Directed against the pollutant emission status of civil aero engine

the development of low-emissions combustion technology described is done.The standards for international civil aviation organization(ICAO) aircraft engine emissions and regulations of civil aviation administration of China(CAAC) exhaust emission are given.The formation mechanisms of exhaust emissions are summarized.Various factors influencing pollutant formation and improved approaches decreasing exhaust emission are discussed.The key features

combustion concept and application of six advanced low-emissions combustors(staged

variable geometry

and catalytic combustor

lean premixed prevaporized(LPP)

rich-burn

quick-mix

lean-burn(RQL) and twin annular premixing swirler(TAPS)) are detailed.In these low-emission combustors

staged combustor is the foundational design scheme LPP

RQLand TAPScombustors have widely developed perspective.Some novel low-emission combustion concept

such as lean direct injection

fuel cell and active combustor control are recommended.These new low-emissions technology are very useful

however many formidable problems remain to be solved before the systems can be applied to advanced aircraft engines.