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An ultra-low-emission vehicle (ULEV) is a motor vehicle that emits extremely low levels of motor vehicle emissions compared to other vehicles. In some jurisdictions it is defined in law; low and ultra low emission vehicles may be given tax or other advantages, [1] while high emission vehicles may suffer restrictions or additional taxation.
The SULEV standard is stricter than the standard for LEV (low emission vehicle) and ULEV (ultra-low-emission vehicle), however not as strict as PZEV (partial zero-emissions vehicle) which meets the SULEV standard for tailpipe emissions, but has zero instead of reduced evaporative emissions.
The super-ultra-low-emission vehicle (SULEV) standard is more stringent than the ultra-low-emission vehicle (ULEV) and low-emission vehicle standards. All emissions-related components, including the electric-propulsion parts of hybrid electric vehicles, must be warranted for 15 years or 150,000 miles.
United States vehicle emission standards are set through a combination of legislative mandates enacted by Congress through Clean Air Act (CAA) amendments from 1970 onwards, and executive regulations managed nationally by the Environmental Protection Agency (EPA), and more recently along with the National Highway Traffic Safety Administration (NHTSA).
The Ultra Low Emission Zone (ULEZ) is an area in London, England, where an emissions standard based charge is applied to non-compliant road vehicles. Plans were announced by London Mayor Boris Johnson in 2015 for the zone to come into operation in 2020.
ULEV: Ultra low emission vehicle; V6: Vee-formation six-cylinder; V8: V-formation eight-cylinder; VDC: Variable displacement compressor; VVT: Variable Valve Timing; ZEV: Zero-emission vehicle; 4WD: Four-wheel-drive; 42V ISG: 42-volt integrated starter-generator system
AT-PZEV (Advanced Technology-Partial Zero Emissions Vehicle) is an emissions standard created by the California Air Resources Board. 2005 model year Accord Hybrids were rated LEVII-ULEV by the California Air Resources Board and Tier2, Bin5 by the EPA.
This engine was used in the 1998-2002 Honda Accord ULEV models. It is substantially similar to the F23A1, but features ULEV certification with a slight reduction of power: 148 hp (110 kW) with a maximum torque of 204 N⋅m (150 lb⋅ft). This engine has a different exhaust manifold, a more restrictive intake manifold, and a 32-bit ECU that uses ...