US5060608A
Expired / Lapsed
US
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Engine control apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1990-12-14
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Granted: 1991-10-29
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Expires: 2010-12-14
Abstract
Abstract An engine control apparatus comprises a revolution speed sensor for detecting the number of revolutions of an internal combustion engine, an abnormality detecting means for detecting abnormality in the engine, and a control means for increasing or decreasing the number of misfire cylinders so that the revolution speed of the engine is brought down by a limited degree corresponding to a degree of abnormality of the engine when the abnormality is detected.
Inventors
- 👤 Hideki Umemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:02
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/22; F02B; F02B77/00; F02B77/08; F02B61/00; F02B61/04; F02B61/045
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
72 words
An engine control apparatus which comprises: a revolution speed sensor for detecting the number of revolutions of an internal combustion engine; an abnormality detecting means for detecting abnormality in said engine, and a control means for or increasing the number of misfire cylinders so that the revolution speed of the engine is brought down by a limited degree corresponding to a degree of abnormality of the engine when the abnormality is detected.
Claim 2
Dependent Claim
72 words
An engine control apparatus which comprises: a revolution speed sensor for detecting the number of revolutions of an internal combustion engine; an abnormality detecting means for detecting abnormality in said engine, and a control means for or increasing the number of misfire cylinders so that the revolution speed of the engine is brought down by a limited degree corresponding to a degree of abnormality of the engine when the abnormality is detected.
Claim 3
Dependent Claim
42 words
The engine control apparatus according to claim 1, wherein said abnormality detecting means comprises a temperature sensor for detecting the temperature of the engine, an oil level sensor for the engine, and a voltage sensor for detecting the voltage of the battery.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-28 | 1995-04-29 | 1995-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-28 | 1999-04-29 | 1999-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-28 | 2003-04-29 | 2003-10-29 | $7700.00 | Window Closed / Lapsed |