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Cylinder block structure

  • US 5,188,071 A
  • Filed: 01/27/1992
  • Issued: 02/23/1993
  • Est. Priority Date: 01/27/1992
  • Status: Expired due to Fees
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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