Patent ID: 8096270
Filing Date: 2012-01-17
Classification: B22D,F02F,F16J,Y10T

Abstract:
1. A cylinder block which comprises a liner arranged on an inner circumference surface of a bored hole and a water jacket arranged on an outside of the liner in a radial direction, wherein a cylinder-shaped member in which a liner portion and a hollow portion capable of forming the water jacket are formed integrally at an end portion thereof by a bending process is enclosed with a cylinder block forming material by casting, and the water jacket is configured to have a deck portion, an outside portion, a tip end portion, a part of the liner portion, and an end surface, the end surface being adapted to make a point contact relative to the outer circumference surface of the part of the liner portion to an extent that a molten metal of the cylinder block forming material does not penetrate into the cylinder block.