Drag reduction apparatus of transportation vehicle having a fixed separation point and drag reduction method

摘要

PURPOSE: A drag reducing device of a carrier with a fixed separation point and a method thereof are provided to reduce fuel consumption by actively decreasing drag force with applying to a bus or a truck at a low cost, and to increase energy efficiency by using a piezoelectric ceramic oscillator. CONSTITUTION: A drag reducing device is used for a carrier(1) having the box type rear part for loading such as a truck or a bus with the fixed separation point, and composed of a vibrating apparatus(10) having a vibration surface(10a) vibrating up and down or right and left around the fixed separation point such as a rear corner of the carrier. The vibrating apparatus comprises a piezoelectric ceramic actuator having a piezoelectric ceramic oscillator installed in the rear corner of the carrier, a blade contacted to the piezoelectric ceramic oscillator and amplified and oscillated by vibration of the end, and a control unit applying alternating current to the piezoelectric ceramic oscillator to vibrate the piezoelectric ceramic oscillator.