Bridgestone Corporation

Nsk Corporation

The University of Tokyo

Kabushiki Kaisha Bridgestone

Keizo Akutagawa

Yasumichi Wakao

Osamu Shimizu

Hiroshi Fujimoto

Daisuke Gunji

Isao Kuwayama

Junichi Yamagishi

Takatsugu Hashimoto

Makoto Tanaka

Kazuo Yagawa

Hiroshi Shima

Masahiro Hojo

Kazuo Hachiya

Hiroki Sawada

Satoshi Hamatani

Yasuhiro Naito

Ken Yamaguchi

Takehiro Imura

Katsuhiro Hata

Katsuaki Hironaka

Takuya Takahashi

Daisuke Yamashita

A wireless power reception systemincludes: a power reception deviceincluding a power reception coilthat receives power supplied wirelessly from a power transmission coilof a power transmission deviceinstalled in a road surface, at least a portion of the power reception coilbeing housed in a wheelof a moving body; and a driving devicewhich is installed in the wheeland which drives the wheelwith power received by the power reception device, wherein the power reception deviceis provided with a converterand an inverter, at least a portion of the converterand at least a portion of the inverterare housed in the wheel, the converteris positioned vertically above the power reception coil, and the inverteris positioned vertically above the converter

Wireless power reception system, moving body, and wheel

A wireless power reception systemincludes: a power reception deviceincluding a power reception coilthat receives power supplied wirelessly from a power transmission coilof a power transmission deviceinstalled in a road surface, at least a portion of the power reception coilbeing housed in a wheelof a moving body; and an onboard devicewhich is installed in the moving bodyand which is electrically connected to the power reception device, wherein the power reception devicecan transmit received power to the onboard device, and the power reception coilincludes a stacked plurality of spiral coil layersand

A wireless power receiving system includes: a power receiving device having a power receiving coil configured to receive electric power supplied wirelessly from a power transmission coil of a power transmission device installed on a road surface, at least part of the power receiving coil being contained in a vehicle wheel; and in-vehicle devices installed in a mobile object, the in-vehicle devices being energizably connected to the power receiving device. The power receiving device transmits the received electric power to the in-vehicle devices.

Wireless power receiving system, mobile object, and vehicle wheel

An elastic response performance prediction method that employs a finite element analysis method to predict an elastic response performance expressing deformation behavior of a rubber product. The elastic response performance of the rubber product is predicted by employing a constitutive equation that expresses temperature and strain dependence of strain energy in the rubber product expressed using a parameter representing intermolecular interaction.

Rubber product elastic response performance prediction method, design method, and elastic response performance prediction apparatus

The present invention relates to a method for predicting a deformation behavior of a rubber material capable of accurately analyzing a deformation behavior of a rubber material even in a micro level, and more specifically, to a method for predicting a deformation behavior of a rubber material, including: generating a three-dimensional model of the rubber material formed by adding a filler to a rubber; applying a configuration condition specifying a relationship between a stress and a strain on the basis of thickness information and temperature information obtained on the basis of a molecular dynamics approach to a rubber layer portion constituting the three-dimensional model; and, analyzing the deformation behavior of the rubber material. Further, in the method for predicting a deformation behavior of a rubber material, it is preferable that the deformation behavior of the rubber material is analyzed by applying a finite element method to the three-dimensional model to which the configuration condition is applied.

Device for predicting deformation behavior of rubber material and method for predicting deformation behavior of rubber material

A car control apparatus including a wheel sensor, wheel torque calculating means for calculating wheel torque from the wheel speed, drive force detecting means for detecting drive force generated by an electric motor, car body drive force calculating means for calculating car body drive force from the above drive force and wheel torque, car body drive force fluctuating component extracting means for extracting multiple frequency band fluctuating components of the car body drive force, and drive or braking force control unit for controlling the running state of a car.

Car control method and car control apparatus

When feedback control is carried out to ensure that the drive torque of an electric motor for driving each wheel of a vehicle should be equal to a motor torque instruction value, micro-vibration is applied to each tire by superposing a micro-vibration signal to a drive signal for the above electric motor to change the slip ratio-friction characteristics themselves of the tire to control friction force between the tire and the surface of a road, thereby controlling the running performance of the vehicle.

Vehicle control method and vehicle control apparatus

This invention relates to a pneumatic tire coated with a water-based electrically conductive coating, in which the coating contains a carbon black having a nitrogen adsorption specific surface area (N.sub.2 SA) of 70 m.sup.2 /g-180 m.sup.2 /g and a dibutyl phtalate (DBP) absorption of 70 ml/100 g-180 ml/100 g, a surface active agent and a rubber ingredient.

Pneumatic tire provided with electrically conductive coating

In a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer, a sidewall rubber layer extending inward from each side edge of the tread rubber layer toward the vicinity of a bead portion in radial direction and a rubber chafer layer arranged in the vicinity of the bead portion, a flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount at least 20% by weight of the tread rubber layer. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and have excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

Growing community of inventors

Tokyo, Japan

Keizo Akutagawa