**3.6 Role of alodine EC ethanol corrosion resistant coating in the IC engine**

Eventhough emulsified fuel is much cheaper in cost, by considering the cost economics further cheaper based on the water addition: ethanol, surfactant, additive, water are having basically corrosive in nature.

In normal day by day experience, any technical knowledge person could understand / come across that, the direct corrosion for the petro products used engine. In addition to the pert products, above mentioned emulsified fuel and its based chemicals are having the properties to damage the engine and engine parts easily. Based on the above statement, it is prove that, the life span of the engine gets reduced in faster rate.

So, emulsified fuel is having the advantage of being solution for the depletion of fossil fuels, could be used directly to the current existing engine, easily available, bio products based, it having its own disadvantages of corroding the engine parts very easily. Particularly the minute parts like fuel injector, fuel injection system, filter, piston, cylinder etc., gets corrode rapidly with faster rate / easily and the every where the problem will be raised in future, if the engine runs with emulsified fuel.

Based on this, in this present work, making the above mentioned engine parts to be saved from the chemical corrosion from petro products based emulsified fuel by giving a Alodine EC ethanol corrosion resistant coating, with minimum level thickness to the emulsified fuel holding / carrying engine parts and the parts which is kept in contact with emulsified fuel.
