ARRANGEMENT AT A SUPERCHARGED INTERNAL COMBUSTION ENGINE

摘要

The present invention relates to an arrangement for a supercharged combustion engine (2), which arrangement is adapted to preventing ice formation in a cooler (10, 15). The arrangement comprises a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which during normal operation of the combustion engine (2) is at a lower temperature than the coolant in the first cooling system and said cooler (10, 15) in which a gaseous medium which contains water vapour is intended to be cooled by the coolant in the second cooling system. The arrangement comprises also a heat exchanger (28), and a valve means (30) which can be placed in a first position when coolant from at least one of said cooling systems is prevented from flowing through the heat exchanger (28) and in a second position when coolant from both of the cooling systems flows through the heat exchanger (28) so that the coolant in the second cooling system is warmed by the coolant in the first cooling system.