Honda Motor Co., Ltd.

Keihin Corporation

Daisuke Hoshino

Tatsuya Ohzu

Yutaka Arimura

Shingo Soma

Yosuke Tanaka

Hirohito Ide

Yoshihiro Ito

Takayuki Abe

Takashi Sugawara

Shinichi Yataka

Kazuyuki Ohta

Michisuke Amano

Yusaku Suzuki

In an electric vehicle including a motor shaft connected to a drive motor, a counter shaft coupled with the motor shaft, a drive shaft coupled with the counter shaft, a drive wheel coupled with the drive shaft, a plurality of bearings configured to support the counter shaft, and a plurality of gears configured to rotate integrally with the counter shaft, a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.

Electric vehicle

A motor control apparatus drives an inverter which supplies and receives electric power with respect to a motor by pulse width modulation. The motor control apparatus sets a frequency of a carrier such that a frequency of a sideband wave component of the carrier which is used for the pulse width modulation and a frequency of a predetermined rotation order of the motor become different from each other.

Motor control apparatus

A motor unit includes a drive motor having an output shaft with a hollow portion, and a torque sensor arranged inside the hollow portion. The output shaft is formed by a magnetic body. A vehicle can include the motor unit. The drive motor can be a traction motor that generates traction drive force of the vehicle, for example.

Motor unit and vehicle

An electric vehicle includes a second rotating electric machine; a first transmission path configured to transmit force generated by the second rotating electric machine to a wheel; a first clutch that is arranged in the first transmission path and configured to switch between a connected state and a disconnected state between the second rotating electric machine and the wheel; and an ECU configured to control the second rotating electric machine and the first clutch. In the electric vehicle, a torque sensor is arranged between the first clutch and the wheel in the first transmission path.

A sensor unit includes a shaft having a hollow portion and a torque sensor that is arranged inside the hollow portion and detects torsional torque acting on the shaft from inside the shaft. A motor unit can include the sensor unit and a drive motor. A vehicle can include the motor unit. A drive motor can be a traction motor that generates a traction drive force for the vehicle, for example.

Sensor unit, motor unit, and vehicle

A drive motor includes a torque sensor on an outer circumference of a shaft. The drive motor includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a joint having a loose element. In the drive motor, the output shaft outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an upstream side of the joint in a range not overlapping with the joint.

Vehicular drive system

A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed on a second transmission path connecting a first rotary electric machine and a first branch point on a first transmission path. When a first switching device is placed in a connected state and a vehicle wheel is driven by an internal combustion engine, a control device causes an inverted phase torque, which is opposite in phase to a detected torque detected by the torque sensor, to be generated in the first rotary electric machine.

Vehicle and control method for vehicle

A motor unit including a drive motor that includes an output shaft having a hollow portion; a torque sensor arranged within the hollow portion; and a cooling mechanism. The cooling mechanism has one end of a coolant path arranged inside the hollow portion and cools the drive motor and the torque sensor. A vehicle can include the motor unit. The drive motor can act as a traction motor generating traction drive force of the vehicle.

A vehicle is equipped with a torque sensor configured to detect a torque, and which is disposed between an internal combustion engine and a first switching device on a first transmission path. When the first switching device is switched from a disconnected state to a connected state, a control device calculates a torque difference between a target torque of the internal combustion engine corresponding to a specified point on the first transmission path, and a detected torque or the like detected by the torque sensor. Further, the control device generates in a first rotary electric machine or a second rotary electric machine a compensation torque that compensates for the torque difference.

Hybrid vehicle and control method for hybrid vehicle

A drive motor in which a torque sensor is arranged on an outer circumference of a shaft, includes a rotor, a rotor shaft arranged inside the rotor, and an output shaft that is joined to the rotor shaft by a spline joint and outputs rotational force of the rotor shaft to the output side. The torque sensor is arranged on an output side of the spline joint in a range not overlapping with the spline joint.

Drive motor, electric vehicle, and drive motor control method

A load drive control system for a hybrid vehicle includes a zero current control execution device and an error compensating device. The zero current control execution device is configured to control a converter to output a substantially constant raised voltage that is higher than an inductive voltage generated in an electric motor. The error compensating device is configured to compensate for an attachment error of a first position detector based on a d-axis voltage command value for the electric motor calculated during zero current control.

Load drive control system for hybrid vehicle and method of controlling hybrid vehicle

A diagnosis device with a display unit diagnoses troubles of a vehicle by communicating with an electronic control unit of the vehicle. The diagnosis device displays, on the display unit, parameters relating to operation of the vehicle for selection of the parameters to be measured, and displays on the display unit, trigger condition for measuring the selected parameters to be measured such that triggering conditions for the parameters to be measured may be set.

Growing community of inventors

Wako, Japan

Daisuke Hoshino