Vehicle Emission Control Information (VECI) Acronym Definitions

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CAC: Charge Air Cooler

CARB: California Air Resource Board

CARB LEV: Low Emission Vehicle

CARB SULEV: Super Ultra Low Emission Vehicle

CARB TLEV: Transitional Low Emission Vehicle

CARB ULEV: Ultra Low Emission Vehicle

CARB ZEV: Zero Emission Vehicle

CI: Cylinder Injection

DGI: Direct Gas Injection

EPA: Environmental Protection Agency

EVAP: Evaporative Emission

GVW: Gross Vehicle Weight

GVWR: Gross Vehicle Weight Rating, curb weight plus payload.

HHDDE: Heavy Heavy Duty Diesel Engine

HHDE: Heavy Heavy Duty Engine

HO2S: Heated Oxygen Sensor

ILEV: Inherently Low Emission Vehicle

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 2, 721.55 Kg (6, 000 lb) GVWR.

LEV: Low Emission Vehicle

LEV-II: California regulations beginning in the 2004 model year.

LHDE: Light Heavy Duty Engine (several weight categories).

LVW: Loaded Vehicle Weight, curb weight plus 136.08 Kg (300 lb).

MDPV: Medium Duty Passenger Vehicle

MDT: Medium Duty Truck categories based on weight as defined in the table.

MDV: Medium Duty Vehicle

MHDDE: Medium Heavy Duty Diesel Engine

MHDE: Medium Heavy Duty Engine

MPI: Multi-Port Injection

MY: Model Year

NCP: Non-Compliance Penalty

OBD: On Board Diagnostics

ORVR: On Board Refueling Vapor Recovery

PC: Passenger Car

PZEV: Partial Zero Emission Vehicle

SFI: Sequential Multiport Fuel Injection

SI: Sequential Injection

SULEV: Super Ultra Low Emission Vehicle

TC: Turbocharged

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.

Tier 2: Federal regulations beginning in the 2004 model year.

TWC: Three-Way Catalytic Converter

ULEV: Ultra Low Emission Vehicle

ZEV: Zero Emission Vehicle