Operation Section
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37
Pump Unit (Eccentric Cam, Ring Cam, Plunger)
• The eccentric cam is attached to the camshaft and the ring cam is installed on the eccentric cam. There are two plung-
ers at positions symmetrical above and below the ring cam.
• Because the rotation of the camshaft makes the eccentric cam rotate eccentrically, the ring cam follows this and
moves up and down, and this moves the two plungers reciprocally. (The ring cam itself does not rotate.)
Plunger A
Ring Cam
Feed Pump
Plunger B
Camshaft
Eccentric Cam
Q000845E
Q000846E
Ring Cam
Eccentric Cam
Camshaft
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