different types of fuels used in ic engines

It was found that the combustion irreversibility was dominated by the combustion temperature rather than the fuel structure. The peak efficiency of ideal cycles and the combined efficiency with a waste heat recovery system were also estimated in this study to assess opportunities for further efficiency gains.

The impact on the efficiency, losses, and irreversibility with respect to various parameters such as fuel, injection strategy, intake condition, more » and port injected water mass was quantified. As such, in this work first and second law thermodynamics analysis were applied to experiments with gasoline compression ignition at an engine speed of 1038 rpm and brake mean effective pressure of 1.4 MPa on a 12.4 L multi-cylinder heavy-duty diesel engine. For further efficiency improvement, a better understanding of energy and exergy loss mechanisms is required. Previous studies by the authors demonstrated that utilizing port and direct injection of E85 gasoline simultaneously resulted in the best performance and the highest brake thermal efficiency of 47.1%, which was 1.2% higher compared to diesel baseline. In light of these limitations, high temperature combustion with reduced amounts of exhaust gas recirculation appears more practical. However, key technical barriers to achieving low temperature combustion on multi-cylinder engines include the air handling system (limited amount of exhaust gas recirculation) as well as mechanical engine limitations (e.g. Gasoline compression ignition using a single gasoline-type fuel for direct/port injection has been shown as a method to achieve low temperature combustion with low engine-out NO x and soot emissions and high indicated thermal efficiency.

Different types of fuels used in ic engines