hp3 supply pump - automotriz en video · hp3 system lay-out denso europe b.v ... ( toyota...
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DENSO EUROPE B.V., 2003
DENSO EUROPE TECHNICAL TRAINING
HP3 Supply Pump
DENSO EUROPE B.V., 2003
Supply pump
Plungers
Feed pump
Delivery valve
SCV (Suction Control Valve)Common rail
Common rail pressure sensorPressure discharge valvePressure limiter
Injector
Engine ECU
EDU
Various sensors
Fuel filter
Fuel tank
Flow of injection fuel
Flow of leak fuel
HP3 System Lay-out
DENSO EUROPE B.V., 2003
Feed Pump HP3 (Trochoid type)
Outer rotor
Inner rotor
Suction port
Discharge port
DENSO EUROPE B.V., 2003
Regulating Valve (HP3 Supply pump)
Bushing
Piston
Spring
Plug
Feed pump
SCV
Pump housing
DENSO EUROPE B.V., 2003
Suction Control Valve (HP3 Supply pump)
Feed pump
Regulator valve
SCV
When SCV opening is small
When SCV opening is large
DENSO EUROPE B.V., 2003
HP3 Pump body Construction
Eccentric cam
Ring cam
Plunger
Drive shaft
DENSO EUROPE B.V., 2003
Element Check ball Spring Holder Plunger
Construction & Operation of Delivery Valve
DENSO EUROPE B.V., 2003
Supply pump Operation HP3
DENSO EUROPE B.V., 2003
Pressure Discharge Valve Common Rail HP3
: from Common rail
: to Fuel tank
Pressure discharge valve
Common rail
Operation when fuel pressure is higher than target injection pressure
Operation when fuel pressure is identical to target injection pressure
DENSO EUROPE B.V., 2003
DENSO EUROPE TECHNICAL TRAINING
HP3 Supply PumpInspection Procedure
DENSO EUROPE B.V., 2003
Fuel line diagram HP3 on Test bench
DENSO EUROPE B.V., 2003
ECD Controller set up HP3 on Test bench
(Only HP2)
DENSO EUROPE B.V., 2003
DST-1 set up HP3
DENSO EUROPE B.V., 2003
DST-1 Test procedure flow HP3
DENSO EUROPE B.V., 2003
DST-1 Test procedure HP3
Always input off set data first( From ETSI Website!)
Same as HP2.
DENSO EUROPE B.V., 2003
DST-1 Test procedure HP3
Always reduce the fuel pressure before stopping the pump!! If not HP3 can be damaged.
DENSO EUROPE B.V., 2003
• At this moment only repairable p/n 294000-001# ( Toyota Hiace/Hilux)
• Always Check ETSI for latest version of Test specifications!
• Always test with safety cover closed.
DST-1 Test procedure flow HP3
DENSO EUROPE B.V., 2003
FIN
ENDE
THE
END
EINDE
THANKS
DANKE
MOLTE GRAZIE
BEDANKT
DOMO
ARIGATO