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KR900700745A - 입력-제어 연료 분사 시스템의 대기압 측정방법 - Google Patents

입력-제어 연료 분사 시스템의 대기압 측정방법

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Publication number
KR900700745A
KR900700745A KR1019890702498A KR890702498A KR900700745A KR 900700745 A KR900700745 A KR 900700745A KR 1019890702498 A KR1019890702498 A KR 1019890702498A KR 890702498 A KR890702498 A KR 890702498A KR 900700745 A KR900700745 A KR 900700745A
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KR
South Korea
Prior art keywords
pressure
measured
atmospheric pressure
predetermined
established
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Application number
KR1019890702498A
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English (en)
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KR0121786B1 (ko
Inventor
슈나이벨 에베르하르트
융인게르 에리히
히르슈만 글라우스
Original Assignee
랄프 홀리 베렌스, 게오르그 뮐러
로베르트 보쉬 게엠베하
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Application filed by 랄프 홀리 베렌스, 게오르그 뮐러, 로베르트 보쉬 게엠베하 filed Critical 랄프 홀리 베렌스, 게오르그 뮐러
Publication of KR900700745A publication Critical patent/KR900700745A/ko
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Publication of KR0121786B1 publication Critical patent/KR0121786B1/ko
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Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28—Interface circuits
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
    • F02D2200/703—Atmospheric pressure
    • F02D2200/704—Estimation of atmospheric pressure

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

내용 없음

Description

입력-제어 연료 분사 시스템의 대기압 측정방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
본 발명은 단일예로, 첨부한 도면을 참고하여 후술되며, 즉 제1도, 제2도, 제3도는 본 발명을 설명하는데 사용된 드로틀각(α)에 대응하는 엔진속도(N)의 곡선을 도시한 것이다.

Claims (8)

  1. 압력 제어 분사 시스템의 유료 대압 측정 방법에 있어서, 엔진이 예정된 부하 상태에서 혹은 그 이상에서, 작동하는지를 탐지하고, 그 상태에서의 유효 흡입 매니폴트압력(ps)을 측정하고, 예정된 수 인자(K)를 측정된 흡입 매니폴드 압력 (po)에 곱하여 대기압을 나타내는 압력 값(po)를 제공하는 것을 특징으로 하는 방법.
  2. 제1항에 있어서, 상기 예정된 부하는 측정된 매니폴드 압력이 실제 대기압의 예정된 비율(Q)인 미리 확립한 상태와 일치하는 것을 특징으로 하는 방법.
  3. 제1항 또는 제2항에 있어서, 측정된 드로틀 밸브각과 엔진 속도의 비율을 감시하고 저장된 값과 비교하여 상기 예정 부하 상태 도달 혹은 초과를 확립하는 것을 특징으로 하는 방법.
  4. 제1항 또는 제2항에 있어서, 복수개의 주어진 엔진속도(N)에서 측정된 매니폴드 압력이 실제 대기압의 예정된 고정비(Q)인 상태가 되는 조건을 성취하는데 필요한 각 드로틀 밸브 개방각(α)의 엔진 특정 특성곡선이 미리 확립되어 있고 상기 에정된 부하 상태의 존재는 곡선이 차량 작동동안 상승하면 확립되고 이때 유효흡입 매니폴드 압력은 상기 인자가 곱해져 유효 대기압을 나타내는 압력 값(Po)을 산출하는 것을 특징으로 하는 방법.
  5. 제1항에 있어서. 복수개의 주어진 엔진 속도(N)에서 측정 매니폴드 압력이 실제 대기압의 각 고정된비율(Q)인 상태가 되는 조건을 성취하는데 필요한 드로틀 밸브 개방박(α)과 일치하는 각 곡선은 차량 작동중에 다른 비율(Q)을 기초로 한 복수개의 엔진 특성 곡선이 미리 확립되어 있고, 대기압은 엔진 속도의 유효값과 드로틀 밸브각에 의해 측정된 작동점에 가장 가깝게 배치한 곡선과 일치하는 인자와 측정된 흡입 매니폴드 압력을 곱해서 측정되는 것을 특징으로 하는 방법.
  6. 제5항에 있어서, 상기 부하 상태가 주어진 엔진 속도(nact)에서 초과되는 경우에는, 임계속도(ncrit)는 유효 드로틀 각이 특성 곡선과 교차하는 곳에서 확립되고 인자 K는 보정되어 식는 상수에 따라서 수정인자 Ks를 제공하며, 측정된 흡입 매니폴드 압력은 인자 Ks와 곱해져 대기압을 확립하는 것을 특징으로 하는 방법.
  7. 제2항 내지 제6항중 어느 한항에 있어서, 상기 인자 K가 1.053과 1.010사이에 놓이도록 상기 예정된 비율을 95내지 99% 사이에 놓는것을 특징으로 하는 방법.
  8. 제1항 또는 제2항에 있어서, 상기 예정된 부하 상태의 탐지는 "전부하"상태가 얻어질때 작동되는 종래의 전부하 스위치를 사용하여 성취되는 것을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890702498A 1988-05-05 1988-05-05 압력-제어 연료 분사 시스템의 대기압 측정방법 Expired - Fee Related KR0121786B1 (ko)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1988/000377 WO1989011033A1 (en) 1988-05-05 1988-05-05 Method for determining atmospheric air pressure in pressure-controlled fuel injection systems

Publications (2)

Publication Number Publication Date
KR900700745A true KR900700745A (ko) 1990-08-16
KR0121786B1 KR0121786B1 (ko) 1997-11-24

Family

ID=8165273

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890702498A Expired - Fee Related KR0121786B1 (ko) 1988-05-05 1988-05-05 압력-제어 연료 분사 시스템의 대기압 측정방법

Country Status (6)

Country Link
US (1) US5020363A (ko)
EP (1) EP0366671B1 (ko)
JP (1) JP2690341B2 (ko)
KR (1) KR0121786B1 (ko)
DE (1) DE3873921T2 (ko)
WO (1) WO1989011033A1 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2784460B1 (fr) * 1998-10-09 2000-12-15 Renault Vehicules Ind Procede de determination de la pression atmospherique
DE19937154B4 (de) * 1999-08-06 2008-04-30 Robert Bosch Gmbh Verfahren zur saugrohrdruckgeführten geodätische Höhenerkennung bei einem Kraftfahrzeug
US6430515B1 (en) * 1999-09-20 2002-08-06 Daimlerchrysler Corporation Method of determining barometric pressure for use in an internal combustion engine
US6366847B1 (en) 2000-08-29 2002-04-02 Ford Global Technologies, Inc. Method of estimating barometric pressure in an engine control system
US6390055B1 (en) 2000-08-29 2002-05-21 Ford Global Technologies, Inc. Engine mode control
US7031823B2 (en) * 2003-02-14 2006-04-18 Optimum Power Technology L.P. Signal conditioner and user interface
US6884176B2 (en) * 2003-05-22 2005-04-26 Enkotech A/S Securing holding jaws on a tool ring for a nail machine
US9261432B2 (en) 2013-07-25 2016-02-16 Ford Global Technologies, Llc Barometric pressure inference based on tire pressure
US9810171B2 (en) * 2013-12-03 2017-11-07 Ford Global Technologies, Llc Method for determining an offset of a manifold pressure sensor
FR3128490A1 (fr) * 2021-10-27 2023-04-28 Vitesco Technologies Procédé d’estimation de la pression atmosphérique pour un moteur à combustion interne
CN115163301B (zh) * 2022-05-30 2023-10-31 东风柳州汽车有限公司 行车环境大气压力监测方法、装置、设备及存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865950A (ja) * 1981-10-14 1983-04-19 Nippon Denso Co Ltd 内燃機関の制御方法
JPS59188530A (ja) * 1983-04-08 1984-10-25 Isuzu Motors Ltd 内燃エンジン用大気圧測定装置
US4600993A (en) * 1983-05-27 1986-07-15 Allied Corporation Measuring barometric pressure with a manifold pressure sensor in a microprocessor based engine control system
GB2144540B (en) * 1983-08-05 1987-07-22 Austin Rover Group Control system for air/fuel ratio adjustment
US4926335A (en) * 1988-07-25 1990-05-15 General Motors Corporation Determining barometric pressure using a manifold pressure sensor

Also Published As

Publication number Publication date
DE3873921D1 (de) 1992-09-24
DE3873921T2 (de) 1993-03-04
EP0366671B1 (en) 1992-08-19
JP2690341B2 (ja) 1997-12-10
KR0121786B1 (ko) 1997-11-24
US5020363A (en) 1991-06-04
WO1989011033A1 (en) 1989-11-16
JPH03501401A (ja) 1991-03-28
EP0366671A1 (en) 1990-05-09

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