Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Aisin Corporation

Nippon Gasket Company, Ltd.

Kenji Uchida

Masaya Amano

Tomoko Oba

Takaharu Hori

Shunya Kato

Nobuyuki Tanaka

Takahiko Hirasawa

Yuki Hayakawa

Mitsuru Maeda

Tadaaki Watanabe

Go Hayasaka

Tooru Matsubara

Kazuyuki Shiiba

Takeshi Kitahata

Kazuya Yoshijima

Yasutaka Tsuchida

Ryoji Sato

Takuro Kumada

Shinjiro Ashida

Yoshizo Akita

Yasuhiro Terao

Hisato Nishida

Naoya Kanada

Toru Takasu

Kenji Tahara

Masahito Ozaki

A vehicle includes: an instrument panel that displays an alarm to a driver; and an ECU that controls the instrument panel based on a setting as to whether the driver is to perform maintenance of the vehicle or not. In a first setting in which the driver is to perform maintenance, the ECU controls the instrument panel to display an alarm when a failure occurs in an on-vehicle device. In a second setting in which the driver is not to perform maintenance, the ECU controls the instrument panel not to display an alarm about a failure less influencing traveling.

Vehicle

A server includes a storage device that stores history information indicating a history of a state of a vehicle, and a controller that performs a process using the history information. The controller makes a first determination of whether or not a vehicle load exceeds a first load. For the vehicle for which it has been determined that the vehicle load is higher than the first load in the first determination, the controller makes a second determination of whether or not an environmental load is higher than a second load. When it is determined that the environmental load is higher than the second load in the second determination, the controller outputs an area change request requesting a change of the dispatch area of the vehicle to another dispatch area lower in the environmental load than a current dispatch area.

Information providing system and information providing method

A power control ECU controls electric power and engine power of a hybrid vehicle. The power control ECU includes a request driving force calculating portion that calculates a request driving force calculated in accordance with an accelerator operation amount, a travel driving force calculating portion that calculates a travel driving force as a value that belatedly follows the request driving force, and a dashpot control processing portion. The dashpot control processing portion sets a value of the request driving force as a value of a final request driving force used to calculate request engine power when a difference of the request driving force with respect to the travel driving force is less than a predetermined positive value, and sets a value that belatedly follows the request driving force when the difference is greater than or equal to the predetermined positive value.

Control apparatus for hybrid vehicle

A vehicle includes two accelerator position sensors and an electronic control unit. The two accelerator position sensors are configured to detect accelerator operation amounts. The electronic control unit is configured to perform drive control based on the accelerator operation amounts from the two accelerator position sensors. The electronic control unit is configured to, when failure occurs in one accelerator position sensor out of the two accelerator position sensors, perform the drive control based on the accelerator operation amount from the other accelerator position sensor out of the two accelerator position sensors, the accelerator operation amount being restricted by an accelerator operation amount upper limit that has a tendency of becoming larger as the vehicle speed is larger.

Vehicle and control method for vehicle

A hybrid vehicle is equipped with a drive unit, and an automatic transmission. The automatic transmission includes engagement elements that can transmit power between the drive unit and driving wheels. The drive unit includes an engine, a first motor generator, a second motor generator, and a planetary gear mechanism. The hybrid vehicle is further equipped with a mechanical oil pump and an electrical oil pump, and a controller. The controller continues operating the electrical oil pump while the internal combustion engine is not in operation after the internal combustion engine is stopped as a result of a system stop operation by a user while the vehicle is running at a vehicle speed equal to or higher than a predetermined value.

Hybrid vehicle

A drive system shifts an inverter from a gate blocking state to a three phase-on state. When it is determined that electric current flows in a diode of an upper arm of the inverter by referring to a phase current of each phase of a motor, the drive system turns on a switching element of the upper arm and thereby shifts the inverter to an upper arm three phase-on state. When it is determined that electric current flows in a diode of a lower arm of the inverter by referring to the phase current of each phase, the drive system turns on a switching element of the lower arm and thereby shifts the inverter to a lower arm three phase-on state.

Drive system

When a voltage (auxiliary power supply voltage) on an auxiliary power supply line is instantaneously decreased to be smaller than a resetting voltage, a resetting operation is automatically started in each of the MG-ECU and the HV-ECU to perform an initialization process. After the resetting operation of the MG-ECU and/or the HV-ECU, the MG-ECU causes a converter to start a forced discharging operation when a DC voltage of a first smoothing capacitor is higher than a first reference voltage, and/or when a DC voltage of a second smoothing capacitor is higher than a second reference voltage.

Power supply system for electrically powered vehicle

A vehicle includes an engine, a first motor generator, a second motor generator, a transmission, a differential device, and an electronic control unit. The transmission includes an input shaft, an output shaft, and a clutch. The electronic control unit is configured to detect a rotation speed difference between the input shaft and the output shaft when the clutch is controlled so as to be brought into a power transmission shut-off state. The electronic control unit is configured to, when the rotation speed difference detected by the electronic control unit is smaller than a target rotation speed difference between the input shaft and the output shaft that occurs in a case where the power transmission shut-off state of the clutch is established, suppress cranking of the engine by the first motor generator.

When an engine is in a stopped state and a rotation speed of a first rotating electric machine is not within a range in which the engine can be started by a drag torque generated by three-phase-short-circuit control, an electronic control unit performs transmission control of an automatic transmission such that the rotation speed of the first rotating electric machine falls within the range.

A PM-ECU configured to control a drive torque of a vehicle is configured to be stopped in response to a driver's operation of a start switch and then activated in response to a driver's re-operation of the start switch. The PM-ECU is configured to be activated and place a restriction on the drive torque of the vehicle, in response to a re-operation of the start switch after the PM-ECU is stopped in response to an operation of the start switch. The PM-ECU is configured to remove the restriction on the drive torque in response to a reduction of an operation amount by which an accelerator pedal is operated.

Control system of vehicle

A vehicle includes a motor, a resolver which detects a rotation angle of the motor, an automatic transmission which shifts rotation of the motor and transmits the shifted rotation to a drive shaft, and an ECU which performs learning control for correcting an error of the resolver and shift control of the automatic transmission. The ECU controls the automatic transmission such that, when the learning control is performed, a gear ratio becomes higher at a prescribed vehicle speed, than that when the learning control is not performed. By controlling the automatic transmission as described above, even when the vehicle is traveling at a low speed, a rotation speed of the motor easily reaches a rotation speed at and above which the learning control of the resolver can be performed. Accordingly, an opportunity to perform the learning control of the resolver can be obtained early.

A vehicle including an AC rotating electric machine, an inverter, and an electronic control unit is provided. When an overcurrent abnormality occurs, i.e., phase current of a motor-generator exceeds a permissible value, in a high rotational speed region, the electronic control unit performs control (upshift control) for shifting up an automatic transmission provided between the motor-generator and driving wheels, or control (neutral control) for bringing the transmission into a released state, so as to reduce the rotational speed of the motor-generator. If phase current is detected even when an all-gate turn-off command is generated to the inverter while the rotational speed of the motor-generator is reduced to be within a low rotational speed region under the upshift control or neutral control, the electronic control unit determines that a short-circuit fault occurs in the inverter.

Vehicle including rotating electric machine, inverter, and electronic control unit; and control method for the same

A vehicle includes an engine, first and second motor generators, a power split device, a propeller shaft, an automatic transmission, and an ECU. The power split device includes a carrier, a sun gear, and a ring gear respectively coupled to a crankshaft of the engine, a rotor of the first motor generator, and a rotation shaft of the second motor generator. The automatic transmission is provided between the second motor generator and a propeller shaft. When the first motor generator has a malfunction, the ECU restricts gear shift performed by the automatic transmission, as compared with a case where the second motor generator has a malfunction.

A metal gasketincludes a pair of bead platesandhaving a cylinder holecorresponding to a cylinder bore, a full beadsurrounding the cylinder hole, a first intermediate plateinterposed between the pair of bead plates, and a shim plateinterposed between the first intermediate plate and one bead plate in an area around the cylinder hole. The shim plateis disposed to overlap with the full bead, and the thickness of a contact portionto contact with the shim plateof the first intermediate plate changes in the peripheral direction of the cylinder hole.

Metal gasket

An inverter converts input DC power into AC power and supplies the AC power to a motor generator. An inverter control unit executes shutdown control for stopping power conversion by the inverter, when operation of the motor generator is not requested. A transmission control unit controls the transmission. When a state quantity related to a rotation speed of the motor generator increases to a prescribed quantity during execution of the shutdown control, the inverter control unit continues the shutdown control and the transmission control unit executes shift control for controlling the transmission to reduce the rotation speed of the motor generator.

Growing community of inventors

Nagoya, Japan

Kenji Uchida