US4805577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply control apparatus for internal combustion engine
Assignee: Mitsubishi Electric Corp
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Filing: 1988-06-22
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Granted: 1989-02-21
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Expires: 2008-06-22
Abstract
Abstract A fuel supply control apparatus for an internal combustion engine comprises a detecting means for detecting the increment of air intake quantity for the internal combustion engine and a sensor for detecting temperature of the cooling water of the internal combustion engine so that the fuel supply quantity is increased according to the temperature of cooling water when the increment of air intake quantity is detected, thereby enabling rapid increment of fuel supply quantity according to the increment of the revolution of the engine and compensation of fuel supply loss, which is caused by adhesion of liquefying fuel inside the air intake pipe and the like, according to the temperature of cooling water.
Inventors
- 👤 Yoshiaki Kanno
- 👤 Katsuya Nakamoto
- 👤 Jiro Sumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:19
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/18; F02D41/04; F02D41/047; F02D41/06; F02D41/10; F02D41/185
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
205 words
A fuel supply control apparatus for an internal combustion engine comprising: an air flow sensor for detecting an air intake quantity which is sucked into said internal combustion engine to be controlled, a revolution sensor which detects the number of revolutions of said internal combustion engine, an AN detecting means for detecting synchronously with each revolution the air intake quantity per each suction of said internal combustion engine on the basis of an output of said air flow sensor and said revolution sensor, an AN computing means for damping an output of said AN detecting means, synchronously with each revolution, a control means for controlling a fuel supply to said internal combustion engine on the basis of an output of said AN computing means, an air intake incremental detecting means for detecting an incremental value of the output of said AN computing means at each damping cycle, A means for increasing fuel supply quantity to said internal combustion engine on the basis of the output of said AN computing means corrected by the incremental value of the output thereof, when said air intake incremental detecting means detects that the incremental value of the output of said AN computing means is larger than a predetermined value.
Claim 2
Dependent Claim
205 words
A fuel supply control apparatus for an internal combustion engine comprising: an air flow sensor for detecting an air intake quantity which is sucked into said internal combustion engine to be controlled, a revolution sensor which detects the number of revolutions of said internal combustion engine, an AN detecting means for detecting synchronously with each revolution the air intake quantity per each suction of said internal combustion engine on the basis of an output of said air flow sensor and said revolution sensor, an AN computing means for damping an output of said AN detecting means, synchronously with each revolution, a control means for controlling a fuel supply to said internal combustion engine on the basis of an output of said AN computing means, an air intake incremental detecting means for detecting an incremental value of the output of said AN computing means at each damping cycle, A means for increasing fuel supply quantity to said internal combustion engine on the basis of the output of said AN computing means corrected by the incremental value of the output thereof, when said air intake incremental detecting means detects that the incremental value of the output of said AN computing means is larger than a predetermined value.
Claim 3
Dependent Claim
34 words
A fuel supply control apparatus for an internal combustion engine as set forth in claim 1, wherein an upper limit is set at the increment of fuel supply quantity for said internal combustion engine.
References Cited (Backward Citations)
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |