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  2. Antiknock agent - Wikipedia

    en.wikipedia.org/wiki/Antiknock_agent

    In 1995, leaded fuel accounted for only 0.6% of total gasoline sales and less than 2,000 tons of lead per year. From January 1, 1996, the Clean Air Act banned the sale of leaded fuel for use in on-road vehicles in the United States. Possession and use of leaded gasoline in a regular on-road vehicle now carries a maximum US$10,000 fine in the ...

  3. Defeat device - Wikipedia

    en.wikipedia.org/wiki/Defeat_device

    1995 Cadillac Seville disengaged emissions controls whenever heat or air conditioning was on. In 1995, General Motors was ordered to recall 470,000 model year 1991 through 1995 Cadillacs and pay an $11 million fine for programming the car's electronic control unit (ECU) to enrich the fuel mixture any time the car's air conditioning or cabin heat was operating, since the EPA tests are conducted ...

  4. Diesel particulate filter - Wikipedia

    en.wikipedia.org/wiki/Diesel_particulate_filter

    Diesel particulate filter of a school bus A diesel particulate filter (top left) in a Peugeot Off-road – DPF installation. A diesel particulate filter (DPF) is a device designed to remove diesel particulate matter [broken anchor] or soot from the exhaust gas of a diesel engine. [1] [2]

  5. Diesel exhaust fluid - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust_fluid

    Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue [3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water .

  6. Hydrodesulfurization - Wikipedia

    en.wikipedia.org/wiki/Hydrodesulfurization

    Hydrodesulfurization or hydrodesulphurisation (Commonwealth English; see spelling differences) (HDS), also called hydrotreatment or hydrotreating, is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils.

  7. Engine knocking - Wikipedia

    en.wikipedia.org/wiki/Engine_knocking

    Modern knock control-loop systems are able to adjust ignition timings for every cylinder individually. Depending on the specific engine the boost pressure is regulated simultaneously. This way performance is kept at its optimum while mostly eliminating the risk of engine damage caused by knock (e.g. when running on low octane fuel). [5]

  8. Pressure builds to eliminate fossil fuel use as oil executive ...

    www.aol.com/news/pressure-builds-eliminate...

    Pressure builds to eliminate fossil fuel use as oil executive, under fire, takes over climate talks. SETH BORENSTEIN. November 30, 2023 at 8:33 AM. ... Up to 60% off must-have brands. AOL.

  9. Diesel exhaust - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust

    British Rail Class 55 Deltic diesel locomotive with their characteristic dense exhaust when starting a train. Diesel exhaust is the exhaust gas produced by a diesel engine, plus any contained particulates. Its composition may vary with the fuel type, rate of consumption or speed of engine operation (e.g., idling or at speed or under load), and ...