CN115126639B

CN115126639B - Engine control method, engine control device, processor and vehicle

Info

Publication number: CN115126639B
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: 2023-07-18
Anticipated expiration: 2042-07-18
Also published as: CN115126639A

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, namely 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, and the control method comprises the following steps: according to the ignition sequence of the engine and ignition related parameters, the first electronic control unit and the second electronic control unit alternately control cylinders in the corresponding cylinder groups so that each cylinder ignites according to the ignition related parameters, wherein the ignition related parameters comprise the ignition coil charging time and the target ignition advance angle, and therefore the problem of high cost caused by the fact that the engine is subjected to ignition control by replacing the electronic control units with the same hardware pins as the total cylinders of the engine in the prior art 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 is configured to output an ignition drive signal based on an ECU (electronic control unit Electronic Control Unit, abbreviated as ECU) to control an ignition coil of the engine, thereby achieving ignition of a plurality of cylinders of the engine. Typically, one drive pin of the ECU controls one ignition coil and ignites a plurality of cylinders of the engine in accordance with the corresponding ignition sequence of the engine.

When the number of driving pins of a 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 resource limitation of hardware pins of the ECU. Meanwhile, the premise of the knock control of the engine is to acquire a knock signal of the engine, but the knock signal of each cylinder of the engine is closely related to combustion work (namely ignition driving), so that the knock signal of the engine is acquired and the knock control of the engine is performed while the ignition control of the engine is performed.

In the prior art, ignition control of an engine is realized by replacing an ECU with the same hardware pins as the total cylinders of the engine. However, for developing the ECU, redesign of the ECU and control software associated with the ECU is required. This results in a longer development cycle and higher cost of the ECU.

Therefore, there is a need for a method that can achieve engine ignition control and knock control at a low cost.

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

Disclosure of Invention

The main object of the present application is to provide a control method, a control device, a computer readable storage medium, a processor and a vehicle for an engine, so as to solve the problem of higher cost caused by that an electronic control unit with the same number of pins of hardware and the same number of total cylinders of the engine is replaced to perform ignition control on the engine in the prior art.

According to an aspect of an embodiment of the present invention, there is provided a control method of an engine, a 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 therein, 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: the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups according to the ignition sequence of the engine and ignition related parameters, such that each cylinder ignites according to the ignition related parameters, including 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 used for collecting knock signals of all 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 group according to an ignition sequence of the engine, so that after each cylinder ignites according to the ignition related parameters, the control method further includes: the first electronic control unit receives the knock signals of all cylinders sent by the knock sensor group, and determines 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.

Optionally, the engine further includes a knock sensor group for collecting knock signals of all 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 of the corresponding cylinder group in the 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 sent by the knock sensor group, and determines 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 receives knock signals of each cylinder in the second cylinder group sent by the knock sensor group, and determines the updated charging time of the ignition coil and the target ignition advance angle of each cylinder according to a plurality of knock signals.

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

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

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

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

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

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

According to another aspect of the embodiment of the present invention, there is also provided a control device of an engine, a 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 therein, the first electronic control unit being electrically connected with the first cylinder group, the second electronic control unit being electrically connected with the second cylinder group, the control device including: and a control unit configured to alternately control the cylinders in the corresponding cylinder groups in accordance with an ignition sequence of the engine and ignition-related parameters including an ignition coil charge time and a target ignition advance angle, so that each of the cylinders ignites in accordance with the ignition-related parameters.

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

According to an aspect of the 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 may be divided into a first cylinder group and a second cylinder group, the first electronic control unit is electrically connected with the first cylinder group, the second electronic control unit is electrically connected with 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 sequence of the engine and ignition related parameters of the corresponding cylinders, so that the corresponding cylinders are ignited according to the ignition related parameters. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and 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 do not constitute an undue limitation to the application. In the drawings:

FIG. 1 illustrates a flow chart of a method of controlling an engine according to one embodiment of the present application;

FIG. 2 illustrates a schematic structural diagram of a first electronic control unit and a second electronic control unit respectively connected to a knock sensor group according to one embodiment of the present application;

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

FIG. 4 shows a schematic structural view of a second electronic control unit electrically connected to a second cylinder group according to one 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 structural view of a control device of an engine according to an embodiment of the present application.

Wherein the above 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 stitch; 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 case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. 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 described in the background art, in order to solve the above-mentioned problem, 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 an engine are provided in the prior art, in which ignition control is performed on the engine by replacing an electronic control unit having the same number of pins as the total number of cylinders of the engine.

Fig. 1 is a flowchart of a control method of an engine according to an embodiment of the present application. The vehicle comprises an engine, a first electronic control unit and a second electronic control unit, wherein the engine comprises two cylinder groups, namely 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, and the control method comprises the following steps:

step S101, according to the ignition sequence of the engine and ignition related parameters, the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder group, so that each cylinder ignites according to the ignition related parameters, wherein the ignition related parameters include an ignition coil charging 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 may be 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 so that the corresponding cylinders are ignited according to the ignition-related parameters in accordance with an ignition sequence of the engine and ignition-related parameters of the corresponding cylinders. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

In practical application, the ignition-related parameters are not limited to the ignition coil charging time and the target ignition advance angle, but may be other parameters related to ignition of the engine. The ignition related parameters are not limited, and specifically 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 cylinder in the first cylinder group in the firing order of the engine, the second electronic control unit controls one cylinder in the second cylinder group. Taking an in-line 8-cylinder engine as an example, assume that the firing order of the in-line 8-cylinder engine is: 1- >6- >2- >4- >8- >3- >7- >5, and 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, the first electronic control unit performs ignition driving on the cylinder with the cylinder number 1, then 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, and the first electronic control unit and the second electronic control unit jointly control the ignition of the engine.

Specifically, in the above 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. When the engine is not initially ignited, the ignition coil charging time and the target ignition advance angle may be updated ignition coil charging time and target ignition advance angle according to knock signals of the corresponding cylinders 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 other than that illustrated herein.

In an embodiment of the present application, since the knock signal of the engine is generally collected by the knock sensor in the corresponding crank angle range after the combustion work (i.e. ignition driving) is performed by the corresponding cylinder, and the signal is collected only after the combustion work (ignition driving) is performed, the first electronic control unit is electrically connected to the knock sensor group, and the knock sensor group is used to collect knock signals of all the cylinders of the engine, and the first electronic control unit and the second electronic control unit alternately send the ignition related parameters to the cylinders in the corresponding cylinder group according to the ignition sequence of the engine, so that after each cylinder is ignited according to the ignition related parameters, 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 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.

Specifically, in the above-described embodiment, the knock sensor group may include two knock sensors for acquiring knock signals of all cylinders of the engine. And 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 target ignition advance angle of each cylinder according to the collected knock signals.

In addition, in the present application, the specific position of the knock sensor group in the engine is not limited, and it may be flexibly adjusted according to the actual connection 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 number 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 result in higher costs due to the higher number of knock sensors, while limiting the number of hardware pins corresponding to the first electronic control unit, etc.

In another embodiment of the present application, the engine further includes a knock sensor group for collecting knock signals of all 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 of the corresponding cylinder group in the order of ignition of the engine, so that each cylinder is ignited according to the ignition-related parameters, the control method further includes: the first electronic control unit receives knock signals of the cylinders in the first cylinder group sent by the knock sensor group, and determines 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 second electronic control unit receives knock signals of the cylinders in the second cylinder group transmitted from the knock sensor group, and determines the updated charge time of the ignition coil and the target ignition advance angle of each cylinder based on 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 that the first electronic control unit may 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 may 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 then the first electronic control unit and the second electronic control unit control the corresponding cylinders to perform ignition according to the updated charging time of the ignition coil and the target ignition advance angle, so that the control of each cylinder of the engine is further ensured to be more accurate, and the safety of the engine is further ensured.

In a specific embodiment of the present application, in the 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, respectively), 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, the first electronic control unit 100 is electrically connected to the first knock sensor 300 and the second knock sensor 400, respectively, and the second electronic control unit 200 is electrically connected to the first knock sensor 300 and the second knock sensor 400, respectively.

Specifically, in the above embodiment, the first electronic control unit and the second electronic control unit determine, according to knock signals corresponding to the cylinders, the updated charging time of the ignition coil and the target ignition advance angle of each cylinder by: according to the knock signals corresponding to the cylinders, the adjustment quantity of the charging time of the ignition coil and the retardation quantity of the ignition advance angle of the corresponding cylinder are determined, according to the last time of the charging time of the ignition coil of the cylinders and the adjustment quantity of the charging time of the corresponding ignition coil, the updated charging time of the ignition coil is determined, and according to the last time of the target ignition advance angle and the retardation quantity of the ignition advance angle of the cylinders, the updated charging time of the ignition coil is determined.

In another embodiment of the present application, after 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, the control method further includes: 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.

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 sequentially arranged, and the first electronic control unit 100 is electrically connected to the first cylinder group, and includes: the first target stitch 101 is electrically connected to the first target cylinder 501, the second target stitch 102 is electrically connected to the second target cylinder 502, the third target stitch 103 is electrically connected to the third target cylinder 503, and the fourth target stitch 104 is electrically connected to the fourth target cylinder 504.

Specifically, in the above embodiment, the cylinder numbers of the four target cylinders in the first cylinder group may be 1, 2, 8, and 7, respectively, in the firing order of the engine of 1- >6- >2- >4- >8- >3- >7- > 5. The first electronic control unit drives the corresponding target stitch once by corresponding ignition at intervals of 180 degrees according to the ignition sequence, and the corresponding cylinder at intervals of 90 degrees 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, namely, 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 stitch 201 is electrically connected to the fifth target cylinder 601, the sixth target stitch 202 is electrically connected to the sixth target cylinder 602, the seventh target stitch 203 is electrically connected to the seventh target cylinder 603, and the eighth target stitch 204 is electrically connected to the eighth target cylinder 604.

Specifically, in the above embodiment, the cylinder numbers of the four target cylinders in the second cylinder group may be 6, 4, 3, and 5, respectively, in the firing order of the engine of 1- >6- >2- >4- >8- >3- >7- > 5. Similarly, the second electronic control unit drives the corresponding target pin once every 180 degrees of corresponding ignition according to the ignition sequence, and the corresponding cylinder at the middle interval of 90 degrees is not driven (namely, 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 each operated in an 8-cylinder drive mode. In this embodiment, since the first electronic control unit is electrically connected to the knock sensor group, the first and second electronic control units are operated in the 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, 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 (only 4 cylinders are actually used) and 8-cylinder knock signal acquisition; the first electronic control unit and the second electronic control unit realize ignition control of corresponding 4 cylinders in a cylinder deactivation mode, and meanwhile four driving pins of each electronic control unit in software are required 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 each operated in a 4-cylinder drive mode. In this embodiment, since the first electronic control unit and the second electronic control unit are electrically connected to the knock sensor group, respectively, the first electronic control unit and the second electronic control unit can operate in the 4-cylinder driving mode and collect knock signals of the respective cylinders in the corresponding cylinder group.

Specifically, in the application, 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 knocking signal acquisition, meanwhile, 4 hardware pins of each electronic control unit in the software are required to be respectively configured with ignition driving of 1 cylinder, and the first electronic control unit and the second electronic control unit perform ignition driving control on the corresponding cylinders at intervals of 180 degrees each time according to an ignition time sequence.

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

Of course, in practical application, the engine is not limited to an in-line 8-cylinder engine, but may 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 a specific embodiment of the present application, as shown in FIG. 5, the firing order of an in-line 8-cylinder engine is taken as an example. Specifically, one duty cycle crankshafts two revolutions, corresponding to 720 degrees of crank angle, wherein each cylinder performs combustion work at 90 degrees intervals. In this 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 cylinder), the second target pin 102 of the first electronic control unit is electrically connected to the second target cylinder (i.e. 2 cylinder), the sixth target pin 202 of the second electronic control unit is electrically connected to the sixth target cylinder (i.e. 4 cylinder), the third target pin 103 of the first electronic control unit is electrically connected to the third target cylinder (i.e. 8 cylinder), the seventh target pin 203 of the second electronic control unit is electrically connected to the seventh target cylinder (i.e. 3 cylinder), the fourth target pin 104 of the first electronic control unit is electrically connected to the fourth target cylinder (i.e. 7 cylinder), and the eighth target pin 204 of the second electronic control unit is electrically connected to the eighth target cylinder (i.e. 5 cylinder).

When the first electronic control unit and the second electronic control unit are operated in the 8-cylinder driving mode, after the first electronic control unit performs ignition control on the 1 cylinder (i.e., the first target cylinder), the first electronic control unit performs cylinder deactivation when the first electronic control unit is operated to the 6-cylinder ignition by means of software cylinder deactivation because the 6 cylinder (the fifth target cylinder) is electrically connected with the second electronic control unit, but the first electronic control unit needs to acquire a knocking signal of the 6 cylinders (the actual 6 cylinders are driven by the second electronic control unit at this time). Similarly, the first electronic control unit performs ignition control for other cylinders by driving at 180-degree intervals and stopping at 90-degree intervals. For the first electronic control unit, it is necessary to acquire knock signals of 8 cylinders; the second electronic control unit starts driving from 6 cylinders in the firing order, and performs the firing driving in the manner described above for the first electronic control unit, but the second electronic control unit does not acquire and calculate the knock signal for each cylinder.

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

The embodiment of the application also provides a control device of the engine, and the control device of the engine can be used for executing the control method for the engine. The following describes a control device of an engine provided in an embodiment of the present application.

Fig. 6 is a schematic structural view of a control device 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 with the first cylinder group, the second electronic control unit is electrically connected with the second cylinder group, as shown in fig. 6, the control device includes:

and a control unit 10 configured to alternately control the cylinders in the corresponding cylinder groups in accordance with an ignition sequence of the engine and ignition-related parameters including an ignition coil charge time and a target ignition advance angle, so that each of the cylinders ignites in accordance with the ignition-related parameters.

In the control device described above, the vehicle includes an engine, a first electronic control unit and a second electronic control unit, wherein a plurality of cylinders of the engine may be 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 alternately control the cylinders of the corresponding cylinder groups in accordance with an ignition sequence 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 number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

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

In another embodiment of the present application, the engine further includes a knock sensor group for collecting 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 the first electronic control unit and the second electronic control unit alternately transmit ignition-related parameters to the cylinders in the corresponding cylinder group in accordance with an ignition sequence of the engine so that after each cylinder is ignited 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 such that 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 charge time of the ignition coil and the target ignition advance angle after each cylinder is updated according to a plurality of the knock signals, wherein one of the cylinders corresponds to one of the knock signals; the second electronic control unit is further configured to: the third receiving unit is configured to receive knock signals of the cylinders in the second cylinder group transmitted from the knock sensor group, and determine the updated charge time of the ignition coil and the target ignition advance angle of each cylinder based on 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 that the first electronic control unit may 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 may 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 then the first electronic control unit and the second electronic control unit control the corresponding cylinders to perform ignition according to the updated charging time of the ignition coil and the target ignition advance angle, so that the control of each cylinder of the engine is further ensured to be more accurate, and the safety of the engine is further ensured.

In another embodiment of the present application, after determining the updated ignition coil charging time and the updated target ignition advance angle of each cylinder in the second cylinder group according to a plurality of knock signals, the control device further includes a transmitting unit configured such that 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, when 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.

The control device of the engine comprises a processor and a memory, wherein 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 includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one, and the problem of high cost caused by the fact that an electronic control unit with the same pin number as the total cylinder number of the engine is replaced to control the ignition of the engine in the prior art is solved by adjusting kernel parameters.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

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

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 device of an engine for executing any one of the control methods described above.

The vehicle 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 so that the corresponding cylinders are ignited according to the ignition-related parameters in accordance with the ignition sequence of the engine and the ignition-related parameters of the corresponding cylinders. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

The embodiment of the invention provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor realizes at least the following steps when executing the program:

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

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

In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units may be a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

From the above description, it can be seen that the above 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 may be 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 so that the corresponding cylinders are ignited according to the ignition-related parameters in accordance with an ignition sequence of the engine and ignition-related parameters of the corresponding cylinders. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art 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 may be 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 alternately control the cylinders of the corresponding cylinder groups according to an ignition sequence of the engine and ignition-related parameters of the corresponding cylinders, and the first electronic control unit and the second electronic control unit are configured to cause the corresponding cylinders to ignite according to the ignition-related parameters. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

3) The vehicle of the present application 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 so that the corresponding cylinders are ignited according to the ignition-related parameters in accordance with the ignition sequence of the engine and the ignition-related parameters of the corresponding cylinders. Compared with the prior art, when the number of hardware pins of the electronic control unit is smaller than the total number of cylinders of the engine, the control method of the engine is characterized in that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine through the combination of the first electronic control unit and the second electronic control unit, so that the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be replaced, the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine does not need to be newly arranged, and control software corresponding to the electronic control unit does not need to be developed, and the problem of high cost caused by the fact that the engine is controlled by replacing the electronic control unit with the same number of hardware pins as the total number of cylinders of the engine in the prior art is solved.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A control method of an engine, characterized in that a 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, respectively, each of the cylinder groups includes a plurality of cylinders therein, 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 comprising:

the first electronic control unit and the second electronic control unit alternately control the cylinders in the corresponding cylinder groups according to the ignition sequence of the engine and ignition related parameters, such that each cylinder ignites according to the ignition related parameters, including ignition coil charging time and target ignition advance angle.

2. The control method of claim 1, wherein 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 the ignition-related parameters to the cylinders in the corresponding cylinder group in order of ignition of the engine, so that each of the cylinders ignites according to the ignition-related parameters, the control method further includes:

the first electronic control unit receives the knock signals of all cylinders sent by the knock sensor group, and determines 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.

3. The control method according to claim 1, characterized in that 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 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 of the corresponding cylinder group in the order of ignition of the engine, so that each of the cylinders is ignited according to the ignition-related parameters, the control method further comprises:

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

4. The control method according to claim 2, characterized in that after determining the ignition coil charging time and the target ignition advance angle after each cylinder update based on a plurality of the knock signals, the control method further comprises:

the first electronic control unit transmits the updated target spark advance angle and the ignition coil charging time for each of the cylinders 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, respectively a first target pin, a second target pin, a third target pin, and a fourth target pin, the first cylinder group includes a first target cylinder, a second target cylinder, a third target cylinder, and a fourth target cylinder that are sequentially arranged,

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

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

6. The control method according to claim 1, wherein the second electronic control unit has four target pins, namely a fifth target pin, a sixth target pin, a seventh target pin, and an eighth target pin, respectively, the second cylinder group includes fifth, sixth, seventh, and eighth target cylinders arranged in this order,

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

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

7. The control method according to claim 2, wherein the first electronic control unit and the second electronic control unit each operate in an 8-cylinder drive mode.

8. A control method according to claim 3, wherein the first electronic control unit and the second electronic control unit are each 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 in-line 8-cylinder engine.

10. A control device of an engine, characterized in that a 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, respectively, each of the cylinder groups includes a plurality of cylinders therein, the first electronic control unit is electrically connected with the first cylinder group, the second electronic control unit is electrically connected with the second cylinder group, the control device includes:

and a control unit configured to alternately control the cylinders in the corresponding cylinder groups in accordance with an ignition sequence of the engine and ignition-related parameters including an ignition coil charge time and a target ignition advance angle, so that each of the cylinders ignites in accordance with the ignition-related parameters.

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 according to any one of claims 1 to 9.

12. A processor for running a program, wherein the program when run performs the control method of any one of claims 1 to 9.

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