Patent US3763832A successfully refreshed from Google Patents.
US3763832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection system for internal combustion engine
Assignee: CAV Ltd
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Filing: 1971-11-05
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Granted: 1973-10-09
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Expires: 1991-11-05
Abstract
Abstract A fuel injection system for an internal combustion engine including a pump which delivers fuel through a pipeline to an injection nozzle mounted on the engine. Also provided is a stepped cylinder which accommodates a complementarily stepped piston. The wider end of the cylinder is open to the aforesaid pipe line and the narrower end of the cylinder communicates with a source of fluid. A conduit is provided and through which fluid from the narrower end of the cylinder is displaced during inward movement of the piston, the displaced fluid eventually flowing to the engine.
Inventors
- 👤 I Fenne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:59
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/022; F02M25/025; F02M25/03; F02M25/0221; F02M25/0225; F02M43/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
A fuel injection system for internal combustion engines and comprising a fuel pump in timed relationship with the associated engine and a fuel injection nozzle communicating with the pump and mounted on the engine so that fuel is delivered to a combustion space of the engine, the system also comprising a cylinder, a piston slidable within the cylinder, resilient means loading the piston towards one end of the cyLinder, said one end of the cylinder in use, being connected to the pump so that the piston will be subjected to the pressure of fuel supplied to the nozzle and will, be moved thereby against the action of the resilient means, valve means for admitting water or other fluid to the other end of the cylinder and said other end of the cylinder in use, communicating with a conduit through which water displaced from said other end of the cylinder can flow to the combustion space of the engine.
Claim 2
Dependent Claim
158 words
A fuel injection system for internal combustion engines and comprising a fuel pump in timed relationship with the associated engine and a fuel injection nozzle communicating with the pump and mounted on the engine so that fuel is delivered to a combustion space of the engine, the system also comprising a cylinder, a piston slidable within the cylinder, resilient means loading the piston towards one end of the cyLinder, said one end of the cylinder in use, being connected to the pump so that the piston will be subjected to the pressure of fuel supplied to the nozzle and will, be moved thereby against the action of the resilient means, valve means for admitting water or other fluid to the other end of the cylinder and said other end of the cylinder in use, communicating with a conduit through which water displaced from said other end of the cylinder can flow to the combustion space of the engine.
Claim 3
Dependent Claim
44 words
A system as claimed in claim 1 including further valve means in said conduit said further valve means being opened to permit the water or other fluid to flow along said conduit during movement of the piston against the action of its resilient loading.
Claim 4
Dependent Claim
30 words
A system as claimed in claim 2 said cylinder being of stepped form and the piston being of complementary shape, said conduit extending from the narrower end of the cylinder.
Claim 5
Dependent Claim
21 words
A system as claimed in claim 3 in which said conduit extends between the narrower and wider ends of the piston.
Claim 6
Dependent Claim
17 words
A system as claimed in claim 3 in which the conduit terminates at the fuel injection nozzle.
Claim 7
Dependent Claim
21 words
A system as claimed in claim 3 in which said conduit communicates with a further injection nozzle mounted on the engine.
References Cited (Backward Citations)
DE1958732A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |