Optimization of Induction Length and Flow Rates of Acetylene in Diesel Engine

Meda, Venkata Saikumar (2011) Optimization of Induction Length and Flow Rates of Acetylene in Diesel Engine. MTech thesis.

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Abstract

The conventional petroleum fuels for internal combustion engines will be available for few years only, due to tremendous increase in the vehicular population. Moreover, these fuels cause serious environmental problems by emitting harmful gases into the atmosphere at higher rates. Generally, pollutants released by engines are CO, NOx, Unburnt hydrocarbons, smoke and limited amount of particulate matter. At present, alternative fuels like methyl esters of vegetable oil (commonly known as biodiesels), alcohols etc.which are in the form of liquid and hydrogen, acetylene, CNG, LPG etc. in gaseous fuels are in the line to replace the petroleum fuels for IC engines

In the present study an experimental investigation was carried out with acetylene as an alternative fuel in a compression ignition engine. Initially acetylene was inducted with 2lpm at different locations viz., 24cm, 40cm, 56cm and 70cm away from the intake manifold of the engine and diesel injected conventionally in the cylinder. The combustion, performance and emission characteristics of the diesel engine were evaluated, compared with diesel fuel operation. Based on the performance and emission parameters, the location of induction was optimized which was 56cm away from the engine manifold.

Further, with the optimum induction location of 56 cm, different flow rates of acetylene viz ., 2lpm, 3lpm, 4lpm and 5lpm were inducted while diesel was injected as main fuel. The combustion, performance and emission characteristics of the diesel engine were evaluated, compared with diesel fuel operation. The brake thermal efficiency of the engine while inducting with 3lpm it was found to be increased 0.5% than that of diesel. The emissions such as CO, UHC and NO are within the limits and better values than other flow rates. At 3lpm the heat energy shared by acetylene is 18.5% and it reduces diesel consumption by 19.5%. Based on the performance and emissions it was found that acetylene can be inducted at an optimum flow rate of 3lpm.

Item Type:	Thesis (MTech)
Uncontrolled Keywords:	Dual Fuel Mode, Acetylene fueled engine, Induction length, Induction Flow Rates
Subjects:	Engineering and Technology > Mechanical Engineering > Automobile Engineering
Divisions:	Engineering and Technology > Department of Mechanical Engineering
ID Code:	2790
Deposited By:	venkata saikumar meda
Deposited On:	06 Jun 2011 17:21
Last Modified:	06 Jun 2011 17:21
Supervisor(s):	Murugan, S