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Installation of LPG to Two Stroke Gasoline Engine

Published on Feb 12, 2017


An attempt has been made in this project to use alternative fuel in two stroke Gasoline engine. Our fore most aim in selecting this project is to use non-conventional fuel against conventional fuel which is becoming scare and costly now days. With this air is less polluted than conventional fuels. It is also good with regard to economical considerations.

In our project, we have installed LPG fuel system to two stroke vehicle where in we can use both gasoline and LPG. The alterations made to install LPG in the vehicle are discussed. LPG from storage tank comes to the adjustable regular through a primary delivery valve fitted at the mouth of the LPG cylinder.


Gasoline is basically a volatile liquid fuel mixture of hydro carbons. As described already it is a by product during the distillation of crude mineral oil and refining it further by other processes. It does not have a fine composition. The constituents vary depending upon the origin of the crude mineral oil


Installation of LPG

LPG has the tendency to escape readily to atmosphere from poor sealing flow units. With properly sealed carburettor, rubber hoses, copper tubes, joints and elbows in the system, safety can be ensured. At most care is necessary while handling the gas and the auxiliaries LPG cylinder valve, cylinder non return regular connected to it, particularly due to the following.

 Because of its high calorific value as little as 1.55% of LPG in gas air mixture is highly inflammable.

 A raise in temperature increases the pressure in the storage tank and causes the liquid contents to expand.

 Naked flame, while hot items should not be there.

 Test for leaks with soap water or linked oil and never with an open flame.

 When the engine is stopped the LPG supply from cylinder through the solenoid is turned off.

 The vehicle with LPG cylinder is not exposed to sun.

 The LPG flows through tubes should not touch the rotating parts and hence clamped.

 Outlet regulator should be closed either by manually or by solenoid type.


 It is one of the costliest liquid fuels.

 Due to its high calorific valve, it produces more heat.

 In gasoline engine, the fuel does not burn completely and hence carbon deposit in the combustion chamber is more.

 Compression ratio in gasoline engines can not be increased and hence lesser torque is developed.

 Residue and oil contamination is more as it burns incompletely and hence decreases engine life.

 It has lesser octane rating.

 When burns, it emits poisonous gas called carbon monoxide.

 Due to incombustible gases, the air is polluted. Gum content is more in gasoline engines.

 Maintenance cost is more.

 It gives less mileage when compared with LPG

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