What is Internal combustion engine?
{{no sources|date=February 2022}} [[File:4-Stroke-Engine.gif|thumb|right|An animation showing a four-stroke engine running.]] An '''internal combustion engine''' is an [[engine]] in which [[combustion]], or the [[fire|burning]] of [[fuel]], occurs on the inside. This differs from [[external combustion engine]]s where the fire is outside the engine, such as a [[steam engine]]. There are many kinds of internal combustion engine but the term often means the [[machine]] that [[Niklaus Otto]] invented. {{cn}} In this kind, fire makes pressure increase inside a [[Cylinder (engine)|cylinder]]. The pressure pushes a [[piston]] which is attached to a wheel by a [[Crankshaft|crank]]. The rod pushes the wheel and makes it [[Rotation|spin]] around. The spinning wheel is attached to other wheels. The engine is very strong and can make all the wheels move. == Engine layouts == There can be many kinds of internal combustion engines such as the single piston engine, the inline engine, the flat engine, the V engine, the VR engine, the W engine, the X engine, the U engine, the H engine, the horizontal K engine, the opposed piston engine, the delta engine, the [[Wankel engine|Wankel]] or rotary engine and the [[radial engine]] which is commonly used in planes. === Common layouts === The most common [[Layout|layouts]] among these engines are the V layout, and the inline layout. In the V engine, the pistons are aligned in a V shape. There can be V twin engines, with 2 pistons, V3 engines, V4 engines, [[V6 engine|V6 engines]], [[V8 engine|V8 engines]], up to V24 engines. The VR layout is the same as a V layout except the angle between the V shape is smaller making the overall drive smoother. In inline engines, the pistons are aligned in a straight line. There can be inline 1 engines, also called a singular piston engine, all the way up to a straight 14 which was mainly used in older models of cars. Flat engines are the same as inline engines but are aligned [[Horizontal|horizontally]]. W, X, U, H, Horizontal K, Delta and opposed p