Study of performance and prediction of heat releace in compression ignition engin working on ethyl alcohol and gas-oil solution

الملخص EN

The effect of using solutions of ethanol and gas-oil (duel fuel ) to fuel the diesel engine on engine performance and heat release have been studied experimentally.

A single cylinder diesel engine type Recardo (E6 / US) was used and the ethanol percentage in the solution was varied from 0 to 20 percent.

The results showed that, in general, addition of ethanol to gas-oil cause the maximum power output to decrease at medium and high range of speed and it was nearly the same as that of the straight gas-oil at low speed ranges.

The specific fuel consumption of the dual is nearly the same as that of straight gas-oil at low and medium ranges of load.

But at high ranges of load the specific fuel consumption was increase.

In general, the addition of ethanol to gas-oil cause the maximum rate of heat release to increase during the first stage of combustion and decrease during the second stage of combustion.

Further substitution of gas-oil with ethanol (higher than 20 percent) was limited by knock.