International Journal of Application or Innovation in Engineering & Management
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ISSN 2319 – 4847
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Call for Paper, Published Articles, Indexing Infromation Effect of injection timing on exhaust emissions and combustion characteristics of direct injection diesel engine with high grade insulated combustion chamber , Authors : N. Janardhan, M.V.S. Murali Krishna, Ch. Kesava Reddy and N.Durga Prasad, International Journal of Application or Innovation in Engineering & Management (IJAIEM), www.ijaiem.org
Volume & Issue no: Volume 3, Issue 12, December 2014

Title:
Effect of injection timing on exhaust emissions and combustion characteristics of direct injection diesel engine with high grade insulated combustion chamber
Author Name:
N. Janardhan, M.V.S. Murali Krishna, Ch. Kesava Reddy and N.Durga Prasad
Abstract:
ABSTRACT Experiments were carried out to study exhaust emissions and combustion characteristics of diesel engine with high grade heat rejection (LHR–3) combustion chamber consisting of air gap insulated piston with 3 mm air gap with superni (an alloy of nickel) crown, air gap insulated liner with superni insert and ceramic coated cylinder head with neat diesel with varied injection timing. Combustion diagnosis was carried out by using miniature Piezo electric transducer, TDC (top dead centre) and special pressure-crank angle software package at full load operation of the engine. Exhaust emissions of particulate emissions and nitrogen oxide (NOx) levels were determined at various values of brake mean effective pressure (BMEP) of the LHR–3 combustion chamber and compared with neat diesel operation on conventional engine (CE) at similar operating conditions. The optimum injection timing was found to be 31o bTDC (before top dead centre) with conventional engine, while it was 28o bTDC for engine with LHR–3combustion chamber with diesel operation. Engine with LHR–3 combustion chamber with neat diesel operation showed increased particulate emissions and NOx levels at manufacturer’s recommended injection timing of 27o bTDC, and the exhaust emissions and combustion characteristics improved marginally with advanced injection timing of 28o bTDC in comparison with same version of the combustion chamber at 27obTDC. Keywords:- Conservation of diesel, conventional engine, LHR combustion chamber, Performance.
Cite this article:
N. Janardhan, M.V.S. Murali Krishna, Ch. Kesava Reddy and N.Durga Prasad , " Effect of injection timing on exhaust emissions and combustion characteristics of direct injection diesel engine with high grade insulated combustion chamber " , International Journal of Application or Innovation in Engineering & Management (IJAIEM), Volume 3, Issue 12, December 2014 , pp. 213-221 , ISSN 2319 - 4847.
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