Abstract: A cooling control system for an electric vehicle configured to prevent ingestion of air into an oil pump cooling a motor when the electric vehicle is accelerated or decelerated abruptly. A controller comprises: a detector that detects acceleration and deceleration of the electric vehicle; an abrupt acceleration/deceleration determiner that determines that the acceleration or the deceleration exceeds than a threshold; and an oil reducer that reduces an amount of oil supplied from an oil pump to a motor where the lighter load than the load on another motor is applied, when the acceleration or the deceleration exceeds the threshold.

Abstract: A control system for an electric vehicle for allowing a driver to virtually enjoy a manual shifting operation as performed in the conventional vehicles having transmissions without reducing stability and operability of the electric vehicle. A controller is configured to set a required drive torque in accordance with a selected operating range, and to selectively allow an execution of a skip shifting of the operating range to the range further than two ranges from the current operating range, based on the required drive torque to be set in the operating range selected by operating a shifting device consecutively.

Abstract: A drive device installed in a vehicle includes a case including an electric motor chamber, a terminal block chamber, and a gear chamber, an electric motor, a terminal block, a speed reducer, and a hypoid gear. A first through hole is provided in a partition wall between the electric motor chamber and the terminal block chamber. A second through hole is provided in a partition wall between the terminal block chamber and the gear chamber. The electric motor includes a rotor shaft extending from the electric motor chamber through the first through hole, the terminal block chamber, and the second through hole, to the gear chamber. A gap between the rotor shaft and the second through hole is sealed by an oil seal. A first lubricating oil is accommodated in the electric motor chamber and the terminal block chamber. A second lubricating oil is accommodated in the gear chamber.

Abstract: A drive device mounted on a vehicle, the drive device comprising: an electric motor housed in the electric motor chamber; a first shaft arranged parallel to or coaxial with a rotor shaft of the electric motor; a counter gear for transmitting rotation of the rotor shaft to the first shaft; a second shaft for rotating wheels of the vehicle; a hypoid gear for transmitting rotation of the first shaft to the second shaft; an oil seal for sealing a gap between the first shaft and the case; a first lubricating oil housed in the electric motor chamber and the counter gear chamber; and a second lubricating oil housed in the hypoid gear chamber.

Abstract: A backlight includes: a light guide plate including a front surface and a back surface, the light guide plate including an end face that connects one edge of the front surface and one edge of the back surface, at least part of the end face being inclined at an angle other than a right angle relative to the front surface; and a light source that emits light, the light source being set in an arrangement enabling emission of the light parallel to the front surface towards the at least part of the end face of the light guide plate, wherein the light is incident on and refracted at the at least part of the end face, propagates inside a material of the light guide plate, is reflected off the back surface, and is surface-emitted from the front surface.

Abstract: A drive device includes: a first motor that drives a left wheel; a second motor that drives a right wheel; an oil reservoir; a partition wall provided on a bottom face of the oil reservoir and sections the oil reservoir into a left oil reservoir and a right oil reservoir; a first oil pump that intakes oil from an intake port that opens to a bottom face of the left oil reservoir and supplies sucked oil to the first motor; and a second oil pump that intakes oil from a suction port that opens to a bottom face of the right oil reservoir and supplies sucked oil to the second motor. The partition wall is provided with a through hole extending from the left oil reservoir to the right oil reservoir. A blocking unit for blocking the through hole when acceleration is applied in a lateral direction is provided.

Abstract: The drive device includes a first motor. The drive device includes a first rotational shaft that integrally rotates with a rotor of the first motor. The drive device includes a first counter shaft that is disposed parallel to the first rotational shaft and that is also connected to the first rotational shaft via a first counter gear. The drive device includes a first transmission shaft that is disposed coaxially with the first rotational shaft and that is also connected to the first counter shaft via a second counter gear. A series of oil channels is fashioned within the first rotational shaft and the first transmission shaft.

Abstract: The drive device comprises first and second motors comprising respective first and second rotary shafts. The drive device comprises first and second counter shafts connected to each of the first and second rotary shafts via first and second counter gears. The drive device comprises first and second transmission shafts connected to each of the first and second counter shafts via third and fourth counter gears. The drive device comprises first and second drive shafts connected to each of the first and second transmission shafts via first and second hypoid gears. The first and second rotary shafts are located between the first and second counter shafts with respect to the vehicle width direction. The first and second transmission shafts are located between the first and second counter shafts in the vehicle width direction.

Abstract: According to one embodiment, an illumination device includes light sources, a distributing light guide element and a light guide. The distributing light guide element has a first side surface, a second side surface and light waveguides extending from the first side surface towards the second side surface. The light guide has a third side surface and a first main surface. Each of the light waveguides have a first end portion into which light emitted from a corresponding light source enters, and a second end portion from which the light propagating in the light waveguide is emitted. The light emitted from the second end portion enters the light guide via the second side surface and the third side surface and is emitted from the first main surface.

Abstract: A drive device includes: a first electric motor that drives a left wheel of a vehicle; a second electric motor that drives a right wheel of the vehicle; a first oil pump that supplies oil to the first electric motor via a first oil supply passage; a second oil pump that supplies oil to the second electric motor via a second oil supply passage; a connecting channel that connects the first oil supply passage and the second oil supply passage; and a flow regulating device that is installed in the connecting channel and allows oil to flow in the connecting channel when one of the first oil pump and the second oil pump is abnormal.

Abstract: A driving apparatus includes: a first power source; a fluid transmission device; a first output shaft for receiving a power transmitted from the fluid transmission device through a first power transmission path and outputting the power to drive wheels of a vehicle; a rotary electric machine connected to the first output shaft and/or the drive wheels, through a second power transmission path; and a control device. When the vehicle is stopped or running at an extremely low speed, with a rotary-electric-machine driving mode being established, the control device is configured, upon determination that a drive request amount is larger than a threshold amount value, to place a direct clutch of the fluid transmission device into an engaged state and to place the first power transmission path into a power transmittable state so as to cause the power of the first power source to be outputted to the first output shaft.

Abstract: A drive device for an electric vehicle having a first drive wheel and a second drive wheel. The drive device includes: (a) a first speed reducer through which the first drive wheel is to be driven by a first electric motor, and (b) a second speed reducer through which the second drive wheel is to be driven by a second electric motor. The first speed reduce and the second speed reducer are constituted by respective speed reduction mechanisms that are the same in kind as each other. The first speed reducer and the second speed reducer have respective natural frequencies that are different from each other.

Abstract: A hydrogen concentration calculating process calculates a hydrogen concentration in a specific portion of a target region based on an operating state of an internal combustion engine. The internal combustion engine uses hydrogen as fuel. A downstream passage is a portion of an intake passage of the internal combustion engine that is downstream of a throttle valve. A connecting passage connects a crank chamber of the internal combustion engine to the downstream passage. The target region is a region including the crank chamber and the connecting passage. When a condition is met, in which the hydrogen concentration is greater than or equal to a predetermined determination value, a pressure reduction process causes a pressure in the downstream passage to be lower than that at a point in time when the condition is met.

Abstract: A vehicle driving apparatus includes: an engine; a first rotary electric machine; first and second output shafts; a power distribution device for distributing a power between the first and second output shafts; and a control device for controlling an electric-power generation torque of a second rotary electric machine such that a power distribution ratio between the first and second output shafts becomes a target distribution ratio, and controlling a total torque of the engine and the first rotary electric machine such that a requested drive torque is obtained. The control device executes an electric-power consuming control to supply at least a part of a generated electric power generated by the second rotary electric machine, to the first rotary electric machine without via a power storage device, and to drive the first rotary electric machine, such that an operation state of the engine is brought close to a fuel-economy optimum state.

Abstract: A software update system according to one embodiment of the present disclosure is configured to update software used in a vehicle based on update data of the software, the update data being transmitted to the vehicle from an external device that is communicably connected to the vehicle. The software update system includes: a software update unit configured to update the software based on the update data; a vehicle data acquisition unit configured to acquire respective pieces of second vehicle data about states of the vehicle before and after the software update by the update unit; and an effect evaluation unit configured to evaluate an effect of the software update based on the respective pieces of second vehicle data before and after the software update.

Abstract: A software update system includes: a vehicle data acquiring unit configured to acquire data on a state of a vehicle including data of a predetermined performance of the vehicle; an effect predicting unit configured to predict an effect on the predetermined performance which is obtained when update data of software used in the vehicle for improvement of the predetermined performance is applied to the vehicle based on the data acquired by the vehicle data acquiring unit; and a delivery unit configured to deliver the update data to the vehicle when the effect predicted by the effect predicting unit satisfies a predetermined reference and to withhold delivery of the update data to the vehicle when the effect predicted by the effect predicting unit does not satisfy the predetermined reference.

Abstract: It is determined whether fuel efficiency of a vehicle is improved by operating a first rotating machine to generate electricity to such an extent that an electrical path amount becomes a desired electrical path amount for controlling an operating point of an engine to a desired operating point and driving and operating a second rotating machine as a second power source, the electrical path amount being a magnitude of electric power in an electrical path through which the electric power is transferred between the first rotating machine and the second rotating machine. When the electronic control device determines that the fuel efficiency of the vehicle is improved, the first rotating machine is operated to generate electricity to such an extent that the electrical path amount becomes the desired electrical path amount and the second rotating machine is driven and operated as the second power source.

Abstract: A controller for an engine includes processing circuitry. The processing circuitry executes an obtaining process that obtains a catalyst temperature, which is a temperature of a catalyst. The processing circuitry executes a setting process that sets a target air-fuel ratio that is a target value of an air-fuel ratio in the cylinder. The temperature of the catalyst at which an efficiency of nitrogen oxide reduction by the catalyst is the highest is referred to as a prescribed temperature. In the setting process, the processing circuitry sets the target air-fuel ratio to be higher when the catalyst temperature is a first value that is lower than the prescribed temperature, than when the catalyst temperature is a second value that is lower than or equal to the prescribed temperature and higher than the first value.

Abstract: A sound-source-candidate extraction system for extracting a candidate of a sound source that causes a noise propagated inside or outside a cabin of a vehicle. The sound-source-candidate extraction system includes: (a) an imaging device configured to acquire data of an image inside or outside the cabin of the vehicle; and (b) an extracting device configured to extract the candidate of the sound source, depending on a difference between first and second image data acquired by the imaging device, wherein the first image data is the data of the image before generation of the noise, and the second image data is the data of the image upon or after the generation of the noise. Also disclosed is a sound-source search method using the sound-source-candidate extraction system.

Abstract: A deterioration estimation device includes a storage device and an execution device. The storage device is configured to store mapping data defining a mapping that outputs an output variable indicating the degree of deterioration of oil when an input variable is input. The mapping includes, as the input variable, a color variable that is a variable indicating a color of the oil and a hydrogen ion variable that is a variable indicating a hydrogen ion concentration of the oil. The execution device is configured to execute an acquisition process that is a process of acquiring the input variable and a calculation process of inputting the input variable acquired through the acquisition process to the mapping to output a value of the output variable.