§ 86.1804-01 - Acronyms and abbreviations.

§ 86.1804-01 Acronyms and abbreviations.

The following abbreviations apply to this subpart:

A/C - Air conditioning.

AECD - Auxiliary emission control device.

A/F - Air/Fuel

ALVW - Adjusted Loaded Vehicle Weight.

API - American Petroleum Institute.

ASTM - American Society for Testing and Materials.

BAT - Bench-Aging Time

C - Celsius.

cfm - Cubic feet per minute.

CFV - Critical flow venturi.

CFV-CVS - Critical flow venturi - constant volume sampler.

CH3OH - Methanol.

CID - Cubic inch displacement.

Cl - Chemiluminescence.

CO - Carbon monoxide.

CO2 - Carbon dioxide.

conc. - Concentration.

CST - Certification Short Test.

cu. in. - Cubic inch(es).

CVS - Constant volume sampler.

DDV - Durability Data Vehicle.

deg. - Degree(s).

DNPH - 2,4-dinitrophenylhydrazine.

EDV - Emission Data Vehicle.

EP - End point.

ETW - Equivalent test weight.

F - Fahrenheit.

FEL - Family Emission Limit.

FID - Flame ionization detector.

ft. - Feet.

FTP - Federal Test Procedure.

g - gram(s).

gal. - U.S. gallon(s).

GC - Gas chromatograph.

GVW - Gross vehicle weight.

GVWR - Gross vehicle weight rating.

H2O - Water.

HC - Hydrocarbon(s).

HCHO - Formaldehyde.

HDV - Heavy-duty vehicle.

HEV - Hybrid electric vehicle.

HFID - Heated flame ionization detector.

Hg - Mercury.

HLDT - Heavy light-duty truck. Includes only those trucks over 6000 pounds GVWR (LDT3s and LDT4s).

HLDT/MDPV - Heavy light-duty trucks and medium-duty passenger vehicles.

hp - Horsepower.

HPLC - High-pressure liquid chromatography.

IBP - Initial boiling point.

in. - Inch(es).

IUVP - In-Use Verification Program.

K - Kelvin.

kg - Kilogram(s).

km - Kilometer(s).

kPa - Kilopascal(s).

lb. - Pound(s).

LDT1 - Light-duty truck 1.

LDT2 - Light-duty truck 2.

LDT3 - Light-duty truck 3.

LDT4 - Light-duty truck 4.

LDV/LLDT - Light-duty vehicles and light light-duty trucks. Includes only those trucks rated at 6000 pounds GVWR or less (LDT1s and LDT2s).

LDV/T - Light-duty vehicles and light-duty trucks. This term is used collectively to include, or to show that a provision applies to, all light-duty vehicles and all categories of light-duty trucks, i.e.

LDT1, LDT2, LDT3 and LDT4.

LEV - Low Emission Vehicle.

LPG - Liquefied Petroleum Gas.

m - Meter(s).

max. - Maximum.

MDPV - Medium-duty passenger vehicle.

mg - Milligram(s).

mi. - Mile(s).

min. - Minimum.

ml - Milliliter(s).

mm - Millimeter(s).

mph - Miles per hour.

mV - Millivolt

N2 - Nitrogen.

NDIR - Nondispersive infrared.

NLEV - Refers to the National Low Emission Vehicle Program. Regulations governing this program are found at subpart R of this part.

NMHC - Nonmethane Hydrocarbons.

NMHCE - Non-Methane Hydrocarbon Equivalent.

NMOG - Non-methane organic gases.

NO - nitric oxide.

No. - Number.

O2 - Oxygen.

OEM - Original equipment manufacturer.

NO2 - Nitrogen dioxide.

NO_X - Oxides of nitrogen.

Pb - Lead.

pct. - Percent.

PDP-CVS - Positive displacement pump - constant volume sampler.

ppm - Parts per million by volume.

PM - Particulate Matter.

ppm C - Parts per million, carbon.

psi - Pounds per square inch.

R - Rankin.

RAF - Reactivity adjustment factor.

rpm - Revolutions per minute.

RVP - Reid vapor pressure.

s - Second(s).

SAE - Society of Automotive Engineers.

SBC - Standard Bench Cycle

SFTP - Supplemental Federal Test Procedure.

SI - International system of units.

SRC - Standard Road Cycle

SULEV - Super Ultra Low Emission Vehicle.

TD - dispensed fuel temperature.

THC - Total Hydrocarbons.

THCE - Total Hydrocarbon Equivalent.

TLEV - Transitional Low Emission Vehicle.

UDDS - Urban dynamometer driving schedule.

ULEV - Ultra Low Emission Vehicle.

UV - Ultraviolet.

vs - Versus.

W - Watt(s).

WOT - Wide open throttle.

Wt. - Weight.

ZEV - Zero Emission Vehicle.

[64 FR 23925, May 4, 1999, as amended at 65 FR 6852, Feb. 10, 2000; 65 FR 59965, Oct. 6, 2000; 71 FR 2829, Jan. 17, 2006]