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Denso Services Templates A1.indd 3 3/23/09 11:59:52 AM
DE00400064E © 2010 DEN
SO Europe B.V. All rights reserved. Printed in Belgium
. DEDS09-UK01
SUCTION CONTROL VALVE (SCV)RING CAM
CAM SHAFT
SUCTION VALVE DELIVERY VALVE
ECCENTRIC CAM
TO RAIL
RING CAM
PLUNGER A
PLUNGER B
RING CAM RING CAM
ECCENTRIC CAM ECCENTRIC CAM
PLUNGER
PLUNGERCAM SHAFT CAM SHAFT
SCV
FUEL
ECCENTRIC CAM
PLUNGER
DELIVERY VALVE
SUCTION VALVE
COMMON RAIL HP3/HP4 TYPE SUPPLY PUMP
PUMPING OPERATION
PUMPING PART
PLUNGER A: FINISH COMPRESSIONPLUNGER B: FINISH INTAKE
NOTE:THE NUMBER OF PLUNGERS DIFFERS FOR THE HP3 AND HP4 PUMPS.HOWEVER THE BASIC CONSTRUCTION OF BOTH PUMPS IS THE SAME.
HP4 TYPEHP3 TYPE