High-Speed Operation (C - D Range)

When the pump speed increases to a certain point, the cam ring moves to the extreme right position, making the variable orifice opening the minimum. In this state, the delivery rate per rotation of the pump becomes the minimum and the minimum delivery rate is maintained even if the pump speed increases further.

Fig 1: Flow Control: High-Speed Operation (C - D Range)

Courtesy of SUBARU OF AMERICA, INC.