As the global climate starts to change due the exploitation of natural resources by human, internal combustion engines are no longer the favorite son of mankind. Instead, alternatives such as hybrid power systems and electric motors have drawn the attention of various car manufacturers and numerous scholars from worldwide. At the same time, the automobile industry has not given up internal combustion engines yet, and kept producing innovative engine designs aiming to minimize the negative impact of fossil-fuels on the environment. By researching, analyzing, and comparing data and information from various sources, this article will discuss the fundamentals and working basics of internal combustion engines, hybrid power systems and electric motors, the iconic innovations on internal combustion engines by several car manufacturers, and will compare traditional engines and its alternatives through various aspects. This essay will mainly focus on internal combustion engines and some of the more environmentally friendly alternatives available today, as well as a comparison between them and their advantages and disadvantages.
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