KR950025243A

KR950025243A - Engine control unit

Info

Publication number: KR950025243A
Application number: KR1019950003495A
Authority: KR
Inventors: 나오끼 도미사와; 시게오 오오꾸마
Original assignee: 야스모로 도시오; 가부시끼가이샤 유니시아 젝스
Priority date: 1994-02-23
Filing date: 1995-02-23
Publication date: 1995-09-15
Also published as: JPH07233717A; KR100196755B1; JP2855403B2

Abstract

본 발명은 캠의 절환 제어시에 실제 사용 캠에 적합한 점화 시기로 점화 제어를 행할 수 있게 하는 것을 목적으로 하며, 저속용 캠으로부터 고속용 캠으로의 절환, 혹은 고속용 캠으로부터 저속용 캠으로의 절환 지령이 출력된 후에(S3, S6), 엔진 흡입 공기량의 변화율을 감시한다. 그리고, 상기 절환 지령출력 후에 엔진 흡입 공기량이 소정 이상의 변화율을 나타낸 시점을(S4, S7), 실제로 캠 절환이 행해진 타이밍이라고 판단하여 상기 타이밍에서 점화 시기 맵의 절환 제어(S5, S8)을 행하게 한다.An object of the present invention is to enable ignition control at an ignition timing suitable for actual use cams during cam switching control, and to switch from a low speed cam to a high speed cam, or from a high speed cam to a low speed cam. After the switching command is output (S3, S6), the rate of change of the engine intake air amount is monitored. Then, the timing at which the engine intake air amount shows a predetermined or more change rate after the switching command output (S4, S7) is determined as the timing at which the cam switching is actually performed, and the switching control (S5, S8) of the ignition timing map is performed at the timing. .

Description

Engine control unit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 구성을 도시하는 블럭도,1 is a block diagram showing the configuration of the present invention;

제2도는 본 발명의 일실시예를 도시하는 시스템 블럭도,2 is a system block diagram showing one embodiment of the present invention;

제3도는 상기 실시예의 가변 밸브 기구를 도시하는 도면,3 shows a variable valve mechanism of the embodiment;

제4도는 상기 실시예의 가변 밸브 기구를 도시하는 도면으로 제3도의 IV-IV선 단면도.4 is a cross-sectional view taken along the line IV-IV of FIG. 3, showing the variable valve mechanism of the embodiment.

Claims

An opening characteristic switching means capable of switching the valve opening characteristic of the engine to a plurality of preset types, and a switching command output means for outputting a switching instruction of the valve opening characteristic to the valve opening characteristic switching means in accordance with the operating conditions; An engine control device comprising: an intake air amount detection means for detecting an intake air amount of an engine, and a timing at which the valve opening characteristic is actually switched at a time when the intake air amount detected by the intake air amount detection means after the switching command shows a change rate of a predetermined value or more; An engine control value switching means for switching the engine control value set for each valve opening characteristic in advance based on the switching timing determined by the switching timing determination means. controller.

The valve according to claim 1, wherein the switching timing determination means sets a reference change rate of the intake air amount according to the valve opening characteristic before and after switching, and compares the change rate of the intake air amount detected by the reference air change rate with the intake air amount detection means. The engine control device characterized by determining the timing with which the open characteristic was switched.

The engine control device according to claim 1 or 2, wherein the engine control value switched by the engine control value switching means is an ignition timing preset for each valve opening characteristic.

※ Note: The disclosure is based on the initial application.