Title:
CYLINDER LINER
Document Type and Number:
Japanese Patent JP3858375
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To shorten the running-in time by forming worked lines right-angled to the moving direction of a piston on the sliding surface of the cylinder liner of an internal combustion engine by grinding, removing the projections of the worked lines by finishing work to set the central line average roughness within a specified value.
SOLUTION: Worked lines 3 right-angled to the moving direction 4 of a piston are formed on the sliding surface 2 of a cylinder liner 1 by grinding. The acute initial surface roughness after grinding is finished by a hand grinder with sand paper to remove the projections so that the central average roughness is 0.4 μm or less. Thus, the oil film forming performance of the cylinder liner 1 is improved, and the running-in is shortened. As the grinding method for forming the worked lines 3 at a right-angle to the moving direction of the piston, a grinding work by moving a grinding wheel only in one direction with a small pitch is adapted, instead of a grinding work by rotating and vertically moving the grinding wheel.
Inventors:
Shigeru Sabun
Yasuhiro Tadaishi
Yasuhiro Tadaishi
Application Number:
JP25497897A
Publication Date:
December 13, 2006
Filing Date:
September 19, 1997
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
F02F1/00; F02F1/20; F16J10/04; (IPC1-7): F02F1/00; F02F1/20; F16J10/04
Domestic Patent References:
| JP60012648U | ||||
| JP57052653A | ||||
| JP58098643A |
Attorney, Agent or Firm:
Yoshiaki Shimamura
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