Patent US3874167A successfully refreshed from Google Patents.
US3874167A
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US
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Gas turbine control with fuel shut-off and ignition upon deceleration
Assignee: Nissan Motor Co Ltd
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Filing: 1974-01-16
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Granted: 1975-04-01
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Expires: 1994-01-16
Abstract
Abstract A fuel shut-off signal is generated if the rotational speed of a gas producer shaft is above a certain value and an accelerator pedal is not depressed beyond a certain point, indicating a deceleration demand condition. An ignition signal to restart the engine is also generated and the fuel shut-off signal is terminated when the deceleration demand condition is removed.
Inventors
- 👤 Tetsuo Katsume
- 👤 Toshihiro Horiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:10
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A control device for a two-shaft gas turbine engine responsive to the rotational speed of an engine gas producer shaft and the position of a manual engine speed control member; said control device being operative to generate a fuel shut-off signal when said rotational speed is above a first predetermined value and said position corresponds to an engine speed below a second predetermined value indicating a deceleration demand condition of the engine; said control device being further operative to generate an ignition signal for a predetermined period of time after at least one of said rotational speed drops below said first predetermined value and said position is manually changed to correspond to an engine speed above said second predetermined value after said deceleration demand condition.
Claim 2
Dependent Claim
125 words
A control device for a two-shaft gas turbine engine responsive to the rotational speed of an engine gas producer shaft and the position of a manual engine speed control member; said control device being operative to generate a fuel shut-off signal when said rotational speed is above a first predetermined value and said position corresponds to an engine speed below a second predetermined value indicating a deceleration demand condition of the engine; said control device being further operative to generate an ignition signal for a predetermined period of time after at least one of said rotational speed drops below said first predetermined value and said position is manually changed to correspond to an engine speed above said second predetermined value after said deceleration demand condition.
Claim 3
Dependent Claim
39 words
A control device as claimed in claim 1, which comprises a logical comparator to determine when the engine is in said deceleration demand condition and a one-shot multivibrator to generate said ignition signal for said predetermined period of time.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |