Cooling system for a vehicle, and method for the operation of a cooling system
AssigneeAudi AG
InventorsUwe Haas, Thomas Anzenberger, Thomas Reuss, Gunter Zitzler
Life of this patent
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Abstract
An invention relates to a cooling system for a vehicle comprising an engine, an engine radiator, and an engine cooling circuit. A second cooling circuit encompassing at least one cooling component can be coupled to the engine radiator and is connected to a coolant recirculation pipe of the engine cooling circuit by means of a branch of a coolant supply pipe of the engine cooling circuit and a recirculation pipe of the cooling component. The second cooling circuit can be alternatively coupled to the coolant recirculation pipe or a coolant supply pipe at the output end in accordance with operating conditions of the engine.
Claims13
A cooling system for a vehicle comprising:
- a first circuit including an engine, a radiator and a first pump;
- a second circuit including a heat exchanger in an exhaust gas recirculation line and a second pump, having ends connected to the supply and return segments of said first pump and engine of said first circuit;
- and
- a diverter line interconnecting said second circuit with said supply segment of said first pump and engine of said first circuit, including a first valve operable responsive to a selected operational condition of said engine.
A method of operating a cooling system of a motor vehicle provided with a first circuit including an engine, a radiator and a first pump, and a second circuit including a heat exchanger in an exhaust gas recirculation line and a second pump, having ends connected to the supply and return segments of said first circuit, comprising selectively connecting said second circuit with one of said supply and return segments of said first pump and engine of said first circuit responsive to predetermined operating conditions of said engine.
Dependencies are inferred from the claim text.