[특허]System for controlling a valve mechanism for an internal combustion engine

System for controlling a valve mechanism for an internal combustion engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00
출원번호	US-0063021 (1993-05-17)
우선권정보	JP-0042672 U (1992-05-27); JP-0161977 (1992-05-27)
발명자 / 주소	Watanabe Kenzo (Fuchu JPX)
출원인 / 주소	Fuji Jukogyo Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 80 인용 특허 : 0

초록 ▼

A system for controlling a valve mechanism for an internal combustion engine has a valve timing device for changing the valve timing of an exhaust valve of the engine, and a changing device for changing the opening duration of an intake valve of the engine. A detector is provided for detecting a cold engine state and for producing a cold engine signal. In response to the cold engine signal the valve timing device operates to advance the opening timing of the exhaust valve and to reduce the opening duration of the intake valve.

대표청구항 ▼

A valve timing control system of an engine having an intake valve mounted on a cylinder head for controlling an amount of intake air into a cylinder, an exhaust valve mounted on said cylinder head for controlling an amount of exhaust gas from said cylinder, an intake cam driven by an intake camshaft for urging said intake valve, an exhaust valve cam connected to an exhaust cam shaft for pushing said exhaust valve, variable means interposed between said valves and said cams for changing an open and close timing thereof, a throttle valve interposed between an injector and said cylinder for controlling power of said engine, an engine speed sensor for detecting an engine speed and for producing an engine speed signal, a coolant temperature sensor for detecting a temperature of said engine and for producing a temperature signal, a throttle position sensor for detecting an opening degree of said throttle valve and for producing a throttle signal, an air flow meter inserted in an intake passage for detecting an air flow induced into said cylinder and for producing an air flow signal, and an exhaust gas temperature sensor provided in a catalyst for detecting an exhaust gas temperature and for producing an exhaust gas temperature signal, the improvement of the system which comprises: judging means responsive to said speed signal and said temperature signal for determining whether said engine is in a cold state and for generating a state signal when an engine temperature of said engine is lower than a predetermined value; engine operating condition determining means responsive to said speed, said temperature, said throttle and said air flow signals for deciding an engine operating condition and for generating an engine operating condition signal; catalyst condition detecting means responsive to said exhaust gas temperature signal for sensing a catalyst condition and for producing a catalyst condition signal; valve timing determining means responsive to said speed signal, said engine operating signal and said catalyst condition signal for computing said open and close timing in dependency on said engine operating condition and for producing an exhaust valve open timing signal and an intake valve opening period signal so as to make an opening timing of said exhaust valve advanced and to make an opening duration of said intake valve short when said engine is in said cold state, to make said opening timing of said exhaust valve normal and to make said opening duration of said intake valve short when said engine is at an abnormally high temperature and to make said opening timing of said exhaust valve normal and to make said opening duration of said intake valve long when said engine is operated in high load; and a driver responsive to said exhaust valve open timing signal and an intake valve opening period signal for controlling said variable means in order to operate said engine in an optimum condition at any temperature.

이 특허를 인용한 특허 (80)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

System for controlling a valve mechanism for an internal combustion engine 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (80)

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연합인증

System for controlling a valve mechanism for an internal combustion engine 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (80)

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