Patent ID: 6488009
Filing Date: 2002-12-03
Classification: F02D

Abstract:
A throttle comprising:a throttle body having an air intake passage, a throttle shaft rotatably supported by the throttle body and having a rotational axis L, a throttle valve disposed on the throttle shaft and adapted to open and close the intake air passage, a relief lever pivotally mounted on the throttle shaft, a return spring disposed between the throttle body and the relief lever and adapted to urge the relief lever in a valve closing direction with respect to the throttle body, a throttle gear fastened to the throttle shaft and a relief spring disposed between the throttle gear and the relief lever and adapted to urge the throttle gear in a valve opening direction with respect to the relief lever, wherein a first contact position is defined at a point in which the throttle gear contacts the relief lever when the throttle gear pivots to a predetermined pivot position B in the valve opening direction, wherein a second contact position is defined at a point in which the throttle body contacts the relief lever when the relief lever pivots to the predetermined pivot position B in the valve closing direction, wherein the first contact position and the second contact position are both located either (i) within a plane P that is perpendicular to the rotational axis L of the throttle shaft or (ii) on the same side of the plane P, and wherein the plane P includes a position in which the biasing force of the return spring acts on the relief lever.