Hood operating system for motor vehicle, has control section to operate actuator to raise hood before car body deceleration since opposing external force exceeds threshold, when vehicle speed exceeds threshold

摘要

A control section (27) operates an actuator (26) to raise the hood (13) when satisfying three conditions where the car body deceleration due to opposing external force does not exceed threshold value, the time set by a timer (25) from start of external force application has elapsed and the vehicle speed has exceeded threshold value are satisfied simultaneously. The vehicle speed is detected by vehicle speed sensor (21) while bumber acceleration sensor (22) detects an acceleration acting on the bumber (11) by external force from front of vehicle. A car body acceleration sensor (23) detects the acceleration acting on the car body due to external force. A calculation section (24) converts detection information of the car body acceleration sensor into amount of car body deceleration. The timer starts counting time when a predetermined acceleration starts to act on the bumper. Hood is lifted by preset amount on satisfying the conditions.