Patent ID: 8590494
Filing Date: 2013-11-26
Classification: F01P,F02B,F02M,Y02T

Abstract:
1. An arrangement for controlling cooling in a supercharged combustion engine, the arrangement comprising: a high-temperature cooling system for transmitting a circulating coolant for the cooling of the combustion engine; a first cooler for cooling a gaseous medium, which contains water vapour, and which is supplied to the combustion engine, the gaseous medium being cooled by the coolant in the high-temperature cooling system; a separate low-temperature cooling system for transmitting a circulating coolant, and a coolant pump connected in the low temperature cooling system and configured to circulate the coolant in the low-temperature cooling system; a second cooler for cooling the gaseous medium which contains water vapour, the gaseous medium being cooled by the coolant in the low-temperature cooling system, the gaseous medium being cooled in the second cooler after cooling of the gaseous medium in the first cooler; at least one temperature sensor positioned and operable to detect the temperature of the gaseous medium after it has been cooled in the second cooler; a control unit configured and operable to receive information from the temperature sensor and to decide whether there is ice formation or risk of ice formation in the second cooler, the control unit being configured and operable to control the coolant pump to be temporarily switched off when the control unit receives a temperature value from the sensor which is below a lower threshold value at which there is a risk of ice formation in the gaseous medium when the gaseous medium is in the second cooler and being configured and operable to control the coolant pump to cause circulation of a normal flow of coolant through the second cooler when the control unit receives a temperature value from the sensor which is above an upper threshold value at which the risk of ice formation is at least temporarily over.