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  2. Exhaust gas - Wikipedia

    en.wikipedia.org/wiki/Exhaust_gas

    U.S. Environmental Protection Agency estimates of average passenger car emissions in the United States for April 2000 [3] Component Emission Rate Annual pollution emitted Hydrocarbons 2.80 grams/mile (1.75 g/km) 77.1 pounds (35.0 kg) Carbon monoxide 20.9 grams/mile (13.06 g/km) 575 pounds (261 kg) NO x: 1.39 grams/mile (0.87 g/km)

  3. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    Particle Removal is 99.97% down to 0.1 microns, plus this Energy Star-certified device boasts one of the highest Clean Air Delivery Rate (CADR) of 410 for fine smoke particles, dust and pollen ...

  4. Soot - Wikipedia

    en.wikipedia.org/wiki/Soot

    The black staining on the power car of this Midland Mainline InterCity 125 High Speed Train is the result of soot building up on the train's surface. Soot, particularly diesel exhaust pollution, accounts for over one-quarter of the total hazardous pollution in the air. [12] [22]

  5. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    Gaskets and shaft seals were intended to limit the leakage of oil, but they were usually not expected to entirely prevent it. The blow-by gases would diffuse through the oil and then leak through the seals and gaskets into the atmosphere, causing air pollution and odors. The first refinement in crankcase ventilation was the road draught tube.

  6. Air filter - Wikipedia

    en.wikipedia.org/wiki/Air_filter

    A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone. [1]

  7. 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.

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