Title: Application of Shainin® Component Search™ approach as root cause analysis tool for drop in two-wheeler fuel economy

Authors: Dhruv Panchal; Bhavesh Patel; Darshit Shah

Addresses: Department of Mechanical Engineering, L.D. College of Engineering, Ahmedabad 380015, India ' Department of Mechanical Engineering, L.D. College of Engineering, Ahmedabad 380015, India ' Department of Mechanical Engineering, L.D. College of Engineering, Ahmedabad 380015, India

Abstract: The fuel economy of continuous variable transmission (CVT) scooters drops about 15% of claimed value in city driving conditions. The present study deals with the finding of root causes for drop in fuel economy of CVT driven scooters. An attempt has been made for resolution of the problem using Shainin® methodology with Component Search tool. 110 cc scooters were selected for the comparison of best of the best (BOB) assembly and worst of the worst (WOW) assembly. After the systematic elimination process, clutch friction liner, rubber belt, and CVT fly masses have been found as contributing components to the root problem for drop in fuel economy. The findings have been validated through capping run and factorial analysis. Contribution of significant components and interactions has been derived using analysis of variance (ANOVA).

Keywords: Shainin® methodology; Component Search; Red X; Pink X; Pale Pink X; fuel economy; continuous variable transmission; CVT; centrifugal clutch; rubber V-belt.

DOI: 10.1504/IJSSCA.2020.10032569

International Journal of Six Sigma and Competitive Advantage, 2020 Vol.12 No.2/3, pp.187 - 208

Received: 07 May 2020
Accepted: 28 May 2020

Published online: 20 Oct 2020 *

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