Patent US5812771A successfully refreshed from Google Patents.
Patent US3805752A successfully refreshed from Google Patents.
US3805752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenched combustion separated charge internal combustion engine
Assignee: Motors Liquidation Co
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Filing: 1973-02-23
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Granted: 1974-04-23
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Expires: 1993-02-23
Abstract
Abstract A four-stroke cycle spark ignition internal combustion engine is provided in a preferred embodiment with one or more pairs of closed end cylinders having pistons arranged to reciprocate in phase or less than about one-half stroke out of phase and defining expansible chambers connected by a short transfer port. One of the chambers includes a spark plug near the transfer port, as well as valve-controlled intake and exhaust ports for respectively admitting combustible mixture to the chamber and exhausting spent gases therefrom. The other chamber includes a valve-controlled intake port for admitting air and/or exhaust gases to the chamber and a transfer valve to control the exhaust and intake of gases through the transfer port. The operating cycle involves reducing cylinder temperatures by quenching the earliest burned portions of the mixture ignited in one chamber through mixing it with portions of the air or air-exhaust mixture compressed in the other chamber shortly after the beginning of combustion in the one chamber. The mixing is accomplished by transferring gases between the cylinders through the transfer port.
Inventors
- 👤 R Cataldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:21
CPC Classifications
F; F02; F02B; F02B41/00; F02B3/00; F02B3/02; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
The method of operating an internal combustion engine having a pair of cylinders and pistons defining adjacent first and second expansible chambers and means interconnecting said chambers, said method comprising supplying a combustible mixture of air and hydrocarbon fuel to said first chamber while simultaneously supplying a charge of quenching and oxidizing gas to said second chamber, compressing separately the mixture in said first chamber and the gas in said second chamber, igniting and burning the mixture in said first chamber, quenching the earliest burned parts of the mixture in said first chamber by transferring during the early combustion stages a portion of the fluid in one of said chambers to the other of said chambers to mix with a portion of the fluid therein, said fluid transfer beginning when said piston in said first chamber is still near it''s top dead center position, one of said fluid portions including the earliest burned parts of the mixture in said first chamber, expanding the fluid in both said chambers with an output of power, and transferring the expanded gases from said second chamber into said first chamber for mixing with the gases therein and simultaneously exhausting the mixed gases from said first chamber.
Claim 2
Independent Claim
202 words
The method of operating an internal combustion engine having a pair of cylinders and pistons defining adjacent first and second expansible chambers and means interconnecting said chambers, said method comprising supplying a combustible mixture of air and hydrocarbon fuel to said first chamber while simultaneously supplying a charge of quenching and oxidizing gas to said second chamber, compressing separately the mixture in said first chamber and the gas in said second chamber, igniting and burning the mixture in said first chamber, quenching the earliest burned parts of the mixture in said first chamber by transferring during the early combustion stages a portion of the fluid in one of said chambers to the other of said chambers to mix with a portion of the fluid therein, said fluid transfer beginning when said piston in said first chamber is still near it''s top dead center position, one of said fluid portions including the earliest burned parts of the mixture in said first chamber, expanding the fluid in both said chambers with an output of power, and transferring the expanded gases from said second chamber into said first chamber for mixing with the gases therein and simultaneously exhausting the mixed gases from said first chamber.
Claim 3
Independent Claim
173 words
The method of operating an internal combustion engine having a pair of cylinders and pistons defining adjacent first and second expansible chambers and means interconnecting said chambers, said method comprising the steps of: simultaneously expanding said chambers while supplying to said first chamber a combustible mixture of air and hydrocarbon fuel and supplying air to said second chamber, separately compressing the mixture in said first chamber and the air in said second chamber, igniting and burning the mixture in said first chamber, quenching the earliest burned parts of said mixture during the early stages of combustion by transferring to said second chamber a portion of the partially burned mixture in said first chamber, including the earliest burned parts of said mixture, to mix with the air in said second chamber, said fluid transfer beginning when said piston in said first chamber is still near it''s top dead center position, expanding the fluid in both said chambers with an output of power, and simultaneously mixing together and exhausting the expanded products in said chambers.
Claim 4
Independent Claim
173 words
The method of operating an internal combustion engine having a pair of cylinders and pistons defining adjacent first and second expansible chambers and means interconnecting said chambers, said method comprising the steps of: simultaneously expanding said chambers while supplying to said first chamber a combustible mixture of air and hydrocarbon fuel and supplying air to said second chamber, separately compressing the mixture in said first chamber and the air in said second chamber, igniting and burning the mixture in said first chamber, quenching the earliest burned parts of said mixture during the early stages of combustion by transferring to said second chamber a portion of the partially burned mixture in said first chamber, including the earliest burned parts of said mixture, to mix with the air in said second chamber, said fluid transfer beginning when said piston in said first chamber is still near it''s top dead center position, expanding the fluid in both said chambers with an output of power, and simultaneously mixing together and exhausting the expanded products in said chambers.
Claim 5
Dependent Claim
190 words
An internal combustion engine adapted for quenched combustion separated charge operation, said engine comprising means defining first and second cylinders, each closed at one end and having their closed ends proximate one another, pistons reciprocable in said cylinders and defining therewith first and second expansible chambers at the closed ends of said first and second cylinders, respectively, said pistons being connected to a common power output mechanism for concurrent reciprocation of a four-stroke operating cycle with a phase separation not greater than one-half stroke, a valve-controlled inlet port to said first chamber, said port being connected with air-fuel mixture supply means, a valve-controlled inlet port to said second chamber, said port being connected with a source of air, a valve-controlled transfer port interconnecting adjacent portions of said first and second chambers, a valve controlled exhaust port from said first chamber, said port connecting with the engine exterior, spark ignition means in said first chamber and closely adjacent said transfer port, and valves in said ports and controlling means for opening said transfer valve when said piston in said first chamber is near top dead center position on it''s power stroke.
Claim 6
Dependent Claim
190 words
An internal combustion engine adapted for quenched combustion separated charge operation, said engine comprising means defining first and second cylinders, each closed at one end and having their closed ends proximate one another, pistons reciprocable in said cylinders and defining therewith first and second expansible chambers at the closed ends of said first and second cylinders, respectively, said pistons being connected to a common power output mechanism for concurrent reciprocation of a four-stroke operating cycle with a phase separation not greater than one-half stroke, a valve-controlled inlet port to said first chamber, said port being connected with air-fuel mixture supply means, a valve-controlled inlet port to said second chamber, said port being connected with a source of air, a valve-controlled transfer port interconnecting adjacent portions of said first and second chambers, a valve controlled exhaust port from said first chamber, said port connecting with the engine exterior, spark ignition means in said first chamber and closely adjacent said transfer port, and valves in said ports and controlling means for opening said transfer valve when said piston in said first chamber is near top dead center position on it''s power stroke.
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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |