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  2. Secondary air injection - Wikipedia

    en.wikipedia.org/wiki/Secondary_air_injection

    When the catalytic converter is cold, air injected at the upstream point burns with the deliberately rich exhaust so as to bring the catalyst up to operating temperature quickly. Once the catalyst is warm, air is injected to the downstream location — the catalytic converter itself — to assist with catalysis of unburned hydrocarbons .

  3. 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 ...

  4. 2020–2022 catalytic converter theft ring - Wikipedia

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

    In 2022, catalytic converter thefts costs victims over $382,000,000. [6] From 2001 to 2021, the price of PRP rose dramatically: platinum rose from $530 per ounce to about $1100 ($912.00 to $1,237, adjusted for inflation). [2] This led to an epidemic of thefts targeting the device for sale to scrap dealers. [4]

  5. Exhaust system - Wikipedia

    en.wikipedia.org/wiki/Exhaust_system

    Exhaust manifold (chrome plated) on a car engine. An exhaust system is used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes. Depending on the overall system design, the exhaust gas may flow through one or ...

  6. Vehicle emissions control - Wikipedia

    en.wikipedia.org/wiki/Vehicle_emissions_control

    The catalytic converter is a device placed in the exhaust pipe, which converts hydrocarbons, carbon monoxide, and NO x into less harmful gases by using a combination of platinum, palladium and rhodium as catalysts. [16] There are two types of catalytic converter, a two-way and a three-way converter.

  7. John J. Mooney - Wikipedia

    en.wikipedia.org/wiki/John_J._Mooney

    Fairleigh Dickinson University. Occupation. Chemical Engineer. Awards. National Medal of Technology (1974), Walter Ahlstrom Prize. John Joseph Mooney (April 6, 1930 – June 16, 2020) was an American chemical engineer who was co-inventor of the three-way catalytic converter, which has helped reduce pollution from cars since the mid-1970s.

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