Abstract
Rcently with improving high-speed performance of vehicle, the wiper characteristics can not be performed enough because the wiper lift acting on the wiper blade decrease of power which press the wiper blade on the windshield. It has been believed that the lift acting on the wiper blade become the maximum at 90° incidense of high speed air. Thus we have been always using 90° incidense when the flow analysis and the lift analysis acting on the wiper blade. However it is not yet cleared that the effect of incidence of high speed air on the lift characteristics acting on the wiper blade. So we measured the incidense of high speed air and the wiper lift characteristics at every wiping angle by using passenger-car, mini-ban and RV vehicles. As the result, the wiper lift becomes the maximum near 50° incidence of high speed in spite of difference of vehicles.
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