Honda Motor Co., Ltd.

Yoshitake Sakai

Hiroaki Horii

Fumihiro Morishita

Hiroyuki Koibuchi

Kyoji Hamamoto

Shinji Hironaka

Takuji Wada

Hiroki Sagami

Yuki Shiga

A vehicular engine control device provided with a control unit for performing control that automatically stops an engine installed in a vehicle when a preset stop condition is fulfilled, and a traveling information acquiring unit for acquiring travel information including vehicle speed information relating to the speed of the vehicle and steering information relating to a steering wheel. For the stop condition the vehicle speed information and steering information acquired by the traveling information acquiring unit are set including respective thresholds. The control unit switches the stop condition in accordance with changes in the vehicle speed information, the stop condition being sectioned into a plurality of regions using steering thresholds for the steering information relating to the steering handle. Automatic stop control of the engine conforming to the intentions of the driver can be implemented by the vehicular engine control device.

Vehicular engine control device

Disclosed is an idle stop control device capable of relieving reaction force (kickback) of a handle occurring at idle stop controlled by the control of the idle stop control device. Specifically, an EPSECU () detects the rotational speed of an electric motor by detecting the rotational angle (&#x3b8;) of the electric motor using a resolver (), and at the same time, detects the steering torque using a torque sensor (). Subsequently, the EPSECU determines whether or not the rotational speed of the electric motor and the steering torque are inside an idle stop transition area (P) by referring to a table () stored in a memory () in advance. When either or both of the rotational speed of the electric motor and the steering torque are outside the idle stop transition area (P), a signal requesting the prohibition of idle stop transition is output to an idle stop control device () via a cable (). Upon receiving the signal requesting the prohibition of idle stop transition, the idle stop control device () prohibits the control of transition to idle stop even when conditions for idle stop are met.

Idle stop control device

Growing community of inventors

Wako, Japan

Yoshitake Sakai