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Optimization of operational parameters on performance and emissions of a diesel engine using biodiesel
Sivaramakrishnan, K. & Ravikumar, P.
Abstract
This work investigates the influence of compression
ratio on the performance and emissions of a diesel
engine using biodiesel (10, 20, 30, and 50 %) blendeddiesel
fuel. Test was carried out using four different
compression ratios (17.5, 17.7, 17.9 and 18.1). The
experiments were designed using a statistical tool known as
design of experiments based on response surface methodology.
The resultant models of the response surface
methodology were helpful to predict the response parameters
such as brake specific fuel consumption, brake thermal
efficiency, carbon monoxide, hydrocarbon and
nitrogen oxides. The results showed that best results for
brake thermal efficiency and brake specific fuel consumption
were observed at increased compression ratio. For all
test fuels, an increase in compression ratio leads to
decrease in the carbon monoxide and hydrocarbon emissions
while nitrogen oxide emissions increase. Optimization
of parameters was performed using the desirability
approach of the response surface methodology for better
performance and lower emission. A compression ratio
17.9, 10 % of fuel blend and 3.81 kW of power could be
considered as the optimum parameters for the test engine.
Keywords
Biofuel; Compression ratio; Energy; Karanja; Response
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