KR970027732A - How to calculate the injection volume when reinjecting fuel - Google Patents

How to calculate the injection volume when reinjecting fuel Download PDF

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Publication number
KR970027732A
KR970027732A KR1019950043939A KR19950043939A KR970027732A KR 970027732 A KR970027732 A KR 970027732A KR 1019950043939 A KR1019950043939 A KR 1019950043939A KR 19950043939 A KR19950043939 A KR 19950043939A KR 970027732 A KR970027732 A KR 970027732A
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South Korea
Prior art keywords
engine speed
value
predetermined value
injection
fuel
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KR1019950043939A
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Korean (ko)
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KR100264553B1 (en
Inventor
김창래
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전성원
현대자동차 주식회사
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Priority to KR1019950043939A priority Critical patent/KR100264553B1/en
Publication of KR970027732A publication Critical patent/KR970027732A/en
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Publication of KR100264553B1 publication Critical patent/KR100264553B1/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
    • F02D41/30—Controlling fuel injection
    • 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
    • F02D31/007—Electric control of rotation speed controlling fuel supply

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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 자동차의 전자제어 연료분사장치에 적용되는 분사량 계산방법에 관한 것으로서, 전자제어유닛의 분사신호로부터 연료 차단상태인지를 판단하는 제1단계와; 상기 제1단계에서 연료 차단상태일 경우, 분사신호로부터 연료 재분사상태인지를 판단하는 제2단계와; 상기 제2단계에서 재분사 상태인 경우, 엔진회전수의 감소량이 소정 값(A)보다 더 작을 경우, 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 큰 지를 판단하는 제4단계와; 상기 제4단계에서 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 작을 경우, 현재의 분사량이 엔진회전수의 변화량과 드로틀 밸브 개도에 대응하는 제1변수(D)와 한 주기 이전의 분사량을 곱하여 얻어진 값으로 결정 되도록 하는 제5단계와; 상기 제3단계에서 엔진회전수 감소량이 소정 값(A)보다 크거나 상기 제4단계에서 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 클 경우, 현재의 분사량이 엔진회전수의 변화량과 드로틀 밸브 개도에 대응하는 제2변수(C)와 한 주기 이전의 분사량을 곱하여 얻어진 값으로 결정되도록 하는 제6단계로 구성되어, 엔진회전수의 급격한 감소시에도 엔진 정지현상이 발생하는 것을 방지할 수 있고, 운전자의 가속의지에 따라 분사량이 결정되도록 함으로써 운전성을 향상시킬 수 있다.The present invention relates to a method for calculating an injection amount applied to an electronically controlled fuel injection device of a vehicle, comprising: a first step of determining whether a fuel is shut off from an injection signal of an electronic control unit; A second step of determining whether the fuel is re-injected from the injection signal when the fuel is shut off in the first step; A fourth step of determining whether a value of the throttle valve position sensor is larger than a predetermined value (B) when the reduction amount of the engine speed is smaller than the predetermined value (A) when the re-injection state is in the second step; When the value of the throttle valve position sensor is less than the predetermined value (B) in the fourth step, the current injection amount is the first variable (D) corresponding to the change amount of the engine speed and the throttle valve opening degree, and the injection amount before the one cycle A fifth step of determining the value obtained by the multiplication; When the engine speed reduction amount is greater than the predetermined value A in the third step or the value of the throttle valve position sensor is larger than the predetermined value B in the fourth step, the current injection amount and the throttle of the engine speed It is composed of a sixth step to determine the value obtained by multiplying the second variable (C) corresponding to the valve opening degree and the injection amount before one cycle, it is possible to prevent the engine stop phenomenon occurs even when the engine speed suddenly decreases. In addition, the driving ability can be improved by determining the injection amount according to the driver's acceleration will.

Description

연료 재분사시 분사량 계산방법How to calculate the injection volume when reinjecting fuel

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 이 발명의 실시예에 따른 연료 재분사시 분사량 계산방법을 설명하는 순서도이다.1 is a flowchart illustrating a method for calculating injection amount upon re-injection of fuel according to an embodiment of the present invention.

Claims (2)

전자제어유닛의 분사신호로부터 연료 차단상태인지를 판단하는 제1단계와; 상기 제1단계에서 연료 차단상태일 경우, 분사신호로부터 연료 재분사상태인지를 판단하는 제2단계와; 상기 제2단계에서 재분사 상태인 경우, 엔진회전수의 감소량이 소정 값(A)보다 더 큰지를 판단하는 제3단계와; 상기 제3단계에서 엔진회전수의 감소량이 소정 값(A)보다 더 작을 경우, 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 큰 지를 판단하는 제4단계와; 상기 제4단계에서 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 작을 경우, 현재의 분사량이 엔진회전수의 변화량과 드로틀 밸브 개도에 대응하는 제1변수(D)와 한 주기 이전의 분사량을 곱하여 얻어진 값으로 결정 되도록 하는 제5단계와; 상기 제3단계에서 엔진회전수 감소량이 소정 값(A)보다 크거나 상기 제4단게에서 드로틀 밸브 위치 센서의 값이 소정 값(B) 보다 클 경우, 현재의 분사량이 엔진회전수의 변화량과 드로틀 밸브 개도에 대응하는 제2변수(C)와 한 주기 이전의 분사량을 곱하여 얻어진 값으로 결정되도록 하는 제6단계를 포함하여 이루어지는 것을 특징으로 하는 연료 재분사시 분사량 계산방법.A first step of determining whether the fuel is shut off from the injection signal of the electronic control unit; A second step of determining whether the fuel is re-injected from the injection signal when the fuel is shut off in the first step; A third step of determining whether the reduction amount of the engine speed is greater than a predetermined value (A) in the re-injection state in the second step; A fourth step of determining whether a value of the throttle valve position sensor is larger than a predetermined value (B) when the reduction amount of the engine speed is smaller than a predetermined value (A) in the third step; When the value of the throttle valve position sensor is less than the predetermined value (B) in the fourth step, the current injection amount is the first variable (D) corresponding to the change amount of the engine speed and the throttle valve opening degree, and the injection amount before the one cycle A fifth step of determining the value obtained by the multiplication; If the engine speed reduction amount is greater than a predetermined value A in the third step or the value of the throttle valve position sensor is larger than the predetermined value B in the fourth step, the current injection amount and the throttle of the engine speed And a sixth step of determining the value obtained by multiplying the second variable (C) corresponding to the valve opening degree by the injection amount before one cycle. 제1항에 있어서, 상기 제1단계에서 제6단계까지의 과정은 소정 시간의 주기로 반복 수행되며, 그 때마다 상기 제1변수(D)와 제2변수(D)는 그 시점의 엔진회전수의 변화량과 드로틀 밸브 개도에 대응하여 결정되는 것을 특징으로 하는 연료 재분사시 분사량 계산방법.The method of claim 1, wherein the first to sixth steps are repeated at predetermined time intervals, and each time the first variable D and the second variable D are the engine speed at that time. Method for calculating the injection amount during the re-injection of fuel, characterized in that determined in accordance with the change amount of the throttle valve opening degree. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950043939A 1995-11-27 1995-11-27 Injection rate calculation method during fuel reinjecting KR100264553B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950043939A KR100264553B1 (en) 1995-11-27 1995-11-27 Injection rate calculation method during fuel reinjecting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950043939A KR100264553B1 (en) 1995-11-27 1995-11-27 Injection rate calculation method during fuel reinjecting

Publications (2)

Publication Number Publication Date
KR970027732A true KR970027732A (en) 1997-06-24
KR100264553B1 KR100264553B1 (en) 2000-10-02

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KR1019950043939A KR100264553B1 (en) 1995-11-27 1995-11-27 Injection rate calculation method during fuel reinjecting

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