Toyota Jidosha Kabushiki Kaisha

Other

Denso Corporation

Sumitomo Rubber Industries Limited

Nippon Soken, Inc.

Masahiro Yonetani

Hideki Ohashi

Yukio Mori

Takeyasu Taguchi

Yuichi Inoue

Masaaki Tabata

Takaji Umeno

Minao Yanase

Motonori Tominaga

Atsushi Ogawa

Yukio Nakao

Kazuhiro Kamiya

Toshiharu Naito

A vehicle body communication device () transmits a request signal to both a wheel side sensor () that is provided in a valve () of a wheel (), and a tire side sensor () that is embedded in a tire tread (). When the wheel side sensor () and the tire side sensor () receive the request signal from the vehicle body communication device (), respective return signals are transmitted to the vehicle body communication device (). The respective transmission patterns are set to be different.

Vehicle wheel information processing device and method therefor

A vehicle wheel speed is calculated based on a vehicle wheel speed signal outputted from a vehicle wheel speed sensor and a change width w which is an amplitude of a time change component of the calculated vehicle wheel speed. When the calculated change width w is equal to or more than a reference value wit is judged that a quick tire deformation is currently generated and a driver of the vehicle is informed of the quick deformation by actuating a warning device.

Tire information obtaining device, method for obtaining tire information and tire information obtaining program

A tire air pressure detection device includes an ideal driving status calculating portion () and a rotational status value compensating portion (). The ideal driving status calculating portion calculates an ideal status value (&#x3b2;id) corresponding to a slip value under an ideal driving status without tire slippage. The rational status value compensating portion calculates and ideal rotational status value under the ideal driving status without tire slip based on the regression line calculated by a regression line calculating portion () and the ideal slip status value calculated by the ideal driving status calculating portion.

Tire air pressure detection device for detecting air pressure based on vehicle speed signal

Tire air pressure determining apparatus and method of determining tire air pressure

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Toyota, Japan

Masahiro Yonetani