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Impact of EGR on Performance of CI Engine

Publication Date : 28/02/2015

Author(s) :

Kiran Thekedar , Tejrao Ghormade.

Volume/Issue :
Volume 2
Issue 2
(02 - 2015)

Abstract :

With the ever – increasing prices of gasoline, the diesel engines are replacing petrol engines at a faster rate, both in the field of vehicular and stationary applications. Attention of the public and researchers have focused mainly on diesel engines. Fuel reformulation as one of these key technologies is being seriously considered for smoke reduction. Exhaust gas Recirculation (EGR) has proved to be effective in reducing NOx. The tests have been conducted on a twin cylinder Dl diesel engine. Engine was modified for testing effect of EGR. Experiments are also conducted with 0%, 9%, 13% 21% and 26% EGR. Effect of EGR on smoke, NOx and other performance parameters such as brake specific fuel consumption, exhaust gas temperature, smoke density and brake thermal efficiency are evaluated. The experimentations were carried out on Exhaust Gas Recirculation on a four-stroke twin cylinder engine. It is proved that the exhaust gas recirculation has definite impact on NOx reduction. However this drop is at the expense of increase in smoke and fuel consumption. The smoke can be controlled using various smoke additives. Brake thermal efficiency decreases marginally with increasing EGR rates. Exhaust gas temperature incases with increase in EGR rates as the exhaust gas that is recirculated has higher temperature than the temperature of inlet air which results in increases in temperature of inlet air.

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Impact of EGR on Performance of CI Engine

February 24, 2015