[특허]Air intake heating and diagnostic system for internal combustion engines

Air intake heating and diagnostic system for internal combustion engines 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02P-019/00
출원번호	US-0311562 (1994-09-23)
발명자 / 주소	Andrews Eric B. (Columbus IN) Stepper Mark R. (Columbus IN)
출원인 / 주소	Cummins Engine Company, Inc. (Columbus IN 02)
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

An air intake heating and diagnostic system for an internal combustion engine includes a microprocessor based controller for activating electrical heating elements for a preheat time period prior to starting the engine and for a postheat time period after starting the engine. The controller receives inputs corresponding to intake manifold air temperature, battery temperature, vehicle speed, engine speed, and key switch position. The system continuously monitors the integrity of the various sensors, monitors the functionality of the heating elements during the postheat time period, and warns the vehicle operator by illuminating a “check engine”lamp if certain fault conditions are detected. In both cases, the controller sets fault flags within the controller memory corresponding to the detected fault conditions.

대표청구항 ▼

A diagnostic system for warning a vehicle operator of a fault in an air intake heating system for supplying heated air to an internal combustion engine of the vehicle, said air intake heating system having means for sensing intake manifold air temperature and producing a temperature signal corresponding thereto, said engine having switch means for starting and stopping said engine, said switch means being switchable between “off”, “on”and “crank”states, said system further having means for prompting said operator to wait for a predetermined time period prior to starting said engine after switching said switch means from said “off”state to said “on”state, said diagnostic system comprising: means for storing first and second reference temperature signals, and first and second predetermined time periods; means for warning said vehicle operator of an air intake heating system fault; and controller means for detecting air intake heating system faults and activating said warning means and said prompting means in response thereto, said controller means receiving said temperature signal and (a) continuously activating and deactivating said prompting means at a predetermined frequency in response to said temperature signal falling below said first reference temperature signal for at least said first predetermined time period, and (b) activating said warning means in response to said temperature signal exceeding said second reference temperature signal for at least said second predetermined time period, when said switch means is switched from said “off”state to said “on”state prior to starting said engine, until said switch means is returned to said “off”state.

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Prust,Andrew J.; Thimmesch,Jan P.; Anderson,Chadwick P.; Gill,Alan P., Controller for air intake heater.
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Holmes, John William; Davison, Lynn Edward, Method for identifying an operating state of an engine soak timer.
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Joppig Peter,DEX ; Schmid Friedrich,DEX ; Schmid Wolfram,DEX, Method of heating the intake air.
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Arsenault Jeffrey S. ; Aislabie Martin J.,GBX ; McBroom Mark David, System and method for controlling the operation of a heated wiper area.
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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

Air intake heating and diagnostic system for internal combustion engines 원문보기

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Air intake heating and diagnostic system for internal combustion engines 원문보기

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이 특허를 인용한 특허 (22)

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