US3910248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch ignited reciprocatory engine and method of operating the same
Assignee: Nissan Motor Co Ltd
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Filing: 1974-02-25
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Granted: 1975-10-07
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Expires: 1994-02-25
Abstract
Abstract The ratio of the volume of air-fuel mixture fed into on antechamber opening into the main combustion to the volume fed directly into the main combustion is not more than IN ORDER TO PREVENT PREMATURE FLOW OF AIR-FUEL MIXTURE FROM THE ANTECHAMBER INTO THE MAIN COMBUSTION CHAMBER, WHERE phi IS THE RATIO OF THE ANTECHAMBER VOLUME TO THE CLEARANCE VOLUME AT TDC, Epsilon is the compression ratio, and Kappa is an empirical correction coefficient.
Inventors
- 👤 Yasuhiko Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1004; F02B19/1014; F02B19/1019; F02B19/1023; F02B19/1028; F02B19/1052; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S123/00; Y10S123/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
A method of operating a torch ignited reciprocatory engine which has a main combustion chamber and an antechamber communicating with the main combustion chamber, comprising, during the intake stroke of the engine, feeding lean and rich combustible mixtures into the main combustion chamber and the antechamber, respectively so that the ratio of the volume V2 of rich combustible mixture fed into the antechamber to the volume V1 of lean combustible mixture fed into the main combustion chamber satisfies the relation
Claim 2
Independent Claim
80 words
A method of operating a torch ignited reciprocatory engine which has a main combustion chamber and an antechamber communicating with the main combustion chamber, comprising, during the intake stroke of the engine, feeding lean and rich combustible mixtures into the main combustion chamber and the antechamber, respectively so that the ratio of the volume V2 of rich combustible mixture fed into the antechamber to the volume V1 of lean combustible mixture fed into the main combustion chamber satisfies the relation
Claim 3
Dependent Claim
25 words
A method as claimed in claim 1, wherein phi is between 0.05 and 0.3, epsilon between 7 and 10, and kappa between 0.8 and 2.0.
Claim 4
Dependent Claim
100 words
In a torch ignited reciprocatory engine having an air intake system including a main intake passageway leading into a main combustion chamber, an auxiliary intake passageway leading into the main combustion chamber through an antechamber, first valve means disposed within the main intake passageway and second valve means disposed within the auxiliary intake passageway, the improvement being in that said first and second valve means are operatively linked together so that the ratio of the flow rate V2 of a combustible mixture through said second valve means to the flow rate V1 through said first valve means satisfies the relation
Claim 5
Dependent Claim
100 words
In a torch ignited reciprocatory engine having an air intake system including a main intake passageway leading into a main combustion chamber, an auxiliary intake passageway leading into the main combustion chamber through an antechamber, first valve means disposed within the main intake passageway and second valve means disposed within the auxiliary intake passageway, the improvement being in that said first and second valve means are operatively linked together so that the ratio of the flow rate V2 of a combustible mixture through said second valve means to the flow rate V1 through said first valve means satisfies the relation
Claim 6
Dependent Claim
25 words
An engine as claimed in claim 3, wherein phi is between 0.05 and 0.3, epsilon between 7 and 10, and kappa between 0.8 and 2.0.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |