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  2. 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.

  3. 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.

  4. Automatic Performance Control - Wikipedia

    en.wikipedia.org/wiki/Automatic_Performance_Control

    Saab integrated the APC's boost control functionality with ignition control in 1990 with the introduction of the DI/APC system, available in 9000 models only. The DI/APC system managed knock not only by decreasing boost via a solenoid but by retarding ignition timing as well; DI/APC also managed the engine's basic ignition timing.

  5. Big-bang firing order - Wikipedia

    en.wikipedia.org/wiki/Big-bang_firing_order

    This is achieved by changing the ignition timing, changing or re-timing the camshaft, and sometimes in combination with a change in crankpin angle. The goal is to change the power delivery characteristics of the engine. A regular-firing multi-cylinder engine fires at approximately even intervals, giving a smooth-running engine.

  6. Toyota E engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_E_engine

    Ignition timing (with vacuum advancer off): 10 degrees BTDC; Ignition timing (as per Haynes Databook): 5 degrees BTDC at 800 rpm; Gearbox. 4-speed and 5-speed manual gearbox: C40, C150, C152 (turbo model) Automatic transmission: A132l 3-speed, A242l 4-speed; Applications. AE92, AE111 Toyota Corolla (South Africa)

  7. Twincharger - Wikipedia

    en.wikipedia.org/wiki/Twincharger

    Anti-lag systems work in one of two ways: by running a very rich air–fuel ratio and pumping air into the exhaust to ignite unburnt fuel in the exhaust manifold, or by severely retarding ignition timing to cause combustion to continue well after the exhaust valve has opened. Both methods involve combustion in the exhaust manifold to keep the ...

  8. Motronic - Wikipedia

    en.wikipedia.org/wiki/Motronic

    The V8 version of the ECU was only single processor based while retaining all the same features of the turbo 5-cylinder ECU less the boost control. The 3.6 V8 version had a distributor-based ignition system and was upgraded around the same time to coil on plug as its 20V turbo counterpart in 1992–1993.

  9. Chevrolet Turbo-Air 6 engine - Wikipedia

    en.wikipedia.org/wiki/Chevrolet_Turbo-Air_6_engine

    Static timing advance was set to 24° BTDC, with an additional 12° of centrifugal advance coming in above 4000 rpm. To prevent pre-ignition, a diaphragm on the distributor provided a pressure retard function rather than a vacuum advance, and could retard timing by up to 9° at manifold pressures above 0.14 bar (2.0 psi). [27]

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