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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. [36] [37]

  3. OBD-II PIDs - Wikipedia

    en.wikipedia.org/wiki/OBD-II_PIDs

    3 WWH-OBD Vehicle OBD System Information h 91: 145: 5 WWH-OBD Vehicle OBD System Information h 92: 146: 2 Fuel System Control 93: 147: 3 WWH-OBD Vehicle OBD Counters support h 94: 148: 12 NOx Warning And Inducement System 98: 152: 9 Exhaust Gas Temperature Sensor 99: 153: 9 Exhaust Gas Temperature Sensor 9A: 154: 6 Hybrid/EV Vehicle System Data ...

  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. 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]

  7. Saturn AL-41 - Wikipedia

    en.wikipedia.org/wiki/Saturn_AL-41

    The AL-41 is a designation for two different Russian military turbofan engine variants by NPO Lyulka-Saturn.The original AL-41F, development designation izdeliye 20, was a variable-bypass ratio turbofan engine, designed for supercruise flight for the MFI (Mnogofunktsionalni Frontovoy Istrebitel, "Multifunctional Frontline Fighter") program, which resulted in the Mikoyan Project 1.44.

  8. 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.

  9. Electronic control unit - Wikipedia

    en.wikipedia.org/wiki/Electronic_control_unit

    An ECU from a Geo Storm. An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.