Valve timing control apparatus for internal combustion engine

Details Valve timing control apparatus for internal combustion engine Valve timing control apparatus for internal combustion engine

2007-06-05

2007-06-05

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

11227125

ABSTRACT:
A valve timing control apparatus for an internal combustion engine includes a housing having a housing body and shoes protruding from an inner circumferential surface of the housing body to define actuation spaces therebetween, a vane rotor disposed in the housing and having a rotor body and vanes protruding from an outer circumferential surface of the rotor body to divide the actuation spaces into circumferentially alternating first and second hydraulic chambers, a plurality of spring units arranged in at least either the first hydraulic chambers or the second hydraulic chambers to bias the vane rotor in a rotational direction with respect to the housing, and a rotation restriction mechanism capable of restricting a relative rotation of the housing and the vane rotor to prevent the shoes and the vanes from contact with each other within the hydraulic chambers in which the spring units are arranged.

REFERENCES:
patent: 6336433 (2002-01-01), Anton et al.
patent: 6450138 (2002-09-01), Kinugawa et al.
patent: WO 01/55562 (2001-08-01), None

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