Low Speed Hunting of Pneumatically Governed Compression-Ignition Engine : 2nd Report, Stability Criticism of the Closed Engine-Governor Loop Based on Measured Frequency Responses of the Two Open Systems Composing the Loop

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The author showed in the previous report that the key factor must be the phase lag of the governing pressure taken at a narrow passage called subventuri beside a throttle valve, because the hunting disappears when the phase lag is minimized by displacing the pressure source to the common intake duct just down the throttle valve and the subventuri. In the present work, he experimentally determines the frequency response of the engine system and the one of the pneumatic governor system composing a closed loop, in order to verify the existence of hunting under the subventuri pressure control and its non-existence under the suction pressure control.

Journal

  • Bulletin of JSME

    Bulletin of JSME 28 (244), 2365-2369, 1985

    The Japan Society of Mechanical Engineers

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