Patent ID: 7165531

Claim:
A governor for an internal combustion engine, the governor being operative to translate a fuel control rack of the engine in response to centrifugally actuated flyweight movement in response to engine speed, the governor comprising: a governor arm body; a pivot arm pivotally mounted to the governor arm body; a tension arm attached to the governor arm body adjacent to the tension arm roller; and, a torque capsule (TC) spring interposed between the tension arm and the governor arm body so that the pivot arm can pivot relative to the governor arm body; wherein the TC spring holds the pivot arm against the tension arm and as engine speed increases, a flyweight force causes an increase in the force of the pivot arm against the tension arm, as speed increases further, the flyweight force overcomes a preload of the TC spring causing the pivot arm to pivot at a joint where the pivot arm is mounted to the governor arm body, in turn causing an end of the pivot arm to move in a direction of increasing rack travel and as engine speed continues to increase, the pivot arm continues to increase rack travel until the flyweight force overcomes a main governor spring, so that rack position is allowed to increase with increased engine speed, and decrease with decreased engine speed, thereby reducing the amount of fuel backup and preventing excess torque rise and reducing smoke and exhaust emissions.