Abstract
The requirement for the advancement of internal combustion (IC) engines and enhance methods for the combustion cycle is increasing day by day. The four-stroke combustion engine is extensively used due to better fuel economy and less exhaust smoke. However, the major drawback includes a considerable amount of extra heat energy generation that directly adds up to waste energy. In order to overcome the limitation, the idea of computing two extra strokes in the four-stroke engine to utilize the waste energy has been introduced. The six-stroke engine has significantly improved the fuel working ratio per cycle. Incorporating alternative fuels like hydrogen and HHO into six-stroke technology increases efficiency and minimizes exhaust emissions. A six-stroke engine could be the solution for making hybrid automobile technology more convenient. The review article aims to thoroughly understand the underlying principles behind the improved efficiency of a six-stroke cylinder engine. The researches on the six-stroke cylinder engine are summarized in the literature review. The design configuration of alternative fuels is discussed towards the end of the paper.
Highlights
Enhancing the efficiency of the engine has turned out to be one of the most challenging problems in today’s world
The six-stroke engine is a revolutionary concept with a huge potential of improving performance in future automobiles
The improved efficiency is due to the recovery of energy from the engine's combustion gases
Summary
Enhancing the efficiency of the engine has turned out to be one of the most challenging problems in today’s world. The modern-day developments in engine improvement are an effort to achieve ever purifier engines which are ruled via extra and more stringent emission policies and aim at reducing intake and emissions. The expansion ratio is thoroughly connected to the efficiency of a reciprocating IC engine. Surge in the expansion ratio permits an increase in fuel consumption efficiency. Researchers have invested several years to figure out how to enhance the thermal efficiency of IC engines. An overwhelming percentage of IC engines operate on four-stroke IC engines because of their
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