Cylinder block structure
First Claim
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1. Cylinder block structure comprising:
- a body with a number of cylinder bores arranged immediately adjacent to one another and an upper end;
water jackets with cores arranged in said body on the left and right sides of said cylinder bores;
a hollow member having a number of arc guide pieces on both ends inserted into said upper end between said cylinder bores so as to form a cooling water passage by burying both ends of said hollow member in one of said water jacket cores; and
insert pins inserted in the guide pieces at both ends of said hollow member communicating with said water jackets to prevent grains of sand from flowing into said hollow member when said one water jacket core is manufactured.
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Accused Products
Abstract
In the Siamese type cylinder block structure, a hollow member having a number of arc guide pieces on both ends is inserted into the upper end between neighboring cylinder bores so as to form a cooling water passage by burying both ends of hollow member in the water jacket core. Insert pins inserted in the guide pieces at both ends of said hollow member communicating with said water jackets to prevent grains of sand injected at high pressure when a water jacket core is manufactured.
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Citations
7 Claims
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1. Cylinder block structure comprising:
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a body with a number of cylinder bores arranged immediately adjacent to one another and an upper end; water jackets with cores arranged in said body on the left and right sides of said cylinder bores; a hollow member having a number of arc guide pieces on both ends inserted into said upper end between said cylinder bores so as to form a cooling water passage by burying both ends of said hollow member in one of said water jacket cores; and insert pins inserted in the guide pieces at both ends of said hollow member communicating with said water jackets to prevent grains of sand from flowing into said hollow member when said one water jacket core is manufactured. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification