US3919984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine with auxiliary chamber having variable size openings
Assignee: Honda Motor Co Ltd
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Filing: 1974-01-23
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Granted: 1975-11-18
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Expires: 1994-01-23
Abstract
Abstract A three-valve spark-ignition internal combustion piston engine has an auxiliary combustion chamber connected to each main combustion chamber through a torch nozzle. The intake valve for the auxiliary chamber is provided with a skirt for varying the effective size of the torch nozzle under controlled turning movement of the intake valve stem. The effective size of a restricted opening which connects the auxiliary chamber to an adjacent chamber containing the spark plug electrodes is also changed by means of a skirt on the auxiliary intake valve.
Inventors
- 👤 Shizuo Yagi
- 👤 Kazuo Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:14
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/1023; F02B19/1028; F02B19/1047; F02B19/1061; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
In a spark-ignition internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, the combination of: means including a first intake passage for delivering a lean mixture to the main chamber, and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, a spark plug having electrodes positioned in a space communicating with the auxiliary chamber through a restricted opening, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve asembly having a movable valve element, and means on the movable valve element projecting into the auxiliary chamber to vary the effective size of said restricted opening.
Claim 2
Dependent Claim
122 words
In a spark-ignition internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, the combination of: means including a first intake passage for delivering a lean mixture to the main chamber, and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, a spark plug having electrodes positioned in a space communicating with the auxiliary chamber through a restricted opening, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve asembly having a movable valve element, and means on the movable valve element projecting into the auxiliary chamber to vary the effective size of said restricted opening.
Claim 3
Dependent Claim
24 words
The combination set forth in claim 1 in which the latter said means also acts to very the effective size of the torch nozzle.
Claim 4
Dependent Claim
31 words
The combination set forth in claim 1 wherein the latter said means comprises a skirt shaped so that axial movement thereof does not vary the effective size of the torch nozzle.
Claim 5
Dependent Claim
181 words
In an internal combustion piston engine, the combination of: a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle opening, means including a first intake passage for delivering a lean mixture to the main chamber and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, a spark plug having electrodes positioned in a plug chamber adjacent the auxiliary combustion chamber, means forming a restricted opening connecting the plug chamber to the auxiliary chamber, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve assembly having a stationary seat and having a stem provided with an enlarged head for closing against the seat, a skirt on the enlarged head projecting inTo said auxiliary chamber adjacent one of said openings, means including a cam for moving the stem axially to open and close the valve head with respect to the stationary seat, and means for turning the stem to cause said skirt to vary the effective size of the latter said opening.
Claim 6
Dependent Claim
181 words
In an internal combustion piston engine, the combination of: a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle opening, means including a first intake passage for delivering a lean mixture to the main chamber and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, a spark plug having electrodes positioned in a plug chamber adjacent the auxiliary combustion chamber, means forming a restricted opening connecting the plug chamber to the auxiliary chamber, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve assembly having a stationary seat and having a stem provided with an enlarged head for closing against the seat, a skirt on the enlarged head projecting inTo said auxiliary chamber adjacent one of said openings, means including a cam for moving the stem axially to open and close the valve head with respect to the stationary seat, and means for turning the stem to cause said skirt to vary the effective size of the latter said opening.
Claim 7
Dependent Claim
28 words
The combination set forth in claim 4 wherein the skirt is shaped so that axial movement thereof does not vary the effective size of the latter said opening.
Claim 8
Dependent Claim
26 words
The combination set forth in claim 4 wherein the skirt is shaped so that axial movement thereof changes the effective size of the latter said opening.
Claim 9
Dependent Claim
207 words
In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, and having means including a first intake passage for delivering a lean mixture to the main chamber and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, the improvement comprising, in combination: a spark plug having electrodes positioned in a plug chamber adjacent the auxiliary combustion chamber, means forming a restricted opening connecting the plug chamber to the auxiliary chamber, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve assembly having a stationary seat and having a stem provided with an enlarged head for closing against the seat, two skirts on the enlarged head each projecting away from said stem and into said auxiliary chamber, one of the skirts extending near the torch nozzle and the other skirt extending near said restricted opening, means including a cam for moving the stem axially to open and close the valve head with respect to the stationary seat, and means for turning the stem to cause said skirts to vary the effective sized of the torch nozzle and said restricted opening.
Claim 10
Dependent Claim
207 words
In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, and having means including a first intake passage for delivering a lean mixture to the main chamber and means including a second intake passage for delivering a rich mixture to the auxiliary chamber, the improvement comprising, in combination: a spark plug having electrodes positioned in a plug chamber adjacent the auxiliary combustion chamber, means forming a restricted opening connecting the plug chamber to the auxiliary chamber, an auxiliary intake valve assembly positioned to control flow through the second intake passage into the auxiliary chamber, said intake valve assembly having a stationary seat and having a stem provided with an enlarged head for closing against the seat, two skirts on the enlarged head each projecting away from said stem and into said auxiliary chamber, one of the skirts extending near the torch nozzle and the other skirt extending near said restricted opening, means including a cam for moving the stem axially to open and close the valve head with respect to the stationary seat, and means for turning the stem to cause said skirts to vary the effective sized of the torch nozzle and said restricted opening.
Claim 11
Independent Claim
97 words
The method of operating an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, comprising the steps of: delivering a lean mixture to the main chamber, delivering a rich mixture to the auxiliary chamber, sparkigniting the mixture in the auxiliary chamber through a restricted opening to project a flame through the torch nozzle into the main chamber, controlling flow of rich mixture into the auxiliary chamber, and varying the effective size of the restricted opening throughout a predetermined range only under varying opeerating conditions of the engine.
Claim 12
Independent Claim
97 words
The method of operating an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, comprising the steps of: delivering a lean mixture to the main chamber, delivering a rich mixture to the auxiliary chamber, sparkigniting the mixture in the auxiliary chamber through a restricted opening to project a flame through the torch nozzle into the main chamber, controlling flow of rich mixture into the auxiliary chamber, and varying the effective size of the restricted opening throughout a predetermined range only under varying opeerating conditions of the engine.
Claim 13
Independent Claim
101 words
The method of operating an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, comprising the steps of: delivering a lean mixture to the main chamber, delivering a rich mixture to the auxiliary chamber, sparkigniting the mixture in the auxiliary chamber through a restricted opening to project a flame through the torch nozzle into the main chamber, controlling flow of rich mixture into the auxiliary chamber, and varying the effective sizes of the torch nozzle and the restricted opening throughout a predetermined range only under varying operating conditions of the engine.
Claim 14
Independent Claim
101 words
The method of operating an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, comprising the steps of: delivering a lean mixture to the main chamber, delivering a rich mixture to the auxiliary chamber, sparkigniting the mixture in the auxiliary chamber through a restricted opening to project a flame through the torch nozzle into the main chamber, controlling flow of rich mixture into the auxiliary chamber, and varying the effective sizes of the torch nozzle and the restricted opening throughout a predetermined range only under varying operating conditions of the engine.
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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |