Reducing and Optimizing Tailgate Closing Effort in Automotive Car

Abstract

This Project investigated the scope of automotive tailgate closure closing effort and optimization. Tailgate closing effort can be reduced with the aid of car body dimensional analysis and corrections. Dimensional analysis mainly deals about dimensional position of car body, seal gap at rear tailgate closure, margin and flushness between tail lamp and tailgate, bumper and tailgate, roof and tail gate. Dimensional position investigates car body and sub assembly manufacturing controls to ensure dimensional repeatability by using fixture integrity concepts, and incoming level supplier part dimensional variations. Fixture integrity concepts mainly focus to bring the car body towards nominal of its dimensional position. Seal gap at rear tailgate closure is a gap between weather strips mounting at framed body flange to tailgate resting surface. More seal gap gives less closing effort, more wind noise and less seal gap gives more closing effort, less wind noise. Margin and flushness between outer peripheral supports wind noise. Closures closing effort, Wind noise and air leak is integrated parameters in automotive car body.