Editing Whyte notation (section)

=== Internal combustion locomotives ===
{{redirect|8w (locomotive)||8W (disambiguation)#Rail transport}}
The wheel arrangement of small [[Diesel locomotive|diesel]] and [[Petrol locomotive|petrol]] locomotives can be classified using the same notation as steam locomotives, e.g. 0-4-0, 0-6-0, 0-8-0. Where the axles are coupled by chains or shafts (rather than side rods) or are individually driven, the terms 4w (4-''wheeled''), 6w (6-wheeled) or 8w (8-wheeled) are generally used. For larger locomotives, the [[UIC classification]] is more commonly used.

Various suffixes are also used to denote the different types of internal combustion locomotives:<ref name=irs/>
{|class=wikitable
!Suffix
!Meaning
!Example
|-
|PM
|[[Petrol-mechanical locomotive]]
|{{whyte|4w|PM}}
|-
|PE
|[[Petrol-electric locomotive]]
|{{whyte|0-6-0|PE}}
|-
|D
|[[Diesel locomotive]]
|{{whyte|6w|D}}
|-
|DM
|[[Diesel–mechanical locomotive]]
|{{whyte|8w|DM}}
|-
|DE
|[[Diesel–electric locomotive]]
|{{whyte|0-4-0|DE}}
|-
|DH
|[[Diesel–hydraulic locomotive]]
|{{whyte|0-6-0|DH}}
|}