| EFFECT OF TIRE INFLATION PRESSURE AND WHEEL FRONT TOE
ANGLE ON FUEL CONSUMPTION OF A LIGHT-DUTY VEHICLE |
| Riton Kumer Das , Md. Abu Mowazzem Hossain , Md. Tazul Islam , Sajal Chandra Banik |
| Department of Mechanical Engineering, Chittagong University of Engineering & Technology |
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| ABSTRACT |
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An experimental investigation was conducted in this study to assess the effect of the front toe angle and tire
pressure on the fuel efficiency of light-duty vehicles. According to the investigations, increasing the toe angle results in an
increase in rolling resistance, which has an impact on the fuel efficiency of the vehicle. It was observed that due to
misalignment of the front toe-in angle (0.00° to 5.06°) and front toe-out angle (0.00° to -5.06°), the car had traveled
approximately 7.38 km and 7.63 km less for the same amount of fuel. The rate of increase in fuel consumption was found to
be about 74 % and 79.31 %, respectively. Also, it was shown that under steady-state conditions, the rolling resistance varies
nonlinearly with tire inflation pressure while the fuel consumption varies nearly linearly. As the tire pressure lowered
(under-inflation, 22 psi), it was observed that the vehicle’s rolling resistance rose at a rate of nearly 85.10 % and fuel
consumption increased at a rate of nearly 40.29 %. In contrast, the rolling resistance and fuel consumption were considerably
reduced as the tire pressure increased from 33 psi to 42 psi (over-inflation). Finally, a regression model was proposed using
test data. Such a model would be useful to explain the relationship between the related factors and determine the rate of fuel
consumption. |
| Key Words:
Light-duty vehicle, Wheel alignment (front toe-in and toe-out angle), Tire pressure, Rolling resistance,
Fuel consumption |
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Corresponding Author.
Md. Abu Mowazzem Hossain , Email. 
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