Patent ID: 7228830
Filing Date: 2007-06-12
Classification: F01L,Y10T

Abstract:
1. A valve timing control device for an internal combustion engine comprising: a driving rotational member driven by a crankshaft of the engine; a driven rotational member including either one of a camshaft having a cam that opens an engine valve, provided at an associated one of an intake port and an exhaust port for opening and closing the associated port against a spring bias of a valve spring, which biases the engine valve in a direction for closing of the associated port, and a separate member integrally connected to and separable from the camshaft; and an installation-angle adjusting device disposed between the driving rotational member and the driven rotational member to transmit a torque of the driving rotational member to the driven rotational member, the installation-angle adjusting device comprising a movable operating member that varies, depending on engine operating conditions, a relative-rotation phase between the crankshaft and the camshaft by way of movement of the movable operating member in a substantially radial direction of the camshaft, said movement of the movable operating member being created by motion-converting a rotational movement produced by an electromagnetic force.