KR970044895A - How to control idle speed of car engine - Google Patents

How to control idle speed of car engine Download PDF

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Publication number
KR970044895A
KR970044895A KR1019950047139A KR19950047139A KR970044895A KR 970044895 A KR970044895 A KR 970044895A KR 1019950047139 A KR1019950047139 A KR 1019950047139A KR 19950047139 A KR19950047139 A KR 19950047139A KR 970044895 A KR970044895 A KR 970044895A
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KR
South Korea
Prior art keywords
idle
speed
smaller
engine
reference value
Prior art date
Application number
KR1019950047139A
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Korean (ko)
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KR100222850B1 (en
Inventor
이태표
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전성원
현대자동차 주식회사
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Priority to KR1019950047139A priority Critical patent/KR100222850B1/en
Publication of KR970044895A publication Critical patent/KR970044895A/en
Application granted granted Critical
Publication of KR100222850B1 publication Critical patent/KR100222850B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/08—Introducing corrections for particular operating conditions for idling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0223—Cooling water temperature

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

이 발명은 전자제어 연료분사 기능을 구비한 자동차 엔진에 적용되는 아이들(Idle) 회전수 제어방법에 관한 것으로서, 수온 센서를 통해 냉각수의 온도를 감지하는 제1단계와; 상기 제1단계에서 감지된 냉각수의 온도로부터, 이에 대응하는 매핑된 아이들 회전수를 엔진에 적용하는 제2단계와; 소정 시간 대기후, 일정시간 동안의 아이들 회전수 변화량을 적분하는 제3단계와; 상기 제3단계에서 계산된 적분치가 기준치(T1)보다 더 작은지를 판단하는 제4단계와; 상기 제4단계에서 적분치가 기준치(T1)보다 더 작을 경우, 현재의 아이들 회전수에 소정 횟수를 더하는 제5단계와; 상기 제4단계에서 적분치가 기준치(T1)보다 더 클 경우, 현재의 아이들 회전수에 소정 횟수를 감산하는 제6단계와; 상기 제5단계 또는 제6단계의 결과로 얻어지는 아이들 회전수가 목표 회전수(N1)보다 작은지를 판단하며, 얻어진 아이들 회전수가 목표 회전수보다 작을 경우에는 동작을 완료하고, 그렇지 않을 경우에는 상기 제3단계로 점프되어 제3단계 이후의 동작이 수행되도록 하는 제7단계로 구성되어, 아이들 제어시 엔진회전수의 변화량을 적분하고 이 적분치를 소정의 기준값과 비교하며, 비교결과에 따라 엔진회전수가 일정횟수 감소 또는 증가되도록 함으로써 엔진회전수의 요동을 없앨 수 있으며, 엔진회전수의 요동을 제거함으로써 안정적인 엔진의 작동을 도모할 수 있다.The present invention relates to an idle speed control method applied to an automobile engine having an electronically controlled fuel injection function, comprising: a first step of sensing a temperature of a coolant through a water temperature sensor; A second step of applying the mapped idle rotation speed to the engine from the temperature of the coolant detected in the first step; A third step of integrating the idle rotation speed change amount for a predetermined time after waiting a predetermined time; A fourth step of determining whether the integrated value calculated in the third step is smaller than the reference value T1; A fifth step of adding a predetermined number of times to the current idle rotation speed when the integral value is smaller than the reference value T1 in the fourth step; A sixth step of subtracting a predetermined number of times of the idle speed when the integral value is larger than the reference value T1 in the fourth step; It is determined whether the idle rotational speed obtained as a result of the fifth step or the sixth step is smaller than the target rotational speed N1, and if the idle rotational speed obtained is smaller than the target rotational speed, the operation is completed; It consists of a seventh step to jump to the step to perform the operation after the third step, integrating the change amount of the engine speed during the idle control and compare the integral value with a predetermined reference value, the engine speed is constant according to the comparison result By reducing or increasing the number of times, fluctuations in the engine speed can be eliminated, and stable engine operation can be achieved by removing the fluctuations in the engine speed.

Description

자동차 엔진의 아이들 회전수 제어방법How to control idle speed of car engine

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

제1도는 이 발명의 실시예에 따른 아이들 회전수 제어방법을 설명하는 순서도이고,1 is a flowchart illustrating a method for controlling idle rotation speed according to an embodiment of the present invention.

제2도는 이 발명에 따른 제어방법이 적용된 시간에 대한 아이들 회전수의 그래프이고,2 is a graph of idle rotation speed versus time to which the control method according to the present invention is applied,

제3도는 종래의 아이들 제어시 냉각수 온도에 대한 아이들 회전수의 그래프이다.3 is a graph of idle rotation speed versus coolant temperature in conventional idle control.

Claims (2)

수온 센서를 통해 냉각수의 온도를 감지하는 제1단계와; 상기 제1단계에서 감지된 냉각수의 온도로부터, 이에 대응하는 매핑된 아이들 회전수를 엔진에 적용하는 제2단계와; 소정 시간 대기후, 일정시간 동안의 아이들 회전수 변화량을 적분하는 제3단계와; 상기 제3단계에서 계산된 적분치가 기준치(T1)보다 더 작은지를 판단하는 제4단계와; 상기 제4단계에서 적분치가 기준치(T1)보다 더 작을 경우, 현재의 아이들 회전수에 소정 횟수를 더하는 제5단계와; 상기 제4단계에서 적분치가 기준치(T1)보다 더 클 경우, 현재의 아이들 회전수에 소정 횟수를 감산하는 제6단계와; 상기 제5단계 또는 제6단계의 결과로 얻어지는 아이들 회전수가 목표 회전수(N1)보다 작은지를 판단하며, 얻어진 아이들 회전수가 목표 회전수보다 작을 경우에는 동작을 완료하고, 그렇지 않을 경우에는 상기 제3단계로 점프되어 제3단계 이후의 동작이 수행되도록 하는 제7단계를 포함하여 이루어지는 것을 특징으로 하는 아이들 회전수 제어방법.A first step of sensing a temperature of the cooling water through a water temperature sensor; A second step of applying the mapped idle rotation speed to the engine from the temperature of the coolant detected in the first step; A third step of integrating the idle rotation speed change amount for a predetermined time after waiting a predetermined time; A fourth step of determining whether the integrated value calculated in the third step is smaller than the reference value T1; A fifth step of adding a predetermined number of times to the current idle rotation speed when the integral value is smaller than the reference value T1 in the fourth step; A sixth step of subtracting a predetermined number of times of the idle speed when the integral value is larger than the reference value T1 in the fourth step; It is determined whether the idle rotational speed obtained as a result of the fifth step or the sixth step is smaller than the target rotational speed N1, and if the idle rotational speed obtained is smaller than the target rotational speed, the operation is completed; And a seventh step of jumping to a step to perform an operation after the third step. 제1항에 있어서, 상기한 아이들 회전수 제어방법은 운전자가 가속페달을 떼어 아이들 스위치가 턴온될때 동작을 개시하도록 구비됨을 특징으로 하는 아이들 회전수 제어방법.The idle rotation speed control method according to claim 1, wherein the idle rotation speed control method is configured to start an operation when the idle switch is turned on by the driver removing the accelerator pedal.
KR1019950047139A 1995-12-06 1995-12-06 Idle rpm control method of vehicle engine KR100222850B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950047139A KR100222850B1 (en) 1995-12-06 1995-12-06 Idle rpm control method of vehicle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950047139A KR100222850B1 (en) 1995-12-06 1995-12-06 Idle rpm control method of vehicle engine

Publications (2)

Publication Number Publication Date
KR970044895A true KR970044895A (en) 1997-07-26
KR100222850B1 KR100222850B1 (en) 1999-12-01

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Application Number Title Priority Date Filing Date
KR1019950047139A KR100222850B1 (en) 1995-12-06 1995-12-06 Idle rpm control method of vehicle engine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160081546A (en) * 2014-12-31 2016-07-08 주식회사 두산 Apparatus and method for controlling idle speed of forklift engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160081546A (en) * 2014-12-31 2016-07-08 주식회사 두산 Apparatus and method for controlling idle speed of forklift engine

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Publication number Publication date
KR100222850B1 (en) 1999-12-01

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