[특허]Self-diagnosing apparatus and method for determining occurence of failure in inner cylinder pressure responsive sensor a

Self-diagnosing apparatus and method for determining occurence of failure in inner cylinder pressure responsive sensor a 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-019/00
출원번호	US-0352280 (1994-12-09)
우선권정보	JP-0309412 (1993-12-09)
발명자 / 주소	Watanabe Satoru (Atsugi JPX)
출원인 / 주소	Unisia Jecs Corporation (Atsugi JPX 03)
인용정보	피인용 횟수 : 79 인용 특허 : 0

초록 ▼

In a self-diagnose apparatus and method for detecting an occurrence of failure in any one of a plurality of inner pressure responsive sensors due to a variety mode of failures, an integral value IMEPi within a predetermined integral interval of an inner cylinder pressure P for each engine cylinder is calculated, under an engine steady-state driving condition, a weight mean value BGIMEPi for each engine cylinder of the integral value IMEPi and a weight mean value TBGIMP for all cylinders are calculated, respectively, and a deviation JGIMEP between BGIMEPi and TBGIMP is calculated. If JGIMEP≥SLSNS (threshold value), the self-diagnose apparatus and method determine that any one of the inner cylinder pressure responsive sensors which corresponds to one of the cylinders which indicates the result of JGIMEP≥SLSNS has failed.

대표청구항 ▼

A self-diagnosing apparatus for determining whether a failure in any one of inner cylinder pressure responsive sensors occurs, said inner cylinder pressure responsive sensors being disposed on respective engine cylinders so as to detect pressures within the respective engine cylinders for the respective engine cylinders and output inner cylinder pressure responsive signals indicative thereof, said diagnostic apparatus comprising: a) means for integrating one of said inner cylinder pressure responsive signals which corresponds to one of said engine cylinders for a predetermined integral interval, said integrating means integrating any other of said inner cylinder pressure responsive signals for each predetermined integral interval which corresponds to any other of the engine cylinders so as to derive the individual integrated values for all of the engine cylinders; b) means for calculating a first average value on the basis of at least presently and previously derived integrated values for every one of the engine cylinders; c) means for calculating a second average value on the basis of the presently derived integrated value for any one of the engine cylinders and previously derived second average value for all of the engine cylinders; d) means for establishing a predetermined relationship for each corresponding one of the engine cylinders between the first average value derived for the corresponding one of the engine cylinders and the second average value derived for all of the engine cylinders and comparing the established predetermined relationship with a predetermined threshold value; e) means for determining an occurrence of failure in any one of the inner cylinder pressure responsive sensors which corresponds to the corresponding one of the engine cylinders for which the compared first average value is derived when the established predetermined relationship is equal to or larger than the predetermined threshold value; and f) means for outputting a warning signal when said determining means determines the occurrence of failure in any one of the inner cylinder pressure sensors.

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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

Self-diagnosing apparatus and method for determining occurence of failure in inner cylinder pressure responsive sensor a 원문보기

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대표청구항 ▼

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연합인증

Self-diagnosing apparatus and method for determining occurence of failure in inner cylinder pressure responsive sensor a 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (79)

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