KR950029562A - Fuel Control System for CNG Vehicles - Google Patents

Fuel Control System for CNG Vehicles Download PDF

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Publication number
KR950029562A
KR950029562A KR1019940008321A KR19940008321A KR950029562A KR 950029562 A KR950029562 A KR 950029562A KR 1019940008321 A KR1019940008321 A KR 1019940008321A KR 19940008321 A KR19940008321 A KR 19940008321A KR 950029562 A KR950029562 A KR 950029562A
Authority
KR
South Korea
Prior art keywords
fuel
distribution pipe
temperature
pressure
fuel distribution
Prior art date
Application number
KR1019940008321A
Other languages
Korean (ko)
Other versions
KR960003243B1 (en
Inventor
정찬
Original Assignee
김태구
대우자동차 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김태구, 대우자동차 주식회사 filed Critical 김태구
Priority to KR1019940008321A priority Critical patent/KR960003243B1/en
Publication of KR950029562A publication Critical patent/KR950029562A/en
Application granted granted Critical
Publication of KR960003243B1 publication Critical patent/KR960003243B1/en

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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
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/029—Determining density, viscosity, concentration or composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

본 발명은 연료분배관의 내부 온도 및 압력을 측정하고 그 측정된 온도 및 압력에 대해 최적의 연료량을 산출하여 연료분사기의 구동시간을 보정하도록 된 CNG차량의 연료제어장치에 관한 것으로, 연료분배관(12)의 내부 압력과 온도를 검출하기 위한 센서(28, 30)와, 이 압력 및 온도검출센서(28, 30)로부터 검출된 연료분배관(12)의 내부 압력 및 온도검출신호를 디지털변환하는 데이터변환수단(33, 34), 공기량 측정수단(22, 24)으로부터 측정된 공기량을 기초로 연료분사기(14)의 구동시간을 제어하여 최적의 연료분배가 이루어지도록 하는 제어수단(26)을 갖추어 가솔린 엔진방식을 압축천연가스를 주연료로 사용하는 경우에 연료 분배관의 내부 압력 및 온도의 변화에 대해서도 최적의 연료공급량을 확보할 수 있도록 한 것이다.The present invention relates to a fuel control device for a CNG vehicle that measures internal temperature and pressure of a fuel distribution pipe, calculates an optimal amount of fuel for the measured temperature and pressure, and corrects a driving time of the fuel injection device. Digitally convert the internal pressure and temperature detection signals of the sensors 28 and 30 for detecting the internal pressure and temperature of the fuel cell 12 and the fuel distribution pipe 12 detected from the pressure and temperature detection sensors 28 and 30. The control means 26 to control the driving time of the fuel injector 14 on the basis of the amount of air measured from the data conversion means 33, 34 and the air amount measuring means 22, 24 to achieve an optimal fuel distribution. In the case of using compressed natural gas as the main fuel, the optimum fuel supply can be ensured even when the internal pressure and temperature of the fuel distribution pipe are changed.

Description

CNG차량의 연료제어장치Fuel Control System for CNG Vehicles

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

제1도는 일반적인 차량 엔진의 연료제어장치의 구성을 개략적으로 나타낸 모식도, 제2도는 본 발명에 따른 CNG차량의 연료제어장치의 구성을 설명하는 도면이다.FIG. 1 is a schematic diagram schematically showing a configuration of a fuel control device of a general vehicle engine, and FIG. 2 is a view for explaining a configuration of a fuel control device for a CNG vehicle according to the present invention.

Claims (2)

차량 엔진에 연료를 공급하는 연료분배관(12)과 이 연료분배관(12)에 접속되어(16)에 대해 연료를 분사하는 복수의 연료분사기(14), 배터리(18)로부터의 전원에 의해 상기 엔진(16)의 점화를 제어하는 점화스위치(20)를 갖추어 구성된 엔진의 연료분배장치에 있어서, 상기 연료분배관(12)의 내부 압력과 온도를 검출하기 위한 센서(28,30)와, 이 압력 및 온도검출센서(28,30)로부터 검출된 연료분배관(12)의 내부 압력 및 온도검출신호를 디지털변환하는 데이터변환수단(33,34), 공기량 측정수단(22,24)으로부터 측정된 공기량을 기초로 상기 연료분배기(14)의 구동시간을 제어하여 최적의 연료분배가 이루어지도록 하는 제어수단(26)을 갖추어 구성된 것을 특징으로 하는 CNG차량의 연료제어장치.By the power supply from the fuel distribution pipe 12 which supplies fuel to a vehicle engine, the several fuel injection machines 14 which are connected to this fuel distribution pipe 12, and inject fuel with respect to 16, and the battery 18, An engine fuel distribution device comprising an ignition switch 20 for controlling ignition of the engine 16, comprising: sensors 28 and 30 for detecting internal pressure and temperature of the fuel distribution pipe 12; Measured by data conversion means (33, 34) and air quantity measuring means (22, 24) for digitally converting the internal pressure and temperature detection signals of the fuel distribution pipe (12) detected by the pressure and temperature detection sensors (28, 30). And a control means (26) for controlling the driving time of the fuel distributor (14) on the basis of the amount of air supplied to achieve an optimum fuel distribution. 제1항에 있어서, 상기 제어수단(26)은 상기 연료분배관(12)내의 압력 및 온도변화에 따른 연료밀도를 기초로 상기 연료분사기(14)의 구동시간을 가산 또는 감산 제어하도록 된 것을 특징으로 하는 CNG차량의 연료제어장치.The method of claim 1, wherein the control means 26 is to add or subtract the driving time of the fuel injector 14 based on the fuel density according to the pressure and temperature change in the fuel distribution pipe 12. Fuel control device for CNG vehicles. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019940008321A 1994-04-20 1994-04-20 Fuel controller KR960003243B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940008321A KR960003243B1 (en) 1994-04-20 1994-04-20 Fuel controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940008321A KR960003243B1 (en) 1994-04-20 1994-04-20 Fuel controller

Publications (2)

Publication Number Publication Date
KR950029562A true KR950029562A (en) 1995-11-22
KR960003243B1 KR960003243B1 (en) 1996-03-07

Family

ID=19381365

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940008321A KR960003243B1 (en) 1994-04-20 1994-04-20 Fuel controller

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060024580A (en) * 2004-09-14 2006-03-17 르노삼성자동차 주식회사 Liquefied petroleum liquid injection system controled by temperature and pressure and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060024580A (en) * 2004-09-14 2006-03-17 르노삼성자동차 주식회사 Liquefied petroleum liquid injection system controled by temperature and pressure and method thereof

Also Published As

Publication number Publication date
KR960003243B1 (en) 1996-03-07

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