[특허]Method of and system for computing fuel injection amount for internal combustion engine

Method of and system for computing fuel injection amount for internal combustion engine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02M-051/00 F02D-041/18 F02D-041/34
출원번호	US-0053568 (1993-04-28)
우선권정보	JP-0111674 (1992-04-30)
발명자 / 주소	Udo Hiroshi (Fujisawa JPX)
출원인 / 주소	Nissan Motor Co., Ltd. (Yokohama JPX 03)
인용정보	피인용 횟수 : 17 인용 특허 : 0

초록 ▼

A fuel injection amount computing unit for an internal combustion engine is disclosed, wherein when an intake air flow Qho as calculated from a throttle valve opening degree and an engine speed is greater than a predetermined value, and when a variation DREAL of a smoothed basic fuel injection amount TpREAL is negative and a final basic fuel injection amount AvTp including phase adjustment and prefetched correction is greater than a trimmed basic fuel injection amount TrTp (=TpREAL×Ktrm), a surging smoothing index ND is switched from a value (0; smoothing prohibited) corresponding to the transient state to a value (3; smoothing maximized) corresponding to the fully open state.

대표청구항 ▼

In an internal combustion engine, the engine having a cylinder, a throttle valve and an injector: an airflow meter disposed in a suction system of the engine, said airflow meter outputting a signal indicative of an intake air flow; a throttle sensor disposed in said suction system of the engine, said throttle sensor outputting a signal indicative of an opening degree of the throttle valve; a crank angle sensor arranged to output a signal from which an engine speed is calculated; and a microcomputer based control unit connected to said airflow meter, said throttle sensor and said crank angle sensor, said control unit computing a fuel injection amount in accordance with said signal indicative of said intake air flow, said control unit comprising: surging smoothing means for smoothing a parameter for a computation of said fuel injection amount in accordance with a smoothing degree set in response to operating conditions of the engine and decreasing said smoothing degree in a transient state and increasing said smoothing degree in a fully open state at least; phase adjustment means for correcting said parameter as smoothed so as to correct a time lag produced from a measuring position of said intake air flow of said airflow meter to a position of the cylinder; prefetched correction means for correcting said parameter as smoothed in accordance with a variation of said intake air flow calculated from said opening degree of the throttle valve and said engine speed; first determination means for determining whether a variation of said parameter as corrected by said surging smoothing means is positive or negative; second determination means for determining that said parameter as corrected by said surging smoothing means, said phase adjustment means and said prefetched correction means is greater than said parameter as corrected by said surging smoothing means; switching restriction means for carrying out a switching of said smoothing degree of said surging smoothing means when said first determination means provide a result that said variation of said parameter as corrected by said surging smoothing means is negative and said second determination means provide a result that said parameter as corrected by said surging smoothing means, said phase adjustment means and said prefetched correction means is greater than said parameter as corrected by said surging smoothing means during a process of passage from said transient state to said fully open state; and injection control means for controlling a fuel injection of the injector into the cylinder.

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Gregory G. Hafner ; Brian G. McGee, Accurate deliver of total fuel when two injection events are closely coupled.
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Kevin P. Duffy ; Brian G. McGee ; Matthew R. Roth, Apparatus and method for controlling fuel injection signals during engine acceleration and deceleration.
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William J. Love ; Brian G. McGee, Apparatus and method for protecting engine electronic circuitry from thermal damage.
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Dutart, Charles H.; Fluga, Eric C., Camshaft apparatus and method for compensating for inherent injector delay in a multiple fuel injection event.
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Sato, Shinya; Nakagawa, Shinji; Kakuya, Hiromu; Minowa, Toshimichi; Nemoto, Mamoru, Engine controller and controlling method.
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Dutart, Charles H.; Mcgee, Brian G., Method and apparatus for adjusting the injection current duration of each fuel shot in a multiple fuel injection event to compensate for inherent injector delay.
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Brian G. McGee, Method and apparatus for controlling overlap of two fuel shots in multi-shot fuel injection events.
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Kevin P. Duffy ; Gregory G. Hafner ; Brian G. McGee ; Matthew R. Roth, Method and apparatus for controlling the current level of a fuel injector signal during sudden acceleration.
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McGee, Brian G., Method and apparatus for delivering multiple fuel injections to the cylinder of an engine wherein the pilot fuel injection occurs during the intake stroke.
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Duffy,Kevin P.; Fluga,Eric C.; McGee,Brian G.; Roth,Matthew R.; Hafner,Gregory G., Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine.
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Kevin P. Duffy ; Eric C. Fluga ; Gregory G. Hafner ; Brian G. McGee ; Matthew R. Roth, Method and apparatus for delivering multiple fuel injections to the cylinder of an internal combustion engine.
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Brian G. McGee, Method and apparatus for determining a start angle for a fuel injection associated with a fuel injection signal.
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Gregory G. Hafner ; Brian G. McGee, Method and apparatus for trimming a fuel injector.
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Gregory G. Hafner ; Brian G. McGee, Method and apparatus for trimming an internal combustion engine.
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Duffy, Kevin P.; McGee, Brian G., Partitioning of a governor fuel output into three separate fuel quantities in a stable manner.
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Farnworth, Warren M.; Wood, Alan G., Semiconductor component and a method of fabricating the semiconductor component.
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Brian G. McGee, Waveform transitioning method and apparatus for multi-shot fuel systems.
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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

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연합인증

Method of and system for computing fuel injection amount for internal combustion engine 원문보기

초록 ▼

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Method of and system for computing fuel injection amount for internal combustion engine 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (17)

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