EP0154509A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fuel injection control apparatus for internal combustion engine
Assignee: Mitsubishi Electric Corp
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Filing: 1985-02-27
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Granted: —
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Expires: 2005-02-27
Abstract
Abstract A fuel injection control apparatus for an internal combustion engine using a hot-wire type air flow sensor 3 wherein, even during a low engine speed and in a fully opened condition of the throttle valve 5 of the engine, the output of the air flow sensor is corrected corresponding to the opening of the throttle valve and the engine speed on the basis on a predetermined relationship therebetween, thereby providing a proper A/F ratio.
Inventors
- 👤 Seiji Wataya
- 👤 Yoshiaki Kanno
- 👤 Yukinobu Nishimura
- 👤 Setsuhiro Shimomura
- 👤 Osamu Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/24; F02D41/2406; F02D41/02; F02D41/18; F02D41/182; F02D41/187
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A fuel injection control apparatus for an internal combustion engine comprising a hot-wire type air flow sensor means (3) for defecting the inlet air flow rate of said engine (1), a speed sensor means (9) for detecting the rotational speed of said engine, a control means (8') for computing a fuel amount to be supplied to said engine on the basis cf the outputs of said air flow sensor means and of said speed sensor means, and a fuel injection valve (2) driven by said control means; said apparatus further comprising a throttle valve sensor means (15) for detecting the opening of the throttle valve (5) of said engine, and said control means including a correction means (101,103,104) for correcting the output of said air flow sensor means according to the outputs of said throttle valve sensor means and said speed sensor means.
Claim 2
Dependent Claim
143 words
A fuel injection control apparatus for an internal combustion engine comprising a hot-wire type air flow sensor means (3) for defecting the inlet air flow rate of said engine (1), a speed sensor means (9) for detecting the rotational speed of said engine, a control means (8') for computing a fuel amount to be supplied to said engine on the basis cf the outputs of said air flow sensor means and of said speed sensor means, and a fuel injection valve (2) driven by said control means; said apparatus further comprising a throttle valve sensor means (15) for detecting the opening of the throttle valve (5) of said engine, and said control means including a correction means (101,103,104) for correcting the output of said air flow sensor means according to the outputs of said throttle valve sensor means and said speed sensor means.
Claim 3
Dependent Claim
62 words
A fuel injection control apparatus for an internal combustion engine recited in claim 1 wherein said correction means includes a storage means (101) having stored therein a data map comprising correction factors as a function of an opening of the throttle valve of an engine and the rotational speed of said engine, for correcting the inlet air flow rate of said engine.
Claim 4
Dependent Claim
47 words
A fuel injection control apparatus for an internal combustion engine recited in claim 2 wherein said correction factor in said data map of said storage means corrects the detected inlet air flow rate to be equal to or somewhat larger than the true inlet air flow rate.
Claim 5
Dependent Claim
36 words
A fuel injection control apparatus for an internal combustion engine recited in claim 2 wherein said correction means further includes means (104) for multiplying said correction factor with the output of said air flow sensor means.
Claim 6
Dependent Claim
32 words
A fuel injection control apparatus for an internal combustion engine recited in claim 3 wherein said correction means further includes means (103) for averaging the output of said air flow sensor means.
Claim 7
Dependent Claim
47 words
A fuel injection control apparatus for an internal combustion engine recited in claim 4 wherein said speed sensor means comprises an ignition device (9) and a speed detector (102) connected to said ignition device to derive a speed signal from an ignition signal of said ignition device.
References Cited (Backward Citations)
No citation records indexed.
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