Patent ID: 8707920
Filing Date: 2014-04-29
Classification: F01L

Abstract:
1. A valve timing control apparatus for an internal combustion engine, comprising: an intake valve timing control apparatus fixed to an intake camshaft that actuates an intake valve of the internal combustion engine; and an exhaust valve timing control apparatus fixed to an exhaust camshaft that actuates an exhaust valve of the internal combustion engine; wherein each of the intake valve timing control apparatus and the exhaust valve timing control apparatus comprises: wherein in the intake valve timing control apparatus, the lock member is arranged to lock the vane rotor with respect to the housing under a condition that the vane rotor is in a most retarded position within which rotation of the vane rotor is restricted by the first stopper mechanism; wherein in the exhaust valve timing control apparatus, the lock member is arranged to lock the vane rotor with respect to the housing under a condition that the vane rotor is in a most advanced position within which rotation of the vane rotor is restricted by the first stopper mechanism; wherein the exhaust valve timing control apparatus further comprises a biasing member arranged to bias the vane rotor with respect to the housing in a direction toward the most advanced position; and wherein in each of the intake valve timing control apparatus and the exhaust valve timing control apparatus, each of the housing body and the vane rotor is formed by so extrusion.