An experimental study to measure the evaporation rates, engine performance
and emission characteristics of used vegetable oil methyl ester and its
blends with producer gas on naturally aspirated vertical single cylinder
water cooled four stroke single cylinder diesel engine is presented. The
thermo-physical properties of all the bio fuel blends have been measured and
presented. Evaporation rates of used vegetable oil methyl ester and its
blends have been measured under slow convective environment of air flowing
with a constant temperature and the values are compared with fossil diesel.
Evaporation constants have been determined by using the droplet regression
rate data. The fossil diesel, biodiesel blends and producer gas have been
utilized in the test engine with different load conditions to evaluate the
performance and emission characteristics of diesel engine and the results are
compared with each other. From these observations, it could be noted that,
smoke and hydrocarbon drastically reduced with biodiesel in the standard
diesel engine without any modifications.