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  2. Secondary air injection - Wikipedia

    en.wikipedia.org/wiki/Secondary_air_injection

    The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system. Air is delivered under light pressure to the injection point(s). A check valve prevents exhaust forcing its way back through the air injection system, which would damage the pump and other components.

  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. W8 engine - Wikipedia

    en.wikipedia.org/wiki/W8_engine

    vacuum-operated secondary air injection pump for direct injection into exhaust ports to assist cold start operation, one cast iron exhaust manifold per cylinder bank with integrated ceramic catalytic converter per cylinder bank, four heated oxygen sensors monitoring pre- and post catalyst exhaust gasses, EU4 compliant

  5. Jet engine performance - Wikipedia

    en.wikipedia.org/wiki/Jet_engine_performance

    The relevance for gas turbine-powered aircraft is the use of a secondary jet of air with a propeller or, for jet engine performance, the introduction of the bypass engine. The overall efficiency of the jet engine is thermal efficiency multiplied by propulsive efficiency ( η o = η t h η p r {\displaystyle \eta _{o}=\eta _{th}\eta _{pr}} ).

  6. General Motors 122 engine - Wikipedia

    en.wikipedia.org/wiki/General_Motors_122_engine

    This engine is equipped with secondary air injection, and is flex-fuel capable. It is entirely different from the Iron Duke, and was the last North American iteration of the GM 122 engine. The 2200 uses an iron block and aluminum two-valve cylinder head. Output is 120 hp (89 kW) at 5000 rpm and 140 lb⋅ft (190 N⋅m) at 3600 rpm.

  7. Volkswagen-Audi V8 engine - Wikipedia

    en.wikipedia.org/wiki/Volkswagen-Audi_V8_engine

    common rail (CR) direct diesel injection: electric low-pressure fuel lift pump, one timing belt-driven 1,600 bar (23,210 psi) injection pump, two common rail fuel rails (one per cylinder bank), piezo-electric operated fuel injectors with eight-hole nozzles for homogenous fuel delivery, single and double pilot injection, up to four main ...

  8. Carburetor - Wikipedia

    en.wikipedia.org/wiki/Carburetor

    Therefore, an accelerator pump is often used to briefly provide extra fuel as the throttle is opened. [12] When the driver presses the throttle pedal, a small piston or diaphragm pump injects extra fuel directly into the carburetor throat. [13] The accelerator pump can also be used to "prime" an engine with extra fuel prior to attempting a cold ...

  9. General Motors 54° V6 engine - Wikipedia

    en.wikipedia.org/wiki/General_Motors_54°_V6_engine

    The X25XE also benefitted from a higher-volume oil pump. Firing order is 1-2-3-4-5-6. The breakdown of the engine name [1] is as follows: X – Exhaust emissions level: 94/12/EC, stage 2; 25 – Displacement: 2.5 litres; X – Compression ratio: 10.0–11.5:1; E – Mixture system: Injection; Applications: Holden VS Commodore (export only) 1993 ...

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