Subaru Corporation

Atsushi Doki

Fumiyuki Moriya

Hirofumi Yabe

Takumi Hoshi

Masaki Komuro

Tetsu Matsuzaki

Jun Oosawa

Kazutaka Hara

Takuya Yano

Keigo Yamada

Naoto Chiba

Masatoshi Kishikawa

Yuichiro Higashiji

A drive control apparatus for an electric vehicle includes a controller that controls an engine, a traveling motor, a transmission, and an output clutch. The controller estimates the rotation angle of the motor by a first estimation method and controls the motor on the basis of the estimated angle. The estimation method is executable when the rotation speed of the motor is a threshold or higher. When a rotation angle sensor for the motor is in an abnormal state and a specific driving state is present, the controller controls one or more of the engine, the transmission, and the output clutch differently from when the sensor is in a normal state, and thereby maintains the rotation speed at the threshold or higher. The specific driving state is a state in which the rotation speed is lower than the threshold under the control when the sensor is in the normal state.

Drive control apparatus for electric vehicle

An electric vehicle includes a vehicle controller. The vehicle controller is capable of switching a traveling mode of the electric vehicle between a first traveling mode and a second traveling mode that applies driving-force maps for enhancing a rough-road capability from a rough-road capability in the first traveling mode. The vehicle controller is capable of switching the traveling mode to the second traveling mode in forward traveling and in backward traveling and is configured to apply, to the backward traveling in the second traveling mode, a first driving-force map of the driving-force maps, the first driving-force map having gentler characteristics than a second driving-force map of the driving-force map applied to the forward traveling in the second traveling mode.

Electric vehicle

Provided is a start-stop control apparatus to be mounted in a vehicle including an engine, a starter motor configured to restart the engine, and an auxiliary battery configured to supply electric power to the starter motor. The start-stop control apparatus includes a stop processing unit and an engine measuring unit. The stop processing unit stops idling of the engine while the vehicle is being stopped. The engine measuring unit measures an internal loss of the engine. The stop processing unit determines whether to stop the idling of the engine on the basis of the internal loss measured by the engine measuring unit and the state of charge of the auxiliary battery.

Start-stop control apparatus

A hybrid electric vehicle includes an engine, a motor, a battery, a coupling mechanism, an electric power generating mechanism, and a vehicle controller. The engine and motor drive driving wheels. The battery supplies electric power for running to the motor. The coupling mechanism switches coupling of the engine and the driving wheels between direct coupling and buffering coupling. The electric power generating mechanism generates electric power. The vehicle controller switches a running mode of the hybrid electric vehicle between a first running mode and a second running mode with higher running performance. The vehicle controller limits the electric power generation under a first condition when the buffering coupling is applied during the first running mode and limits the electric power generation under a second condition less limited than the first condition when the buffering coupling is applied during the second running mode.

Hybrid electric vehicle

A power supply system for a vehicle including a driving battery, first and second device batteries, a DC-to-DC converter, a control system device, and a specific device includes first and second power lines, first and second switches, and a coupling line. The first power line transmits power from the first device battery to the control system device. The second power line transmits power from the second device battery to the specific device. The first switch is coupled between the DC-to-DC converter and the first power line. The first switch includes a diode disposed in a direction to flow a current to the first power line. The coupling line is configured to transmit power from a node between the DC-to-DC converter and the first switch to the second power line. The second switch selectively opens and closes an electric circuit of the coupling line.

Power supply system in vehicle

A vehicle control apparatus for a vehicle provided with an engine and an electric motor includes a vehicle state evaluator, an exit evaluator, a shutdown evaluator, and a request output unit. The vehicle state evaluator conducts a vehicle stop evaluation and a driving state evaluation on the engine. The vehicle state evaluator evaluates whether the vehicle is stopped in a ready-on state in the vehicle stop evaluation. The exit evaluator conducts an exit evaluation as to whether an exit of an occupant from the vehicle is detected. The shutdown evaluator conducts a shutdown evaluation as to whether a vehicle drive system is to be shut down based on the results of the vehicle stop evaluation, the driving state evaluation, and the exit evaluation. The request output unit outputs a request for shutting down the vehicle drive system based on the result of the shutdown evaluation.

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Tokyo, Japan

Atsushi Doki