Place: Ramya sathianathan

polytechnic college.

Date : 30.01.2015. By RAJA RAM T.S

MANIKANDAN M

BLENDING OF ETHANOL IN GASOLINE FOR SPARK IGNITION ENGINES (Recent trends in blended fuel vehicle)

Ethanol has been known as a fuel for many decades.

How ever it is not widely used because of its high price.

Ethanol has some advantages over gasoline, such as better anti-knock characteristics and the reduction of CO.

INTRODUCTION

Although having these advantages, due to limitation in technology and economic, alcohol fuel still cannot be used extensively.

Using ethanol blended with gasoline is better than pure gasoline because of its renewability and less toxicity.

RESON OF GASOLINE – ETHANOL BLEND

Ethanol (C2H5OH) is a pure substance. And gasoline is composed of C4-C12 hydrocarbons.

Ethanol contains an oxygen atom so it viewed as a partially oxidized hydrocarbons.

Ethanol is completely miscible with water in all proportions, while the gasoline and water are immiscible.

MERITS OF ETHANOL OVER GASOLINE

Ethanol fuel has high octane rating and therefore it is considered efficient in terms of performance.

The combination of 15% gasoline and 85% ethanol is really helpful in starting engine in cold weather.

PERFECT RATIO OF ETHANOL-GASOLINE BLEND

All gasoline vehicles in use in the U.S. today can accept gasoline blended with up to 10% of ethanol(GASOHOL)

Flexible fuel vehicles are cars and trucks that can use any level of ethanol up to 85%.

USAGE

Produced renewably from agricultural crops or from recylced wates.

Used as motor fuel offers a way to reduce greenhouse gas emission from transportation sources.

Ethanol’s environmental characteristics

Ethanol is used along or along with gasoline concentrations to improve the working of engine.

Hence many types of ethanol like E85 containing 85% ethanol and 15% natural gas is a growing market today.

E85 is produced in mid western Europe expecially where there is abundance of corn crop.

The use of Ethanol in Cars

The automotive industry can be an important industry of any country. However it facing crisis since the fuel prices.

The ethanol car engines are really environment friendly. In order to reduce the burden of foreign oil from

economy it is important that we switch to ethanol cars.

Benefit of Ethanol on Economy

In this study, we found that using ethanol-gasoline blend, CO emission may be reduced by 10-30%.

While CO2 emission increases by 5-10% depending on engine condition.

The engine power and specific fuel consumption increase approximately by 5% and 2-3% respectively.

CONCLUSION

END