| 摘要(英文)： |
The valve mechanism of an engine, comprising : camshaft, camshaft rotation of the crankshaft through the engine and is used for opening and closing the cam of the valve of the engine; and phase variable mechanism, the cam phase variable mechanism of the rotation direction of the change in phase relative to the crankshaft. Phase variable mechanism includes : a driven member, the driven member is the crankshaft to rotate, and with respect to the camshaft, the driven member in the rotation direction relative to the displacement in the axial direction and can not be relative displacement; a guide member, the guide member through the torsion joint mechanism is coupled to the camshaft and can rotate together with the cam shaft, and relative to the driven member, guide member is capable of relative displacement in the axial direction and in the rotation direction cannot be relative displacement; centrifugal weight, the centrifugal weight is arranged at between the driven member and the guide member; and the pushing member, the pushing member to the driven member and the guide component are close to each other in the direction of the driven member and the guide component. As a result of the centrifugal force pushes pushing the component of the centrifugal weight moves, the under the action of the thrust force of the member, a guide member to the driven member in the relative displacement in an axial direction, the connecting mechanism in the guide member of the torque to the driven member in the axial direction is converted into the relative displacement of the camshaft relative to the crankshaft in the rotation direction of the relative displacement, so that the cam in the rotation direction changes the phase with respect to the crankshaft. |
