Patent ID: 11953018
Assignee: COOPER-STANDARD AUTOMOTIVE INC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A pump assembly comprising:
a pump body;
a motor shaft;
a first pump stage housed in the pump body including a first impeller located in the first pump stage connected to the motor shaft, the first pump stage having a first fluid inlet and a first and a second fluid outlet;
a second pump stage housed in the pump body including a second impeller located in the second pump stage connected to the motor shaft, the second pump stage having a second fluid inlet and a third and a fourth fluid outlet;
a mixing chamber housed in the pump body between the first and the second pump stage and isolated from the first pump stage, the mixing chamber in fluid communication with the second fluid inlet and the second fluid outlet; and
a valve assembly operable to:
fluidically connect the first fluid inlet through the first pump stage to the first fluid outlet and to fluidically connect the mixing chamber through the second pump stage to the third fluid outlet;
fluidically connect the first fluid inlet through the first pump stage to the second fluid outlet and to the mixing chamber wherein the fluid from the second fluid inlet and the fluid from the second fluid outlet are mixed in the mixing chamber; and
fluidically connect the first fluid inlet through the first pump stage to the second fluid outlet and to fluidically connect the mixed fluid through the second pump stage to the fourth fluid outlet.