Toyota Jidosha Kabushiki Kaisha

Takashi Doi

Masaaki Tabata

Atsushi Ogawa

Hideki Kusunoki

Shingo Urababa

Chikara Okazaki

Kazuhisa Meguro

Masaki Kanatani

Shinichi Tomioka

Kazuyoshi Wakabayashi

Hldeki Kusunoki

Kouichi Morita

A vehicle steering apparatus is an apparatus, mounted on a vehicle, for setting a target steering reaction force to be applied to a steering wheel on the basis of a steering angle and a vehicle speed and for performing reaction force control to apply the target steering reaction force, the vehicle steering apparatus provided with: a setting device for setting the target steering reaction force such that the target steering reaction force is less than a predetermined base steering reaction force if the vehicle speed is less than or equal to a predetermined base vehicle speed.

Vehicle steering apparatus

A detection/communication apparatus to be installed on a vehicle having a plurality of tires. The apparatus includes: (a) tire state detectors which are provided on the respective tires and each of which detects a state of a corresponding one of the tires; (b) local transceivers which are provided on the respective tires and which transmit tire data sets relating to the respective tires; (c) a central receiver which is provided on a vehicle body and which receives the tire data sets transmitted by the local transceivers; (d) a particular-signal transmitter which is provided on the vehicle body and which transmits a particular signal; and (e) data-transmission modifiers which are provided on the respective tires. Each of the data-transmission modifiers is operable depending upon a state of reception of the particular signal by a corresponding one of the local transceivers, to modify transmission of a corresponding one of the tire data sets by the corresponding one of the local transceivers.

Vehicle-tire-state detection/communication apparatus and tire-data communication apparatus

A tire-state obtaining apparatus operable to detect the states of tires of wheels and including (a) wheel-side devices each including a transmitter device (), and (b) a body-side device including a receiver device operable to receive tire information from the wheel-side devices, wherein the positions of the wheels from which sets of the tire information have been transmitted are determined on the basis of the condition in which the receiver device receives the tire information. The receiver device includes a plurality of antennas oriented to receive the tire information from the respective wheel-side devices, and the wheel corresponding to the antenna having the highest intensity of reception of the tire information can be determined as the wheel from which the tire information has been transmitted, so that the antennas need not be located near the respective wheels, to identify the wheels.

Tire-state obtaining apparatus

A vehicle tire information obtaining apparatus for obtaining tire information relating to a mounted tire and a non-mounted tire of a vehicle. The apparatus includes: (a) tire state detectors which are provided in the respective tires and each of which detects a state of the corresponding tire; (b) transmitters which are provided in the respective tires and which transmit tire data sets, as the tire information, each containing at least one tire-state data element representative of the detected state of the corresponding tire; (c) a receiver which is provided in a body of the vehicle and which receives the tire data sets transmitted by the transmitters; and (d) a non-mounted-tire information separator which separates the tire data set transmitted from the non-mounted tire, from the tire data set transmitted from the mounted tire.

Vehicle tire information obtaining apparatus and tire information processing apparatus

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Toyota, Japan

Takashi Doi