Title:
VALVE TIMING CONTROLLER FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3688459
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To attain constantly smooth rotating action of a vane as securing high seal performance between respective oil pressure chambers and to improve responsiveness of valve timing control.
SOLUTION: Opening and closing timing of an intake valve is made variable by having a timing sprocket 1 and a relatively rotationally movable cam shaft convert their relative turning movement phase by reciprocatingly rotating a vane 3 by relative supplying and discharging hydraulic pressure to and from an advance side hydraulic pressure chamber 32 and a lag angle side hydraulic pressure chamber 33 inside a housing 6. Dry film coats 50, 51 are formed on the front end surface 3a of the vane 3 and the outer circumferential surface of respective blades 28 respectively sliding along the inner circumferential surface 6a of the housing 6 and that of a front cover 7 and these dry film coats 50, 51 cause to reduce sliding friction resistance and to seal between the oil pressure chambers 32, 33.
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Inventors:
Miyasaka Hideshi
Application Number:
JP7676198A
Publication Date:
August 31, 2005
Filing Date:
March 25, 1998
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F01L1/34; C10M103/06; C10M107/38; C10N40/25; (IPC1-7): F01L1/34
Domestic Patent References:
| JP10110706A | ||||
| JP2050105U |
Attorney, Agent or Firm:
Tsuyoshi Hashimoto
Hiromichi Kobayashi
Tomioka Kiyoshi
Hiromichi Kobayashi
Tomioka Kiyoshi