Abstract: The purpose of the present invention is to provide a lubricating oil composition capable of achieving good wear resistance and good scoring resistance of a bearing in addition to further fuel saving while maintaining durability and seizure resistance that can be used as a gear oil for a high-output, high-speed gear mechanism. A lubricating oil composition containing a combination of Fischer-Tropsch derived base oil having a low kinematic viscosity at high temperature, polyalphaolefin having a high kinematic viscosity at high temperature, and ester compound of a trivalent or higher polyol having a low kinematic viscosity at high temperature, and further contains a partial ester compound of an unsaturated fatty acid and a polyol, including a monoester compound of the unsaturated fatty acid and the polyol.

Abstract: A cooling system for a power transmission unit that can supply oil properly to a differential mechanism and motors. The cooling system comprises: a first branch passage to supply the oil to the differential mechanism; a second branch passage to supply the oil to the first motor; and a third branch passage to supply the oil to the second motor. The second branch passage includes a first oil feeding section that supplies the oil to a coil of the first motor, and a second oil feeding section that supplies the oil f to a core of the first motor. The third branch passage includes a third oil feeding section that supplies the oil to a coil of the second motor, and a fourth oil feeding section that supplies the oil to a core of the second motor.

Abstract: A shaft supporting structure in which a shaft support span is reduced to prevent flexure of the shaft. In the supporting structure, a rotary member is mounted on a rotary shaft supported by bearings to be rotated integrally therewith, and the bearings are supported by a support member. The first bearing and the second bearing are disposed on both sides of the rotary member on the rotary shaft, and the first bearing is disposed between the rotary member and the fastening member in the axial direction of the rotary shaft.

Abstract: A cooling system for a power transmission unit that can supply oil properly to a differential mechanism and motors. The cooling system comprises: a first branch passage to supply the oil to the differential mechanism; a second branch passage to supply the oil to the first motor; and a third branch passage to supply the oil to the second motor. The second branch passage includes a first oil feeding section that supplies the oil to a coil of the first motor, and a second oil feeding section that supplies the oil f to a core of the first motor. The third branch passage includes a third oil feeding section that supplies the oil to a coil of the second motor, and a fourth oil feeding section that supplies the oil to a core of the second motor.

Abstract: The influenced of condensed water on an EGR device is alleviated. A device (100) that controls a cooling system including adjusting means for being able to adjust a circulation amount of coolant in a first flow passage, including an engine cooling flow passage, an EGR cooling flow passage and a radiator flow passage, and a second flow passage, including the engine cooling flow passage, the EGR cooling flow passage and a bypass flow passage and not including the radiator flow passage, includes: measuring means for measuring a temperature of the coolant; limiting means for limiting circulation of the coolant at starting an internal combustion engine; and control means for circulating the coolant preferentially through the second flow passage via control over the adjusting means based on the measured temperature in a period in which circulation of the coolant is limited.

Abstract: An object of the invention is to provide a control device for an internal combustion engine that regularly and forcefully removes deposit that is accumulated in cylinders and restrains consecutive occurrences of pre-ignition beforehand. The internal combustion engine has a low-speed pre-ignition region in which a possibility of occurrence of pre-ignition increases, in a low-rotation and high-load region. Ignition means (16) for igniting an air-fuel mixture taken into the cylinders is included.

Abstract: The influenced of condensed water on an EGR device is alleviated. A device (100) that controls a cooling system including adjusting means for being able to adjust a circulation amount of coolant in a first flow passage, including an engine cooling flow passage, an EGR cooling flow passage and a radiator flow passage, and a second flow passage, including the engine cooling flow passage, the EGR cooling flow passage and a bypass flow passage and not including the radiator flow passage, includes: measuring means for measuring a temperature of the coolant; limiting means for limiting circulation of the coolant at starting an internal combustion engine; and control means for circulating the coolant preferentially through the second flow passage via control over the adjusting means based on the Measured temperature in a period in which circulation of the coolant is limited.

Abstract: An internal combustion engine according to the present invention includes an exhaust treatment device provided in an exhaust passage and a burner device provided upstream of the exhaust treatment device to raise exhaust temperature. The burner device includes a fuel addition valve configured to add fuel into the exhaust passage, a first ignition device configured to ignite the added fuel, a burner catalyst provided downstream of the first ignition device, and a second ignition device provided downstream of the burner catalyst. The burner catalyst partitions the exhaust passage into an infra-catalyst passage formed inside the burner catalyst and an extra-catalyst passage formed outside the burner catalyst. The second ignition means is positioned between the extra-catalyst passage and the exhaust treatment device. Generated soot can be combusted by the second ignition device.