Patent ID: 7735467

Claim:
An internal combustion engine comprising: an air induction system for admitting combustion air into the engine; a throttle body mounted for controlling airflow into the induction system, the throttle body including; primary and secondary throttle bores opening into an air intake of the system; primary and secondary throttle shafts carrying primary and secondary throttle blades (throttles) in the primary and secondary throttle bores, respectively, the shafts being operative to actuate their respective throttles between closed and open positions; a single motor comprising the sole power actuator operatively connected for actuating the throttles; a primary gear train connected between the actuator and the primary throttle shaft for actuating the primary throttle; a secondary gear train connected between the actuator and the secondary throttle shaft for actuating the secondary throttle; wherein the primary gear train establishes a first angular relation between rotation of the primary throttle and the actuator; the secondary gear train establishes a second angular relation between rotation of the secondary throttle and the actuator; and the secondary gear train establishes a progressive angular rate of rotation between the secondary throttle and the actuator.