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  2. Diesel particulate filter - Wikipedia

    en.wikipedia.org/wiki/Diesel_particulate_filter

    Cordierite Diesel Particulate Filter on GM 7.8 Isuzu. Unlike a catalytic converter which is a flow-through device, a DPF retains bigger exhaust gas particles by forcing the gas to flow through the filter material before exiting; [2] [29] however, the DPF does not retain small particles.

  3. Catalytic converter - Wikipedia

    en.wikipedia.org/wiki/Catalytic_converter

    Catalytic converters remove only 20–40% of PM so particulates are cleaned up by a soot trap or diesel particulate filter (DPF). In the U.S., all on-road light, medium, and heavy-duty diesel-powered vehicles built after 1 January 2007, are subject to diesel particulate emission limits, and so are equipped with a 2-way catalytic converter and a ...

  4. Diesel exhaust fluid - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust_fluid

    Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue [3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water .

  5. Diesel exhaust - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust

    Exposure to diesel exhaust and diesel particulate matter (DPM) is an occupational hazard to truckers, railroad workers, occupants of residential homes in the vicinity of a rail yard, and miners using diesel-powered equipment in underground mines. Adverse health effects have also been observed in the general population at ambient atmospheric ...

  6. Selective catalytic reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_catalytic_reduction

    In 2007, the United States Environmental Protection Agency (EPA) enacted requirements to significantly reduce harmful exhaust emissions. To achieve this standard, Cummins and other diesel engine manufacturers developed an aftertreatment system that includes the use of a diesel particulate filter (DPF). As the DPF does not function with low ...

  7. 1,200 readers told us what they regret about investing for ...

    www.aol.com/1-200-baby-boomers-told-091001825.html

    She left work in 2008 to care for her partner's mother. "The money would come in and out it would go," White said, adding she rarely put money into her 401(k). "I didn't think about the retirement ...

  8. Delta CEO says the Trump administration will reverse ... - AOL

    www.aol.com/delta-ceo-says-trump-administration...

    The chief executive of Delta Air Lines says the incoming Trump administration will be a “breath of fresh air” for airlines after what he calls government “overreach” under President Joe Biden.

  9. In reversal, key House panel votes to release Matt Gaetz ...

    www.aol.com/reversal-key-house-panel-votes...

    The House Ethics Committee secretly voted earlier this month to release its report into the conduct of former Rep. Matt Gaetz before the end of this Congress, according to multiple sources with ...

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