Motor vehicle

A motor vehicle, comprising an internal combustion engine, a radiator, a heat exchanger, a coolant pump, and a valve device arranged separately therefrom, which is controlled at an intake side by pressure;

• the valve device including a plurality of first coolant inlets, a plurality of second coolant inlets, and a coolant outlet connected to an inlet of the coolant pump;
• wherein the valve device is configured to, based on a selected operating point of the coolant pump and a pressure in a coolant, at least one of open and close at least one of i) at least one of the plurality of first coolant inlets and ii) at least one of the plurality of second coolant inlets;
• wherein the plurality of first coolant inlets and a coolant outlet of the coolant pump are connected to the internal combustion engine;
• wherein at least one of the plurality of second coolant inlets is connected to the radiator and at least one of the plurality of second coolant inlets is connected to the heat exchanger;
• wherein at least two of the plurality of second coolant inlets are configured to open at different operating points of the coolant pump and at different pressures in the coolant;
• and
• wherein, in a first operating point of the coolant pump, the coolant pump has a first rotational speed of a plurality of rotational speeds at which at least one of the plurality of first coolant inlets is closed and at least one of the plurality of second coolant inlets is open.

A motor vehicle, comprising an internal combustion engine, a radiator, a heat exchanger, a coolant pump, and a valve device arranged separately therefrom, which is controlled at an intake side by pressure;

• the valve device including at least one first coolant inlet, at least one second coolant inlet, and a coolant outlet connected to an inlet of the coolant pump;
• wherein the valve device is configured to, based on a selected operating point of the coolant pump and a pressure in a coolant, at least one of open and close at least one of the at least one first coolant inlet and the at least one second coolant inlet;
• wherein the at least one first coolant inlet and a coolant outlet of the coolant pump are connected to the internal combustion engine, and the at least one second coolant inlet is connected to the radiator;
• wherein the valve device is continuously adjustable based on a rotational speed of the coolant pump;
• wherein a power of the coolant pump is controlled based on a temperature of the coolant via a temperature sensor and a control device communicatively connected thereto;
• wherein, in a first operating point of the coolant pump, the coolant pump is switched off and the at least one first coolant inlet is open;
• wherein, in a second operating point of the coolant pump, the coolant pump has a rotational speed at which the at least one first coolant inlet is open and the at least one second coolant inlet is closed;
• wherein, in a third operating point of the coolant pump, the coolant pump has a second rotational speed at which the at least one first coolant inlet and the at least one second coolant inlet are open;
• and
• wherein, in a fourth operating point of the coolant pump, the coolant pump has a third rotational speed at which the at least one first coolant inlet is closed and the at least one second coolant inlet is open.