US4546746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector for multicylinder internal combustion engines
Assignee: Honda Motor Co Ltd
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Filing: 1984-08-27
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Granted: 1985-10-15
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Expires: 2004-08-27
Abstract
Abstract A fuel injection system for a multibank engine having separate intake manifolds and throttle valves for each bank. Separate manifold pressure sensors for each bank are employed to determine injection signals for corresponding cylinders within each bank.
Inventors
- 👤 Toshihiko Sato
- 👤 Tetsuo Yamagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:52
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; F02D41/32; F02M; F02M69/00; F02M69/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
An injector system for an engine having a first cylinder bank with a first intake manifold and a first throttle valve associated therewith and a second cylinder bank with a second intake manifold and a second throttle valve associated therewith, the first and second throttle valves having a common throttle control, comprising a first pressure sensor in communication with the first intake manifold downstream of the first throttle valve; a second pressure sensor in communication with the second intake manifold downstream of the second throttle valve; first fuel injectors, each said first fuel injector being directed to a cylinder of the first cylinder bank; second fuel injectors, each said second fuel injector being directed to a cylinder of the second cylinder bank; and injector control means for controlling said first injectors responsive to said first pressure sensor and said second injectors responsive to said second pressure sensor.
Claim 2
Dependent Claim
147 words
An injector system for an engine having a first cylinder bank with a first intake manifold and a first throttle valve associated therewith and a second cylinder bank with a second intake manifold and a second throttle valve associated therewith, the first and second throttle valves having a common throttle control, comprising a first pressure sensor in communication with the first intake manifold downstream of the first throttle valve; a second pressure sensor in communication with the second intake manifold downstream of the second throttle valve; first fuel injectors, each said first fuel injector being directed to a cylinder of the first cylinder bank; second fuel injectors, each said second fuel injector being directed to a cylinder of the second cylinder bank; and injector control means for controlling said first injectors responsive to said first pressure sensor and said second injectors responsive to said second pressure sensor.
Claim 3
Dependent Claim
31 words
The injector system of claim 1 further comprising a rotation sensor for the engine, said injector control means further controlling said first and second injectors responsive to said engine rotation sensor.
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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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |