Patent US4060059A successfully refreshed from Google Patents.
US4060059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Sonex Research Inc
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Filing: 1977-05-27
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Granted: 1977-11-29
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Expires: 1997-05-27
Abstract
Abstract An internal combustion engine with greatly reduced emission of pollutants includes a piston having a piston chamber communicating through orifices with the working chamber of the cylinder and an annular balancing chamber communicating with the working chamber through balancing slots when the piston is between 20° to 30° from its bottom center position. Breathing holes are provided at the opposite end of the balancing chamber. Air from the balancing chamber flows into the working chamber in response to the vacuum therein during the intake stroke, flows from the working chamber into the piston chamber during the compression stroke, and from the piston chamber into the working chamber during the power stroke to stratify the combustion process and inhibit the emission of hydrocarbon and carbon monoxide pollutants. Some exhaust gases are admitted to the balancing chamber during the exhaust stroke to be readmitted to the working chamber during the next intake stroke. Under conditions of higher engine speed or vehicle loading, greater quantities of exhaust gases are recirculated in this manner, thereby inhibiting the emission of nitrogen oxide pollutants.
Inventors
- 👤 Florencio Blaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
F; F02; F02B; F02B47/00; F02B47/04; F02B47/08; F02B17/00; F02B21/00; F02B33/00; F02B33/02; F02B33/26; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
195 words
A method of operating an internal combustion engine having a cylinder closed at one end, a piston movable within said cylinder between a first position proximate to said one end and a second position remote from said one end to form a working chamber, said piston having a piston chamber, comprising the steps of: introducing a rich air-fuel mixture into said working chamber from said one end during an intake stroke of said piston; adding additional air to said working chamber during said intake stroke adjacent said piston as said piston approaches said second position; transferring said additional air from said working chamber to said piston chamber during a compression stroke of said piston; igniting said rich air-fuel mixture to produce a quasi-instantaneous first phase of combustion; and transferring said additional air from said piston chamber to said working chamber at an intermediate point of a power stroke of said piston in response to decreasing pressure within said working chamber as said working chamber expands following said first phase of combustion to participate in a second phase of combustion over a period of time of the unburned fuel remaining after said first phase of combustion.
Claim 2
Independent Claim
195 words
A method of operating an internal combustion engine having a cylinder closed at one end, a piston movable within said cylinder between a first position proximate to said one end and a second position remote from said one end to form a working chamber, said piston having a piston chamber, comprising the steps of: introducing a rich air-fuel mixture into said working chamber from said one end during an intake stroke of said piston; adding additional air to said working chamber during said intake stroke adjacent said piston as said piston approaches said second position; transferring said additional air from said working chamber to said piston chamber during a compression stroke of said piston; igniting said rich air-fuel mixture to produce a quasi-instantaneous first phase of combustion; and transferring said additional air from said piston chamber to said working chamber at an intermediate point of a power stroke of said piston in response to decreasing pressure within said working chamber as said working chamber expands following said first phase of combustion to participate in a second phase of combustion over a period of time of the unburned fuel remaining after said first phase of combustion.
Claim 3
Independent Claim
254 words
A method of operating an internal combustion engine having an engine chamber, a piston movable within said engine chamber to form a working chamber therewith, said engine having a power cycle with an intake event, a compression event, a power event, and an exhaust event, balancing means to admit additional air to said working chamber during said intake event, and storage means for storing said admitted air during said compression event, comprising the steps of: feeding a rich fuel-air mixture into said working chamber during said intake event; admitting additional air from said balancing means to said working chamber adjacent said storage means near the end of said intake event to form a zone in said working chamber separate from a zone containing said air-fuel mixture in response to a high vacuum condition present in said working chamber near the end of said intake event; transferring said additional air from said working chamber to said storage means during said compression event in response to a high pressure condition present in said working chamber during said compression event; igniting said rich air-fuel mixture near the beginning of said power event to form a quasi-instantaneous first combustion phase; and transferring said additional air from said storage means to said working chamber during said power event in response to a lowered pressure condition in said working chamber as said working chamber expands during said power event to form a second combustion phase over a period of time to burn the remaining fuel present in said working chamber.
Claim 4
Independent Claim
254 words
A method of operating an internal combustion engine having an engine chamber, a piston movable within said engine chamber to form a working chamber therewith, said engine having a power cycle with an intake event, a compression event, a power event, and an exhaust event, balancing means to admit additional air to said working chamber during said intake event, and storage means for storing said admitted air during said compression event, comprising the steps of: feeding a rich fuel-air mixture into said working chamber during said intake event; admitting additional air from said balancing means to said working chamber adjacent said storage means near the end of said intake event to form a zone in said working chamber separate from a zone containing said air-fuel mixture in response to a high vacuum condition present in said working chamber near the end of said intake event; transferring said additional air from said working chamber to said storage means during said compression event in response to a high pressure condition present in said working chamber during said compression event; igniting said rich air-fuel mixture near the beginning of said power event to form a quasi-instantaneous first combustion phase; and transferring said additional air from said storage means to said working chamber during said power event in response to a lowered pressure condition in said working chamber as said working chamber expands during said power event to form a second combustion phase over a period of time to burn the remaining fuel present in said working chamber.
Claim 5
Dependent Claim
71 words
A method as recited in claim 2, further comprising the step of transferring a portion of the exhaust gases in said working chamber to said balancing means during said exhaust even in response to a pressure differential between said working chamber and said balancing means to provide a mixture of said exhaust gases and additional air in said balancing means for admission to said working chamber during the next intake event.
Claim 6
Dependent Claim
30 words
A method as recited in claim 2, wherein said engine chamber is a cylinder and said intake, compression, power and exhaust events are intake, compression, power and exhaust strokes, respectively.
Claim 7
Independent Claim
199 words
A method of operating an internal combustion engine having a cylinder closed at one end, a piston movable within said cylinder between a first position proximate to said one end and a second position remote from said one end to form a working chamber, said piston having a piston chamber, comprising the steps of: introducing fuel and air into said working chamber during an intake stroke of said piston and providing a relatively rich air fuel mixture adjacent said one end and an excess of air adjacent said piston as said piston approaches said second position; transferring said excess of air from said working chamber to said piston chamber during a compression stroke of said piston; igniting said relatively rich air-fuel mixture to produce a quasi-instantaneous first phase of combustion; and transferring said excess of air from said piston chamber to said working chamber at an intermediate point of a power stroke of said piston in response to decreasing pressure within said working chamber as said working chamber expands following said first phase of combustion to participate in a second phase of combustion over a period of time of the unburned fuel remaining after said first phase of combustion.
Claim 8
Independent Claim
199 words
A method of operating an internal combustion engine having a cylinder closed at one end, a piston movable within said cylinder between a first position proximate to said one end and a second position remote from said one end to form a working chamber, said piston having a piston chamber, comprising the steps of: introducing fuel and air into said working chamber during an intake stroke of said piston and providing a relatively rich air fuel mixture adjacent said one end and an excess of air adjacent said piston as said piston approaches said second position; transferring said excess of air from said working chamber to said piston chamber during a compression stroke of said piston; igniting said relatively rich air-fuel mixture to produce a quasi-instantaneous first phase of combustion; and transferring said excess of air from said piston chamber to said working chamber at an intermediate point of a power stroke of said piston in response to decreasing pressure within said working chamber as said working chamber expands following said first phase of combustion to participate in a second phase of combustion over a period of time of the unburned fuel remaining after said first phase of combustion.
Claim 9
Independent Claim
235 words
A method of operating an internal combustion engine having an engine chamber, a piston movable within said engine chamber to form a working chamber therewith, said engine having a power cycle with an intake event, a compression event, a power event, and an exhaust event, means to admit fuel and air into said working chamber during said intake event, and storage means for storing an excess of air during said compression event, comprising the steps of: introducing fuel and air into said working chamber during said intake event and providing a relatively rich air-fuel mixture at an end of said working chamber remote from said storage means and an excess of air adjacent said storage means near the end of said intake event; transferring said excess of air from said working chamber to said storage means during said compression event in response to a high pressure condition present in said working chamber during said compression event; igniting said relatively rich air-fuel mixture near the beginning of said power event to form a quasi-instantaneous first combustion phase, and transferring said excess of air from said storage means to said working chamber during said power event in response to a lowered pressure condition in said working chamber as said working chamber expands during said power event to form a second combustion phase over a period of time to burn the remaining fuel present in said working chamber.
Claim 10
Independent Claim
235 words
A method of operating an internal combustion engine having an engine chamber, a piston movable within said engine chamber to form a working chamber therewith, said engine having a power cycle with an intake event, a compression event, a power event, and an exhaust event, means to admit fuel and air into said working chamber during said intake event, and storage means for storing an excess of air during said compression event, comprising the steps of: introducing fuel and air into said working chamber during said intake event and providing a relatively rich air-fuel mixture at an end of said working chamber remote from said storage means and an excess of air adjacent said storage means near the end of said intake event; transferring said excess of air from said working chamber to said storage means during said compression event in response to a high pressure condition present in said working chamber during said compression event; igniting said relatively rich air-fuel mixture near the beginning of said power event to form a quasi-instantaneous first combustion phase, and transferring said excess of air from said storage means to said working chamber during said power event in response to a lowered pressure condition in said working chamber as said working chamber expands during said power event to form a second combustion phase over a period of time to burn the remaining fuel present in said working chamber.
Claim 11
Dependent Claim
30 words
A method as recited in claim 6, wherein said engine chamber is a cylinder and said intake, compression, power and exhaust events are intake,, compression, power and exhaust strokes, respectively.
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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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |