Editing Miller cycle (section)

{{Short description|Thermodynamic cycle}}
{{thermodynamics|cTopic=Processes and Cycles}}
In [[engineering]], the '''Miller cycle''' is a [[thermodynamic cycle]] used in a type of [[internal combustion engine]].  The Miller cycle was patented by '''Ralph Miller''', an [[United States|American]] engineer, {{US patent|2817322}} dated Dec 24, 1957. The engine may be [[two-stroke engine|two-]] or [[four-stroke engine|four-stroke]] and may be run on [[diesel fuel]], gases, or dual fuel.<ref name=US2817322>{{cite patent| country = US | number = 2817322 | status = patent | title = Supercharged Engine | gdate = 1957-12-24 | fdate = 1956-04-30 | inventor = Ralph Miller | url = http://www.google.com/patents/US2817322}}</ref> It uses a [[supercharger]] or a [[turbocharger]] to offset the performance loss of the [[Atkinson cycle]].

This type of engine was first used in ships and stationary power-generating plants, and is now used for some railway locomotives such as the [[GE PowerHaul]]. It was adapted by [[Mazda]] for their [[Mazda K engine#KJ-ZEM|KJ-ZEM]] [[V6]], used in the [[Mazda Millenia|Millenia]] sedan, and in their Eunos 800 sedan (Australia) luxury cars. [[Subaru]] combined a Miller-cycle [[flat-4]] with a [[Hybrid car|hybrid]] driveline for their concept "Turbo Parallel Hybrid" car, known as the [[Subaru B5 TPH|Subaru B5-TPH]]. [[Nissan]] introduced a small three-cylinder engine with variable intake valve timing that claims to operate an [[Atkinson cycle]] at low load (thus the lower power density is not a handicap) and a Miller cycle when under light boost.