Patent ID: 7975669

Claim:
An internal combustion engine assembly having a valve for regulating airflow comprising: an engine block assembly including an air intake manifold; a throttle control valve being fluidly coupled to the air intake manifold, the throttle control valve comprising a valve housing having an inlet end, an outlet end and defining an operating zone therebetween, the valve housing having a direction of flow from the inlet end to the outlet end, the operating zone having a cross-sectional area transverse to the direction of flow; a valve body located within the housing moveable between a closed position and a wide open throttle position, the valve body having a sealing end and a spindle extending therefrom, the sealing end having a shaped cross-section for cooperating with the operating zone of the valve housing and defining an orifice flow area of the operating zone, the orifice flow area varies generally linearly from the closed position to the wide open throttle position.