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  2. Union Pacific GTELs - Wikipedia

    en.wikipedia.org/wiki/Union_Pacific_GTELs

    The sides of the locomotive had numerous air intake louvers that could be opened and closed in varying patterns. UP 50 was a carbody unit with a B+B-B+B wheel arrangement – four two-axle trucks, with pairs connected by span bolsters. The turbine produced 4,800 hp (3.6 MW), of which 4,500 hp (3.4 MW) was available for traction.

  3. Rolls-Royce LiftSystem - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_LiftSystem

    the rear of the F135 engine (nozzle rotated down) that powers the Rolls-Royce LiftSystem. Instead of using separate lift engines, like the Yakovlev Yak-38, or rotating nozzles for engine bypass air, like the Harrier, the "LiftSystem" has a shaft-driven LiftFan, designed by Lockheed Martin and developed by Rolls-Royce, [3] and a thrust vectoring nozzle for the engine exhaust that provides lift ...

  4. Cold air intake - Wikipedia

    en.wikipedia.org/wiki/Cold_air_intake

    Some strategies used in designing aftermarket cold air intakes are: Reworking parts of the intake that create turbulence to reduce air resistance. [2] Providing a more direct route to the air intake by eliminating muffling devices. Shortening the length of the intake. Placing the intake duct to use the ram-air effect to give positive pressure ...

  5. MultiAir - Wikipedia

    en.wikipedia.org/wiki/MultiAir

    Fiat 875 cc two cylinder TwinAir engine featuring Multiair technology. MultiAir or Multiair is a hydraulically-actuated variable valve timing (VVT) and variable valve lift (VVL) engine technology enabling "cylinder by cylinder, stroke by stroke" [1] control of intake air directly via a gasoline engine's inlet valves.

  6. Intake ramp - Wikipedia

    en.wikipedia.org/wiki/Intake_ramp

    An intake ramp is a rectangular, plate-like device within the air intake of a jet engine, designed to generate a number of shock waves to aid the inlet compression process at supersonic speeds. [1] The ramp sits at an acute angle to deflect the intake air from the longitudinal direction. [ 2 ]

  7. Hood scoop - Wikipedia

    en.wikipedia.org/wiki/Hood_scoop

    A hood scoop (North American English) or bonnet scoop (Commonwealth English), sometimes called bonnet airdam and air dam, is an upraised component on the hood of a motor vehicle that either allows air to directly enter the engine compartment or appears to do so. It has only one opening and is closed on all other sides.

  8. Variable valve lift - Wikipedia

    en.wikipedia.org/wiki/Variable_valve_lift

    Subaru introduced i-Active Valve Lift System (i-AVLS) on the second-generation EJ25 (EJ253) which features two-stage intake lift, however it is only used on one of the two intake valves. second-generation EZ30 uses two stage lift shims, bucket, on all intake valves. For the EZ36D, it was replaced by D-AVCS, dual VVT on the intake/exhaust cams.

  9. Air-start system - Wikipedia

    en.wikipedia.org/wiki/Air-start_system

    Another method of air-starting an internal combustion engine is by using compressed air or gas to drive a fluid motor in place of an electric motor. [3] They can be used to start engines from 5 to 320 liters in size and if more starting power is necessary two or more motors can be used.