Effect of Compression Ratio and Fuel Injection Pressure on the Performance and Emissions of a CI Engine with Methyl Esters of Pongamia Oil

Authors

  • A R Babu Research Scholar, Department of Mechanical Engineering NIT,Warangal-506004, Telangana State
  • G Amba Prasad Rao Professor, Mechanical Engineering Department NIT Warangal India
  • T Hari Prasad Professor Department of Mechanical Engineering, Sree Vidyanikethan Engineering College, Autonomous, Rangampet, Tirupati, 517127, Andhra Pradesh, India

Keywords:

Diesel engine, Pongamia methyl esters, Injection pressures, Compression ratio, Exhaust emissions

Abstract

Diesel fueled compression ignition engines are invariably used in light, medium and heavy duty applications. Heavy dependence on petroleum derived diesel fuel has led to the twin problems of loss of exchequer and environmental pollution. The intensive research revealed that transesterified vegetable oils could be the best substitute for existing diesel engines. The present paper deals with experimental investigations on a typical compression ignition engine when it was run at constant speed with methyl ester of Pongamia oil (non-edible type). Simultaneous effect of compression ratio (16.5 and 19) and fuel injection pressures (190, 210 and 230 bar) on performance and emissions of the chosen engine we reexamined. The baseline data represent the information on the performance of the engine when it was run with petrol-diesel at rated FIP of 190 bar and CR 16.5. The engine was successfully run with neat methyl esters of pongamia oil. The brake thermal efficiency was observered to be high at an injection pressure of 210 bar and CR 16.5 where as efficiency was high for CR of 19 at the rated injection pressure of 190 bar. A percentage increase of about 20% was observed in NOx emission with PME compared to petro-diesel operation. It is observed that compression ratio has a dominant effect on performance where as fuel injection pressure has played a vital role in the reduction of emissions.

 

 

Keywords: Diesel engine, pongamia methyl esters, injection pressures, compression ratio, exhaust emissions

 


Cite this Article

Babu AR, Amba Prasad Rao G, Hari Prasad T. Effect of Compression Ratio and Fuel Injection Pressure on the Performance and Emissions of a CI Engine with Methyl Esters of Pongamia Oil. Journal of Alternate Energy Sources and Technologies. 2015; 6(3): 8-17p.

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Published

2015-09-23

Issue

Vol. 6 No. 3 (2015)

Section

Research Article

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