Cylinder head

Patent metadata

Field	Value
Publication number	US-9739376-B2
Application number	US-201314426064-A
Country	US
Kind code	B2
Filing date	Dec 3, 2013
Priority date	Dec 7, 2012
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A cylinder head includes a plurality of exhaust ports provided corresponding to a plurality of cylinders, and configured to converge outlets of the exhaust ports inside the cylinder head, at least one of the exhaust ports not being provided with a water jacket there above, and a pair of oil passages arranged so as to sandwich the at least one of the exhaust ports above which the water jacket is not provided. An inclined surface provided on an upper surface of the cylinder head and positioned between the pair of oil passages, the inclined surface being inclined from one oil passage, of the pair of oil passages, toward the other oil passage.

First claim

The invention claimed is:

1. A cylinder head comprising:
a plurality of exhaust ports provided corresponding to a plurality of cylinders, the plurality of exhaust ports being adjacent one another in a cylinder arrangement direction, the plurality of exhaust ports being configured to converge outlets of the exhaust ports inside the cylinder head, an outside one of the exhaust ports above which a water jacket is not provided and an adjacent inside one of the exhaust ports above which the water jacket is provided; and
a pair of oil passages arranged so as to sandwich the outside one of the exhaust ports above which the water jacket is not provided, wherein
an inclined surface provided on an upper surface of the cylinder head, the inclined surface being positioned between the pair of oil passages, and the inclined surface being inclined in the cylinder arrangement direction from one oil passage, of the pair of oil passages, toward the oil passage of the pair of oil passages.

2. The cylinder head according to claim 1 , wherein
one oil passage, of the pair of oil passages, is positioned on an inside, in the cylinder arrangement direction, of the cylinder head;
the other oil passage, of the pair of oil passages, is positioned on an outside in the cylinder arrangement direction; and
the inclined surface of the cylinder head is positioned between the pair of oil passages, and is inclined such that oil flows from the oil passage positioned on the inside toward the oil passage positioned on the outside.

3. The cylinder head according to claim 1 , wherein
one oil passage, of the pair of oil passages, is positioned on an inside, in a cylinder arrangement direction, of the cylinder head;
the other oil passage, of the pair of oil passages, is positioned on an outside in the cylinder arrangement direction; and
the inclined surface of the cylinder head is positioned between the pair of oil passages, the inclined surface corresponding tot the oil passage positioned on the inside is in a position higher than a position of the inclined surface corresponding to the oil passage positioned on the outside.

4. The cylinder head according to claim 2 , wherein
a length of the oil passage, of the pair of oil passages, positioned on the outside in the cylinder arrangement direction is shorter than a length of the oil passage positioned on the inside in the cylinder arrangement direction.

5. The cylinder head according to claim 1 , wherein the inclined surface of the cylinder head is positioned between the pair of oil passages and the inclined surface is inclined relative to an axial direction of the oil passages.

6. The cylinder head according claim 1 , wherein
of the exhaust ports corresponding to the plurality of cylinders, a length of the exhaust port provided on an outside in a cylinder arrangement direction is made longer than a length of the exhaust port provided on an inside in the cylinder arrangement direction.

Assignees

• Horie Nobuhiko
• Araki Yukari
• Shitara Tatsuo
• Toyota Motor Co Ltd

Inventors

• Horie Nobuhiko
• Araki Yukari
• Shitara Tatsuo

Classifications

• F16J10/02 Primary

  Cylinders designed to receive moving pistons or plungers · CPC title

• F02F1/38 Primary

  the cylinder heads being of overhead valve type · CPC title

• F01M11/02

  Arrangements of lubricant conduits · CPC title

• F02F1/243 Primary

  Cylinder heads and inlet or exhaust manifolds integrally cast together · CPC title

• F01M2011/023

  between oil sump and cylinder head · CPC title