US3845745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water injection system for an internal combustion engine
Assignee: Individual
•
Filing: 1972-07-03
•
Granted: 1974-11-05
•
Expires: 1992-07-03
Abstract
Abstract Water is pumped along a number of lines, one for each engine cylinder, to individual valving and nozzle means in the manifold wall located immediately adjacent the inlet valve of the respective cylinders or rotary chambers. The pumping means is controlled by manifold pressure to provide water in the outlet lines when manifold pressure exceeds a predetermined magnitude and in increasing amounts as the manifold pressure increases further. In another version, water feed lines are connected to valving and nozzle means received within a spacer plate mounted to the carburetor such that the water is injected directly into the fuel-air mixture and thereby supplied to all of the cylinders or rotary chambers, as the case may be. The water reservoir and pumping means are the same and control is maintained as in the first version.
Inventors
- 👤 C Dunlap
- 👤 H Himes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:18
CPC Classifications
F; F02; F02B; F02B47/00; F02B47/02; F02M; F02M25/00; F02M25/022; F02M25/0227; F02M25/025; F02M25/028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
Water injection system for an internal combustion engine having a plurality of combustion chambers and a manifold via which a fuel-air mixture is conduited to said combustion chambers, comprising: a reservoir of distilled water; an electrically powered pump for providing pressurized water from said reservoir; a poppet valve having an inlet connected to receive the pressurized water from said pump and an outlet, said valve being actuatable to pass selectively variable amounts of pressurized water to its outlet; a plurality of pintle valve and nozzle means each located in the manifold closely adjacent an individual combustion chamber; individual feed line means interconnecting the poppet valve outlet and the pintle valve and nozzle means; and means responsive to manifold pressure for interconnecting electric power to said pump and for actuating said poppet valve on manifold pressure exceeding a predetermined threshold amount, said means responsive to manifold pressure including a diaphragm pressure regulator, rod means connected with said regulator and positioned in correspondence with the manifold pressure, and switch means operated by said rod interconnecting electric power to said pump.
Claim 2
Dependent Claim
178 words
Water injection system for an internal combustion engine having a plurality of combustion chambers and a manifold via which a fuel-air mixture is conduited to said combustion chambers, comprising: a reservoir of distilled water; an electrically powered pump for providing pressurized water from said reservoir; a poppet valve having an inlet connected to receive the pressurized water from said pump and an outlet, said valve being actuatable to pass selectively variable amounts of pressurized water to its outlet; a plurality of pintle valve and nozzle means each located in the manifold closely adjacent an individual combustion chamber; individual feed line means interconnecting the poppet valve outlet and the pintle valve and nozzle means; and means responsive to manifold pressure for interconnecting electric power to said pump and for actuating said poppet valve on manifold pressure exceeding a predetermined threshold amount, said means responsive to manifold pressure including a diaphragm pressure regulator, rod means connected with said regulator and positioned in correspondence with the manifold pressure, and switch means operated by said rod interconnecting electric power to said pump.
Claim 3
Dependent Claim
172 words
Water injection system for an internal combustion engine having a plurality of combustion chambers and a manifold via which a fuel-air mixture is conduited to said combustion chambers, comprising: a reservoir of liquid; an electrically powered pump for providing pressurized liquid from said reservoir; valve means having an inlet connected to receive the pressurized liquid from said pump and an outlet, said valve means being actuatable to pass selectively variable amounts of pressurized water to its outlet; a plurality of spray and nozzle means each located in the manifold closely adjacent an individual combustion chamber; individual feed line means interconnecting the valve means outlet and the spray nozzle means; and means responsive to manifold pressure for interconnecting electric power to said pump for actuating said valve means on manifold pressure exceeding a predetermined threshold amount, said means responsive to pressure including a diaphragm pressure regulator, rod means connected with said regulator and positioned in correspondence with the manifold pressure, and switch means operated by said rod interconnecting electric power to said pump.
Claim 4
Dependent Claim
172 words
Water injection system for an internal combustion engine having a plurality of combustion chambers and a manifold via which a fuel-air mixture is conduited to said combustion chambers, comprising: a reservoir of liquid; an electrically powered pump for providing pressurized liquid from said reservoir; valve means having an inlet connected to receive the pressurized liquid from said pump and an outlet, said valve means being actuatable to pass selectively variable amounts of pressurized water to its outlet; a plurality of spray and nozzle means each located in the manifold closely adjacent an individual combustion chamber; individual feed line means interconnecting the valve means outlet and the spray nozzle means; and means responsive to manifold pressure for interconnecting electric power to said pump for actuating said valve means on manifold pressure exceeding a predetermined threshold amount, said means responsive to pressure including a diaphragm pressure regulator, rod means connected with said regulator and positioned in correspondence with the manifold pressure, and switch means operated by said rod interconnecting electric power to said pump.
Claim 5
Dependent Claim
20 words
Water injection system as in claim 2, iN which said feed line means are all of substantially the same length.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |