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Experimental Study on Hydrous Methanol Fuelled HCCI Engine Using Air Pre-Heater Assisted Controlled Auto Ignition

Muthu Venkatesan ; Department of Mechanical Engineering, University College of Engineering Nagercoil, Anna University: Tirunelveli Region, Konam, Nagercoil, Tamilnadu, India
Navaneethakrishnan Shenbaga Vinayaga Moorthi ; Department of Mechanical Engineering, University V.O.C College of Engineering, Tuticorin, Tamilnadu, India
Ramaiya Karthikeyan ; Department of Mechanical Engineering, Shri Andalalagar College of Engineering, Mamandur, Tamilnadu, India
Ayyasamy Manivannan ; Department of Mechanical Engineering, Regional Centre, Anna University, Tirunelveli, Tamilnadu, India

Sažetak

The present study investigates the performance and emission characteristics of a hydrous methanol fuelled homogeneous charge compression ignition (HCCI) engine using the air preheater assisted controlled auto-ignition method. The HCCI engine has the ability to ignite all kinds of engine fuels irrespective of their octane and cetane number and it has a great potential to reduce NOx and smoke emissions. In this study, a regular diesel engine has been modified to work as an HCCI engine. Hydrous methanol with 15% water is used in this HCCI engine and its performance and emission characteristics are investigated and analyzed. The intake air is preheated by a heater located on the suction side of the engine. The heater helps to raise the temperature of the air which in turn raises the temperature of the fuel-air mixture up to its autoignition point. The temperature of the preheated air is decided upon the load conditions. The experiments are conducted with hydrous methanol as engine fuel to determine the operating limit, heat release rate and exhaust emissions at different load conditions. The investigation reveals that the hydrous methanol operation reduces NO and smoke significantly more than the direct injection CI engine. Thus, hydrous methanol with 15% water operates well in an HCCI engine without any additional operational problems.

Ključne riječi

hydrous methanol; air pre-heater; performance; emission and combustion

Hrčak ID:

125667

URI

https://hrcak.srce.hr/125667

Datum izdavanja:

29.7.2014.

Posjeta: 1.677 *