§ 91.4 - Acronyms and abbreviations.

§ 91.4 Acronyms and abbreviations.

The following acronyms and abbreviations apply to this part 91.

AECD - Auxiliary emission control device

ASME - American Society of Mechanical Engineers

ASTM - American Society for Testing and Materials

CAA - Clean Air Act

CAAA - Clean Air Act Amendments of 1990

CLD - chemiluminescent detector

CO - Carbon monoxide

CO₂ - Carbon dioxide

EPA - Environmental Protection Agency

FEL - Family Emission Limit

g/kw-hr - grams per kilowatt hour

HC - hydrocarbons

HCLD - heated chemiluminescent detector

HFID - heated flame ionization detector

ICI - Independent Commercial Importer

MY - Model Year

NDIR - non-dispersive infrared analyzer

NIST - National Institute for Standards and Testing

NO - Nitric oxide

NO₂ - Nitrogen dioxide

NO_X - Oxides of nitrogen

OB - Outboard engine

O₂ - Oxygen

OEM - Original engine manufacturer

PMD - paramagnetic detector

PWC - personal watercraft

RPM - revolutions per minute

SAE - Society of Automotive Engineers

SEA - Selective Enforcement Auditing

SI - Spark-ignition

U.S.C. - United States Code

VOC - Volatile organic compounds

ZROD - zirconium dioxide sensor