| 21. | The hydraulic pressure changed according to engine speed and intake pressure.
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| 22. | Friction is only used to engage the lift fan at low engine speeds.
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| 23. | Engine speed is low but the butterfly valve is fully open.
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| 24. | Instead, they keep excellent records of engine speed and airframe vibration.
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| 25. | A stall, and improved car performance when engine speeds were below ~ 2000 rpm.
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| 26. | Engine speed is constant, with a hydraulic transmission modifying speed.
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| 27. | Poor volumetric efficiency at higher engine speeds also requires increased advancement of ignition timing.
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| 28. | To meet that goal, increasing engine speed seemed to be the most attractive solution.
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| 29. | As the throttle is opened, the engine speed increases rapidly.
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| 30. | The supply of this oil is controlled by the throttle position and engine speed.
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