![]() ![]() ![]() This implies that the size and characteristics of today's engines vary widely between large diesels having cylinder bores exceeding 1,000 mm and reciprocating at speeds as low as 100 rpm to small gasoline two-stroke engines with cylinder bores around 20 mm. Internal combustion engines are used in applications ranging from marine propulsion and power generating sets with capacity exceeding 100 MW to hand-held tools where the power delivered is less than 100 W. Although Gas Turbines satisfy the definition of an IC engine, the term has been traditionally associated with spark-ignition (sometimes called Otto, gasoline or petrol engines) and diesel engines (or compression-ignition engines). It is this specific point, that fuel is burned inside the work-producing part of the engine, that gives IC engines their name and distinguishes them from other types such as external combustion engines. Its purpose is to generate mechanical power from the chemical energy contained in the fuel and released through combustion of the fuel inside the engine. The internal combustion (IC) engine has been the dominant prime mover in our society since its invention in the last quarter of the 19th century. ![]()
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