Cooling circuit for an internal combustion engine with an exhaust gas recirculation and method for operating an internal combustion engine with such a cooling circuit

摘要

The present invention relates to a cooling circuit (1) for an internal combustion engine (2) with an exhaust gas recirculation. The internal combustion engine (2) has a coolant inlet (3) and a coolant outlet (4). The cooling circuit (1) further comprises a main radiator (5) with an inlet (6) and a cooler outlet (7), an egr - cooler (8) with an egr - inlet (9) for coolant and an egr - outlet (10) for a coolant, such as a rule, as well as a main means (11), which in the flow direction of the coolant before the internal combustion engine (2) is arranged. Thus, on the one hand, the egr - cooler (8) can produce the required output power and, on the other hand, a maximum operational reliability of the cooling circuit (1) and the in the cooling circuit (1) intended units is possible, if the cooling circuit (1) according to the invention, in addition to a generally means (12), which, in the direction of flow of coolant is a function of the exhaust gas recirculation cooler (8) is arranged, and / or as a rule, an exhaust gas recycling means (13), which in the flow direction of the coolant before the exhaust gas recirculation cooler (8) is arranged. Furthermore, the invention relates to a method for operating an internal combustion engine (2) with such a cooling circuit (1).