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  2. Cylinder head porting - Wikipedia

    en.wikipedia.org/wiki/Cylinder_head_porting

    The graph above shows the intake runner pressure over 720 crank degrees of an engine with a 7-inch (180 mm) intake port/runner running at 4500 rpm, which is its torque peak (close to maximum cylinder filling and BMEP for this engine). The two pressure traces are taken from the valve end (blue) and the runner entrance (red).

  3. Engineered Propulsion Systems Graflight V-8 - Wikipedia

    en.wikipedia.org/wiki/Engineered_Propulsion...

    EPS set out to certify a new-design flat 8 engine, to replace existing 320–420 hp (240–310 kW) general aviation gasoline engines, with the aim of reducing fuel costs by 45%. [7] EPS started work on the design in 2006, a process that took five years. [ 3 ]

  4. Edelbrock - Wikipedia

    en.wikipedia.org/wiki/Edelbrock

    Edelbrock has two facilities in North Carolina: the Edelbrock Carburetor Division in Sanford, and the Edelbrock Race Center in Mooresville. Vic Edelbrock founded the corporation in 1938 when his desire to increase the performance of his 1932 Ford Roadster led him to design a new intake manifold, [3] friends and fellow drivers soon wanted one as ...

  5. Multi-valve - Wikipedia

    en.wikipedia.org/wiki/Multi-valve

    A cylinder head of a four valve Nissan VQ engine engine. A multi-valve or multivalve engine is one where each cylinder has more than two valves (an intake, and an exhaust).A multi-valve engine has better breathing, and with more smaller valves (having less mass in motion) may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.

  6. Velocity stack - Wikipedia

    en.wikipedia.org/wiki/Velocity_stack

    Short velocity stacks on a 302 cu.in. Ford FE engine in the tight confines of a Ford GT-40. A velocity stack, trumpet, or air horn [1] is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system to smooth high speed airflow, and allow engine intake track tuning to incorporate pressure pulses created by its internal ...

  7. Two-stroke power valve system - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_power_valve_system

    A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...

  8. Crossflow cylinder head - Wikipedia

    en.wikipedia.org/wiki/Crossflow_cylinder_head

    A crossflow head gives better performance than a Reverse-flow cylinder head (though not as good as a uniflow), but the popular explanation put forward for this — that the gases do not have to change direction and hence are moved into and out of the cylinder more efficiently — is a simplification since there is no continuous flow because of valve opening and closing.

  9. Jet engine performance - Wikipedia

    en.wikipedia.org/wiki/Jet_engine_performance

    The engine performance deteriorates with use as parts wear, meaning the engine has to use more fuel to get the required thrust. A new engine starts with a reserve of performance which is gradually eroded. The reserve is known as its temperature margin and is seen by a pilot as the EGT margin. For a new CFM International CFM56-3 the margin is 53 ...

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