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Title: Optimizing diesel engine parameters for emission reduction using Taguchi method: Variation risk analysis approach – Part II
Authors: Nataraj, M
Arunachalam, V P
Dhandapani, N
Issue Date: Dec-2005
Publisher: CSIR
IPC CodeF02B
Abstract: Taguchi parameter design research methodology allows one to make products or processes robust to uncontrollable noise factors and will also reduce the number of experiments to be carried out to arrive an optimized system. The main objective of this work is to study the various operating parameters of diesel engine to propose modified engine parameter (optimum) settings for reduction in NOX, HC, CO and smoke concentrations simultaneously in diesel emission by applying Taguchi parameter design concept. Taguchi L18 (2137) quality design concept mixed orthogonal array has been used to determine the S/N ratio (dB), analysis of variance (ANOVA) and F0 test values for recognizing most significant engine operating parameters that influence exhaust emission. The experimental results give an idea about how the variations in engine settings like nozzle spray holes, piston-to-head clearance, nozzle protrusion, injection control pressure, start of injection timing and swirl level alter the pollutant (NOX, HC, CO and smoke) intensity in emission. Considering these significant engine-operating parameters, verification of the improvement in the quality characteristics for emission reduction has been done through confirmation test with reference to the chosen initial or reference parameter settings. These confirmation test results prove that the optimal combination of diesel engine parameters obtained from the investigation reducing the pollutant levels in exhaust emission in reality.
Page(s): 505-514
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.12(6) [December 2005]

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