Controllable cooling system for a motor vehicle, a coolant pump for this purpose, in the coolant pump impeller which can be used as well as a method for controlling a flow of refrigerant in such a cooling system

摘要

The present invention relates to a controllable cooling system (1) for a motor vehicle with a coolant circuit, which a coolant which leads to an internal combustion engine and from this, as well as a mechanically operated, controllable main - coolant pump (3) and of an electrically operated, controllable secondary - coolant pump (5). Further, the cooling system includes a control device, which -, the main coolant pump (3) - and the secondary coolant pump (5) as a function of operating states of the internal combustion engine controls. The present invention also provides an electrically operated, controllable secondary - coolant pump (5) for such a cooling system (1), a in this secondary - coolant pump (5) which can be used a paddle wheel (25) as well as a method for regulating the flow of refrigerant in such a cooling system (1).