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In the United States, the emission standards for non-road diesel engines are published in the US Code of Federal Regulations, Title 40, Part 89 (40 CFR Part 89). Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp). In 1998 the regulation included engines under 37 kW and introduced ...
Several local authorities in the UK have introduced Euro 4 or Euro 5 emissions standards for taxis and licensed private hire vehicles to operate in their area. [69] [70] [71] Emissions tests on diesel cars have not been carried out during MOTs in Northern Ireland for 12 years, despite being legally required. [72]
Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [27]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.
Secretary of Transportation Sean Duffy ordered an immediate review and reconsideration of all Biden-era fuel standards. ... zero- and low-emission vehicles. The Illinois Environmental Protection ...
1998: Diesel engine standards further increased in efforts to reduce ozone and PM emissions for various vehicles including industrial equipment. 1999: Tailpipe emission standards are finalized, sulfur contents in gasoline are reduced, and various boats/other marine vehicles using diesel had reduced emission limits for NOx and PM. [7]
On September 24, 2004, the California Air Resources Board (CARB) adopted emissions standards for GHGs from new passenger cars, light-duty trucks and medium-duty vehicles. Not unlike the LDV Rule, California's regulations establish standards for CO 2 equivalent emissions from two classes of vehicles on a gram per mile basis. Also like those in ...
The Worldwide Harmonised Light vehicles Test Procedure (WLTP) [1] is a global driving cycle standard for determining the levels of pollutants, CO 2 emission standards and fuel consumption of conventional internal combustion engine (ICE) and hybrid automobiles, as well as the all-electric range of plug-in electric vehicles.
While diesel fuel contains slightly more carbon (2.68 kg CO 2 /litre) than petrol (2.31 kg CO 2 /litre), overall, the CO 2 emissions of a diesel car tend to be lower due to higher efficiency. In use, on average, this equates to around 200 g CO 2 /km for petrol and 120 g CO 2 /km for diesel.