US3882830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber device for internal combustion engines
Assignee: Honda Motor Co Ltd
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Filing: 1973-06-29
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Granted: 1975-05-13
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Expires: 1993-06-29
Abstract
Abstract An internal combustion engine has a main combustion chamber supplied with a lean mixture and has an auxiliary combustion chamber supplied with a rich mixture. The chambers are connected by a restricted torch nozzle passage. A spark plug communicating with the auxiliary chamber ignites the rich mixture and causes a flame to project through the torch nozzle passage to burn the lean mixture in the main chamber. The auxiliary combustion chamber is defined within a replaceable flanged cup which has a first aperture communicating with a torch conducting opening both forming the restricted torch nozzle passage and a second aperture communicating with a spark plug. Proper positioning of the second aperture with respect to the spark plug recess automatically places the first aperture in proper alignment with the torch conducting opening.
Inventors
- 👤 Tadashi Kume
- 👤 Kimio Shinmura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:54
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: 6
Claim 1
Independent Claim
159 words
In an internal combustion engine having a main combustion chamber, the combination of: walls forming a cavity, a cup having a cylindrical side wall closed at one end by a bottom wall, the cup being insertable into the cavity along the axis of the cylindrical wall, to define an auxiliary combustion chamber within the cup, means forming a restricted torch nozzle passage connecting the auxiliary chamber and the main chamber, said passage including a first aperture positioned in said cup at one side of the said axis, said cavity walls forming an ignition recess adjacent said cup, a spark plug having electrodes positioned in said recess spaced from and outside said cup, said cup having a second aperture communicating with said ignition recess, whereby alignment of said second aperture with said ignition recess insures proper orientation of said first aperture, and means including a valved intake passage for supplying a rich combustible mixture into the interior of said cup.
Claim 2
Dependent Claim
159 words
In an internal combustion engine having a main combustion chamber, the combination of: walls forming a cavity, a cup having a cylindrical side wall closed at one end by a bottom wall, the cup being insertable into the cavity along the axis of the cylindrical wall, to define an auxiliary combustion chamber within the cup, means forming a restricted torch nozzle passage connecting the auxiliary chamber and the main chamber, said passage including a first aperture positioned in said cup at one side of the said axis, said cavity walls forming an ignition recess adjacent said cup, a spark plug having electrodes positioned in said recess spaced from and outside said cup, said cup having a second aperture communicating with said ignition recess, whereby alignment of said second aperture with said ignition recess insures proper orientation of said first aperture, and means including a valved intake passage for supplying a rich combustible mixture into the interior of said cup.
Claim 3
Dependent Claim
52 words
The combination set forth in claim 1 in which the cavity walls are provided on a stationary member and wherein the restricted passage includes a torch conducting opening in said stationary member, said first aperture being in alignment with the torch conducting opening when the second aperture is aligned with said recess.
Claim 4
Dependent Claim
40 words
The combination set forth in claim 1 wherein the spark plug electrodes are positioned in the recess so as to avoid direct contact by the rich mixture being admitted through the valved intake passage into the interior of said cup.
Claim 5
Dependent Claim
21 words
The combination set forth in claim 1 wherein means are provided for removably securing said cup in position within said cavity.
Claim 6
Dependent Claim
34 words
The combination set forth in claim 1 in which the cup has an open end provided with an external flange, and wherein means are provided for clamping the cup in position within said cavity.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |