The governor for an auxiliary diesel engine is shown in the illustration. Which of the pieces listed rotates proportionally to engine speed? See illustration MO-0094.
• Centrifugal governor operation: which part is directly driven by the engine? • Relationship between rotational speed of the governor spindle and movement of the flyweights • Difference between parts that rotate and parts that only slide or pivot to transmit motion to the fuel rack
• Trace the power flow from the engine gear train: which numbered part is the first one that must spin whenever engine speed changes? • Look at the flyweights near label 10. Which numbered piece is the vertical shaft or sleeve that those weights are attached to and therefore must rotate with them? • Which of the numbered parts merely converts motion to move the fuel rack back and forth, instead of spinning at engine speed?
• Identify which piece is coaxial with the flyweights and clearly part of the rotating assembly • Confirm that the parts connected to the fuel rack (3 and the lever system at 1–2) mainly slide or rock, not spin continuously • Make sure the piece you choose would reasonably be gear-driven from the engine, so its rpm always matches engine rpm in fixed proportion
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