US3858391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine starting circuit
Assignee: Motors Liquidation Co
•
Filing: 1973-08-27
•
Granted: 1975-01-07
•
Expires: 1993-08-27
Abstract
Abstract A gas turbine power plant includes an electric starter for cranking the engine and an electrical control system, both energized from a storage battery. The control system regulates the operation of the engine and includes a fuel valve solenoid and an atomizing air valve solenoid which are electrically energized. When the engine is started, these devices are energized along with the starter. Because of the heavy current required to operate the starter, the other electromagnetic devices are energized slightly before the starter to allow them to pull in while battery voltage is still at a normal level. The control system is energized by a first relay and amplifier or driver circuit and the starter by a second relay and amplifier or driver circuit. The starter amplifier circuit includes a capacitor which delays its operation for approximately 1/20 second after that of the other amplifier.
Inventors
- 👤 James L Davis
- 👤 Edward L Lopke
- 👤 Louis W Huellmantel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:33
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
In a motor vehicle, the combination of a gas turbine engine, an electrically-energized starter for cranking the engine, a control system for the engine including electromagnetic devices energized during starting and operation of the engine, and a storage battery for energizing the control system and starter with first relay means connected to energize the said control means from the battery, second relay means connected to energize the starter from the battery, and common energizing means for simultaneously energizing the said relay means, in which the second relay means includes time delay means to allow energization and pull-in of the said electromagnetic devices prior to energization of the starter and the accompanying drop in battery output voltage.
Claim 2
Dependent Claim
116 words
In a motor vehicle, the combination of a gas turbine engine, an electrically-energized starter for cranking the engine, a control system for the engine including electromagnetic devices energized during starting and operation of the engine, and a storage battery for energizing the control system and starter with first relay means connected to energize the said control means from the battery, second relay means connected to energize the starter from the battery, and common energizing means for simultaneously energizing the said relay means, in which the second relay means includes time delay means to allow energization and pull-in of the said electromagnetic devices prior to energization of the starter and the accompanying drop in battery output voltage.
Claim 3
Dependent Claim
131 words
In a motor vehicle, the combination of a gas turbine engine, an electrically-energized starter for cranking the engine, a control system for the engine including electromagnetic devices energized during starting and operation of the engine, and a storage battery for energizing the control system and starter with first relay means connected to energize the said control means from the battery including a first amplifier, second relay means connected to energize the starter from the battery including a second amplifier, and common energizing means for simultaneously energizing the said amplifiers, in which the second amplifier includes time delay capacitor means to delay operation of the second amplifier and thus allow energization and pull-in of the said electromagnetic devices prior to energization of the starter and the accompanying drop in battery output voltage.
Claim 4
Dependent Claim
131 words
In a motor vehicle, the combination of a gas turbine engine, an electrically-energized starter for cranking the engine, a control system for the engine including electromagnetic devices energized during starting and operation of the engine, and a storage battery for energizing the control system and starter with first relay means connected to energize the said control means from the battery including a first amplifier, second relay means connected to energize the starter from the battery including a second amplifier, and common energizing means for simultaneously energizing the said amplifiers, in which the second amplifier includes time delay capacitor means to delay operation of the second amplifier and thus allow energization and pull-in of the said electromagnetic devices prior to energization of the starter and the accompanying drop in battery output voltage.
References Cited (Backward Citations)
US2886015A
Cited
US2962597A
Cited
US3310937A
Cited
US3443112A
Cited
US3440433A
Cited
US3691759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |