Valve timing control device

Details Valve timing control device Valve timing control device

2007-06-20

2008-08-26

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07415952

ABSTRACT:
A valve timing control device includes a rotational shaft, a rotational torque transmitting member attached to the rotational shaft, a plurality of vanes each attached to the rotational shaft or the rotational torque transmitting device, a plurality of fluid chambers formed between the rotational shaft and the rotational torque transmitting device, a plurality of first chambers and second chambers, the fluid chambers each divided by means of each vane into each first chamber and each second chamber, a plurality of first fluid passages through each of which fluid is supplied to or drained from the each first chamber, a plurality of second fluid passages through each of which the fluid is supplied to or drained from the each second chamber, passage opening/closing device for opening/closing the first fluid passage or the second fluid passage, and chamber opening/closing device for opening/closing the first chamber and the second chamber.

REFERENCES:
patent: 5937810 (1999-08-01), Sato et al.
patent: 2003/0196618 (2003-10-01), Simpson
patent: 9-151711 (1997-06-01), None

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