Patent ID: 7415952
Filing Date: 2008-08-26
Classification: F01L

Abstract:
1. A valve timing control device comprising: a rotational shaft for controlling a valve; a rotational torque transmitting member attached to the rotational shaft so as to be relatively rotatable within a predetermined range and transmitting a rotational torque transmitted from a crankshaft pulley; a plurality of vanes attached to one of the rotational shaft and the rotational torque transmitting means; a plurality of fluid chambers formed between the rotational shaft and the rotational torque transmitting means; 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 means for opening/closing at least one of at least one of the first fluid passages and at least one of the second fluid passages; and chamber opening/closing means for opening/closing at least one of at least one of the first chambers and at least one of the second chambers.