Patent ID: 8800538

Claim:
A diesel fuel supply circuit comprising: an engine ( 100 ) having an engine fuel inlet and an engine fuel outlet; a fuel cooler ( 104 ) having a cooler fuel inlet and a cooler fuel outlet; a fuel tank ( 102 ) having a fuel tank inlet and a fuel tank outlet; and a valve ( 114 ) coupled to the engine ( 100 ), the fuel cooler ( 104 ) and the fuel tank ( 102 ), the valve ( 114 ) having at least two configurations, the at least two configurations comprising a first configuration in which the valve ( 114 ) couples the fuel cooler ( 104 ) between the engine ( 100 ) and the fuel tank ( 102 ) to receive fuel from the engine fuel outlet and provide the fuel to the fuel tank inlet, and a second configuration in which the valve ( 114 ) couples the fuel cooler ( 104 ) between the fuel tank ( 102 ) and the engine ( 100 ) to receive fuel from the fuel tank outlet and provide fuel to the engine fuel inlet.