초록 ▼

The start control is repeatedly performed for an oil pump that pressure feeds the flow of oil in a motor cooling system. This control is repeated for every specified rise in motor temperature (e.g., every 10° C.) from an initial starting temperature. This arrangement increases the potential for a su

The start control is repeatedly performed for an oil pump that pressure feeds the flow of oil in a motor cooling system. This control is repeated for every specified rise in motor temperature (e.g., every 10° C.) from an initial starting temperature. This arrangement increases the potential for a successful start-up of the oil pump even when the oil has a high viscosity due to a relatively low outside air temperature. In the event of a failed start-up of the oil pump by repeated starting, the start control determines an abnormality exists in the oil pump or its power supply if an outside air temperature is greater than a reference temperature. This arrangement effectively eliminates incorrect detection of an abnormality in the oil pump or its power supply.

대표청구항 ▼

The invention claimed is: 1. A cooling device that supplies a flow of cooling oil to cool down a motor mounted on a vehicle and driven to output driving power, said cooling device comprising:a heat exchange unit configured to cool down the flow of cooling oil through heat exchange with outside air;a

The invention claimed is: 1. A cooling device that supplies a flow of cooling oil to cool down a motor mounted on a vehicle and driven to output driving power, said cooling device comprising:a heat exchange unit configured to cool down the flow of cooling oil through heat exchange with outside air;a pressure feed unit that is provided in a cooling oil circulation path formed between the motor and the heat exchange unit, the pressure feed unit configured to pressure feed the flow of cooling oil and circulate the flow of cooling oil through the cooling oil circulation path;an outside air temperature measurement unit configured to measure outside air temperature;a motor temperature measurement unit configured to measure temperature of the motor; anda start control module configured to perform a start-up control for a start of the pressure feed unit at a rise in measured temperature of the motor to a preset starting temperature and, in the event of a failed start-up of the pressure feed unit, to repeat the start-up control up to a predetermined number of times at every rise in measured temperature of the motor to one of multiple different temperatures, which are higher than the preset starting temperature, until a successful start-up of the pressure feed unit,wherein said start control module is configured to give notification of an abnormality in the event of the failed start-up of the pressure feed unit by the predetermined number of repetitions of the start-up control, andwherein said start control module is configured so as not to give notification of an abnormality even in the event of the failed start-up of the pressure feed unit by the predetermined number of repetitions of the start-up control, when the measured outside air temperature is lower than a preset low reference temperature.