US3861375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head for a diesel engine
Assignee: Automobiles M Berliet SA
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Filing: 1972-02-16
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Granted: 1975-01-21
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Expires: 1992-02-16
Abstract
Abstract A diesel engine cylinder head which covers at least two ajoining cylinders. Each cylinder includes two exhaust valves and two inlet valves arranged about a central bore which receives an injector. An inlet conduit opens on one face of the cylinder head and leads to the two inlet valves. The inlet conduit includes a rectangular section which is common to the two inlet valves of a cylinder, and a longitudinal partition which separates a portion of the inlet valve into two smaller conduits, each of these smaller conduits opening to a different one of the inlet valves in a cylinder. An exhaust conduit opens to a side face of the cylinder head opposite that face at which the inlet conduit opens. The exhaust conduit leads to both exhaust valves in a cylinder, and includes a rectangular section over a length leading to the exhaust valve nearest the side face of the cylinder head at which the exhaust conduit opens, and is generally curved inwardly toward the axis of the cylinder along its length extending from the exhaust valve nearest the side face of the cylinder head at which the exhaust conduit opens to the exhaust valve furthest from the side face of the cylinder head at which the exhaust conduit opens.
Inventors
- 👤 Jean Excoffon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:54
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02B; F02B2275/00; F02B2275/14; F02B3/00; F02B3/06; F02F2001/244; F02F2001/247; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
365 words
In a diesel engine of the type having a plurality of cylinders wherein each cylinder has two axially spaced inlet valves and Two axially spaced exhaust valves arranged about a central injector-receiving bore, the engine being provided with a cylinder head having a joining plane for two or more adjacent cylinders, and having bores to receive the stems of the inlet valves and the exhaust valves, the improvement which comprises: a. for each of the cylinders, a common inlet conduit extending from a first side face of the cylinder head into the interior of the head and having a rectilinear configuration, a partition perpendicular to said joining plane disposed within the head and extending between the two inlet valves to divide the common inlet conduit into two smaller conduits, the two smaller conduits being co-planar with respect to each other, each of the two smaller conduits being associated with one of the inlet valves, one of the two smaller conduits extends to the inlet valve closest to the first side face of the cylinder head and opens directly into a recess for the inlet valve, the other one of the two smaller conduits extends to the inlet valve most distant from the first side face of the cylinder head and is curved inwardly toward the axis of the cylinder, b. for each of the cylinders, a common exhaust conduit opening to a second side face of the cylinder head opposite to the first side face, the exhaust conduit having a substantially rectilinear section over a length leading to a first of the two exhaust valves which is closest to the second side face and thereafter being curved inwardly towards the axis of the cylinder over a length leading to a second of the two exhaust valves, and wherein c. the axes of the two inlet valve stem bores are disposed in a plane extending perpendicular to said joining plane of the cylinder head and perpendicular to the first side face of the cylinder head, and the axes of the exhaust valve stem bores are disposed in a plane perpendicular to the second side face of the cylinder head, and the adjacent cylinder being analogously configured.
Claim 2
Dependent Claim
365 words
In a diesel engine of the type having a plurality of cylinders wherein each cylinder has two axially spaced inlet valves and Two axially spaced exhaust valves arranged about a central injector-receiving bore, the engine being provided with a cylinder head having a joining plane for two or more adjacent cylinders, and having bores to receive the stems of the inlet valves and the exhaust valves, the improvement which comprises: a. for each of the cylinders, a common inlet conduit extending from a first side face of the cylinder head into the interior of the head and having a rectilinear configuration, a partition perpendicular to said joining plane disposed within the head and extending between the two inlet valves to divide the common inlet conduit into two smaller conduits, the two smaller conduits being co-planar with respect to each other, each of the two smaller conduits being associated with one of the inlet valves, one of the two smaller conduits extends to the inlet valve closest to the first side face of the cylinder head and opens directly into a recess for the inlet valve, the other one of the two smaller conduits extends to the inlet valve most distant from the first side face of the cylinder head and is curved inwardly toward the axis of the cylinder, b. for each of the cylinders, a common exhaust conduit opening to a second side face of the cylinder head opposite to the first side face, the exhaust conduit having a substantially rectilinear section over a length leading to a first of the two exhaust valves which is closest to the second side face and thereafter being curved inwardly towards the axis of the cylinder over a length leading to a second of the two exhaust valves, and wherein c. the axes of the two inlet valve stem bores are disposed in a plane extending perpendicular to said joining plane of the cylinder head and perpendicular to the first side face of the cylinder head, and the axes of the exhaust valve stem bores are disposed in a plane perpendicular to the second side face of the cylinder head, and the adjacent cylinder being analogously configured.
Claim 3
Dependent Claim
67 words
A cylinder head for a diesel engine as claimed in claim 1, in which the head is dimensioned to cover two cylinders of the engine, the arrangement of the valves and of the inlet and exhaust conduits being such that the two exhaust conduits open on the same said second side face of the cylinder head, and the two inlet conduits open on the first side face.
Claim 4
Dependent Claim
29 words
A cylinder head for a diesel engine as claimed in claim 1 wherein the partition length is equal to about one half the total length of the inlet conduit.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |