| 摘要 |
A common coolant circuit for cooling an internal combustion engine, on the one hand, and the charge air and possibly other media, on the other hand. In order to achieve a constant positive flow through the charge air cooler (intercooler) of a coolant which is at a low temperature level of 45 DEG C. or less and, respectively, to ensure rapid heating of the engine after cold starting, a single four-way thermostat incorporating a double valve is provided. In the cold starting mode, the valve causes a bypass operation of the coolant in the cooling jacket of the engine and the coolant in the common cooling circuit, in conjunction with a separate coolant pump for each. In the hot operating mode, the valve controls circulation of a pre-determined coolant flow in the cooling circuit. The thermostat element of the thermostat is constantly exposed, during this process, to a pre-determined coolant flow from the cooling jacket of the engine (more specifically the coolant outlet of the engine). |
