KR19980076249A - Multi-engine control unit capable of sequential / group injection - Google Patents

Abstract

The present invention controls the mixer supply means in a vehicle having a plurality of cylinders and connected to each cylinder one-to-one and provided with mixer supply means for supplying the mixer to each cylinder at an arbitrary time point according to an input control signal. In particular, the control device is divided into a data storage area, non-storage control data according to the sequential injection method is stored in any of the divided areas and the control data according to the group injection method in another specific area Volatile memory means, mode selection means for setting a sequential injection or group injection method, mixer supply control means for controlling a predetermined number of mixer supply means among the mixer supply means in accordance with an input information signal, and the mode selection Receiving the mode signal selected and generated by the means Access to the data stored in a specific memory area of the sex memory means and directly control a predetermined number of mixer supply means of the mixer supply means in accordance with the accessed data and the information necessary for the control of the remaining mixer supply means is the mixer supply control It relates to a multi-engine control unit capable of sequential / group injection comprising a control unit provided to the means.

Description

Multi-engine control unit capable of sequential / group injection

The present invention relates to an electronic control device for the engine, and in particular, to control the operation of a sequential injection or group injection during the four stroke stroke of a multi-cylinder engine cylinder by a dip switch. The present invention relates to a multi-engine control apparatus capable of sequential / group injection.

In general, the mixer supplied to the gasoline engine has to perform high-precision control in order to satisfy various requirements such as purification of exhaust gas, reduction of fuel consumption, and output improvement.

In order to perform such a control, a method recently proposed is a computer control method as shown in FIG. 1 attached. Details of operations of each illustrated configuration are conventional in the art, and detailed descriptions thereof will be provided. If omitted, the operation is briefly described as follows.

When the computer control method shown in Fig. 1 is largely divided, it is divided into injection timing control and injection amount control. The injection amount control generates a rotational signal based on the signal of the ignition coil, and makes a basic injection signal by using this signal and the intake air amount signal. . In addition, correction shown in the attached Figs. 2A to 2E is performed from the signal from each sensor.

At this time, the correction according to the correction graph shown in FIGS. 2A to 2E is performed by the microcomputer, which is the correction calculating unit.

In addition, in the case of a vehicle having a multi-cylinder engine cylinder, in order to efficiently transmit the engine motion to each wheel power, each cylinder has a slight difference in the order of four strokes. The method of controlling the operation according to the stroke is a method of controlling the suction stroke for the mixer suction.

As described above, the method of controlling the suction stroke is largely divided into sequential injection and group injection. Sequential injection is also called sequential injection. It refers to a system that performs fuel injection in accordance with the suction stroke of a cylinder (synchronized).

In addition, group injection generally refers to an injection method in which engines are injected for each group by grouping cylinders whose intake strokes are adjacent to each other in a gasoline injection of six or more cylinders.

In this case, each of the above-described injection method has different characteristics and advantages, and is applied differently according to the vehicle type, and the control device for controlling the same applies the configuration of FIG. 1 as it is.

Therefore, a slight deformation (change of data stored in the EEPROM) is inevitable depending on the injection method applied to the control device having the same configuration according to the vehicle type, which has a large delay in the production process of the vehicle, and moreover, the same vehicle type Even if the injection method is different, there is a problem that the control device provided in the other vehicle can not be used as it is.

An object of the present invention for solving the above problems is to easily switch the operation of the sequential injection or group injection during the injection of the mixer according to the intake stroke of the four-cylinder engine cylinder through the operation of the dip switch, etc. It is to provide a multi-engine control device capable of sequential / group injection for controlling.

1 is an exemplary configuration of an engine control apparatus according to a general computer control method

2A is a graph of correction data for correcting injection characteristics at start-up

2B is a graph of correction data for correcting an increase characteristic after starting

2C is a graph of correction data for correcting an increase in turbulence characteristics

Fig. 2D is a graph of correction data for correcting acceleration increase characteristics in turbulence

2E is a graph of correction data for correcting the intake air temperature correction characteristic

3 is an exemplary configuration diagram for explaining the concept of a sequential / group injection capable multi-engine control apparatus according to the present invention;

Explanation of symbols for main parts of the drawings

DSW: Dip Switch 10: Computer

20: memory 30: remote module

Features of the present invention for achieving the above object, is provided with a plurality of cylinders are connected to each cylinder one-to-one, and the mixer supply means for supplying the mixer to each cylinder at any time in accordance with the input control signal In a control device for controlling the mixer supply means in a vehicle, a data storage area is divided and stores control data according to a sequential injection method in an arbitrary area of the divided areas and a group injection method in another specific area. Non-volatile memory means for storing control data, mode selection means for setting a sequential injection or group injection method, and a mixer supply for controlling a predetermined number of mixer supply means of the mixer supply means in accordance with the input information signal A mode scene selected and generated by the control means and the mode selection means Accesses data stored in a specific memory area of the nonvolatile memory means and directly controls a predetermined number of mixer supply means from among the mixer supply means according to the accessed data and controls the remaining mixer supply means. It includes a control unit provided to the mixer supply control means.

An additional feature of the present invention for achieving the above object is to directly control the mixer supply control means corresponding to the first cylinder and the third cylinder when the number of cylinders is four.

An additional feature of the present invention for achieving the above object is that when the sequential injection mode is selected in the mode selection means in the state where the number of cylinders is 4, the mixer supply control means of each cylinder is once every 180 ° of piston rotation angle in the cylinder. It is in sequential operation.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is an exemplary configuration diagram of a multi-engine control device capable of sequentially / group injection according to the present invention.

In the engine control apparatus according to the present invention shown in FIG. 3, the data storage area is divided, and the control data according to the sequential injection method is stored in any of the divided areas, and the control according to the group injection method in another specific area. A memory 20 storing data, a dip switch (not shown) (DSW) for setting a sequential injection or group injection method by an inspector or a maker, and a signal generated by the dip switch DSW In response to the state of the sequential injection or group injection method stored in the memory 20 to access the corresponding data to directly control the first and third injection corresponding to each cylinder and to the second and fourth injection The computer 10 outputting the remote control signal and the remote control signals for the second and fourth injections generated by the computer 10 are input to receive the second and fourth injections. Consists of a remote module 30 for controlling.

Referring to the preferred operation of the sequential / group injection capable multi-engine control apparatus according to the present invention configured as described above are as follows.

First, Fig. 3 is a configuration example for controlling the mixer injection operation in a vehicle having four cylinders.

At the production stage of the vehicle, the inspector or the manufacturer sets the sequential injection or group injection method by operating a dip switch (DSW) not shown.

In this case, the memory area of the EEPROM, which is a nonvolatile memory device, is divided into two areas. For example, in the area A, control data according to the sequential injection method is stored, and in the area B, a group injection method is used. Control data is stored.

The computer 10 accesses the control data according to the sequential injection method from the memory 20 when the state of the signal output from the dip switch DSW is a first logic state (for example, a high state). When the state of the signal output from the dip switch DSW is a second logic state (eg, a low state), control data according to the group injection method is accessed from the memory 20.

Subsequently, in the case of the sequential injection method, the computer 10 sequentially controls the in-cylinder piston rotation angle once every 180 ° in order of first injection → third injection → fourth injection → second injection to inject the mixer.

In this case, the computer 10 directly controls the first injection and the third injection, and controls the fourth injection and the second injection through the remote module 30.

On the other hand, in the group injection method, the control unit 10 controls the first injection and the third injection to be controlled at the same time, and the remote module 30 to the fourth injection and the second after a predetermined time interval. Provides information to run injection simultaneously.

Accordingly, the remote module 30 controls the fourth injection and the second injection connected to the remote module 30 according to the input information.

By providing a sequential / group injection capable multi-engine control apparatus according to the present invention operating as described above, a problem caused in the prior art, that is, a control device having the same configuration according to the vehicle type, depending on the injection method applied to the vehicle type Modifications (changes in the data stored in the EEPROM) are inevitable, which causes a lot of delay in the production process of the vehicle. Moreover, even in the same vehicle type, if the injection method is different, the control device provided in other vehicles cannot be used as it is. There is an effect that can be eliminated.

Claims (3)

A control device for controlling the mixer supply means in a vehicle having a plurality of cylinders and connected to each cylinder one-to-one and equipped with mixer supply means for supplying a mixer to each cylinder at any time in accordance with an input control signal. To Non-volatile memory means for storing control data according to the sequential injection method in any of divided areas, and storing the control data according to the group injection method in another specific area; Mode selection means for setting a sequential or group injection method; Mixer supply control means for controlling a predetermined number of mixer supply means from among said mixer supply means in accordance with an input information signal; And The mode signal generated by the mode selection means is input to access data stored in a specific memory area of the nonvolatile memory means, and a predetermined number of mixer supply means of the mixer supply means are directly connected according to the accessed data. And a controller for controlling and supplying the information necessary for the control of the remaining mixer supply means to the mixer supply control means. The multi-engine control apparatus as claimed in claim 1, wherein when the number of cylinders is 4, the mixer supply control means corresponding to the first cylinder and the third cylinder is controlled directly by the controller. The method of claim 1, wherein when the sequential injection mode is selected by the mode selection means in a state where the number of cylinders is 4, the mixer supply control means of each cylinder is operated sequentially once every 180 ° of the piston rotation angle in the cylinder. Multi-engine control unit capable of sequential / group injection.