Toyota Jidosha Kogyo Kabushiki Kaisha

Nippondenso Co., Ltd.

Yohei Watanabe

Jiro Nakano

Hiroshi Arai

Jun Ohta

Yasuhiko Sakurai

Nobumasa Higo

The idle air flow is adjusted by a step motor depending upon a drive signal applied to the step motor, so as to control the idling rotational speed of the engine. When the engine is under a certain operating condition during cranking, in which condition the step motor cannot be normally actuated, the drive signal is inhibited from being applied to the step motor.

Method and apparatus for controlling the idling rotational speed of an

A central warning apparatus for vehicles which comprises a plurality of sensors mounted to the plurality of portions of vehicle to be inspected, discriminator circuits for discriminating an abnormal state of the sensors, display units connected to the discriminator circuits so as to be effected in response to the abnormal state, an OR-gate circuit connected to the output of respective discriminator circuits, and a main warning unit connected to the OR-gate circuit so as to be effected by an output therefrom for warning that there arises an abnormal state at at least one of portions to be inspected.

Central warning apparatus for vehicles

Growing community of inventors

Okazaki, Japan

Yohei Watanabe