Patent US3844259A successfully refreshed from Google Patents.
US3844259A
Expired / Lapsed
US
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Auxiliary chamber construction for internal combustion
Assignee: Honda Motor Co Ltd
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Filing: 1972-11-29
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Granted: 1974-10-29
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Expires: 1992-11-29
Abstract
Abstract An internal combustion engine has a main combustion chamber and an auxiliary combustion chamber defined within a thin-wall metallic cup formed of heat resistant material. The cup has a first aperture communicating with the main combustion chamber and a second aperture communicating with a spark plug. A first inlet valve introduces a lean combustible mixture into the main combustion chamber and a second inlet valve introduces a rich combustible mixture into the interior of the cup. A ported guide for the auxiliary inlet valve clamps a flange of the cup to hold it in place.
Inventors
- 👤 U Asaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:19
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1004; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
In an internal combustion engine, the combination of: walls forming a main combustion chamber, walls forming a cavity for an auxiliary combustion chamber, a thin wall metallic cup formed of heat resistance material positioned in said cavity, said cup having a round bottom closing said cavity with respect to said main combustion chamber, a portion of said round bottom being exposed to said main combustion chamber, a spark plug supported near said cup having its electrodes outside said cup, said cup having a first aperture in said round bottom communicating with the main combustion chamber and a second aperture communicating with the spark plug electrodes, the interior of the cup comprising an auxiliary combustion chamber, valve means for introducing a lean combustible mixture into the main combustion chamber, and additional valve means for introducing a rich combustible mixture into the interior of said cup.
Claim 2
Dependent Claim
144 words
In an internal combustion engine, the combination of: walls forming a main combustion chamber, walls forming a cavity for an auxiliary combustion chamber, a thin wall metallic cup formed of heat resistance material positioned in said cavity, said cup having a round bottom closing said cavity with respect to said main combustion chamber, a portion of said round bottom being exposed to said main combustion chamber, a spark plug supported near said cup having its electrodes outside said cup, said cup having a first aperture in said round bottom communicating with the main combustion chamber and a second aperture communicating with the spark plug electrodes, the interior of the cup comprising an auxiliary combustion chamber, valve means for introducing a lean combustible mixture into the main combustion chamber, and additional valve means for introducing a rich combustible mixture into the interior of said cup.
Claim 3
Dependent Claim
38 words
The combination set forth in claim 1 in which a ported guide member slidably supports a valve for the auxiliary combustion chamber, a flange on said cup being removably clamped in place by means of said guide member.
References Cited (Backward Citations)
US1616157A
Cited
FR671749A
Cited
US2065419A
Cited
US2435659A
Cited
DE872883C
Cited
GB784481A
Cited
US3140697A
Cited
US3508530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |