Switchable multiple stage oil pump comprises pump stages each having a wheel arranged on the driveshaft

摘要

Switchable multiple stage oil pump comprises pump stages each having a wheel (14) arranged on the driveshaft (12). A bell wheel (18) is provided for each pump stage as part of a switching part (20). A pressure chamber (24) is also provided and is coupled with the bell wheel so that actuation of the switching part is produced. Preferred Features: The pressure chamber is arranged between the bell wheel and the wheel of the pump stages. A sleeve (21) surrounding the driveshaft axially slides on the wheel.