| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylinder block preventing deformation of a bore part. SOLUTION: The cylinder block is divided into a crank case part and a cylinder part. The cylinder part 1 includes the bore part 12 surrounding a bore zone 15, a main body part 11 provided on outer circumference of the bore part 12 and forming a water jacket space 7 between the bore part 12 and the same, and a bridge part 13 connecting the bore part 12 and the main body part 11. The water jacket space 7 opens at a lower end surface 211 and a lower end surface 311 of the cylinder part 1. COPYRIGHT: (C)2006,JPO&NCIPI
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