Title:
VALVE LIFTER AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JPH04246212
Kind Code:
A
Abstract:
PURPOSE:To obtain a valve lifter of light weight and excellent in anti-wear property and mass-productivity. CONSTITUTION:In a valve lifter 2 for an internal combustion engine, its body is made of casehardened steel, an wall thickness of its skirt 22 is made small to 0.5 to 1mm, and anti-wear film such as hard chromium plating layer, etc., is provided on the external wall surfaces 221 of the skirt. Also, the skirt 22 is not cemented nor quenched. To manufacture the valve lifter above, a cylindrical body with bottom made of casehardened steel and formed into a shape of valve lifter is prepared, the external and internal wall surfaces of its skirt are plated, cemented and quenched, and the external wall surfaces of the skirt only are coated with anti-wear film 5.
Inventors:
RYUGE FUMITAKA
SAKUGI SEISHI
SAKUGI SEISHI
Application Number:
JP3200791A
Publication Date:
September 02, 1992
Filing Date:
January 30, 1991
Export Citation:
Assignee:
OTEITSUKUSU KK
International Classes:
F01L1/14; (IPC1-7): F01L1/14
Attorney, Agent or Firm:
Yoshiyasu Takahashi