Up-shift Spectrum Analysis of 29 Tractors Available in India

摘要

To know the present status of up-shift pattern of Indian tractors a representative up-shift analysis of different 29 models of tractors selected from 8 different companies has been performed. The analysis has proved most of the models produced in India have irregular up-shift pattern. This irregular up-shift pattern may be one of the main reasons of shift discomfort, unpredictable ground speed change, higher noise and vibration, speed mismatch, higher hand ball impulse, shortening of life of gear-shift associated parts etc. Design of gearbox of some models showed regular up-shift. So the present study reveals that ample scope is there to improve the design of gearbox of Indian tractors in the light of up-shift analysis.