Patent ID: 8511260
Filing Date: 2013-08-20
Classification: F01P,F02B,F02M

Abstract:
1. An arrangement for controlling cooling of a gaseous medium which contains water vapour in a supercharged combustion engine, the arrangement comprising: a first cooling system with a first circulating coolant and the first cooling system being configured for establishing a first temperature of the first coolant, a second cooling system with a second circulating coolant and the second cooling system being configured for establishing a second temperature of the second coolant, and the second coolant during normal operation of the combustion engine is at a lower temperature than the first coolant in the first cooling system; a cooler in which a gaseous medium which contains water vapour is intended to be cooled by the coolant in the second cooling system; a heat exchanger which comprises a first passage configured to having coolant from the first cooling system flow through it and a second passage configured to having coolant from the second cooling system flow through it, a valve which can be placed in a first position at which the valve prevents the coolant from at least one of the cooling systems from flowing through the heat exchanger and in a second position at which the valve permits the coolants from both of the cooling systems to flow through the heat exchanger so that the second coolant in the second cooling system is warmed by the first coolant in the first cooling system; at least one sensor configured to detecting a parameter which indicates whether the gaseous medium is cooled so much that there is ice formation or risk of ice formation in the cooler; and a control unit configured to receiving information from at least one sensor and to deciding whether there is ice formation or risk of ice formation in the cooler and, if there is such formation of ice or risk of ice formation, to placing the valve in the second position.