Valve timing adjusting apparatus

Details Valve timing adjusting apparatus Valve timing adjusting apparatus

2007-11-06

2007-11-06

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090120, C464S160000

Reexamination Certificate

active

11599396

ABSTRACT:
A valve timing adjusting apparatus has a housing and a vane rotor to form multiple fluid chambers, and a relative position of the vane rotor to the housing is adjusted by the fluid pressure supplied into the fluid chambers. A check valve is provided in a branched passage portion, so that working fluid may not be pushed out from an advancing fluid chamber to a low pressure side, even when the working fluid in the advancing fluid chamber is temporally compressed to increase its fluid pressure due to a torque change applied from a cam shaft to the vane rotor.

REFERENCES:
patent: 5657725 (1997-08-01), Butterfield et al.
patent: 6763791 (2004-07-01), Gardner et al.
patent: 7143729 (2006-12-01), Yaoko et al.
patent: 2005/0284433 (2005-12-01), Yaoko et al.
patent: 2003-343218 (2003-12-01), None

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