Design and analysis of six-stroke engine by using the alternative fuel to enhance thermal efficiency

Abstract

The Six-Stroke cycle consists of a standard four-stroke Otto Cycle followed by a heat recovering and expansion cycle. Therefore, this processing power uses heat and increases the engine's overall efficiency. To recover the waste heat, various methods are being adopted, and significant modifications to the conventional internal combustion engine must be done. In this paper, the improvement of the Six-Stroke engine performance is observed by varying the working fuel used in the Six-Stroke. The limitation of the Six-Stroke is described, and an idea for the alternative six-stroke cycle is to increase the amount of heat recovered. The performance of the six-stroke engine is observed with Petrol, Methanol, Ethanol, and Propane fuels with required thermodynamic analysis. To know the amount of percentage of waste energy, additional strokes are recorded and thermal efficiency calculated. For the Six-stroke, the general design of the piston is noticed and simulated. It is concluded that Methanol and Ethanol had the most significant feature for the Six-Stroke engine.