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  2. 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 ...

  3. 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.

  4. Nissan Altima - Wikipedia

    en.wikipedia.org/wiki/Nissan_Altima

    The 2002 2.5L Altimas had major excessive oil consumption issues causing potential catastrophic engine failures. Some cases were because of owner neglect and other cases involving the catalytic converter failing, forcing foreign objects back into the exhaust manifold. Most reports were received after the vehicle is beyond 100,000 miles and more ...

  5. Catalytic converter theft is a huge problem. Will legislation ...

    www.aol.com/news/catalytic-converter-theft-huge...

    Catalytic converters, affixed underneath cars, are used to convert toxic exhaust from an engine into less harmful gas.But their components include precious metals such as platinum, palladium or ...

  6. NOx adsorber - Wikipedia

    en.wikipedia.org/wiki/NOx_adsorber

    The NO x adsorber was designed to avoid the problems that EGR and SCR experienced. An adsorbent such as zeolite traps the NO and NO 2 molecules — acting as a molecular sponge. Once the trap is full (like a sponge full of water) no more NO x can be absorbed. Various schemes have been designed to "purge" or "regenerate" the trap.

  7. 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.

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