Abstract:
Due to poor economic conditions, individuals ,1ike to use
cars of old models on roads. Actual fuel consumption of these
cars is substantially more than that of the cars of new models.
The new model cars have more efficient engines, better
transmission and drive system, and better aerodynamics of the car
body which decrease the fuel consumption of the new model cars.
Moreover, less efficiejengines
more pollutants through exhaust.
of old cars cause it to emit
This research work includes
various commonly used cars to study the actual fuel
consumption. Toyota cars of various models were selected for
study of fuel consumption and their exhaust gas emissions
CO2, HC).
(CO,
In this experiment, cars were driven on roads and actual
fuel consumptions were recorded by using of ali tre-meter. Exhaust
gas components were also determined by an exhaust gas analyzer.
Fuel consumption of a '92-model car was found to be about
45% less than that of a '73 model car. The consumptions of fuel
of all other newer model of cars were measured and it was found model cars are not only economic in fuel consumption but also
less hazardous for human health and for climatic condition. The
use of new vehicles, in national perspective, may reduce the fuel
budget by 25% which amounts to about Tk 250 crores a year or so.
to be less proportionat","ly. This is due to better designs of
engines and accessories ;-,;"--~
Exhaust gas components, CO, HC and CO2, were measured. Harmful
gas, CO was found to be about' 21.71% less in a' 92 model car
as compared to the value of a'73 model car. Other pollutants were
'also found to be less in recent cars.This shows that the recent
