sisämoottorit
Sisämoottorit, commonly known as internal combustion engines, are heat engines where the combustion of a fuel occurs with an oxidizer in a combustion chamber that is an integral part of the working fluid flow circuit. The expansion of the hot combustion gases produces useful work for an external mechanism. This is different from external combustion engines, such as steam engines, where the heat is transferred to the working fluid by a separate heat source.
The most common types of internal combustion engines are the four-stroke and two-stroke engines. The four-stroke
The fuel used in internal combustion engines can vary, but common examples include gasoline, diesel fuel, and