Vehicle Emissions

Harmful pollutants to the health and the environment include particulates, hydrocarbons, carbon dioxide, carbon monoxide, ozone, lead, and various oxides of nitrogen.

AT-PZEV (Advanced Technology Partial Zero Emission Vehicles)

Vehicles that meet California Air Resources Board's requirements for SULEV exhaust emissions, zero fuel evaporative emissions, 150,000-mile emissions durability and an extended emission systems warranty, are referred to as AT-PZEVs.

Bin

A set of emissions standards under the new U.S. Tier 2 emissions program. The lower the bin number, the lower the vehicle’s tailpipe emissions.

CAFE (Corporate Average Fuel Economy)

A U.S. regulation requiring auto companies to meet certain sales weighted average fuel economy levels for passenger cars and light trucks and report these numbers annually.

ILEV (Inherently Low Emission Vehicle)

Any vehicle that is certified to meet transitional low-emission vehicle standards established by the California Air Resources Board (CARB) and does not emit any evaporative emissions.

LEV (Low Emission Vehicle)

A level of standards for tailpipe emissions (hydrocarbon, carbon monoxide and oxides of nitrogen) enforced in California and states that have adopted California standards. An LEV II vehicle meets the same tailpipe standards as a federal Tier 2 bin 5 vehicle.

LEV Program

The unique vehicle emissions program adopted by California for the control of tailpipe and evaporative emissions that provides several sets of emissions standards (LEV, ULEV, etc.). The LEV II Program starts with the 2004 model year and offers approximately the same air quality benefit as the new federal Tier 2 program.

PZEV (Partial Zero Emission Vehicle)

A vehicle standard that is part of the LEV II Program. A vehicle that meets SULEV tailpipe emissions and has zero fuel evaporative emissions.

SULEV (Super Ultra-Low Emission Vehicle)

A level of standards for tailpipe emissions (hydrocarbon, carbon monoxide and oxides of nitrogen) enforced in California and states that have adopted California standards. A SULEV II vehicle meets the same smog-forming tailpipe emissions standards as a federal Tier 2 bin 2 vehicle.

TLEV (Transitional Low Emission Vehicle)

A vehicle that is certified to meet the TLEV emission standards established by the California Air Resources Board (CARB). The TLEV standards are less stringent than the LEV standards.

ZEV (Zero Emission Vehicle)

The lowest level of standards for vehicle emissions (zero emissions) enforced in California and states that have adopted California standards. A federal Tier 2 bin 1 vehicle is also a "zero emission vehicle."

See also: California Air Resources Board, Carbon Dioxide, Carbon Monoxide, Corporate Average Fuel Economy, Emissions, Fuel Economy Drive Cycle, Polynuclear Aromatic Hydrocarbons, White Smoke.

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Subjects: Automotive Transport


Weblinks:
Cylces and Standards - DieselNet.com Emissions test cycles including data.
US Environmental Protection Agency Dynamometer Driver′s Aid
Driving the Nation Vehicles, alternative fuels, legislation, politics - US biased.