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  2. Antilag system - Wikipedia

    en.wikipedia.org/wiki/Antilag_system

    The anti-lag system (ALS) is a method of reducing turbo lag or effective compression used on turbocharged engines to minimize turbo lag on racing or performance cars. It works by retarding the ignition timing and adding extra fuel (and sometimes air) to balance an inherent loss in combustion efficiency with increased pressure at the charging side of the turbo.

  3. Ignition timing - Wikipedia

    en.wikipedia.org/wiki/Ignition_timing

    Pressure in cylinder pattern in dependence on ignition timing: (a) - misfire, (b) too soon, (c) optimal, (d) too late. In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke.

  4. Turbo timer - Wikipedia

    en.wikipedia.org/wiki/Turbo_timer

    Turbo timers can usually be disabled by an external switch, this is normally done using the handbrake switch, or using an automatic one. After a period of driving when a turbocharger has been working hard, it is important to let the engine run at idle speed for a period, allowing the compressor assembly to cool from the lower gas temperatures ...

  5. Contact breaker - Wikipedia

    en.wikipedia.org/wiki/Contact_breaker

    The switch is automatically operated by a cam driven by the engine. The timing of operation of the switch is set so that a spark is produced at the right time to ignite the compressed air/fuel mixture in the cylinder of the engine. A mechanism may be provided to slightly adjust timing to allow for varying load on the engine.

  6. Motronic - Wikipedia

    en.wikipedia.org/wiki/Motronic

    The M2.3.2 system was made for Audi's turbo 20V 5-cylinder engines mainly, but a variant was also used on the Audi 32V 3.6L V8 and a few Audi 32V 4.2 V8 engines. The turbo 5 cylinder version was the first time knock and boost control had been introduced in one ECU, though the ECU was really two computers in one package.

  7. Timing mark - Wikipedia

    en.wikipedia.org/wiki/Timing_mark

    A timing mark is an indicator used for setting the timing of the ignition system of an engine, typically found on the crankshaft pulley (as pictured) or the flywheel. [1] These have the largest radius rotating at crankshaft speed and therefore are the place where marks at one degree intervals will be farthest apart.

  8. Crankshaft position sensor - Wikipedia

    en.wikipedia.org/wiki/Crankshaft_position_sensor

    This sensor is one of the two most important sensors in modern-day engines, together with the camshaft position sensor. As the fuel injection (diesel engines) or spark ignition (petrol engines) is usually timed from the crank sensor position signal, failing sensor will cause an engine not to start or will cut out while running.

  9. Aircraft engine starting - Wikipedia

    en.wikipedia.org/wiki/Aircraft_engine_starting

    Sufficient airspeed is used to 'windmill' the compressor then fuel and ignition are switched on, an on-board auxiliary power unit may be used at high altitudes where the air density is lower. [ 16 ] During zoom climb operations of the Lockheed NF-104A the jet engine was shut down on climbing through 85,000 ft (26,000 m) and was started using ...

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