Toyota Jidosha Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Toshihiro Kawai

Yasushi Kusaka

Toru Ono

Shinichi Inoue

Takashi Tsukiyama

Takanori Kawazu

Kiyoshi Naiki

Takeshi Murakami

Koichi Maruyama

Fumihiro Shinkai

Yumi Kondo

Yuuya Yoshitomi

A vehicle control device mounted on a vehicle includes: an operation detection unit that detects an operation performed on the vehicle by a user; a power supply control unit that controls execution of power supply from a first battery involved in vehicle traveling to an auxiliary load powered by a second battery that is different from the first battery, with a start switch of the vehicle being off; and a prohibition control unit that prohibits the power supply to the auxiliary load by the power supply control unit, in response to the operation of the user detected by the operation detection unit.

Vehicle control device, method, program, and vehicle

A battery cell short circuit detection device includes: a control unit that controls operation of a direct current-direct current converter; a first acquisition unit that acquires a storage rate of the battery; a second acquisition unit that acquires a current flowing into the battery and a current flowing out of the battery when the direct current-direct current converter is operating; a third acquisition unit that acquires a terminal voltage value that is a voltage that appears at a terminal of the battery when the direct current-direct current converter is not operating; and a determination unit that determines presence or absence of the short circuit between the battery cells based on an average storage rate indicating an average value of the storage rate of the battery, an average inflow current value indicating an average value of the current flowing into the battery, and the terminal voltage value.

Battery cell short circuit detection device, method, and storage medium

A vehicle control device for a vehicle includes a processor. The vehicle includes a first battery, a second battery, an auxiliary load powered by the second battery, and a DC-to-DC converter configured to supply electric power from the first battery to either the second battery or the auxiliary load, or to both of the second battery or the auxiliary load. The processor is configured to: determine the state of a start switch and the boarding state of the vehicle; acquire the voltage of the second battery; and when the processor determines that the vehicle is in a non-started on-board state, determine based on the voltage of the second battery an order in which the DC-to-DC converter and the auxiliary load are driven. The non-started on-board state is a state in which the start switch is off and a user is presumed to be in the vehicle.

Vehicle control device, control method, non-transitory storage medium, and vehicle

A vehicle control apparatus mounted on a vehicle including a DC-DC converter that supplies electric power from a first battery to a second battery and an auxiliary load includes an electronic control unit configured to control an operation of the converter, determine a state of a starter switch of the vehicle, detect a user operation to the vehicle, and acquire charging status information of the second battery. The electronic control unit is configured to, when the electronic control unit detects a first operation by the user and determines that the starter switch is off, drive the converter such that the converter charges the second battery, and, when an electric power amount charged in the second battery reaches a target amount of charge set based on an amount of electric power to be consumed by the auxiliary load while the starter switch is off, stop the converter.

Vehicle control apparatus, control method, non-transitory storage medium, and vehicle

A starter includes a pinion gear that can be engaged with a ring gear coupled to a crank shaft of an engine, an actuator that moves the pinion gear to a position where the pinion gear is engaged with a ring gear, and a motor that rotates the pinion gear. An ECU stops the engine when a predetermined stop condition is satisfied, and cranks the engine with a motor when a predetermined start condition is satisfied after the engine is stopped. The motor and the actuator are supplied with electric power from a battery. The ECU includes a mode in which the motor is driven prior to driving of the actuator. The ECU restricts a stop of the engine if, of a decreased voltage of the battery after driving the motor and a decreased voltage of the battery after driving the actuator, the lower voltage falls below a threshold value.

Apparatus for starting engine and method of controlling engine

An internal combustion engine includes: an exhaust heat collector, in which exhaust gas exchanges heat with engine coolant, that heats the engine coolant; an EGR mechanism that recirculates a part of the exhaust gas to an intake passage through an EGR passage that branches from an exhaust passage; and an EGR cooler that cools the exhaust gas flowing through the EGR passage through heat exchange with the engine coolant supplied from the exhaust heat collector.

Internal combustion engine

A gas introducing structure of an intake path includes a gas introducing path introducing a gas into an intake airflow in the intake path of an internal combustion engine, wherein an inner peripheral surface of the gas introducing path is made of a bottom surface appearing as a straight line at a lower side of a perpendicular cross section of the inner peripheral surface and a curved wall surface appearing as a convex curved line, connecting with each end of the straight line at an angle, at an upper side of the perpendicular cross section of the inner peripheral surface.

Growing community of inventors

Toyota, Japan

Toshihiro Kawai