Valve assembly for controlling coolant flow exiting an engine

摘要

A valve assembly (20) for controlling the amount of coolant exiting an engine is provided. The valve assembly (20) includes a valve housing (66) that is mounted to the engine and defines a passage that is in fluid communication with a coolant outlet in the engine. A motor (68) in the valve housing (66) drives a valve shaft (74) that extends into the passage and on which a butterfly valve plate (76) is mounted. The physical geometry of the inventive assembly is not significantly effected by changes in coolant temperature or coolant contamination and the integrates the valve member and actuator in a single assembly to improve packaging and material use and eliminates potential coolant leak points.