# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 4.1: General abbreviations ACAlternating current CFVCritical flow venturi CFOCritical flow orifice CLDChemiluminescent detector CLAChemiluminescent analyser CVSConstant volume sampler DCDirect current ETEvaporation tube Extra High 2 Class 2 WLTC extra high speed phase Extra High 3 Class 3 WLTC extra high speed phase FCHVFuel cell hybrid vehicle FIDFlame ionisation detector FSDFull scale deflection GCGas chromatograph HEPAHigh efficiency particulate air (filter) HFIDHeated flame ionisation detector High 2 Class 2 WLTC high speed phase High 3a Class 3a WLTC high speed phase High 3b Class 3b WLTC high speed phase ICEInternal combustion engine LoDLimit of detection LoQLimit of quantification Low 1 Class 1 WLTC low speed phase Low 2 Class 2 WLTC low speed phase Low 3 Class 3 WLTC low speed phase Medium 1 Class 1 WLTC medium speed phase Medium 2 Class 2 WLTC medium speed phase Medium 3a Class 3a WLTC medium speed phase Medium 3b Class 3b WLTC medium speed phase LCLiquid chromatography LPGLiquefied petroleum gas NDIRNon-dispersive infrared (analyser) NDUVNon-dispersive ultraviolet NG/biomethaneNatural gas/biomethane NMCNon-methane cutter NOVC-FCHVNot off-vehicle charging fuel cell hybrid vehicle NOVCNot off-vehicle charging NOVC-HEVNot off-vehicle charging hybrid electric vehicle OVC-HEVOff-vehicle charging hybrid electric vehicle PaParticulate mass collected on the background filter PeParticulate mass collected on the sample filter PAOPoly-alpha-olefin PCFParticle pre-classifier PCRFParticle concentration reduction factor PDPPositive displacement pump PERPure electric range Per cent FSPer cent of full scale PMParticulate matter emissions PNParticle number emissions PNCParticle number counter PND1First particle number dilution device PND2Second particle number dilution device PTSParticle transfer system PTTParticle transfer tube QCL-IRInfrared quantum cascade laser RCDACharge-depleting actual range RCBREESS charge balance REESSRechargeable electric energy storage system RRC Rolling resistance coefficient SSVSubsonic venturi USFMUltrasonic flow meter VPRVolatile particle remover WLTCWorldwide light-duty test cycle --- Source: https://www.legislation.gov.uk/eur/2017/1151/annex/XXI/division/1/division/4/division/4.1 (the official version) Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-XXI/division-1/division-4/division-4.1 Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.