US 6,981,473 B2 | ||
Cylinder head for an internal combustion engine | ||
Toru Gunji, Saitama (Japan); and Hiromi Sumi, Saitama (Japan) | ||
Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
Filed on Jan. 30, 2004, as Appl. No. 10/769,284. | ||
Claims priority of application No. 2003-030095 (JP), filed on Feb. 06, 2003. | ||
Prior Publication US 2004/0206314 A1, Oct. 21, 2004 | ||
Int. Cl. F02F 1/36 (2006.01) |
U.S. Cl. 123—41.82R | 18 Claims |
8. A cylinder head for an internal combustion engine, comprising:
a main casting body having a hollow water jacket formed therein to allow coolant flow therethrough, said main casting body
comprising:
a plurality of plug hole walls extending through said water jacket and having plug holes formed therein to receive spark plugs,
and
a connection wall comprising plurality of partitions which connect adjacent plug hole walls with each other in the water jacket, wherein said plug hole walls and partitions cooperate to divide said water jacket into an exhaust port water jacket section
and an intake port water jacket section;
wherein said water jacket defines a flow path in which coolant enters the main casting body at the exhaust port section of
the water jacket, where the flow path splits into two parts and flows in two substantially opposed directions from a medial
area of the main casting body towards the ends of the main casting body,
and wherein the flow path extends around the connection wall at each end of the main casting body where each respective part
of the flow path substantially reverses direction, and the two parts of the flow path then flow toward one another through
the intake port section of the water jacket, and exit the main casting body via a coolant outlet located at a medial area
thereof.
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