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US3924592A
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US
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Intake system for three-valve internal combustion engine
Assignee: Honda Motor Co Ltd
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Filing: 1973-11-29
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Granted: 1975-12-09
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Expires: 1993-11-29
Abstract
Abstract A three-valve internal combustion multi-cylinder engine has all of the cylinders in line, and each cylinder has a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle. A first intake passage delivers a rich mixture from a first carburetor to each of the auxiliary combustion chambers, and a second intake passage delivers a lean mixture to each of the main chambers. The engine is of the cross-flow in-line type because the said second intake passages are located on one side of the line of cylinders, and the exhaust passages are located on the other side. Said first intake passage includes a transverse primary passage symmetrically connected to two longitudinal passages of equal length, and the longitudinal passages are each connected to two branch passages of equal length, the branch passages each being connected to one of the auxiliary chambers, respectively, so that the rich mixture is heated by the exhaust gases through a common wall. The common wall is provided with fins projecting into the exhaust passages.
Inventors
- 👤 Kiyoshi Miyaki
- 👤 Hiroshi Kogure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:03
CPC Classifications
F; F02; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/1023; F02B19/1028; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
In a four cylinder spark-ignition internal combustion piston engine, all of the cylinders being in line, each cylinder having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, the combination of: walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to two branch passages of equal length, each of said branch passages being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with two adjacent exhaust passages, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 2
Dependent Claim
199 words
In a four cylinder spark-ignition internal combustion piston engine, all of the cylinders being in line, each cylinder having a main combustion chamber and an auxiliary combustion chamber connected by a torch nozzle, the combination of: walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to two branch passages of equal length, each of said branch passages being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with two adjacent exhaust passages, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 3
Dependent Claim
21 words
The combination set forth in claim 1 in which said common wall is provided with fins projecting into said exhaust passages.
Claim 4
Dependent Claim
207 words
In a multi-cylinder spark-ignition internal combustion piston engine, all of the cylinders being in line, the combination of: a main combustion chamber associated with each piston, auxiliary combustion chambers, one being connected by a torch nozzle to each of said main combustion chambers, respectively, walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to two branch passages of equal length, each of said branch passages being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with two adjacent exhaust passages, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 5
Dependent Claim
207 words
In a multi-cylinder spark-ignition internal combustion piston engine, all of the cylinders being in line, the combination of: a main combustion chamber associated with each piston, auxiliary combustion chambers, one being connected by a torch nozzle to each of said main combustion chambers, respectively, walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to two branch passages of equal length, each of said branch passages being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with two adjacent exhaust passages, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 6
Dependent Claim
21 words
The combination set forth in claim 3 in which said common wall is provided with fins projecting into said exhaust passages.
Claim 7
Dependent Claim
212 words
In a spark-ignition internal combustion engine having at least two adjacent cylinders with parallel axes, the combination of: a main combustion chamber associated with each piston, an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by means of a torch nozzle, respectively, walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to at least one branch passage, said branch passages being of equal length and each being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with an adjacent exhaust passage, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 8
Dependent Claim
212 words
In a spark-ignition internal combustion engine having at least two adjacent cylinders with parallel axes, the combination of: a main combustion chamber associated with each piston, an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by means of a torch nozzle, respectively, walls forming exhaust passages leading from each of the main combustion chambers, respectively, on one side of the line of cylinders, intake passage means on the other side of the line of cylinders for delivering a lean mixture to each of said main combustion chambers, additional intake passage means for delivering a rich mixture to each of said auxiliary combustion chambers, said additional intake passage means including a transverse primary passage extending across the line of cylinders and symmetrically connected to two longitudinal passages of equal length on the same side of the line of cylinders as said exhaust passages, said longitudinal passages each being connected to at least one branch passage, said branch passages being of equal length and each being connected to one of said auxiliary chambers, respectively, each longitudinal passage having a common wall with an adjacent exhaust passage, respectively, whereby the rich mixture being delivered through said additional intake passage means is heated by exhaust gases discharged from the main combustion chambers.
Claim 9
Dependent Claim
21 words
The combination set forth in claim 5 in which said common wall is provided with fins projecting into said exhaust passage.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |