KR970006833A

KR970006833A - Rapid output change control method according to the air-fuel ratio change of the engine

Info

Publication number: KR970006833A
Application number: KR1019950021237A
Authority: KR
Inventors: 이용균
Original assignee: 한승준; 기아자동차 주식회사
Priority date: 1995-07-19
Filing date: 1995-07-19
Publication date: 1997-02-21

Abstract

본 발명은 엔진의 공연비 변화에 따른 급격한 출력변화 제어방법에 관한 것으로서, 흡입공기량 또는 연료분사량의 변화율(△Q_a/△t, △Q_f/△t)이 일정범위(α,β) 이상인가를 판단하는 흡입공기량 또는 연료분사량 판단단계(S1)와; 점화시기를 순간적으로 △T_s만큼 지각시키는 점화시기 지각단계(S2)와; 점화시기를 설정값으로 진각시키는 점화시기 진각단계(S3)로 구성되어, 흡입공기 유동제어 밸브를 작동시키거나, 희박 공연비에서 과농 공연비로 변경했을 경우에 엔진 ECU에 의해 점화 플러그의 점화시기를 순간적으로 지연시켜 엔진출력의 변화가 완만하게 되도록 하여 엔진 출력의 토오크 쇼크를 저감시키므로 차량의 주행 안전성을 향상시킨다.Is The present invention relates to a sudden output change control method according to the air-fuel ratio changes in the engine, the intake air amount or the rate of change of the fuel injection amount _{(△ Q a / △ t,} △ Q f / △ t) is a predetermined range (α, β) over Intake air amount or fuel injection amount determination step (S1) to determine; An ignition timing perception step S2 for retarding the ignition timing by ΔT _s instantaneously; It consists of an ignition timing advance step (S3) which advances the ignition timing to a set value. By delaying the engine power, the change in engine output is smoothed, and the torque shock of the engine output is reduced, thereby improving the driving safety of the vehicle.

Description

Rapid output change control method according to the air-fuel ratio change of the engine

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

제1도는 점화시기에 따른 연소실내의 유효지시압력의 변화를 나타내는 선도, 제3도는 본 발명의 제어 흐름도.1 is a diagram showing a change in the effective indication pressure in the combustion chamber according to the ignition timing, and FIG. 3 is a control flowchart of the present invention.

Claims

An intake air amount or fuel injection amount determination step of determining whether the rate of change of the intake air amount or fuel injection amount is equal to or greater than a predetermined range (α, β); An ignition timing perception step of retarding the ignition timing by ΔT _s momentarily; A method of controlling a sudden power change according to an air-fuel ratio change of an engine, characterized by comprising an ignition timing advancement step of gradually advancing an ignition timing to a set value.

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