US3823702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine manifold and fluid flow configuration
Assignee: Individual
•
Filing: 1971-01-11
•
Granted: 1974-07-16
•
Expires: 1991-01-11
Abstract
Abstract The manifold and cylinder head structures of an internal combustion engine are provided with fluid flow passageways extending from the manifold plenum to the valve ports of the engine cylinders, with fluid flow control members disposed in the passageways and defining peripheral restrictions therein. In some modifications the members are integrally formed in a gasket sandwiched between the manifold and the cylinder head and having openings registered with the passageways, which openings have a cross sectional area less than the passageway cross sectional areas. In some modifications the insert members are elongated and increase in cross sectional area from the upstream to the downstream ends. In some modifications, each insert member has an integral flange at either end or intermediate the ends, the flange being retained between the manifold and the cylinder head. In some modifications a plurality of members are formed integrally in a single gasket element sandwiched between the manifold and the cylinder head. In some modifications, the insert members are integral with the manifold or with the cylinder head port runners. In some modifications, the intake passageway insert members are press fit or otherwise secured closely adjacent the intake ports.
Inventors
- 👤 C Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
F; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4392
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
179 words
A manifold and port runner structure for an internal combustion engine having a cylinder head provided with combustion chambers and valve ports opening thereto, said structure comprising: a. port runners defining fluid passages extending from said valve ports to the exterior of said cylinder head, b. a manifold secured to said cylinder head and having a plenum and fluid passages registering and openly connected with said port runner fluid passages, said passages thereby forming separate fluid flow passageways connecting said manifold plenum with said valve ports, c. a fluid flow control member formed of sheet material and disposed within at least one of said passageways, said member formed with an opening having at least in one transverse crosssection a cross-sectional area less than the smallest transverse cross-sectional area of said passageway and defining a peripheral restriction therein, and d. said opening in said member increasing in cross-sectional area from its upstream end to its downstream end with respect to fluid flow in said passageway, the included angle of crosssectional area divergence of said opening being no greater than 10*.
Claim 2
Dependent Claim
179 words
A manifold and port runner structure for an internal combustion engine having a cylinder head provided with combustion chambers and valve ports opening thereto, said structure comprising: a. port runners defining fluid passages extending from said valve ports to the exterior of said cylinder head, b. a manifold secured to said cylinder head and having a plenum and fluid passages registering and openly connected with said port runner fluid passages, said passages thereby forming separate fluid flow passageways connecting said manifold plenum with said valve ports, c. a fluid flow control member formed of sheet material and disposed within at least one of said passageways, said member formed with an opening having at least in one transverse crosssection a cross-sectional area less than the smallest transverse cross-sectional area of said passageway and defining a peripheral restriction therein, and d. said opening in said member increasing in cross-sectional area from its upstream end to its downstream end with respect to fluid flow in said passageway, the included angle of crosssectional area divergence of said opening being no greater than 10*.
Claim 3
Dependent Claim
21 words
The structure as defined in claim 1 and in which said member is disposed substantially entirely within said manifold fluid passage.
Claim 4
Dependent Claim
22 words
The structure as defined in claim 1 and in which said member is disposed substantially entirely within said port runner fluid passage.
Claim 5
Dependent Claim
28 words
The structure as defined in claim 1 and in which said member is disposed partially within said manifold fluid passage and partially within said port runner fluid passage.
Claim 6
Dependent Claim
31 words
The structure as defined in claim 1 and in which the peripheral edge of the larger cross-sectional area end of said member is adjacent the peripheral wall surface of a passageway.
Claim 7
Dependent Claim
24 words
The structure as defined in claim 1 and in which said member comprises a gasket sealingly sandwiched between said manifold and said cylinder head.
Claim 8
Dependent Claim
34 words
The structure as defined in claim 1 and in which said member comprises an integral gasket sealingly sandwiched between said manifold and said cylinder head and having openings disposed in a plurality of passageways.
Claim 9
Dependent Claim
74 words
The structure as defined in claim 1 and in which said member is formed to provide a peripheral space around the exterior of said member and facing toward the upstream end thereof, and arranged to retain liquid fuel until vaporization thereof or until it can creep inwardly to the upstream end of said opening, said upstream end having an edge effective to atomize said liquid by the shearing action of flow into said member.
Claim 10
Dependent Claim
41 words
The structure as defined in claim 1 and in which one of said valve ports of each cylinder combustion chamber is an exhaust port, and said manifold and port runner fluid passages define an exhaust passageway open to said exhaust port.
Claim 11
Dependent Claim
22 words
The structure as defined in claim 1 wherein an end of said member is formed to be press fit into said passageway.
Claim 12
Dependent Claim
26 words
The structure as in claim 1 wherein said passageway has a peripheral groove, and one end of said member has a flange retained in said groove.
Claim 13
Dependent Claim
33 words
The structure as defined in claim 1 and in which said member has a peripheral outwardly extending flange disposed and secured between abutting peripheral passage edges of said manifold and said cylinder head.
Claim 14
Dependent Claim
23 words
The structure as defined in claim 12 and in which said flange is connected to the larger cross-sectional area end of said member.
Claim 15
Dependent Claim
24 words
The structure as defined in claim 12 and in which said flange is connected to the smallEr cross sectional area end of said member.
Claim 16
Dependent Claim
20 words
The structure as defined in claim 12 and in which said flange is connected intermediate the ends of said member.
Claim 17
Dependent Claim
41 words
The structure as defined in claim 1 and in which one of said valve ports of each cylinder combustion chamber is an intake port, and said manifold and port runner fluid passages define an intake passageway open to an intake port.
Claim 18
Dependent Claim
22 words
The structure as defined in claim 16 wherein said member is disposed within said port runner fluid passage adjacent said intake port.
Claim 19
Dependent Claim
28 words
The structure as defined in claim 17 wherein the end of said member closest to said intake port is formed to be press fit into said port runner.
Claim 20
Dependent Claim
39 words
The structure as defined in claim 17 wherein said port runner fluid passage adjacent said intake port has a peripheral groove, and the end of said member closest to said intake port has a flange retained in said groove.
Claim 21
Dependent Claim
18 words
The structure as defined in claim 1 and in which similar separate members are disposed in each passageway.
Claim 22
Dependent Claim
20 words
The structure as defined in claim 20 and in which the openings in said members are all of equal length.
Claim 23
Dependent Claim
70 words
The structure as defined in claim 1 and in which one of said valve ports of each cylinder combustion chamber is an intake port, and said manifold and port runner fluid passages define separate intake passageways open to said intake ports, and similar members are disposed in each passageway, the total cross-sectional areas of said member openings being less than could accommodate the total flow available from the manifold plenum.
Claim 24
Dependent Claim
20 words
The structure as defined in claim 22 and in which the openings in said members are all of equal length.
Claim 25
Dependent Claim
70 words
The structure as defined in claim 1 and in which one of said valve ports of each cylinder combustion chamber is an exhaust port, and said manifold and port runner fluid passages define separate exhaust passageways open to said exhaust ports, and similar members are disposed in each passageway, the total cross-sectional areas of said member openings being less than could accommodate the total flow available from said combustion chambers.
Claim 26
Dependent Claim
20 words
The structure as defined in claim 24 and in which the openings in said members are all of equal length.
Claim 27
Dependent Claim
108 words
In an internal combustion engine cylinder head structure provided with a combustion chamber and an intake port runner terminating in an intake valve port opening to said combustion chamber, the improvement comprising a member associated with said port runner and forming a peripheral recess facing upstream of flow through said port runner and positioned to trap liquid entrained in gases flowing through said port runner to said intake valve port, and to retain said liquid until it vaporizes or creeps inward into the upstream end of said member, said upstream end having an edge effective to atomize said liquid by shearing action of gas flow into said member.
Claim 28
Dependent Claim
108 words
In an internal combustion engine cylinder head structure provided with a combustion chamber and an intake port runner terminating in an intake valve port opening to said combustion chamber, the improvement comprising a member associated with said port runner and forming a peripheral recess facing upstream of flow through said port runner and positioned to trap liquid entrained in gases flowing through said port runner to said intake valve port, and to retain said liquid until it vaporizes or creeps inward into the upstream end of said member, said upstream end having an edge effective to atomize said liquid by shearing action of gas flow into said member.
Claim 29
Dependent Claim
17 words
The improvement as defined in claim 26 wherein said member is disposed adjacent said intake valve port.
Claim 30
Dependent Claim
19 words
The improvement as defined in claim 26 wherein said member comprises a separable element affixed within said port runner.
Claim 31
Dependent Claim
16 words
The improvement as defined in claim 26 wherein said member is integral with said cylinder head.
Claim 32
Dependent Claim
14 words
The improvement as defined in claim 26 wherein said recess encircles said valve port.
Claim 33
Dependent Claim
43 words
The improvement as defined in claim 26 including an intake manifold secured to said cylinder head structure and having an intake opening registering with said port runner, wherein said member is adajcent the area of registration of said manifold and said port runner.
Claim 34
Dependent Claim
23 words
The improvement as defined in claim 31 wherein said member comprises a separable element affixed between said cylinder head structure and said manifold.
Claim 35
Dependent Claim
17 words
The improvement as defined in claim 31 wherein said recess is disposed within said cylinder head structure.
Claim 36
Dependent Claim
23 words
The improvement as defined in claim 31 wherein said recess is disposed at the juncture of said cylinder head structure and Said manifold.
Claim 37
Dependent Claim
15 words
The improvement as defined in claim 31 wherein said recess is disposed within said manifold.
Claim 38
Dependent Claim
15 words
The improvement as defined in claim 31 wherein said member is integral with said manifold.
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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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |