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  2. Catalytic converter - Wikipedia

    en.wikipedia.org/wiki/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. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including lean-burn engines, and ...

  3. 2020–2022 catalytic converter theft ring - Wikipedia

    en.wikipedia.org/wiki/2020–2022_catalytic...

    2020–2022 catalytic converter theft ring. From 2020 to 2022, an organized criminal group stole and then resold catalytic converters through the United States. The interstate ring is believed to have generated $545 million, with the majority earned through the DG Auto Parts corporation.

  4. Secondary air injection - Wikipedia

    en.wikipedia.org/wiki/Secondary_air_injection

    During engine idle, brief but periodic negative pressure pulses in the exhaust system draw air through the aspirator valve and into the exhaust stream at the catalytic converter. This system, marketed as Pulse Air, was used by American Motors, Chrysler, and other manufacturers beginning in the 1970s. The aspirator provided advantages in cost ...

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    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  6. Catalyst poisoning - Wikipedia

    en.wikipedia.org/wiki/Catalyst_poisoning

    Catalyst poisoning is the partial or total deactivation of a catalyst by a chemical compound. Poisoning refers specifically to chemical deactivation, rather than other mechanisms of catalyst degradation such as thermal decomposition or physical damage. [1] [2] Although usually undesirable, poisoning may be helpful when it results in improved ...

  7. Lean-burn - Wikipedia

    en.wikipedia.org/wiki/Lean-burn

    The main drawback of lean-burning is that a complex catalytic converter system is required to reduce NOx emissions. Lean-burn engines do not work well with modern 3-way catalytic converter —which require a pollutant balance at the exhaust port so they can carry out oxidation and reduction reactions—so most modern engines tend to cruise and ...

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