Editing Engine block (section)

{{short description|Part of an internal combustion engine}}
{{more citations needed|date=March 2022}}
[[File:Cylinder block for V6 Diesel.jpg|thumb|Block of a modern [[V6 engine|V6]] [[diesel engine]]. The large holes are the cylinders, the small round orifices are mounting holes, and the small oval orifices adjacent to the cylinders are coolant or oil ducts.]]

In an [[internal combustion engine]], the '''engine block''' is the structure that contains the [[cylinder (engine)|cylinders]] and other components. The engine block in an early automotive engine consisted of just the cylinder block, to which a separate [[crankcase]] was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single component. Engine blocks often also include elements such as [[Internal_combustion_engine_cooling#Liquid_cooling|coolant]] passages and [[Motor oil|oil]] galleries.

The term "cylinder block" is often used interchangeably with "engine block". However, technically, the block of a modern engine (i.e., multiple cylinders integrated with another component) would be classified as a [[monobloc engine|monobloc]].

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