US3614944A
Expired / Lapsed
US
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Engine apparatus
Assignee: TILLOTSON Ltd (TILLOSTSON") A CORP OF IRELAND
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Filing: 1969-09-11
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Granted: 1971-10-26
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Expires: 1989-09-11
Abstract
Abstract THE FUEL-PER-STROKE WHICH FUEL INJECTION SYSTEMS DELIVER TO AN ENGINE IS VARIED IN ACCORDANCE WITH ENGINE SPEED TO PROVIDE A DESIRED FUEL-AIR MIXTURE RATIO BY MEANS OF A SPRING-LOADED CHECK VALVE RESPONSIVE TO MOMENTARY PRESSURE IMPULSES OCCURRING IN A PUMP CHAMBER AND OPERATIVE TO DIVERT INCREASING FUEL AT INCREASING ENGINE SPEEDS. THE CHECK VALVE SPRING LOADING IS VARIED SIMULTANEOUSLY WITH THE PUMP DELIVERY SETTING IN SOME EMBODIMENTS, AND VALVE OPERATION IS VARIED IN ACCORDANCE WITH ENGINE SPEED AND/OR ACCELERATION IN SOME EMBODIMENTS. THE SYSTEM IS ILLUSTRATED IN CONNECTION WITH SEVERAL RECIPROCATING FUEL-INJECTION PUMPS AND SEVERAL ROTARY FUEL-INJECTION PUMPS.
Inventors
- 👤 Otmar M Ulbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
F; F01; F01M; F01M3/00; F01M3/02; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |