US3861367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-polluting internal combustion engine system
Assignee: Individual
•
Filing: 1974-07-24
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Granted: 1975-01-21
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Expires: 1994-07-24
Abstract
Abstract An internal combustion engine system is provided with a liquid oxygen tank and means for gasifying liquid oxygen leaving the tank and for conducting the gas to the inlet ports of the engine cylinders. A predetermined percentage of exhaust gases from the cylinders is conducted back to mix with the oxygen gas before it reaches the cylinders. Fuel from a tank iss delivered to said mixture. The system does not have any air intake but relies on oxygen from the liquid oxygen tank as the oxidizer for the fuel, thereby avoiding production of carbon monoxide, nitrous oxide and other noxious exhaust gases.
Inventors
- 👤 John J Kelmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:38
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/06; F04B47/08; F04B47/10; F02; F02B; F02B47/00; F02B47/04; F02B47/08; F02B47/10; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
In an internal combustion engine system provided with a water jacket and with cylinders having inlet and exhaust ports and containing pistons, a liquid oxygen tank, a heat exchanger for receiving liquid oxygen from the tank, means for delivering some of the hot water from the engine water jacket to the heat exchanger for gasifying liquid oxygen therein and cooling the water, conduit means for conducting the gaseous oxygen to said inlet ports, means for conducting a predetermined percentage of exhaust gases from said exhaust ports back to said conduit means to mix with oxygen therein, a fuel supply tank, a fuel line connected to the fuel tank for delivering fuel to said mixture to form a combustible mixture, a cooling tank, means for conducting water cooled in the heat exchanger to the cooling tank, means for delivering the rest of the hot water from the engine water jacket to said cooling tank for cooling therein, and means for returning water from the cooling tank to said water jacket, said system lacking an air intake.
Claim 2
Dependent Claim
175 words
In an internal combustion engine system provided with a water jacket and with cylinders having inlet and exhaust ports and containing pistons, a liquid oxygen tank, a heat exchanger for receiving liquid oxygen from the tank, means for delivering some of the hot water from the engine water jacket to the heat exchanger for gasifying liquid oxygen therein and cooling the water, conduit means for conducting the gaseous oxygen to said inlet ports, means for conducting a predetermined percentage of exhaust gases from said exhaust ports back to said conduit means to mix with oxygen therein, a fuel supply tank, a fuel line connected to the fuel tank for delivering fuel to said mixture to form a combustible mixture, a cooling tank, means for conducting water cooled in the heat exchanger to the cooling tank, means for delivering the rest of the hot water from the engine water jacket to said cooling tank for cooling therein, and means for returning water from the cooling tank to said water jacket, said system lacking an air intake.
Claim 3
Dependent Claim
29 words
In an internal combustion engine system according to claim 1, said exhaust gas conducting means being designed to conduct approximately 40% of the exhaust gases leaving said exhaust ports.
Claim 4
Dependent Claim
95 words
In an internal combustion engine system according to claim 1, said conduit means including a mixing chamber for receiving said exhaust gases, and said system including a throttle valve downstream from said chamber, means for injecting fuel from said fuel line into said conduit means downstream from said valve, a throttle valve in said fuel line, and means connecting said valves for operating them in unison, said exhaust gas conducting means including a conduit connected with said conduit means, a pump for pumping exhaust gases through said conduit, and a metering valve in said conduit.
Claim 5
Dependent Claim
62 words
In an Internal combustion engine system according to claim 1, said engine system being a diesel system in which said cylinders are provided with fuel injectors and said fuel line is connected to the injectors, said exhaust gas conducting means including a conduit connected with said conduit means, means for directing gases into said conduit, and a metering valve in said conduit.
Claim 6
Dependent Claim
95 words
In an internal combustion engine system according to claim 1, said means for delivering the rest of the hot water to the cooling tank including a pipe and thermostat means, and the engine system also including a by-pass conduit connecting the thermostat means to said water-returning means, said thermostat means normally closing said pipe but connecting the engine water jacket with said by-pass conduit for flow of water therethrough directly to said water-returning means until that water reaches a predetermined temperature and then closing the by-pass conduit and connecting the water jacket with said pipe.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |