Patent ID: 6802207
Filing Date: 2004-10-12
Classification: G01M

Abstract:
A rotational driving apparatus for testing an internal combustion engine to which a ring gear is attached, comprising:a rotor that is rotatively driven about a rotation axis of the ring gear; a pivot portion supported to the rotor such that it can pivot about a fulcrum, wherein the fulcrum is arranged at a position substantially away from a front end and a rear end of the pivot portion in the direction of the rotation axis of the ring gear; an engaging portion that is positioned at one end region of the pivot portion and that is capable of engaging the ring gear by shifting inward with respect to a radial direction of the ring gear in response to the pivot portion pivoting about the fulcrum; a reciprocating member that can be moved back and forth along the direction of the rotation axis of the ring gear; a link member, one end of which is pivoted at a rear end or a position more frontward than the rear end of the pivot portion and the other end of which is pivoted with respect to the reciprocating member; and an actuator that is operatively connected to the reciprocating member and that shifts the reciprocating member along the direction of the rotation axis of the ring gear.