asymmetric interference correction coefficient value range.

4. The method for selecting the firing order of a multi-cylinder engine according to claim 1, characterized in that: A plurality of candidate reference firing orders are selected from a plurality of reference firing orders of a plurality of cylinders of a multi-cylinder engine, including: determining a total degree of ignition interference corresponding to the plurality of reference ignition sequences according to a correction coefficient for each cylinder in the plurality of reference ignition sequences; Determining a third queue of the plurality of reference firing sequences according to the total degree of firing interference corresponding to the plurality of reference firing sequences; Dividing a plurality of reference firing sequences into a first upper segment set and a second upper segment set from the middle of the third queue; Selecting a first preset number of reference firing sequences from the first upper segment set as candidate reference firing sequences; and A second preset number of reference firing sequences are selected from the second upper segment set as candidate reference firing sequences.

5. The method for selecting the firing order of a multi-cylinder engine according to claim 1, characterized in that: The target cylinder corresponding to the cylinder is determined by: According to the wrap angle of the multi-cylinder engine, determining the number of upstream cylinders that interfere with the intake of the cylinders and the number of downstream cylinders that interfere with the exhaust of the cylinders; The target cylinder corresponding to the cylinder is determined according to the reference firing order, the number of upstream cylinders interfering with the intake of the cylinder, and the number of downstream cylinders interfering with the exhaust of the cylinder.

6. The method for selecting the firing order of a multi-cylinder engine according to any one of claims 1 to 5, characterized in that: Determining a second queue of multiple candidate reference firing orders based on multiple multi-cylinder engine performances simulated from multiple candidate reference firing orders includes: Simulating a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing sequence according to each candidate reference firing sequence; Determining, according to a plurality of multi-cylinder engine performance indicators corresponding to each candidate reference firing order, an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order; According to the size of the evaluation index corresponding to each candidate reference firing sequence, multiple candidate reference firing sequences are sorted to obtain a second queue.

7. The method for selecting the firing order of a multi-cylinder engine according to claim 6, characterized in that: According to the multiple multi-cylinder engine performance indicators corresponding to each candidate reference firing order, an evaluation indicator for evaluating the multi-cylinder engine performance indicator corresponding to each candidate reference firing order is determined, including: For each candidate reference firing order, selecting a multi-cylinder engine performance indicator as the evaluation indicator from a plurality of multi-cylinder engine performance indicators corresponding to the candidate reference firing order; or The sum of the multiple multi-cylinder engine performance indicators corresponding to the candidate reference ignition order is used as the evaluation indicator.

8. A device for selecting the firing order of a multi-cylinder engine, characterized in that: include: A first selection module is used to select a plurality of candidate reference firing sequences from a plurality of reference firing sequences of a multi-cylinder engine; wherein the number of the candidate reference firing sequences is less than the number of the reference firing sequences; An interference determination module is used to correct the ignition interference degree of each cylinder in each candidate reference ignition sequence by using a correction coefficient; and the sum of the corrected ignition interference degrees of each cylinder in the candidate reference ignition sequence is used as the total ignition interference degree corresponding to the candidate reference ignition sequence; wherein the ignition interference degree of the cylinder is determined according to the positional relationship between the cylinder and a plurality of target cylinders corresponding to the cylinder; the plurality of target cylinders corresponding to the cylinder are other cylinders interfering with the intake of the cylinder and other cylinders interfering with the exhaust of the cylinder; an adjusting module, configured to modify a correction coefficient until the first queue and the second queue are in the same order if the order of a first queue of multiple candidate reference firing orders determined according to the total degree of firing interference corresponding to the multiple candidate reference firing orders is different from the order of a second queue of multiple candidate reference firing orders determined according to the performance of multiple multi-cylinder engines simulated by the multiple candidate reference firing orders; a second selection module, for determining the total degree of ignition interference corresponding to all reference ignition sequences according to the correction coefficient when the first queue and the second queue are the same, and selecting a reference ignition sequence as the ignition sequence of the multi-cylinder engine according to the magnitude of the total degree of ignition interference corresponding to all reference ignition sequences; Wherein, the positional relationship between the cylinder and the plurality of target cylinders corresponding to the cylinder includes: the number of firing intervals between the cylinder and the plurality of target cylinders corresponding to the cylinder; The degree of ignition interference of each cylinder in the candidate reference ignition order is determined by: For each cylinder in the candidate reference firing sequence, the product of the sum of the firing intervals between the cylinder and a plurality of target cylinders corresponding to the cylinder and the distance between two adjacent cylinders is used as the firing interference degree of the cylinder.

9. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method for selecting a firing order of a multi-cylinder engine according to any one of claims 1 to 7.

Images