US5123391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic control fuel injection device a for an internal combustion engine
Assignee: Mitsubishi Electric Corp
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Filing: 1991-07-17
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Granted: 1992-06-23
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Expires: 2011-07-17
Abstract
Abstract An electronic control fuel injection device for an internal combustion engine having an inner cylinder pressure sensor for detecting a pressure of a combustion chamber of the internal combustion engine; a crank angle sensor for detecting a crank angle; a device for synthesizing the detected inner cylinder pressure by predetermined crank angles; a device for calculating an intake air quantity based on an engine revolution number which is obtained from the synthesized inner cylinder pressure and the crank angle; a device for synthesizing the calculated intake air quantity in predetermined cycles; and a device for calculating a fuel injection quantity based on the synthesized intake air quantity.
Inventors
- 👤 Satoru Ohkubo
- 👤 Akira Demizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:38
CPC Classifications
F; F02; F02D; F02D35/00; F02D35/02; F02D35/023; F02D41/00; F02D41/02; F02D41/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
An electronic control fuel injection device for an internal combustion engine which comprises: an inner cylinder pressure sensor for detecting a pressure of a combustion chamber of the internal combustion engine; a crank angle sensor for detecting a crank angle; means for synthesizing the detected inner cylinder pressure by predetermined crank angles; means for calculating an intake air quantity based on an engine revolution number which is obtained from the synthesized inner cylinder pressure and the crank angle; means for synthesizing the calculated intake air quantity in predetermined cycles; and means for calculating a fuel injection quantity based on the synthesized intake air quantity.
Claim 2
Dependent Claim
104 words
An electronic control fuel injection device for an internal combustion engine which comprises: an inner cylinder pressure sensor for detecting a pressure of a combustion chamber of the internal combustion engine; a crank angle sensor for detecting a crank angle; means for synthesizing the detected inner cylinder pressure by predetermined crank angles; means for calculating an intake air quantity based on an engine revolution number which is obtained from the synthesized inner cylinder pressure and the crank angle; means for synthesizing the calculated intake air quantity in predetermined cycles; and means for calculating a fuel injection quantity based on the synthesized intake air quantity.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |