KR970044347A

KR970044347A - Fault diagnosis system using gas emission system of automobile

Info

Publication number: KR970044347A
Application number: KR1019950057751A
Authority: KR
Inventors: 변성광
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-12-27
Filing date: 1995-12-27
Publication date: 1997-07-26

Abstract

본 발명은 자동차에 관한 것으로, 엔진의 연료연소에 의해 발생된 가스를 배출하는 가스배출 계통을 체크하여 흡기 매니폴드와 캐니스터의 이상여부를 진단하는 고장진단 시스템에 관한 것이다. 종래의 자동차에는 흡기 매니폴드와 캐니스터의 상태를 점검하여 주는 기능을 구비하고 있지 않아, 흡기 매니폴드와 캐니스터의 상태를 점검하기 위해서는 자동차 정비공장에 의뢰하여 점검 하였으나 운전자의 입장에서 해당 항목을 수시로 점검할 수 없어 엔진을 효율적으로 가동할수 없게 되는 문제점이 있었다. 본 발명은 엔진의 연료 연소에 의해 발생된 가스를 배출하는 가스배출 계통을 체크하여 흡기 매니폴드와 캐니스터의 이상 여부를 용이하게 진단할 수 있게하여 운전자가 대응되는 조치를 취하게 함으로써 엔진을 효율성 있게 가동할 수 있다.The present invention relates to a motor vehicle, and to a failure diagnosis system for diagnosing abnormality of an intake manifold and a canister by checking a gas discharge system for discharging gas generated by fuel combustion of an engine. Conventional cars do not have a function to check the condition of the intake manifold and canister, and in order to check the condition of the intake manifold and canister, it was requested by the car repair shop. There was a problem that the engine can not be efficiently operated. The present invention makes it possible to easily diagnose the abnormality of the intake manifold and the canister by checking the gas discharge system for discharging the gas generated by the fuel combustion of the engine so that the driver can take a corresponding action to efficiently operate the engine. Can be operated.

Description

Fault diagnosis system using gas emission system of automobile

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

제1도는 본 발명에 따른 고장진단 시스템의 구성도.1 is a block diagram of a failure diagnosis system according to the present invention.

제2도는 제1도에 도시된 고장진단 시스템의 동작 흐름도.2 is an operation flowchart of the failure diagnosis system shown in FIG.

Claims

A display panel 11 for displaying the diagnosis result information visually; RPM sensor 12 for sensing the rotational speed of the engine and outputs the detection information; A check valve 18 for passing exhaust gas discharged from the engine 23 through the exhaust manifold 22 through the connecting pipe 24; A solenoid valve 21 for passing exhaust gas introduced through the connecting pipe 24 to the canister 13 via the connecting pipe 25; A canister (13) performing a function of purifying exhaust gas introduced through the connection pipe (25); A vacuum pump 14 connected to the connection pipe 25 to discharge the air to the outside to make the connection pipe 25 vacuum; In a vehicle having a check valve 17 for passing the boil-off gas of the fuel flowing through the connecting pipe 26 toward the canister 13, sensing the pressure of the connection 24 and outputting sensing information. A pressure gauge 19; A hydrogen pressure sensor 20 for sensing hydrogen pressure in the connection pipe 25 and outputting sensing information; The sensor 23 reads sensing information applied from the pressure gauge 19 and the hydrogen pressure sensor 20 while the engine 23 is in operation to determine whether the vacuum in the connecting pipes 24 and 25 is normal. When it is confirmed that the vacuum state in the connection pipes 24 and 25 is abnormal, if the vacuum in the connection pipes 24 and 25 is 0, the display panel 11 is controlled to have an abnormality in the intake manifold. If it is displayed to visually confirm, and if the vacuum state in the connecting pipe (24, 25) is confirmed that the abnormal RPM of the engine 23 detected through the RPM sensor 12 is detected And a ECU (10) controlling the display panel (11) to display information indicating that there is an error in the canister (13) or the canister line.