Impression of Automatically Engine Start Sound of Hybrid Vehicle

Abstract

In this study, we investigated an impression of engine automatically start sounds for charging electricity of hybrid electric vehicles having idling reduction function. Subjective evaluation test employing various idling sounds of hybrid vehicles were carried out. As a result, uneasiness feeling was found to be increased by the automatic engine start sound. In addition, appropriate range of engine rotational speed and loudness of the engine sound were investigated not to deteriorate the uneasiness feeling in cabin at the idling condition.