Title 40

SECTION 92.3

92.3 Abbreviations.

§ 92.3 Abbreviations.

The abbreviations of this section apply to all subparts of this part and have the following meanings:

ANSI - American National Standards Institute API - American Petroleum Institute ASTM - American Society for Testing and Materials BHP - Brake horsepower BSCO - Brake specific carbon monoxide BSHC - Brake specific hydrocarbons BSNOX - Brake specific oxides of nitrogen °C - Celsius cfh - cubic feet per hour cfm - cubic feet per minute CFV - Critical flow venturi CL - Chemiluminescence CO - Carbon monoxide CO2 - Carbon dioxide cu in - cubic inch(es) CVS - Constant volume sampler EP - End point EPA - Environmental Protection Agency °F - Fahrenheit FEL - Family emission limit FID - Flame ionization detector ft - foot or feet g - gram(s) gal - U.S. gallon GC - Gas Chromatograph h - hour(s) H2O - water HC - hydrocarbon HFID - Heated flame ionization detector Hg - Mercury hp - horsepower IBP - Initial boiling point in - inch(es) K - Kelvin kg - kilogram(s) km - kilometer(s) kPa - kilopascal(s) lb - pound(s) LPG - Liquified Petroleum Gas m - meter(s) max - maximum mg - milligram(s) mi - mile(s) min - minute ml - milliliter(s) mm - millimeter mph - miles per hour mv - millivolt(s) N2 - nitrogen NDIR - Nondispersive infrared NMHC - Non-methane hydrocarbons NO - nitric oxide NO2 - nitrogen dioxide NOX - oxides of nitrogen No. - number O2 - oxygen pct - percent PM - particulate matter ppm - parts per million by volume ppmC - parts per million, carbon psi - pounds per square inch psig - pounds per square inch gauge °R - Rankin rpm - revolutions per minute s - second(s) SAE - Society of Automotive Engineers SI - International system of units (i.e., metric) THCE - Total hydrocarbon equivalent U.S. - United States V - volt(s) vs - versus W - watt(s) wt - weight

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