US4022164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric idle for internal combustion engine
Assignee: Motors Liquidation Co
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Filing: 1976-01-28
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Granted: 1977-05-10
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Expires: 1996-01-28
Abstract
Abstract An internal combustion engine is controlled by a throttle valve which can close completely to prevent fuel flow to the engine. There is no idle jet below the throttle valve. When the engine is at idle speed, the starter motor is energized to maintain engine rotation so that no fuel is consumed during engine idling.
Inventors
- 👤 John R. Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:24
CPC Classifications
F; F02; F02D; F02D37/00; F02B; F02B75/00; F02B75/12; F02M; F02M3/00; F02M3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
In a motor vehicle propelled by an internal combustion engine a carburetor controlled by a throttle value means for supplying fuel and air to the engine, the throttle valve means being biased to a fully closed position and effective when closed to prevent air flow and fuel flow through the carburetor, a battery energized starter motor manually enabled for engagement through a starter gear and an engine drive gear to crank the engine during engine starting, means responsive to engine speed to detect an engine idle speed and to energize the starter motor during engine idle, means for sensing starter motor speed and comparing that speed with engine speed to determine gear synchronism of the engine drive gear and the starter gear, and means effective when gear synchronism is attained for engaging the starter gear with the engine drive gear whereby the engine is continuously rotated by the starter motor when the throttle valve means is fully closed.
Claim 2
Dependent Claim
158 words
In a motor vehicle propelled by an internal combustion engine a carburetor controlled by a throttle value means for supplying fuel and air to the engine, the throttle valve means being biased to a fully closed position and effective when closed to prevent air flow and fuel flow through the carburetor, a battery energized starter motor manually enabled for engagement through a starter gear and an engine drive gear to crank the engine during engine starting, means responsive to engine speed to detect an engine idle speed and to energize the starter motor during engine idle, means for sensing starter motor speed and comparing that speed with engine speed to determine gear synchronism of the engine drive gear and the starter gear, and means effective when gear synchronism is attained for engaging the starter gear with the engine drive gear whereby the engine is continuously rotated by the starter motor when the throttle valve means is fully closed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |