Acronym Definitions

Acronym Definitions

ALVW - Adjusted Loaded Vehicle Weight, (Curb Weight + GVWR) /2.
Averaging Bank/Trade-Used for Nox Credits on Heavy Duty Trucks Only.
BBL - Barrel.
CALIFORNIA ARB - California Air Resource Board.
CARB - California Air Resource Board.
CARB LEV - Low Emission Vehicle.
CARB TLEV - Transitional Low Emission Vehicle.
CARB ULEV - Ultra Low Emission Vehicle.
CARB ZEV - Zero Emission Vehicle.
CPI - Central Port Injection.
CI - Cylinder Injection.
CNG - Compressed Natural Gas.
EPA - Environmental.
EVAP - Evaporative Emissions.
GVW - Gross Vehicle Weight.
GVWR - Gross Vehicle Weight Rating, Curb weight plus payload.
HHDE - Heavy Heavy Duty Engine.
HHDDE - Heavy Heavy Duty Diesel Engine.
MHDE - Medium Heavy Duty Diesel Engine.
MPI - Multi Port Injection.
LDDT - Light Duty Diesel Truck categories.
LDT - Light Duty Truck (gasoline) categories based on weight as defined in the table.
LDV - Light Duty Vehicle, generally passenger cars and light trucks under 6000 pounds GVWR.
LHDE - Light Heavy Duty Engine (several weight categories).
LVW - Loaded Vehicle Weight, curb weight plus 300 pounds.
MDT - Medium Duty Truck categories based on weight as defined in the table.
MDV - Medium Duty Vehicle.
MHDE - Medium Heavy Duty Engine.
MY - Model Year.
NCP - Non Compliance Penalty.
OBD - On-Board Diagnostic.
ORVR - On-Board Refueling Vapor Recovery.
PC - Passenger Car.
SI - Sequential Injection.
SULEV - Super Ultra Low Emission Vehicle.
Tier 0 - California and Federal regulations effective prior to Tier 1 phase in dates.
Tier 1 - California regulations beginning in 1993 model year and Federal regulations beginning in 1994 model year.
TBI - Throttle Body Injection.
LEV - Low Emission Vehicle.
ZEV - Zero Emission Vehicle.
ULEV - Ultra Low Emission Vehicle.
ILEV - Inherently Low Emission Vehicle.