Cooling water passage structure of internal combustion engines

Details Cooling water passage structure of internal combustion engines Cooling water passage structure of internal combustion engines

2011-04-26

2011-04-26

Cuff, Michael (Department: 3783)

Internal-combustion engines

Cooling

Plural materials

C123S041720, C123S041730

Reexamination Certificate

active

07930999

ABSTRACT:
A cooling water passage structure of internal combustion engines is provided which can contribute to a scale-down of the external form of the engine and also can prevent deformation of the cylinder bores. The cooling water passage structure comprises a water jacket for the flow of cooling water provided on the peripheries of a plurality of cylinder bores; and a lateral suction passage9a,9bintegrally formed with a side wall of a cylinder block2having bolt holes formed for fastening a cylinder head3.The lateral suction passage runs through by the cylinder bores at a height in the vicinity of the water jacket bottom and is arranged on the outside of, and perpendicular to the bolt holes. On the rear surface of the cylinder head3is mounted a water passage block15and on the front end part of the cylinder block2is provided a water pump housing10.

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