US5205255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting time engine speed control device
Assignee: Hitachi Unisia Automotive Ltd
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Filing: 1991-11-26
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Granted: 1993-04-27
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Expires: 2011-11-26
Abstract
Abstract A starting time engine speed control device is provided for controlling fuel to be injected by correcting an amount thereof within a predetermined period of time after the start of an internal combustion engine using a starting time fuel injection control with respect to a basic fuel control. The engine is mounted on a vehicle and has a clutch mechanism which is coupled when engine speed exceeds a coupling engine speed, and the starting time engine speed control device includes a control arrangement adapted to control the fuel to be injected by gradually increasingly correcting the amount thereof in accordance with increasing engine speed up to said coupling engine speed using the starting time fuel injection control.
Inventors
- 👤 Takashi Yamagata
- 👤 Hiroyuki Shimase
- 👤 Mitsuru Miyata
- 👤 Tomoyuki Hirose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:00
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/06; F02D41/061
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A starting time engine speed control device for controlling fuel to be injected by correcting an amount thereof within a predetermined period of time after the start of an internal combustion engine by means of a starting time fuel injection control with respect to a basic fuel injection control, the engine being mounted on a vehicle and having a clutch mechanism which is coupled when the engine speed exceeds a coupling engine speed, wherein said starting time engine speed control device includes control means adapted to control the fuel to be injected by gradually increasingly correcting the amount thereof by means of said starting time fuel injection control in accordance with increasing engine speed up to said coupling engine speed at the time fuel is injected.
Claim 2
Dependent Claim
126 words
A starting time engine speed control device for controlling fuel to be injected by correcting an amount thereof within a predetermined period of time after the start of an internal combustion engine by means of a starting time fuel injection control with respect to a basic fuel injection control, the engine being mounted on a vehicle and having a clutch mechanism which is coupled when the engine speed exceeds a coupling engine speed, wherein said starting time engine speed control device includes control means adapted to control the fuel to be injected by gradually increasingly correcting the amount thereof by means of said starting time fuel injection control in accordance with increasing engine speed up to said coupling engine speed at the time fuel is injected.
Claim 3
Dependent Claim
198 words
A starting time engine speed control device for controlling fuel to be injected by correcting an amount thereof within a predetermined period of time after the start of an internal combustion engine by means of a starting time fuel injection control with respect to a basic fuel injection control, the engine being mounted on a vehicle and having a clutch mechanism which is coupled when the engine speed exceeds a coupling engine speed, wherein said starting time engine speed control includes control means adapted to control the fuel to be injected by gradually increasingly correcting the amount thereof by means of said starting time fuel injection control in accordance with increasing engine speed up to said coupling engine speed at the time fuel is injected, said control means being further provided with means for controlling such that when a throttle opening degree is equal to or more than a preset throttle opening degree and engine speed is equal to or higher than a preset level, the mode of controlling is shifted from said starting time fuel injection control to said basic fuel injection control so that said amount of fuel is decided by said basic fuel injection control.
Claim 4
Dependent Claim
198 words
A starting time engine speed control device for controlling fuel to be injected by correcting an amount thereof within a predetermined period of time after the start of an internal combustion engine by means of a starting time fuel injection control with respect to a basic fuel injection control, the engine being mounted on a vehicle and having a clutch mechanism which is coupled when the engine speed exceeds a coupling engine speed, wherein said starting time engine speed control includes control means adapted to control the fuel to be injected by gradually increasingly correcting the amount thereof by means of said starting time fuel injection control in accordance with increasing engine speed up to said coupling engine speed at the time fuel is injected, said control means being further provided with means for controlling such that when a throttle opening degree is equal to or more than a preset throttle opening degree and engine speed is equal to or higher than a preset level, the mode of controlling is shifted from said starting time fuel injection control to said basic fuel injection control so that said amount of fuel is decided by said basic fuel injection control.
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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) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |