US3916850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intake and exhaust manifold assembly for internal combustion engine
Assignee: Honda Motor Co Ltd
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Filing: 1974-02-25
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Granted: 1975-11-04
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Expires: 1994-02-25
Abstract
Abstract An intake and exhaust manifold assembly is provided for an internal combustion engine of the type in which each main combustion chamber is connected to an auxiliary combustion chamber, respectively, through a torch nozzle. The rich mixture supplied to the auxiliary chamber is ignited to cause a torch flame to be projected through the torch nozzle to ignite a lean mixture supplied to the main chamber. The intake manifold includes a riser for the rich mixture and the lean mixture, together with intake passages for the auxiliary combustion chambers and main combustion chambers. The exhaust manifold comprises a split housing enclosing and spaced from a thin wall metal liner. The intake manifold is secured in position on top of the exhaust manifold. Heat-receiving surfaces on the intake manifold are placed above aligned openings in the liner and upper half of the housing to heat both the lean mixture and rich mixture by the heat of the exhaust gases. The liner is secured to the upper half of the split housing by means of fasteners near the aligned openings. The liner is otherwise free to move by thermal expansion relative to the enclosing housing. A baffle plate in the liner directs exhaust gases toward said aligned openings.
Inventors
- 👤 Tasuku Date
- 👤 Soichi Nakano
- 👤 Yoshitoku Iizuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:32
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/1023; F02B19/1028; F02M; F02M31/00; F02M31/02; F02M31/04; F02M31/06; F02M31/08; F02M31/087; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
232 words
A manifold system for an internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, the manifold system comprising, in combination: an intake manifold including a main intake chamber and main intake passages extending from said main intake chamber to the engine to deliver a lean air-fuel mixture to each main combustion chamber, said intake manifold also including an auxiliary intake chamber and auxiliary intake passages extending from said auxiliary intake chamber to the engine to deliver a rich air-fuel mixture to each auxiliary combustion chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer housing, said liner having pipes for collecting exhaust gases from each main combustion chamber and having an exhaust chamber connected to each said pipe, said exhaust manifold having a lateral opening, and a riser member forming a part of said intake manifold and associated with said opening to transfer heat of the exhaust gases to the intake mixtures in the main intake chamber and the auxiliary intake chamber to insure vaporization of both mixtures, the riser member having a first portion of small area adjacent the auxiliary intake chamber and a second portion of large area adjacent the main intake chamber, said first and second portions of the riser member being integrally formed.
Claim 2
Dependent Claim
232 words
A manifold system for an internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, the manifold system comprising, in combination: an intake manifold including a main intake chamber and main intake passages extending from said main intake chamber to the engine to deliver a lean air-fuel mixture to each main combustion chamber, said intake manifold also including an auxiliary intake chamber and auxiliary intake passages extending from said auxiliary intake chamber to the engine to deliver a rich air-fuel mixture to each auxiliary combustion chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer housing, said liner having pipes for collecting exhaust gases from each main combustion chamber and having an exhaust chamber connected to each said pipe, said exhaust manifold having a lateral opening, and a riser member forming a part of said intake manifold and associated with said opening to transfer heat of the exhaust gases to the intake mixtures in the main intake chamber and the auxiliary intake chamber to insure vaporization of both mixtures, the riser member having a first portion of small area adjacent the auxiliary intake chamber and a second portion of large area adjacent the main intake chamber, said first and second portions of the riser member being integrally formed.
Claim 3
Dependent Claim
35 words
The combination set forth in claim 1 in which the thick wall outer housing is of split construction comprising an upper portion and a lower portion, the upper portion being secured to the intake manifold.
Claim 4
Dependent Claim
24 words
The combination set forth in claim 2 in which the thin wall liner is secured to said upper portion of the thick wall housing.
Claim 5
Dependent Claim
33 words
The combination set forth in claim 1 in which a baffle is fixed within the exhaust chamber and directs exhaust gases toward said opening and both of said portions of said riser member.
Claim 6
Dependent Claim
30 words
The combination set forth in claim 1 in which said first portion of said riser member is positioned closer to said liner than said second portion of said riser member.
Claim 7
Dependent Claim
76 words
The combination set forth in claim 1 in which said liner collection pipes for collecting exhaust gases are mounted for thermal expansion movement relative to the engine, said liner having a single discharge pipe mounted for thermal expansion movement relative to said housing, and means for anchoring said liner at a location between said collection pipes and said discharge pipe to minimize the displacement of said collection pipes and said discharge pipe caused by thermal deformation.
Claim 8
Dependent Claim
168 words
A manifold assembly for an internal comnustion engine having a plurality of pistons each forming one wall of a plurality of combustion chambers, respectively, the combination of: an intake and exhaust manifold assembly comprising an intake manifold for supplying an air-fuel mixture to the combustion chambers, an exhaust manifold including a thick wall housing enveloping and spaced from a thin wall liner, said liner having a collection chamber connected to a plurality of exhaust pipes for receiving exhaust gases from each of said combustion chambers, the exhaust chamber of said liner and a portion of said housing having aligned lateral openings, means securing said portion of the housing to said intake manifold, said liner having a single discharge pipe extending from said exhaust chamber and projecting through said housing, and means for suspending said liner within said housing at a location between said collection pipes and said discharge pipe to minimize thermal deformations, a portion of said intake manifold being placed to be heated through said aligned openings.
Claim 9
Dependent Claim
168 words
A manifold assembly for an internal comnustion engine having a plurality of pistons each forming one wall of a plurality of combustion chambers, respectively, the combination of: an intake and exhaust manifold assembly comprising an intake manifold for supplying an air-fuel mixture to the combustion chambers, an exhaust manifold including a thick wall housing enveloping and spaced from a thin wall liner, said liner having a collection chamber connected to a plurality of exhaust pipes for receiving exhaust gases from each of said combustion chambers, the exhaust chamber of said liner and a portion of said housing having aligned lateral openings, means securing said portion of the housing to said intake manifold, said liner having a single discharge pipe extending from said exhaust chamber and projecting through said housing, and means for suspending said liner within said housing at a location between said collection pipes and said discharge pipe to minimize thermal deformations, a portion of said intake manifold being placed to be heated through said aligned openings.
Claim 10
Dependent Claim
39 words
The manifold assembly set forth in claim 7 in which the thick wall housing is of split construction having an upper portion and a lower portion, the upper portion containing the opening and being secured to the inlet manifold.
Claim 11
Dependent Claim
195 words
A manifold system for an internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, the manifold system comprising, in combination: an intake manifold including a main intake chamber and a main intake passageway extending from said main intake chamber to the engine to deliver a lean air-fuel mixture to each main combustion chamber, said intake manifold also including an auxiliary intake chamber and an auxiliary intake passageway extending from said auxiliary intake chamber to the engine to deliver a rich air-fuel mixture to each auxiliary combustion chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer cover, said liner having an exhaust passageway for collecting exhaust gases from each main combustion chamber and having an exhaust chamber connected to each exhaust passageway, said exhaust chamber having an opening formed in a plate and an aligned opening in the outer cover formed in a flange, and fastener means for connecting the plate to the flange, said fastener means comprising the sole fixed connecting means between the liner and the outer cover.
Claim 12
Dependent Claim
195 words
A manifold system for an internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, the manifold system comprising, in combination: an intake manifold including a main intake chamber and a main intake passageway extending from said main intake chamber to the engine to deliver a lean air-fuel mixture to each main combustion chamber, said intake manifold also including an auxiliary intake chamber and an auxiliary intake passageway extending from said auxiliary intake chamber to the engine to deliver a rich air-fuel mixture to each auxiliary combustion chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer cover, said liner having an exhaust passageway for collecting exhaust gases from each main combustion chamber and having an exhaust chamber connected to each exhaust passageway, said exhaust chamber having an opening formed in a plate and an aligned opening in the outer cover formed in a flange, and fastener means for connecting the plate to the flange, said fastener means comprising the sole fixed connecting means between the liner and the outer cover.
Claim 13
Dependent Claim
27 words
The combination set forth in claim 9 in which a baffle fixed within the exhaust chamber directs exhaust gases against the riser member through said aligned openings.
Claim 14
Dependent Claim
36 words
The combination set forth in claim 9 in which the riser member has a first portion of small area adjacent the auxiliary intake chamber and a second portion of large area adjacent the main intake chamber.
Claim 15
Dependent Claim
21 words
The combination set forth in claim 11 in which said first and second portions of the riser member are integrally formed.
Claim 16
Dependent Claim
30 words
The combination set forth in claim 11 in which said first portion of the riser member is positioned closer to the liner than said second portion of the riser member.
Claim 17
Dependent Claim
238 words
In combination: a multi-cylinder internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, an intake manifold including a main intake chamber and a plurality of main intake passageways extending from said main intake chamber to the engine for connection to the main combustion chambers, said intake manifold also including an auxiliary intake chamber and a plurality of auxiliary intake passageways extending from said auxiliary intake chamber to the engine for connection to the auxiliary combustion chambers, means for delivering a lean air-fuel mixture to said main intake chamber, means for delivering a rich air-fuel mixture to said auxiliary intake chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer cover, said liner having a plurality of exhaust passageways for collecting exhaust gases from the engine and having an exhaust chamber connected to said exhaust passageways, a discharge pipe leading from the liner and extending through the outer cover, said thin wall liner and thick wall cover each having a lateral opening, said lateral openings being aligned, and a riser member formed integrally with said intake manifold and having heat transfer surfaces exposed to said lateral openings to transfer heat of the exhaust gases to the intake mixtures in the main intake chamber and the auxiliary intake chamber to insure vaporization of both mixtures.
Claim 18
Dependent Claim
238 words
In combination: a multi-cylinder internal combustion piston engine of the type having an auxiliary combustion chamber associated with each main combustion chamber and connected thereto by a torch nozzle, an intake manifold including a main intake chamber and a plurality of main intake passageways extending from said main intake chamber to the engine for connection to the main combustion chambers, said intake manifold also including an auxiliary intake chamber and a plurality of auxiliary intake passageways extending from said auxiliary intake chamber to the engine for connection to the auxiliary combustion chambers, means for delivering a lean air-fuel mixture to said main intake chamber, means for delivering a rich air-fuel mixture to said auxiliary intake chamber, an exhaust manifold comprising a thin wall metal liner enveloped by and spaced within a thick wall outer cover, said liner having a plurality of exhaust passageways for collecting exhaust gases from the engine and having an exhaust chamber connected to said exhaust passageways, a discharge pipe leading from the liner and extending through the outer cover, said thin wall liner and thick wall cover each having a lateral opening, said lateral openings being aligned, and a riser member formed integrally with said intake manifold and having heat transfer surfaces exposed to said lateral openings to transfer heat of the exhaust gases to the intake mixtures in the main intake chamber and the auxiliary intake chamber to insure vaporization of both mixtures.
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |