Title 40

SECTION 86.078-3

86.078-3 Abbreviations.

§ 86.078-3 Abbreviations.

The abbreviations in this section apply to this subpart and also to subparts B, D, H, I, J, N, O and P of this part and have the following meanings:

accel. - acceleration. AECD - Auxiliary emission control device. 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. CFV - Critical flow venturi. CFV-CVS - Critical flow venturi - constant volume sampler. CH4 methane. CL - Chemiluminescence. CO2 - carbon dioxide. CO - Carbon monoxide. conc. - concentration. cfm - cubic feet per minute. CT - Closed throttle. cu. in. - cubic inch(es). CVS - Constant volume sampler. decel. - deceleration. EP - End point. evap. - evaporative. F - Fahrenheit. FID - Flame ionization detector. FL - Full load. ft. - feet. g - gram(s). gal. - U.S. gallon(s). GVW - Gross vehicle weight. GVWR - Gross vehicle weight rating. h - hour(s). H2O - water. HC - hydrocarbon(s). HFID - Heated flame ionization detector. Hg - mercury. hi - high. hp. - horsepower. IBP - Initial boiling point. ID - Internal diameter. in. - inch(es). K - kelvin. kg - kilogram(s). km - kilometer(s). kPa - kilopascal(s). lb. - pound(s). lb.-ft. - pound-feet. m - meter(s). max. - maximum. mg - milligram(s). mi. - mile(s). min. - minute(s). ml - milliliter(s). mm - millimeter(s). mph - miles per hour. mv - millivolt(s). N2 - nitrogen. NDIR - Nondispersive infrared. NO - nitric oxide. NO2 - nitrogen dioxide. N2O nitrous oxide. NOX - oxides of nitrogen. No. - Number. O2 - oxygen. Pb - lead. pct. - percent. PDP-CVS - Positive displacement pump - constant volume sampler. ppm - parts per million by volume. ppm C - parts per million, carbon. psi - pounds per square inch. psig - pounds per square inch gauge. PTA - Part throttle acceleration. PTD - Part throttle deceleration. R - Rankin. rpm - revolutions per minute. RVP - Reid vapor pressure. s - second(s). SAE - Society of Automotive Engineers. SI - International system of units. sp. - speed. TEL - Tetraethyl lead. TML - Tetramethyl lead. UDDS - Urban dynamometer driving schedule. V - volt(s). vs - versus. W - watt(s). WF - Weighting factor. WOT - Wide open throttle. wt. - weight. ′ - feet. ″ - inch(es). ° - degree(s). ∑ - summation. [42 FR 32907, June 28, 1977, as amended at 45 FR 4149, Jan. 21, 1980; 74 FR 56373, Oct. 30, 2009]

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