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They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology. Unregulated pollutants also include ozone precursors and bioaccumulative and toxic compounds. L) and medium-duty (6.4 —Chin et al.
The selected projects will focus on reducing the total cost of ownership of NGVs, increasing vehicle efficiency, decreasing local air pollution, and advancing technology development to increase the use of more affordable medium- and heavy-duty natural gas engines and vehicles. Cummins Inc. Plug-in Hybrid CNG Drayage Truck “PHET”.
WHDC (gtr 4) specifies test procedures for compression-ignition (CI) engines and positive-ignition (PI) engines fuelled with natural gas (NG) or liquefied petroleum gas (LPG) with regard to the emission of pollutants.
The US EPA has long had what is referred to as a “ footprint rule, ” which allows larger vehicles to pollute more. These include the Toyota LandCruiser, Ford Everest, Isuzu MUX, Nissan Patrol and Mitsubishi Pajero Sport – all mid- or full-size SUVs. If that sounds familiar, it’s because it is.
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