Influence Of Gear Ratio Pattern On Vehicle Performance

Samsuri, Amirul (2018) Influence Of Gear Ratio Pattern On Vehicle Performance. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Influence Of Gear Ratio Pattern On Vehicle Performance.pdf - Submitted Version Download (816kB)

Abstract

In modern vehicle design, transmission is a crucial component that functions to deliver power and torque from engine to wheel so the vehicle can move based on desired speed. In general, 5 speed manual transmission consists of 5 sets of gear ratio with one set of final drive. It multiplies the torque produced by engine for each gear ratio in each shifts. This study concentrates on the effect of power output of transmission through different specifications of gear ratio to vehicle speed and acceleration. It involves the determination of total vehicle traction force as initial step and follows by obtaining the vehicle velocity by utilizing Newton Second Law. The transmission shifting procedure by using different sets of gear ratio is modelled by using Matlab Simulink software. The testing process is only carried out by using mathematical model simulation approach without any experimental works. The study on the effect on vehicle performance is only focusing on vehicle the top speed and acceleration (0 – 110 km/h). From the simulation results, vehicle performance can be analyzed and comparison is made between the results of different sets of gear ratio. The torque produces from custom 2 specification of gear ratio is higher than the standard version because of the closer range of gear ratio compare to others parameter. This custom 2 specification also produces better acceleration of 0 to 110km/h in just 8.8 seconds, as compared to standard version which clocks 14.4 seconds. In conclusion, this study shows that gear ratio influences the vehicle performance especially in terms of acceleration and top speed.

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