1,9 ltr-TDI-Industrial Engine - Volkswagen Technical Site

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System overview To optimise engine performance with respect to torque delivery, consumption and emission in every operating situation, the EDC control unit refers to 25 maps and characteristic curves. Sensors supply the control unit with information regarding the vehicle's momentary operating state. Sensors Needle lift sender G80 <strong>Engine</strong> speed sender G28 Intake manifold pressure sender EDC control unit J248 Air-mass flow meter G70 Coolant temperature sender G62 Intake manifold temperature sensor G72 Clutch pedal switch F36 Brake switch F Brake pedal switch F47 Accelerator position sender G79 Diagnostic connector Modulating piston movement sensor G149 Fuel temperature sender G81 Auxiliary signals 10 Note: The self-diagnosis monitors all the components above.
After the information supplied by the sensors has been evaluated, the control unit sends signaIs to the final control elements (actuators). Injection quantity, commencement of injection, charge pressure and exhaust gas recirculation are monitored and regulated in this way. The EDC control unit also assumes the tasks of controlling the glow plug system, the auxiliary heater and the cruise control system. Actuators Glow plug warning lamp Fault warning lamp K29 Exhaust gas recirculation valve N18 Solenoid valve for charge pressure control N75 quantity adjuster N146 Fuel cut off valve N109 Commencement of injection valve N108 Auxiliary signals SSP 153/11 11
Page 1 and 2: 1,9 ltr-TDI-Industrial Engine Techn
Page 3 and 4: Combustion process In the direct in
Page 5 and 6: Needle Lift Sender The injector of
Page 7 and 8: Modulating Piston Movement Sender M
Page 9: ntrol unit J248 Intake manifold tem
Page 13 and 14: Main influencing factors SSP 153/13
Page 15 and 16: Secondary influencing factors ( as
Page 17 and 18: Injection commencement control The
Page 19 and 20: TDC signal and engine speed determi
Page 21 and 22: EDC control unit From the incoming
Page 23 and 24: Fuel regulation Function Air mass F
Page 25 and 26: Solenoid valve for charge pressure
Page 27 and 28: Emission characteristics Minimising
Page 29 and 30: Internal functions in the control u
Page 31: Performance diagram Engine performa

1,9 ltr-TDI-Industrial Engine - Volkswagen Technical Site

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