KR940015200A - Learning control device of internal combustion engine and its method - Google Patents

Abstract

To perform a learning correction operation on the entire operating region of the internal combustion engine so that other control operations can be accurately performed according to the operating characteristics of the internal combustion engine to realize complete combustion of fuel; First to third sensing units for detecting the concentration of oxygen contained in the exhaust gas discharged to the exhaust pipe, the number of revolutions of the engine, and the degree of opening of the throttle valve, respectively, and outputting a corresponding electric signal; Connected to the sensing unit, when the internal combustion engine is in a normal state, the corresponding learning area is determined by using the integral gain value, and the learning value is corrected by using a given arithmetic expression according to the corresponding learning area. When the operation state is not normal, the corresponding learning area is determined by using proportional gain, the learning value is corrected by using the given arithmetic expression according to the corresponding learning area, and the corrected learning value is stored as the current learning value. The present invention relates to a learning control device for an internal combustion engine and a method thereof.

Description

Learning control device of internal combustion engine and its method

Since this is an open matter, no full text was included.

1 is a block diagram of a learning control apparatus of an internal combustion engine according to an embodiment of the present invention, and FIG. 2 is an operation flowchart of a learning control method of an internal combustion engine according to an embodiment of the present invention.

Claims (5)

First to third sensing units for detecting the concentration of oxygen contained in the exhaust gas discharged to the exhaust pipe, the number of revolutions of the engine, and the degree of opening of the throttle valve, respectively, and outputting a corresponding electric signal; When the internal combustion engine is in a normal state connected to the sensing unit, the corresponding learning area is determined by using the integral gain (K _I ) value, and the learning value is corrected by using a given calculation equation according to the corresponding learning area. When the internal combustion engine is not in a normal state, the corresponding learning area is determined by using proportional gain (K _P ), and the learning value is corrected by using a given equation according to the corresponding learning area. A learning control device of an internal combustion engine, comprising an engine control unit for storing a learning value as a current learning value. In the learning correction method including the sensing unit 1 and the engine control unit 2, the state of the internal combustion engine is determined by using the signal of the sensing unit 1, and when the state of the internal combustion engine is in a normal state, the learning in all states is performed. It is determined whether the correction operation is completed. If the operation is not completed, the learning correction operation is stopped. When the correction operation of the previous state is completed or stopped, the integral gain (K _I ) value is compared with the set value and judged. The corresponding learning area is determined according to the result, the learning area correction value is corrected according to the determined learning area, and when the state of the vehicle is not normal, the operation is completed by determining whether the previous state and the learning correction operation are completed. If not, stop the calibration operation.When the calibration operation is completed or stopped, compare the proportional gain (K _P ) value with the set value, and according to the comparison result And determining a corresponding learning area, correcting the learning area correction value according to the determined learning area, and storing the corrected learning value as the current learning value. The method of claim 2, wherein the method for determining the learning area is determined according to the rotational speed of the engine and the load size of the engine when the internal combustion engine is in a normal state, and when the internal combustion engine is not in a normal state. Learning control method of the internal combustion engine, characterized in that determined by the rotational speed and the degree of opening of the throttle valve. The method of claim 2, wherein the method for correcting the learning area comprises reducing the learning value when the gain value is smaller than the set value, and weighting the learning value when the gain value is larger than the set value. Internal combustion engine learning control method. 5. The method of claim 2, wherein the method of correcting the learning area includes a constant α value that controls not only the learning correction width LAN but also the learning width degree in the learning value K _LRN (n−1) of the entire state. Learning control method of the internal combustion engine, characterized in that consisting of a method of adding and subtracting values. ※ Note: The disclosure is based on the initial application.