Many pieces of research are emerging in the field of alternative fuel options for IC Engines. This article throws light on an alternative fuel for IC Engine, primarily comparison and similarities of Butanol and Diethyl Ether.
Butanol | Potential Alternative Fuel for IC Engine
Butanol is considered as a potential biofuel just like ethanol.
Butanol can be produced by fermentation of biomass by bacteria clostridium acetobutylicum. Butanol at 85% can be used in petrol engine without any engine modifications. Also contains more energy for a given volume than ethanol and almost as much as gasoline. Fuel consumption is comparable to gasoline. Butanol can also be blended with diesel to reduce (error) emissions. Butanol is more fuel efficient than ethanol, but ethanol can be produced at much lower cost with greater yield compared to Butanol.
Properties of Butanol
Boiling point: 1170C
Di-ethyl-ether (DEE) | Alternative Fuel for IC Engine (favourably diesel)
The ether is a renewable oxygenated fuel which has favourable characteristics to be used as a fuel additive for the diesel engine. With the use of DEE (diethyl ether), the engine performance improved significantly, the engine’s thermal efficiency increases and its fuel consumption decreases.
Properties of DEE
Calorific value: 36000KJ/kg
The comparison between Butanol and Diethyl Ether
Butanol is isomeric with diethyl ether and both butanol and DEE can be expressed by chemical formula C4 H10-O. n-butanol has been proposed as a substitute for diesel and gasoline fuel. On the other hand, Diethyl ether is highly volatile fuel and max from the explosive air-fuel mixture. It is used in combination with gasoline and diesel.
[Reference: "performance enhancement and emission reduction in HCCI engine fuelled with gasoline and DEE blend”.
Author: Rajesh Kathar, Girish Bhiogade, Dr. J. G. Suryawanshi.”International conference an advances in energy Research,IIT Bombay 12-14 Dec 2017]