Abstract: A cooling system for motor vehicle with a cooling circuit, which includes one or more internal combustion engines, a pump and a cooling device, is described herein. The cooling system includes a short circuit line, which bypasses the pump by connecting a pressure side of the pump to an intake side of the pump. The cooling system further includes a valve device in the region of the short circuit line, and the valve device is switched between two or more positions. When the valve is in the first position, the entire coolant flow is directed through the short circuit line. Further, when the valve is in the second position, the entire coolant flow is directed through the internal combustion engine and not through the short circuit line.

Abstract: The invention relates to a cooling system (1) in a motor vehicle with a cooling circuit in which at least one internal combustion engine (2), one pump (3) and one cooling device (4) are arranged, wherein a short circuit line (5) which bypasses the pump (3) is provided, which connects a pressure side to an intake side of the pump (3), a valve device (6) which can be switched between at least two positions is provided in the region of the short circuit line (5), in the first position the entire coolant flow flows through the short circuit line (5) and in the second position preferably the entire coolant flow flows through the internal combustion engine (2) and not through the short circuit line (5).