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  2. On-board diagnostics - Wikipedia

    en.wikipedia.org/wiki/On-board_diagnostics

    Even more advanced devices allow users to reset engine DTC codes, effectively turning off engine lights in the dashboard; however, resetting the codes does not address the underlying issues and can in worst-case scenarios even lead to engine breakage where the source issue is serious and left unattended for long periods.

  3. OBD-II PIDs - Wikipedia

    en.wikipedia.org/wiki/OBD-II_PIDs

    OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.

  4. Check engine light - Wikipedia

    en.wikipedia.org/wiki/Check_engine_light

    A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).

  5. Bypass ratio - Wikipedia

    en.wikipedia.org/wiki/Bypass_ratio

    The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. [1] A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for every 1 kg of air passing through the core.

  6. Category:Medium-bypass turbofan engines - Wikipedia

    en.wikipedia.org/wiki/Category:Medium-bypass...

    Turbofan engines with a bypass ratio of between 2 and 4. Pages in category "Medium-bypass turbofan engines" The following 17 pages are in this category, out of 17 total.

  7. Allison TF41 - Wikipedia

    en.wikipedia.org/wiki/Allison_TF41

    The TF41 was jointly developed by Allison Engine Company and Rolls-Royce from the latter's RB.168-25R Spey. [1] Allison manufactured the TF41 under license, while Rolls-Royce supplied parts common to existing Speys. [2]

  8. Aviadvigatel PD-14 - Wikipedia

    en.wikipedia.org/wiki/Aviadvigatel_PD-14

    The two-shaft turbofan has a high-pressure core from the PS-12 with an eight-stage compressor and a two-stage turbine, and four low-pressure stages. The high-bypass engine does not employ an exhaust mixer, fuel burn should be reduced by 10–15% from the CFM International CFM56 and it could power an upgraded Tupolev Tu-204. [citation needed]

  9. Pratt & Whitney F100 - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney_F100

    The Pratt & Whitney F100 (company designation JTF22 [1]) is a low bypass afterburning turbofan engine. It was designed and manufactured by Pratt & Whitney to power the U.S. Air Force's "FX" initiative in 1965, which became the F-15 Eagle.

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