Patent ID: 8316806

Claim:
An arrangement for cooling oil in a gearbox in a vehicle wherein the vehicle comprises a combustion engine having a cooling system for cooling the combustion engine, the arrangement comprises an oil cooler, an oil system configured and operable to circulate oil between the gearbox and the oil cooler, a coolant circuit configured and operable to lead coolant to the oil cooler, the coolant circuit comprises a radiator element configured for cooling the coolant and the radiator element being connected for leading cooled coolant from the radiator element to the oil cooler, the coolant circuit further comprises a flow-regulating device configured for regulating the coolant flow through the radiator element for imparting to the coolant a temperature which causes a desired cooling of the oil in the oil cooler, the arrangement being configured to temporarily divert priority away from cooling the oil in the gearbox and to leading a relatively large coolant flow through the radiator element in selected situations where the load on the combustion engine's cooling system is greater than a selected level, and to lead the coolant from the radiator element which cools the coolant to the combustion engine's cooling system.