Acronyms and Abbreviations QSC8.3 and QSL9 Page i-8 Section i - Introduction DOC Diesel Oxidation Catalyst DPF Diesel Particulate Filter ECM Engine Control Module EFC Electronic Fuel Control EGR Exhaust Gas Recirculation EPA Environmental Protection Agency °F Fahrenheit ft-lb Foot-Pound Force FMI Failure Mode Indentifier GVW Gross Vehicle Weight Hg Mercury hp Horsepower H O 2 Water inHg Inches of Mercury in H 0 2 Inches of Water ICM Ignition Control Module IEC International Electrotechnical Commission km/l Kilometers per Liter kPa Kilopascal LNG Liquid Natural Gas LPG Liquified Petroleum Gas