Throttle valve has rotating control component with central flow channel which has control bore connecting it to outer surface of component, which can be rotated to connect bore with throttle channels of different cross-section around it

摘要

The throttle valve has a rotating control component (28) with a central flow channel (37) with a control bore (42) connecting this to its outer surface. The component can be rotated to connect the bore with throttle channels (34) of different cross-section around it.