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  2. Catalytic converter - Wikipedia

    en.wikipedia.org/wiki/Catalytic_converter

    A three-way catalytic converter on a gasoline-powered 1996 Dodge Ram Simulation of flow inside a catalytic converter. A catalytic converter is an exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.

  3. California Smog Check Program - Wikipedia

    en.wikipedia.org/wiki/California_Smog_Check_Program

    Automobiles with a motor swap performed prior to the March 19, 1984 mandate which was older than the model year of the vehicle e.g. a 1970 LT-1 350 swapped into a 1975 Chevrolet with the 1970 smog gear intact (with documentation e.g. receipts) are considered noncompliant illegal engine swaps including nonstock exhaust swaps e.g. dual catalytic ...

  4. Catalyst poisoning - Wikipedia

    en.wikipedia.org/wiki/Catalyst_poisoning

    In catalytic converters used on automobiles, the combustion of leaded gasoline produces elemental lead, lead(II) oxide, lead(II) chloride, and lead(II) bromide. Lead alloys with the metals present in the catalyst, while lead oxides and halides coat the catalyst's surfaces, reducing the converter's ability to reduce NOx emissions.

  5. 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.

  6. US Justice Department watchdog faults subpoenas to Congress ...

    www.aol.com/news/justice-department-watchdog...

    WASHINGTON (Reuters) -The U.S. Justice Department's internal watchdog said on Tuesday that prosecutors' decision to subpoena phone and email records from members of Congress and their staff during ...

  7. Selective catalytic reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_catalytic_reduction

    Commercial selective catalytic reduction systems are typically found on large utility boilers, industrial boilers, and municipal solid waste boilers and have been shown to reduce NO x by 70-95%. [1] More recent applications include diesel engines, such as those found on large ships, diesel locomotives, gas turbines, and automobiles.

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