Pilot-pressure-controlled flow valve and fluid system containing same

Patent · Tue Jan 10 04:00:00 EST 2023

OSTI ID:1987014

Chowdhury, Sourav; Rupp, Daniel; Zima, Mark J.; Cripps, Brian; Curtin, Kevin

In a thermal fluid system, a control valve includes a flow valve and a solenoid pilot valve. The flow valve has an inlet and an outlet; a control chamber for receiving a pilot pressure; and a valve member operable by the pilot pressure to selectively open and close a fluid path from the inlet to the outlet. The pilot pressure acts in a closing direction of the flow valve. The pilot valve provides the pilot pressure to the control chamber and is a 3/2 way valve with a first port in fluid communication with the control chamber, a second port to be connected to a pressure source, and a third port. The pilot valve has a first position connecting the first port with the second port and a second position connecting the first port with the third port.

• Research Organization: Mahle International GmbH, Stuttgart (Germany)
• Sponsoring Organization: USDOE
• DOE Contract Number: EE0006840
• Assignee: Mahle International GmbH (Stuttgart, DE)
• Patent Number(s): 11,549,606
• Application Number: 16/202,735
• OSTI ID: 1987014
• Country of Publication: United States
• Language: English