STRUCTURE OF CYLINDER BLOCK WITH CAST-IN CYLINDER LINER, METHOD OF PRODUCING CYLINDER BLOCK, AND CYLINDER LINER FOR CASTING-IN USED FOR THE METHOD

摘要

A cylinder block (2) has a cast-in cylinder liner (1). A step portion (31) with a predetermined width is provided at an extension portion (4b) formed along a lower end surface (3b) of the cylinder liner (1), the step portion (31) oriented in the radial direction from the inside toward the outside of the cylinder liner (1). The step portion (31) has a width corresponding to a dimensional tolerance range beta for a bore finish dimension position alpha. The outer periphery-side edge of the step portion (31) is provided closer to the outer periphery side than the bore finish dimension position alpha. A positional displacement of a hole is detected by checking and confirming the step portion (31) after the inner peripheral surface of the cylinder liner (1) is processed.