Division 4.1 General abbreviations

Alternating current

Critical flow venturi

Critical flow orifice

Chemiluminescent detector

Chemiluminescent analyser

Constant volume sampler

Direct current

Evaporation tube

Class 2 WLTC extra high speed phase

Class 3 WLTC extra high speed phase

Fuel cell hybrid vehicle

Flame ionisation detector

Full scale deflection

Gas chromatograph

High efficiency particulate air (filter)

Heated flame ionisation detector

Class 2 WLTC high speed phase

Class 3a WLTC high speed phase

Class 3b WLTC high speed phase

Internal combustion engine

Limit of detection

Limit of quantification

Class 1 WLTC low speed phase

Class 2 WLTC low speed phase

Class 3 WLTC low speed phase

Class 1 WLTC medium speed phase

Class 2 WLTC medium speed phase

Class 3a WLTC medium speed phase

Class 3b WLTC medium speed phase

Liquid chromatography

Liquefied petroleum gas

Non-dispersive infrared (analyser)

Non-dispersive ultraviolet

Natural gas/biomethane

Non-methane cutter

Not off-vehicle charging fuel cell hybrid vehicle

Not off-vehicle charging

Not off-vehicle charging hybrid electric vehicle

Off-vehicle charging hybrid electric vehicle

Particulate mass collected on the background filter

Particulate mass collected on the sample filter

Poly-alpha-olefin

Particle pre-classifier

Particle concentration reduction factor

Positive displacement pump

Pure electric range

Per cent of full scale

Particulate matter emissions

Particle number emissions

Particle number counter

First particle number dilution device

Second particle number dilution device

Particle transfer system

Particle transfer tube

Infrared quantum cascade laser

Charge-depleting actual range

REESS charge balance

Rechargeable electric energy storage system

Rolling resistance coefficient

Subsonic venturi

Ultrasonic flow meter

Volatile particle remover

Worldwide light-duty test cycle