CN115126639A

CN115126639A - Engine control method, engine control device, processor and vehicle

Info

Publication number: CN115126639A
Application number: CN202210841909.4A
Authority: CN
Inventors: 曹石; 李国朋; 刘明辉
Original assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Current assignee: Weichai Power Co Ltd; Weifang Weichai Power Technology Co Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-09-30
Anticipated expiration: 2042-07-18
Also published as: CN115126639B

Abstract

The application provides a control method, a control device, a processor and a vehicle of an engine, wherein the vehicle comprises the engine, a first electronic control unit and a second electronic control unit, the engine comprises two cylinder groups which are respectively a first cylinder group and a second cylinder group, each cylinder group comprises a plurality of cylinders, the first electronic control unit is electrically connected with the first cylinder group, and the second electronic control unit is electrically connected with the second cylinder group, the control method comprises the following steps: according to the ignition sequence and the ignition related parameters of the engine, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder group to enable each cylinder to ignite according to the ignition related parameters, wherein the ignition related parameters comprise ignition coil charging time and a target ignition advance angle, and therefore the problem that in the prior art, ignition control is performed on the engine by replacing the electronic control unit with the same hardware pin number and the total cylinder number of the engine, and the cost is high is solved.

Description

Engine control method, engine control device, processor and vehicle

Technical Field

The present application relates to the field of engine control, and in particular, to an engine control method, an engine control device, a computer-readable storage medium, a processor, and a vehicle.

Background

In general, an ignition engine outputs an ignition driving signal based on an ECU (Electronic Control Unit), controls an ignition coil of the engine, and ignites a plurality of cylinders of the engine. Normally, a drive pin of the ECU controls an ignition coil and ignites a plurality of cylinders of the engine according to the ignition sequence of the corresponding engine.

When the number of the driving pins of the single ECU is smaller than the total number of cylinders of the engine, the single ECU cannot control the normal operation of the engine due to the limitation of the hardware pins of the ECU. Meanwhile, the premise of knock control of the engine is to acquire a signal of engine knock, but the knock signal of each cylinder of the engine is closely related to combustion work (i.e. ignition drive), so that the knock signal of the engine needs to be acquired and the engine needs to be subjected to knock control while the engine is subjected to ignition control.

In the prior art, ignition control of an engine is realized by replacing an ECU with hardware pins same as the total number of cylinders of the engine. However, for developing the ECU, the ECU and the control software related to the ECU need to be redesigned. This results in longer development cycles and higher costs for the ECU.

Therefore, a need exists for a method of implementing engine ignition control and knock control at a lower cost.

The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

The application mainly aims to provide a control method, a control device, a computer readable storage medium, a processor and a vehicle of an engine, so as to solve the problem that in the prior art, ignition control is performed on the engine by replacing an electronic control unit with the same hardware pin number as the total cylinder number of the engine, so that the cost is high.

According to an aspect of an embodiment of the present invention, there is provided a control method of an engine, the vehicle including the engine, a first electronic control unit, and a second electronic control unit, the engine including two cylinder groups, a first cylinder group and a second cylinder group, respectively, each of the cylinder groups including a plurality of cylinders, the first electronic control unit being electrically connected to the first cylinder group, the second electronic control unit being electrically connected to the second cylinder group, the control method including: according to the ignition sequence and ignition related parameters of the engine, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups to enable the cylinders to ignite according to the ignition related parameters, and the ignition related parameters comprise ignition coil charging time and target ignition advance angle.

Optionally, the engine further includes a knock sensor group, the first electronic control unit is electrically connected to the knock sensor group, the knock sensor group is configured to collect knock signals of all the cylinders of the engine, and after the first electronic control unit and the second electronic control unit alternately send ignition related parameters to the cylinders in the corresponding cylinder group according to an ignition sequence of the engine, so that each cylinder ignites according to the ignition related parameters, the control method further includes: and the first electronic control unit receives the knock signals of all the cylinders sent by the knock sensor group, and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal.

Optionally, the engine further includes a knock sensor group, the knock sensor group is configured to collect knock signals of all the cylinders of the engine, the first electronic control unit is electrically connected to the knock sensor group, the second electronic control unit is electrically connected to the knock sensor group, and after the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders in the corresponding cylinder group according to an ignition sequence of the engine, so that each cylinder ignites according to the ignition-related parameters, the control method further includes: the first electronic control unit receives a knock signal of each cylinder in the first cylinder group sent by the knock sensor group, and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal; and the second electronic control unit receives the knock signal of each cylinder in the second cylinder group sent by the knock sensor group and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals.

Optionally, after determining the ignition coil charge time and the target ignition advance angle after each cylinder update according to a plurality of the knock signals, the control method further includes: and the first electronic control unit transmits the updated target ignition advance angle and the updated ignition coil charging time of each cylinder in the second cylinder group to the second electronic control unit.

Optionally, the first electronic control unit has four target pins, which are a first target pin, a second target pin, a third target pin and a fourth target pin, respectively, the first cylinder group includes a first target cylinder, a second target cylinder, a third target cylinder and a fourth target cylinder, which are arranged in sequence, and the first electronic control unit is electrically connected to the first cylinder group and includes: the first target pin is electrically connected with the first target cylinder, the second target pin is electrically connected with the second target cylinder, the third target pin is electrically connected with the third target cylinder, and the fourth target pin is electrically connected with the fourth target cylinder.

Optionally, the second electronic control unit has four target pins, which are a fifth target pin, a sixth target pin, a seventh target pin and an eighth target pin, respectively, the second cylinder group includes a fifth target cylinder, a sixth target cylinder, a seventh target cylinder and an eighth target cylinder, which are arranged in sequence, and the second electronic control unit is electrically connected to the second cylinder group, and includes: the fifth target pin is electrically connected with the fifth target cylinder, the sixth target pin is electrically connected with the sixth target cylinder, the seventh target pin is electrically connected with the seventh target cylinder, and the eighth target pin is electrically connected with the eighth target cylinder.

Optionally, the first electronic control unit and the second electronic control unit are both operated in an 8-cylinder drive mode.

Optionally, the first electronic control unit and the second electronic control unit are both operated in a 4-cylinder drive mode.

Optionally, the engine is an in-line 8 cylinder engine.

According to another aspect of an embodiment of the present invention, there is also provided a control apparatus of an engine, the vehicle including an engine, a first electronic control unit, and a second electronic control unit, the engine including two cylinder groups, respectively, a first cylinder group and a second cylinder group, each of the cylinder groups including a plurality of cylinders, the first electronic control unit being electrically connected to the first cylinder group, the second electronic control unit being electrically connected to the second cylinder group, the control apparatus including: a control unit configured to control the cylinders in the corresponding cylinder group alternately according to an ignition sequence and ignition-related parameters of the engine, so that each cylinder is ignited according to the ignition-related parameters, wherein the ignition-related parameters comprise an ignition coil charging time and a target ignition advance angle.

According to still another aspect of an embodiment of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program executes any one of the control methods.

According to still another aspect of the embodiments of the present invention, there is further provided a processor, where the processor is configured to execute a program, where the program executes any one of the control methods when running.

According to an aspect of an embodiment of the present invention, there is also provided a vehicle including a control device of an engine for executing any one of the control methods.

In an embodiment of the present invention, in the control method, the vehicle includes an engine, a first electronic control unit, and a second electronic control unit, wherein a plurality of cylinders of the engine are divisible into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, and the first electronic control unit and the second electronic control unit alternately control the cylinders of the corresponding cylinder group in accordance with an ignition order of the engine and an ignition-related parameter of the corresponding cylinder so that the corresponding cylinder ignites in accordance with the ignition-related parameter. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 shows a flow chart of a control method of an engine according to an embodiment of the present application;

FIG. 2 shows a schematic configuration of a first electronic control unit and a second electronic control unit respectively connected with a knock sensor group according to an embodiment of the present application;

FIG. 3 shows a schematic diagram of a first electronic control unit electrically connected to a first cylinder group according to an embodiment of the present application;

FIG. 4 illustrates a schematic structural diagram of a second electronic control unit electrically connected to a second cylinder bank in accordance with an embodiment of the present application;

FIG. 5 shows a schematic diagram of a first electronic control unit and a second electronic control unit controlling engine ignition according to an embodiment of the present application;

fig. 6 shows a schematic configuration diagram of a control apparatus of an engine according to an embodiment of the present application.

Wherein the figures include the following reference numerals:

10. a control unit; 100. a first electronic control unit; 101. a first target stitch; 102. a second target stitch; 103. a third target stitch; 104. a fourth target stitch; 200. a second electronic control unit; 201. a fifth target stitch; 202. a sixth target stitch; 203. a seventh target pin; 204. an eighth target stitch; 300. a first knock sensor; 400. a second knock sensor; 501. a first target cylinder; 502. a second target cylinder; 503. a third target cylinder; 504. a fourth target cylinder; 601. a fifth target cylinder; 602. a sixth target cylinder; 603. a seventh target cylinder; 604. and an eighth target cylinder.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As mentioned in the background of the invention, in order to solve the above-mentioned problem, in the prior art, which is caused by the high cost due to the replacement of the electronic control unit having the same number of hardware pins as the total number of cylinders of the engine, in an exemplary embodiment of the present application, a control method, a control device, a computer-readable storage medium, a processor and a vehicle for the engine are provided.

Fig. 1 is a flowchart of a control method of an engine according to an embodiment of the present application. The vehicle includes an engine, a first electronic control unit and a second electronic control unit, the engine includes two cylinder groups, a first cylinder group and a second cylinder group, each of the cylinder groups includes a plurality of cylinders, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, as shown in fig. 1, the control method includes the following steps:

in step S101, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder group according to an ignition sequence and ignition-related parameters of the engine, so that each cylinder is ignited according to the ignition-related parameters, where the ignition-related parameters include an ignition coil charge time and a target ignition advance angle.

In the control method, the vehicle includes an engine, a first electronic control unit and a second electronic control unit, wherein a plurality of cylinders of the engine are divided into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, and the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups according to an ignition order of the engine and ignition-related parameters of the corresponding cylinders so that the corresponding cylinders ignite according to the ignition-related parameters. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

In practical applications, the ignition-related parameter is not limited to the ignition coil charging time and the target ignition advance angle, and may be another parameter related to ignition of the engine. The present application does not limit the ignition related parameters, and specifically, the ignition related parameters may be adjusted according to an actual application scenario.

Specifically, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups, and specifically, after the first electronic control unit controls one of the cylinders in the first cylinder group in accordance with the ignition sequence of the engine, the second electronic control unit controls one of the cylinders in the second cylinder group. Taking an inline 8-cylinder engine as an example, assume that the firing order of the inline 8-cylinder engine is: 1- >6- >2- >4- >8- >3- >7- >5, when the cylinder numbers in the first cylinder group are respectively 1, 2, 8 and 7 and the cylinder numbers in the second cylinder group are respectively 6, 4, 3 and 5, according to the ignition sequence of the engine, after the first electronic control unit performs ignition driving on the cylinder with the cylinder number 1, the second electronic control unit performs ignition driving on the cylinder with the cylinder number 6, then the first electronic control unit performs ignition driving on the cylinder with the cylinder number 2, then the second electronic control unit performs ignition driving on the cylinder with the cylinder number 4, and so on, the first electronic control unit and the second electronic control unit jointly control the ignition of the engine.

Specifically, in the above-described embodiment, in the case where the engine is initially ignited, the ignition coil charging time and the target ignition advance angle may be a preset ignition coil charging time and a preset target ignition advance angle. In the case where the engine is not initially ignited, the ignition coil charge time and the target spark advance angle may be updated based on a knock signal of a corresponding cylinder transmitted from a knock sensor group.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.

In practical application, since the knock signal of the engine is generally generated after the corresponding cylinder performs combustion work (i.e. ignition driving), the signal acquisition is performed only after the combustion work (ignition drive) is performed, which is acquired by the knock sensor in the corresponding crank angle range, so in one embodiment of the present application, the engine also comprises a knock sensor group, the first electronic control unit is electrically connected with the knock sensor group, the knock sensor group is used for collecting knock signals of all cylinders of the engine, in accordance with an ignition sequence of the engine, the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders in the corresponding cylinder group, after each cylinder is ignited according to the ignition-related parameter, the control method further includes: the first electronic control unit receives the knock signals of all the cylinders transmitted by the knock sensor group, and determines the updated ignition coil charge time and the target ignition advance angle of each cylinder according to a plurality of the knock signals, wherein one cylinder corresponds to one knock signal.

Specifically, in the above-described embodiment, the knock sensor group may include two knock sensors for collecting knock signals of all cylinders of the engine. Under the condition that the knock sensor group is only electrically connected with the first electronic control unit, the first electronic control unit collects knock signals of all cylinders of the engine, and determines the updated ignition coil charging time and the target ignition advance angle of each cylinder according to a plurality of collected knock signals.

In addition, in the present application, the specific location of the knock sensor group in the engine is not limited, and it can be flexibly adjusted according to the actual wiring situation of the engine and the first electronic control unit.

Of course, the knock sensor group is not limited to two knock sensors, and the knock sensor group may be other numbers of knock sensors. In the knock sensor group, the number of the knock sensors can be flexibly adjusted according to hardware pins and cost corresponding to the knock sensors in the first electronic control unit. For example, each cylinder of the engine may correspond to one knock sensor, but this solution may cause higher cost due to the larger number of knock sensors, and also limits the number of hardware pins corresponding to the first electronic control unit, and so on.

In another embodiment of the present application, the engine further includes a knock sensor group, the knock sensor group is configured to collect knock signals of all the cylinders of the engine, the first electronic control unit is electrically connected to the knock sensor group, the second electronic control unit is electrically connected to the knock sensor group, and after the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders in the corresponding cylinder group according to an ignition sequence of the engine, so that each cylinder ignites according to the ignition-related parameters, the control method further includes: the first electronic control unit receives knock signals of each cylinder in the first cylinder group transmitted by the knock sensor group, and determines the updated ignition coil charging time and the target ignition advance angle of each cylinder according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal; the second electronic control unit is further configured to: the second electronic control unit receives a knock signal of each cylinder in the second cylinder group transmitted from the knock sensor group, and determines the ignition coil charging time and the target ignition advance angle updated for each cylinder based on a plurality of knock signals. Specifically, in this embodiment, the first electronic control unit and the second electronic control unit are both electrically connected to the knock sensor group, so the first electronic control unit can update the charging time of the ignition coil and the target ignition advance angle according to the knock signal of each cylinder in the first cylinder group sent by the knock sensor group, the second electronic control unit can update the charging time of the ignition coil and the target ignition advance angle according to the knock signal of each cylinder in the second cylinder group sent by the knock sensor group, and the subsequent first electronic control unit and the second electronic control unit control the corresponding cylinder to ignite according to the updated charging time of the ignition coil and the target ignition advance angle, thereby further ensuring accurate control over each cylinder of the engine and further ensuring the safety of the engine.

In a specific embodiment of the present application, in a case where the knock sensor group includes two knock sensors (i.e., two knock sensors, i.e., the first knock sensor 300 and the second knock sensor 400), the first electronic control unit 100 and the second electronic control unit 200 are connected to the knock sensor group, respectively, as shown in fig. 2. Specifically, first electronic control unit 100 is electrically connected to first knock sensor 300 and second knock sensor 400, respectively, and second electronic control unit 200 is electrically connected to first knock sensor 300 and second knock sensor 400, respectively.

Specifically, in the above-described embodiment, the process of determining the ignition coil charge time and the target ignition advance angle updated for each cylinder by the first electronic control unit and the second electronic control unit according to the knock signal corresponding to each cylinder includes: determining the adjustment quantity of the charging time of the ignition coil of the corresponding cylinder and the delay quantity of the ignition advance angle according to the knock signal corresponding to each cylinder, determining the updated charging time of the ignition coil according to the last charging time of the ignition coil of each cylinder and the adjustment quantity of the corresponding charging time of the ignition coil, and determining the updated charging time of the ignition coil according to the last target ignition advance angle and the delay quantity of the ignition advance angle of each cylinder.

In another embodiment of the present application, in a case where the first electronic control unit is electrically connected to the knock sensor group, that is, the first electronic control unit collects knock signals of all cylinders of the engine and updates the ignition coil charging time and the target ignition advance angle of all cylinders according to each knock signal, in order to enable the second electronic control unit to perform ignition control on each cylinder in the second cylinder group again, after determining the updated ignition coil charging time and target ignition advance angle of each cylinder according to a plurality of knock signals, the control method further includes: the first electronic control unit transmits the updated target ignition advance angle and the updated ignition coil charge time of each cylinder in the second cylinder group to the second electronic control unit.

In a specific embodiment of the present application, as shown in fig. 3, the first electronic control unit 100 has four target pins, which are a first target pin 101, a second target pin 102, a third target pin 103 and a fourth target pin 104, the first cylinder group includes a first target cylinder 501, a second target cylinder 502, a third target cylinder 503 and a fourth target cylinder 504, which are arranged in sequence, and the first electronic control unit 100 is electrically connected to the first cylinder group, and includes: the first target pin 101 is electrically connected to the first target cylinder 501, the second target pin 102 is electrically connected to the second target cylinder 502, the third target pin 103 is electrically connected to the third target cylinder 503, and the fourth target pin 104 is electrically connected to the fourth target cylinder 504.

Specifically, in the above-described embodiment, the cylinder numbers of the four target cylinders in the above-described first cylinder group may be 1, 2, 8, and 7, respectively, in the ignition order of the engine 1- >6- >2- >4- >8- >3- >7- > 5. The first electronic control unit correspondingly drives the corresponding target pin once every 180-degree interval according to the ignition sequence, and the cylinder corresponding to the middle interval of 90-degree is not driven (namely, the second electronic control unit drives).

In another specific embodiment of the present application, as shown in fig. 4, the second electronic control unit 200 has four target pins, which are a fifth target pin 201, a sixth target pin 202, a seventh target pin 203 and an eighth target pin 204, the second cylinder group includes a fifth target cylinder 601, a sixth target cylinder 602, a seventh target cylinder 603 and an eighth target cylinder 604, which are sequentially arranged, and the second electronic control unit 200 is electrically connected to the second cylinder group, and includes: the fifth target pin 201 is electrically connected to the fifth target cylinder 601, the sixth target pin 202 is electrically connected to the sixth target cylinder 602, the seventh target pin 203 is electrically connected to the seventh target cylinder 603, and the eighth target pin 204 is electrically connected to the eighth target cylinder 604.

Specifically, in the above-described embodiment, the cylinder numbers of the four target cylinders in the above-described second cylinder group may be 6, 4, 3, and 5, respectively, in the ignition order of the engine 1- >6- >2- >4- >8- >3- >7- > 5. Similarly, the second electronic control unit drives the corresponding target pin once every 180 degrees in the ignition sequence, and the cylinders corresponding to 90 degrees in the middle are not driven (i.e. the first electronic control unit drives).

In one embodiment of the present application, the first electronic control unit and the second electronic control unit are operated in an 8-cylinder driving mode. In this embodiment, since the first electronic control unit is electrically connected to the knock sensor group, both the first electronic control unit and the second electronic control unit operate in an 8-cylinder driving mode in order that the first electronic control unit can collect knock signals corresponding to the cylinders in the second cylinder group.

Specifically, the software corresponding to the first electronic control unit and the second electronic control unit is modified from a 4-cylinder driving mode to an 8-cylinder driving mode, that is, the 8-cylinder driving mode meets 8 seg tasks, 8-cylinder ignition (actually only 4 cylinders are used) and knock signal acquisition of 8 cylinders; the first electronic control unit and the second electronic control unit realize ignition control corresponding to 4 cylinders in a cylinder deactivation mode, and meanwhile four driving pins of each electronic control unit in software need to be allocated with ignition driving of 2 cylinders.

In another embodiment of the present application, the first electronic control unit and the second electronic control unit are operated in a 4-cylinder driving mode. In this embodiment, since the first electronic control unit and the second electronic control unit are respectively electrically connected to the knock sensor group, the first electronic control unit and the second electronic control unit may operate in a 4-cylinder driving mode and collect knock signals of the cylinders in the corresponding cylinder group.

Specifically, in the application, the software corresponding to the first electronic control unit and the second electronic control unit adopts a 4-cylinder driving mode, that is, the 4-cylinder driving mode meets 4 seg tasks, 4-cylinder ignition and 4-cylinder knock signal acquisition, meanwhile, 4 hardware pins of each electronic control unit in the software need to be respectively configured with 1-cylinder ignition driving, and the first electronic control unit and the second electronic control unit perform ignition driving control on the corresponding cylinders at an interval of 180 degrees each time according to an ignition timing sequence.

In yet another embodiment of the present application, the engine is an in-line 8 cylinder engine.

Of course, in practical applications, the engine is not limited to the inline 8-cylinder engine, and may also be a V-type 8-cylinder engine, and the type of the engine is not limited in the present application. The type of the engine can be flexibly adjusted according to actual conditions.

In one specific embodiment of the present application, the firing sequence of an in-line 8 cylinder engine is exemplified as shown in FIG. 5. Specifically, one working cycle is two crank revolutions, corresponding to 720 crank degrees, where each cylinder is spaced 90 degrees apart to perform combustion work. In the present application, the first target pin 101 of the first electronic control unit is electrically connected to the first target cylinder (i.e. 1 cylinder), the fifth target pin 201 of the second electronic control unit is electrically connected to the fifth target cylinder (i.e. 6 cylinders), the second target pin 102 of the first electronic control unit is electrically connected to the second target cylinder (i.e. 2 cylinders), the sixth target pin 202 of the second electronic control unit is electrically connected to the sixth target cylinder (i.e. 4 cylinders), the third target pin 103 of the first electronic control unit is electrically connected to the third target cylinder (i.e. 8 cylinders), the seventh target pin 203 of the second electronic control unit is electrically connected to the seventh target cylinder (i.e. 3 cylinders), the fourth target pin 104 of the first electronic control unit is electrically connected to the fourth target cylinder (i.e. 7 cylinders), and the eighth target pin 204 of the second electronic control unit is electrically connected to the eighth target cylinder (i.e. 5 cylinders).

When the first electronic control unit and the second electronic control unit both operate in an 8-cylinder driving mode, after the first electronic control unit performs ignition control on 1 cylinder (namely, a first target cylinder), because 6 cylinders (a fifth target cylinder) are electrically connected with the second electronic control unit, the first electronic control unit performs cylinder deactivation when the first electronic control unit operates to 6 cylinders for ignition in a software cylinder deactivation mode, but the first electronic control unit needs to acquire knock signals of the 6 cylinders (actually, the 6 cylinders are driven by the second electronic control unit at this time). Similarly, for other cylinders, the first electronic control unit also performs ignition control in a manner of driving at 180-degree intervals and cylinder deactivation at 90-degree intervals. For the first electronic control unit, the knock signals of 8 cylinders need to be collected; and the second electronic control unit starts to drive from 6 cylinders according to the ignition sequence and performs ignition driving according to the manner of the first electronic control unit, but does not collect and calculate the knock signal of each cylinder.

When the first electronic control unit and the second electronic control unit both operate in a 4-cylinder driving mode, four target pins of the first electronic control unit and the second electronic control unit are respectively spaced by 180 degrees to drive the corresponding cylinders to perform ignition control.

The embodiment of the present application further provides a control device of an engine, and it should be noted that the control device of the engine according to the embodiment of the present application may be used to execute the control method for the engine according to the embodiment of the present application. The following describes a control device for an engine according to an embodiment of the present invention.

Fig. 6 is a schematic configuration diagram of a control device of an engine according to an embodiment of the present application. As shown in fig. 6, the control apparatus includes:

a control unit 10 configured to control the cylinders of the corresponding cylinder group alternately according to an ignition sequence and ignition-related parameters of the engine, so that each cylinder is ignited according to the ignition-related parameters, wherein the ignition-related parameters include an ignition coil charge time and a target ignition advance angle.

In the above control apparatus, the vehicle includes an engine, a first electronic control unit and a second electronic control unit, wherein a plurality of cylinders of the engine are dividable into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, the control unit is configured to control the cylinders of the corresponding cylinder group alternately in accordance with an ignition order of the engine and an ignition-related parameter of the corresponding cylinder, and the first electronic control unit and the second electronic control unit ignite the corresponding cylinders in accordance with the ignition-related parameter. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

In practical applications, since the knock signal of the engine is generally collected by the knock sensor in the corresponding crank angle range after performing combustion work (i.e. ignition driving) on the corresponding cylinder, and only after performing combustion work (ignition driving), in an embodiment of the present application, the engine further includes a knock sensor group, the first electronic control unit is electrically connected to the knock sensor group, the knock sensor group is configured to collect knock signals of all the cylinders of the engine, and according to an ignition sequence of the engine, the first electronic control unit and the second electronic control unit alternately send ignition related parameters to the cylinders in the corresponding cylinder group, so that after each cylinder is ignited according to the ignition related parameters, the control device further includes a first receiving unit, the first electronic control unit is configured to receive the knock signals of all the cylinders transmitted from the knock sensor group, and determine the ignition coil charging time and the target ignition advance angle updated for each of the cylinders based on a plurality of the knock signals, one of the cylinders corresponding to one of the knock signals.

In another embodiment of the present application, the engine further includes a knock sensor group, the knock sensor group is configured to collect knock signals of all the cylinders of the engine, the first electronic control unit is electrically connected to the knock sensor group, the second electronic control unit is electrically connected to the knock sensor group, the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders of the corresponding cylinder group according to an ignition sequence of the engine, so that each cylinder ignites according to the ignition-related parameters, the control device further includes a second receiving unit and a third receiving unit, wherein the second receiving unit is configured to receive the knock signal of each cylinder of the first cylinder group sent by the knock sensor group by the first electronic control unit, determining the updated charging time of the ignition coil and the target ignition advance angle of each cylinder according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal; the second electronic control unit is further configured to: the third receiving unit is configured such that the second electronic control unit receives a knock signal of each of the cylinders in the second cylinder group transmitted from the knock sensor group, and determines the ignition coil charge time and the target ignition advance angle updated for each of the cylinders based on a plurality of the knock signals. Specifically, in this embodiment, the first electronic control unit and the second electronic control unit are both electrically connected to the knock sensor group, so the first electronic control unit can update the charging time of the ignition coil and the target ignition advance angle according to the knock signal of each cylinder in the first cylinder group sent by the knock sensor group, the second electronic control unit can update the charging time of the ignition coil and the target ignition advance angle according to the knock signal of each cylinder in the second cylinder group sent by the knock sensor group, and the subsequent first electronic control unit and the second electronic control unit control the corresponding cylinder to ignite according to the updated charging time of the ignition coil and the target ignition advance angle, thereby further ensuring accurate control over each cylinder of the engine and further ensuring the safety of the engine.

Specifically, in the above embodiment, the process of determining the updated charging time of the ignition coil and the updated target ignition advance angle of each cylinder by the first electronic control unit and the second electronic control unit according to the knock signal corresponding to each cylinder includes: determining an adjustment amount of the ignition coil charging time and a delay amount of the ignition advance angle of the corresponding cylinder according to the knock signal corresponding to each cylinder, determining the updated ignition coil charging time according to the previous ignition coil charging time of each cylinder and the adjustment amount of the corresponding ignition coil charging time, and determining the updated ignition coil charging time according to the target ignition advance angle and the delay amount of the ignition advance angle of each cylinder.

In order to enable the second electronic control unit to perform ignition control again on each cylinder in the second cylinder group when the first electronic control unit is electrically connected with the knock sensor group, that is, the first electronic control unit collects knock signals of all cylinders of the engine and updates the ignition coil charging time and the target ignition advance angle of all cylinders according to each knock signal, in another embodiment of the present application, after the updated ignition coil charging time and the target ignition advance angle of each cylinder are determined according to a plurality of knock signals, the control device further includes a transmitting unit configured to transmit the updated target ignition coil charging time and the updated ignition coil charging time of each cylinder in the second cylinder group to the second electronic control unit by the first electronic control unit.

In a specific embodiment of the present application, as shown in fig. 3, the first electronic control unit 100 has four target pins, namely a first target pin 101, a second target pin 102, a third target pin 103 and a fourth target pin 104, the first cylinder group includes a first target cylinder 501, a second target cylinder 502, a third target cylinder 503 and a fourth target cylinder 504, which are arranged in sequence, and the first electronic control unit 100 is electrically connected to the first cylinder group, and includes: the first target pin 101 is electrically connected to the first target cylinder 501, the second target pin 102 is electrically connected to the second target cylinder 502, the third target pin 103 is electrically connected to the third target cylinder 503, and the fourth target pin 104 is electrically connected to the fourth target cylinder 504.

Specifically, in the above-described embodiment, the cylinder numbers of the four target cylinders in the above-described second cylinder group may be 6, 4, 3, and 5, respectively, in the ignition order of the engine 1- >6- >2- >4- >8- >3- >7- > 5. Similarly, the second electronic control unit drives the corresponding target pins once every 180-degree interval according to the ignition sequence, and the cylinders corresponding to the middle 90-degree interval are not driven (i.e. the first electronic control unit drives).

Specifically, the software corresponding to the first electronic control unit and the second electronic control unit is modified from a 4-cylinder driving mode to an 8-cylinder driving mode, that is, the 8-cylinder driving mode meets 8 seg tasks, 8-cylinder ignition (actually only 4 cylinders are used), and knock signal acquisition of 8 cylinders; the first electronic control unit and the second electronic control unit realize ignition control corresponding to 4 cylinders in a cylinder deactivation mode, and meanwhile four driving pins of each electronic control unit in software need to be allocated with ignition driving of 2 cylinders.

Of course, in practical application, the engine is not limited to an in-line 8-cylinder engine, but may also be a V-type 8-cylinder engine, and in the present application, the type of the engine is not limited. The type of the engine can be flexibly adjusted according to actual conditions.

In one specific embodiment of the present application, the firing sequence of an in-line 8 cylinder engine is exemplified as shown in FIG. 5. Specifically, one working cycle is cranked two revolutions, corresponding to a crank angle of 720 degrees, where each cylinder is spaced 90 degrees apart to perform combustion work. In the present application, the first target pin 101 of the first electronic control unit is electrically connected to the first target cylinder (i.e. 1 cylinder), the fifth target pin 201 of the second electronic control unit is electrically connected to the fifth target cylinder (i.e. 6 cylinders), the second target pin 102 of the first electronic control unit is electrically connected to the second target cylinder (i.e. 2 cylinders), the sixth target pin 202 of the second electronic control unit is electrically connected to the sixth target cylinder (i.e. 4 cylinders), the third target pin 103 of the first electronic control unit is electrically connected to the third target cylinder (i.e. 8 cylinders), the seventh target pin 203 of the second electronic control unit is electrically connected to the seventh target cylinder (i.e. 3 cylinders), the fourth target pin 104 of the first electronic control unit is electrically connected to the fourth target cylinder (i.e. 7 cylinders), and the eighth target pin 204 of the second electronic control unit is electrically connected to the eighth target cylinder (i.e. 5 cylinders).

The control device of the engine comprises a processor and a memory, the control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem of high cost caused by the fact that the ignition control is carried out on the engine by replacing the electronic control unit with the hardware pins the same as the total cylinder number of the engine in the prior art is solved by adjusting the kernel parameters.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), including at least one memory chip.

An embodiment of the present invention provides a computer-readable storage medium having stored thereon a program that, when executed by a processor, implements the control method of the engine described above.

The embodiment of the invention provides a processor, which is used for running a program, wherein the control method of the engine is executed when the program runs.

In an exemplary embodiment of the present application, there is also provided a vehicle including a control apparatus of an engine for executing any one of the above-described control methods.

The vehicle described above includes a control device of the engine for executing any one of the control methods described above. In the control method, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder group in accordance with an ignition order of the engine and an ignition-related parameter of the corresponding cylinder so that the corresponding cylinder ignites in accordance with the ignition-related parameter. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:

The device herein may be a server, a PC, a PAD, a mobile phone, etc.

The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

1) in the control method of the present application, the vehicle includes an engine, a first electronic control unit, and a second electronic control unit, wherein a plurality of cylinders of the engine are divided into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, and the first electronic control unit and the second electronic control unit alternately control the cylinders of the corresponding cylinder groups in accordance with an ignition order of the engine and ignition-related parameters of the corresponding cylinders so that the corresponding cylinders are ignited in accordance with the ignition-related parameters. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

2) In the control device of the present application, the vehicle includes an engine, a first electronic control unit and a second electronic control unit, wherein a plurality of cylinders of the engine are divided into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, the control unit is configured to control the cylinders of the corresponding cylinder group alternately in accordance with an ignition order of the engine and an ignition-related parameter of the corresponding cylinder, and the first electronic control unit and the second electronic control unit ignite the corresponding cylinders in accordance with the ignition-related parameter. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number identical to the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number identical to the total cylinder number of the engine does not need to be replaced, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is conducted on the engine through the electronic control unit with the hardware pin number identical to the total cylinder number of the engine, and cost is high is solved.

3) The vehicle of the present application includes a control device of an engine for executing any one of the above-described control methods. In the control method, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder group in accordance with an ignition order of the engine and an ignition-related parameter of the corresponding cylinder so that the corresponding cylinder ignites in accordance with the ignition-related parameter. Compared with the prior art, when the hardware pin number of the electronic control unit is smaller than the total cylinder number of the engine, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine is replaced, the control method controls the engine through the first electronic control unit and the second electronic control unit in a combined mode, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be replaced, the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine does not need to be newly installed, control software corresponding to the electronic control unit does not need to be developed, and therefore the problem that in the prior art, ignition control is performed on the engine through replacing the electronic control unit with the hardware pin number being the same as the total cylinder number of the engine, and cost is high is solved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method of an engine, characterized in that a vehicle includes the engine, a first electronic control unit, and a second electronic control unit, the engine includes two cylinder groups, a first cylinder group and a second cylinder group, respectively, each of the cylinder groups includes a plurality of cylinders, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, the control method includes:

according to the ignition sequence and ignition related parameters of the engine, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups to enable the cylinders to ignite according to the ignition related parameters, and the ignition related parameters comprise the charging time of an ignition coil and a target ignition advance angle.

2. The control method according to claim 1, characterized in that the engine further comprises a knock sensor group, the first electronic control unit being electrically connected to the knock sensor group for collecting knock signals of all the cylinders of the engine,

after the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders in the corresponding cylinder groups according to the ignition sequence of the engine, so that each cylinder ignites according to the ignition-related parameters, the control method further comprises:

and the first electronic control unit receives the knock signals of all the cylinders sent by the knock sensor group, and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal.

3. The control method of claim 1, wherein the engine further comprises a knock sensor group for collecting knock signals of all the cylinders of the engine, the first electronic control unit is electrically connected with the knock sensor group, the second electronic control unit is electrically connected with the knock sensor group, and after the first electronic control unit and the second electronic control unit alternately send ignition-related parameters to the cylinders in the corresponding cylinder group in accordance with an ignition sequence of the engine so that each cylinder ignites according to the ignition-related parameters, the control method further comprises:

the first electronic control unit receives a knock signal of each cylinder in the first cylinder group sent by the knock sensor group, and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals, wherein one cylinder corresponds to one knock signal;

and the second electronic control unit receives the knock signal of each cylinder in the second cylinder group sent by the knock sensor group and determines the ignition coil charging time and the target ignition advance angle after each cylinder is updated according to a plurality of knock signals.

4. The control method according to claim 2, after determining the ignition coil charge time and the target spark advance angle after each of the cylinder updates based on a plurality of the knock signals, the control method further comprising:

and the first electronic control unit transmits the updated target ignition advance angle and the updated ignition coil charging time of each cylinder in the second cylinder group to the second electronic control unit.

5. The control method according to claim 1, wherein the first electronic control unit has four target pins, a first target pin, a second target pin, a third target pin and a fourth target pin, respectively, the first cylinder group includes a first target cylinder, a second target cylinder, a third target cylinder and a fourth target cylinder arranged in this order,

the first electronic control unit is electrically connected with the first cylinder group and comprises:

the first target pin is electrically connected with the first target cylinder, the second target pin is electrically connected with the second target cylinder, the third target pin is electrically connected with the third target cylinder, and the fourth target pin is electrically connected with the fourth target cylinder.

6. The control method according to claim 1, characterized in that the second electronic control unit has four target pins, a fifth target pin, a sixth target pin, a seventh target pin and an eighth target pin, respectively, the second cylinder group comprises a fifth target cylinder, a sixth target cylinder, a seventh target cylinder and an eighth target cylinder arranged in sequence,

the second electronic control unit is electrically connected with the second cylinder group and comprises:

the fifth target pin is electrically connected with the fifth target cylinder, the sixth target pin is electrically connected with the sixth target cylinder, the seventh target pin is electrically connected with the seventh target cylinder, and the eighth target pin is electrically connected with the eighth target cylinder.

7. The control method according to claim 2, characterized in that both the first electronic control unit and the second electronic control unit are operated in an 8-cylinder drive mode.

8. The control method according to claim 3, characterized in that both the first electronic control unit and the second electronic control unit are operated in a 4-cylinder drive mode.

9. The control method according to any one of claims 1 to 8, characterized in that the engine is an inline 8-cylinder engine.

10. A control apparatus of an engine, characterized in that a vehicle includes the engine, a first electronic control unit, and a second electronic control unit, the engine includes two cylinder groups, a first cylinder group and a second cylinder group, each of the cylinder groups includes a plurality of cylinders, the first electronic control unit is electrically connected to the first cylinder group, the second electronic control unit is electrically connected to the second cylinder group, the control apparatus includes:

a control unit configured to control the cylinders in the corresponding cylinder group alternately according to an ignition sequence and ignition-related parameters of the engine, so that each cylinder is ignited according to the ignition-related parameters, wherein the ignition-related parameters include an ignition coil charging time and a target ignition advance angle.

11. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein the program executes the control method of any one of claims 1 to 9.

12. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the control method according to any one of claims 1 to 9 when running.

13. A vehicle characterized by comprising a control device of an engine for executing the control method of any one of claims 1 to 9.