Patent ID: 8196707
Filing Date: 2012-06-12
Classification: F01P,F16H,Y10T

Abstract:
1. An arrangement for cooling oil in a gearbox in a vehicle powered by a combustion engine cooled by a liquid cooling system of the vehicle including a radiator for cooling a circulating coolant, an engine coolant line positioned and configured to lead the circulating coolant from the engine to the radiator, and a thermostat positioned at the engine coolant line, the arrangement comprising: an oil cooler positioned in a vicinity of the gearbox and configured to cool the oil from the gearbox; an oil system positioned and configured to circulate the oil between the gearbox and the oil cooler; a cooling circuit connected to the liquid cooling system of the vehicle, the cooling circuit containing the circulating coolant cooled by the liquid cooling system of the vehicle, the cooling circuit configured and connected to cool the oil in the oil cooler; a cooling element positioned, configured and operable to cool the coolant by air which flows through the cooling element, the cooling element being a cooling device other than the radiator; a line connected to lead the cooled coolant from the cooling element to the oil cooler; a first air passage positioned and configured to lead air which is at a temperature of the surroundings, the cooling element is situated in the first air passage; and the cooling circuit comprises a second line connected to lead coolant from the oil cooler to the engine coolant line of the liquid cooling system of the vehicle at a location downstream of the combustion engine and upstream of the thermostat with respect to the direction of coolant flow in the cooling system.