Toyota Jidosha Kabushiki Kaisha

Nippondenso Co., Ltd.

Yoshihiko Sano

Yoshiki Chujo

Ichiro Hosotani

Masahiko Miyahara

Hisataka Okado

Hiroaki Nishimura

A liquid mixing ratio detecting apparatus is designed so that an oscillation voltage generated by an oscillation unit is applied to one of a differentiating circuit and an integrating circuit, which is constituted by a combination of a capacitor composed of a pair of opposite electrodes for detecting a mixing ratio of a mixed liquid and a resistor, and a mixing ratio detecting unit produces a signal relating to an inclination rate of one of a differential waveform signal and an integration waveform signal, which is generated by one of the differentiating circuit and the integrating circuit, respectively, thereby obtaining a signal representing the mixing ratio of the mixed liquid on the basis of the produced signal relating to the inclination rate of the waveform signal.

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Okazaki, Japan

Yoshihiko Sano