DENSO EUROPE TECHNICAL TRAINING
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DENSO EUROPE TECHNICAL TRAINING. HP3 Supply Pump. Supply pump. Plungers. Feed pump. Delivery valve. SCV (Suction Control Valve). Common rail. Common rail pressure sensor. Pressure discharge valve. Pressure limiter. Injector. Engine ECU. EDU. Various sensors. Fuel filter. Fuel tank.

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Presentation Transcript

Denso europe technical training

Supply pump

Plungers

Feed pump

Delivery valve

SCV (Suction Control Valve)

Common rail

Common rail pressure sensor

Pressure discharge valve

Pressure 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 technical training

Outer rotor

Inner rotor

Suction port

Discharge port

Feed Pump HP3 (Trochoid type)


Denso europe technical training

Bushing

Piston

Spring

Plug

Feed pump

SCV

Pump housing

Regulating Valve (HP3 Supply pump)


Denso europe technical training

Feed pump

Regulator valve

SCV

When SCV opening is small

When SCV opening is large

Suction Control Valve (HP3 Supply pump)


Denso europe technical training

Eccentric cam

Ring cam

Plunger

Drive shaft

HP3 Pump body Construction


Denso europe technical training

Element

Check ball

Spring

Holder

Plunger

Construction & Operation of Delivery Valve



Denso europe technical training

: 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

Pressure Discharge Valve Common Rail HP3


Denso europe technical training

DENSO EUROPE TECHNICAL TRAINING

HP3 Supply Pump

Inspection Procedure






Denso europe technical training

DST-1 Test procedure HP3

Always input off set data first( From ETSI Website!)

Same as HP2.


Denso europe technical training

DST-1 Test procedure HP3

Always reduce the fuel pressure before stopping the pump!! If not HP3 can be damaged.


Denso europe technical training

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 technical training

BEDANKT Toyota Hiace/Hilux)

  • ENDE

DOMO ARIGATO

FIN

THANKS

THE END

DANKE

MOLTE GRAZIE

  • EINDE