Patent US5027779A successfully refreshed from Google Patents.
US5027779A
Expired / Lapsed
US
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Fuel injection control apparatus for an internal combustion engine
Assignee: Mitsubishi Electric Corp
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Filing: 1990-07-10
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Granted: 1991-07-02
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Expires: 2010-07-10
Abstract
Abstract A fuel injection control apparatus for an internal combustion engine adapted to operate, at a predetermined timing, the time of starting fuel injection on the basis of a revolution speed of the engine and a fuel injection time and to start fuel injection by using the latest information among the time of starting fuel injection operated, characterized in that the newest information of the time of starting fuel injection is corrected based on the temperature of cooling water for the engine.
Inventors
- 👤 Ryoji Nishiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:37
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; F02D41/32; F02D41/34; F02D41/345; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A fuel injection control apparatus for an internal combustion engine adapted to operate, at a predetermined timing, the time of starting fuel injection on the basis of a revolution speed of the engine and a fuel injection time and to start fuel injection by using the latest information among the time of starting fuel injection operated, characterized in that the latest information of the time of starting fuel injection is corrected based on the temperature of cooling water for the engine, wherein when the temperature of cooling water is lower than a predetermined value, a datum which shows the time of starting fuel injection in a state of the engine being cool, is obtained from a map representing a relation of a cooling water temperature to the time of starting fuel injection and the datum is used as the time of starting fuel injection, and wherein when the temperature of cooling water is higher than the predetermined value, the time of starting fuel injection is obtained from a map representing a relation of an engine revolution speed and a fuel injection time period.
Claim 2
Dependent Claim
183 words
A fuel injection control apparatus for an internal combustion engine adapted to operate, at a predetermined timing, the time of starting fuel injection on the basis of a revolution speed of the engine and a fuel injection time and to start fuel injection by using the latest information among the time of starting fuel injection operated, characterized in that the latest information of the time of starting fuel injection is corrected based on the temperature of cooling water for the engine, wherein when the temperature of cooling water is lower than a predetermined value, a datum which shows the time of starting fuel injection in a state of the engine being cool, is obtained from a map representing a relation of a cooling water temperature to the time of starting fuel injection and the datum is used as the time of starting fuel injection, and wherein when the temperature of cooling water is higher than the predetermined value, the time of starting fuel injection is obtained from a map representing a relation of an engine revolution speed and a fuel injection time period.
References Cited (Backward Citations)
US4562817A
Cited
JPS6035153A
Cited
US4563994A
Cited
JPS63173826A
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US4875452A
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US4926806A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |