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Common Rail Injector
Common Rail Injectors
• First Generation Injectors– Solenoid Type
• Bosch• Denso
First Generation InjectorsBasic principle Denso
First Generation InjectorsTimeline
First Generation InjectorsX2
Specifications:-135MPa-Pilot Injections
Compensation:-Non-Resistance
First Generation Injectors
Common Rail Injectors
• Second Generation Injectors– Solenoid Type– ECU Coding
• Delphi Diesel • Denso • Bosch
Second Generation InjectorsG2
Specifications:-180MPa-Multiple Injections
Compensation:-Non-Resistance-QR Code
Denso
Specification
•1600bar•Multiple Injection•16 digit alphanumeric C2i code
Second Generation Injectors
Second Generation Injectors
Common Rail Injectors
• Third Generation Injectors– Piezo Crystal
• Delphi Diesel• Denso• Siemens• Bosch
BasicSpecs:
-In the cylinder head180 MPa
Number of injection holes:
Type:Piëzo
Number of injections:5
10
Piezo Injector
Piezo InjectorPiezo elements
Electrode
Piezoelectric Element
Laminated
Construction
Piezoelectric Element
Piezo Injector
3 Way Valve
Piezo Stack
Hydraulic Movement Structure
Needle Back Pressure( Operation Room
Working principle
Piezo injectorWorking
principle