18-06-2013, 01:17 PM
Experimental Investigation on LPG as Alternative Fuel for Two Wheelers
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Abstract-
An attempt has been made in this paper to use alternative fuel in four stroke Gasoline engine. Our fore most aim in selecting this paper is to use non conventional fuel against conventional fuel which is becoming scarce and costly now days. With this air is less polluted than conventional fuels. It is also good with regard to economical considerations. In our paper we have installed LPG fuel system to four stroke vehicles, where in we can use both gasoline and LPG.LPG from storage tank comes to the adjustable regulator through a primary delivery valve fitted at the mouth of the LPG cylinder.
INTRODUCTION
The LPG means Liquefied Petroleum Gas. It is also called as bottled gas (or) Refinery gas. It is obtained as a by product during cracking of heavy crude oils or from directly obtained natural gas. The LPG obtained either from cracking or from CNG (Compressed Natural Gas) is dehydrated, desulphurised and traces of organic sulphide (Mercaptans) are added to give warning of gas leak. It is then filled in cylinders and compressed to that extend the fuel gas in liquid state and supplied under the trade name like INDANE-BURSHANE, and many other such suppliers. The calorific value is 11,900 Kcal/kg approximately. Natural gas technology I.C engines beats the current emission standards for hydro carbons (HC) and nitrous oxide (NO) by more than two thirds and level for carbon dioxide (CO) by more half. LPG consists of Hydrocarbons of such volatility that they can exist as gas under atmospheric pressure but can be readily liquefied under pressure.
Petrol Solenoid Valve
The Petrol Solenoid Valve is an electromagnetic device widely used in carburetor vehicles. Its function is to stop the flow of Petrol when vehicle is running with LPG and vice versa when the vehicle is operated with Petrol. The petrol Solenoid valve is installed in the line of Petrol fuel near the engine compartment. The Petrol Solenoid valve is normally closed when electricity is switched off. It is basically composed of a shutter operated by a magnetic coil and two nipples. It is also equipped with an emergency device to manually reset the petrol flow in case of a break down in the electrical system.
Mixers with Carburetors
The mixer with carburetor has an extremely importance. The right AIR- FUEL ration depends on the mixer and this is the reason for the existence of so many versions bearing so many shapes. The mixer for vehicles equipped with a carburetor may be manufactured with a specific Venturi or by implanting a nozzle in the proximity of the carburetor's original Venturi. The nozzle system type mixer can perform very well if executed with care and knowledge. In any way, is good to remember, that this system is not always possible to adapt to all carburetors and if not properly installed it may create irreversible damages to the carburetor.
PROCESS DESCRIPTION
LPG from tank passes to the low pressure gassifire, in gassifire the diaphragm pressurizes the LPG to the pressure required inside the engine cylinder. Further this LPG passes to the LPG solenoid valve this electromagnetic device supplies LPG to the carburetor through nozzle in right amount. Operator of vehicle is capable of switching both LPG and petrol to engine by changeover switch.
WHY LPG FOR TWO WHEELER?
LPG is a state of Art Technology for small engines 50 cc to 375 cc air cooled, single cylinder 2 stroke as well 4 stroke vehicles. Sole Objective to introduce this Technology, is to declare liquid fuel (Petrol) Carburetor based technology as obsolete, used presently world wide on 2 Wheelers and 3 wheelers. World’s scientific community and automobile engineers must discard this carburetor device, as it is impractical for carburetor to mix air and petrol in accurate and in metered quantity to suit the ever changing and variable engine requirements. Carburetor technology has failed to control the uneven supply of petrol with the incoming air stream to engine at various levels. It is inbuilt and inherent draw back that in some circumstances the sucking air stream sucks excess petrol at carburetor ventury, resulting in petrol wastage and pollution.
CONCLUSION
Low fuel consumption based on best vaporization.
Perfect system for bio-fuel (gasoline, LPG. and CNG) and Monofuel (LPG or CNG only).
Due to combustion very low effect on environment.
Easy and convenient work by small size and light weight
More efficiency as compared to other fuels.
Due to LPG there is no effect on engine operation
Save fuel save money