Citroen: Bosch HDI EDC 15 C2 Injection System and Particle Filter



Citroen Bosch HDI EDC 15C2 Injection System and Particle Filter PDF

Citroen: Bosch HDI EDC 15 C2 Injection System and Particle Filter PDF. The aim of this brochure is to define the composition and operation of a BOSCH EDC 15 C2 HDI diesel engine management system, combined with a particle filter system, in relation to the DW12 Diesel engine.

This device consists of an ECU which analyses the information from the various sensors, and then operates the injectors at the correct moment. It also controls a pressure regulator, the exhaust gas recycling electrovalve and the turbocharging pressure modulating electrovalve.

The following subjects are dealt with in this document:

  • General details and system presentation,
  • Description and operation of the components of the various functions, or the functions themselves,
  • Description of the operating phases:
    – of the injection system,
    – of the particle filter system.
  • Notes on maintenance,
  • The electrical circuit.

CONTENTS:

CHAPTER 1: GENERAL DETAILS: HDI DIRECT INJECTION SYSTEM

  • FOREWORD
  • PRINCIPLE OF HDI
  • PARTICLE FILTRATION PRINCIPLE
  • SAFETY INSTRUCTIONS

CHAPTER 2: GENERAL LAYOUT: HDI SYSTEM

CHAPTER 3: FUEL SUPPLY FUNCTION

  • DIAGRAM
  • COMPONENTS COMMON WITH DOCUMENT “BOSCH EDC 15C2 HDI .. INJECTION SYSTEM”
  • SPECIFIC COMPONENTS
  • ELECTRIC FUEL HEATER (1276)
  • LOW PRESSURE PUMP SUPPLY CUT-OFF

CHAPTER 4: AIR SUPPLY FUNCTION

  • DIAGRAM
  • COMPONENTS COMMON WITH DOCUMENT “BOSCH EDC 15C2 HDI .. INJECTION SYSTEM”
  • SPECIFIC COMPONENTS
  • VACUUM RESERVE
  • VARIABLE GEOMETRY TURBOCHARGER
  • VARIABLE “SWIRL”
  • SWIRL CONTROL ELECTROVALVE (1264)
  • FEATURE: INLET MANIFOLD PRESSURE SENSOR (1312)

CHAPTER 5: EXHAUST GAS RECYCLING FUNCTION

  • DIAGRAM
  • COMPONENTS COMMON WITH DOCUMENT “BOSCH EDC 15C2 HDI .. INJECTION SYSTEM”
  • SPECIFIC COMPONENTS
  • WATER/EXHAUST GAS EXCHANGER (EGR)
  • THROTTLE HOUSING (EGR)
  • THROTTLE HOUSING CONTROL ELECTROVALVE (EGR) (1263)

CHAPTER 6: HDI SYSTEM

  • COMPONENTS COMMON WITH DOCUMENT “BOSCH EDC 15C2 HDI .. INJECTION SYSTEM”
  • SPECIFIC COMPONENTS
  • DOUBLE INJECTION RELAY (BSM) – FEATURE
  • COOLANT TEMPERATURE SENSOR (1220) – FEATURE
  • FUEL TEMPERATURE SENSOR (1221) – FEATURE
  • BRAKE SWITCH (2100) – FEATURE
  • CRUISE CONTROL BRAKE PEDAL SWITCH (7308) – FEATURE
  • CLUTCH SWITCH (7306) – FEATURE
  • VEHICLE SPEED SENSOR – FEATURE
  • INJECTION ECU (1320) – FEATURE

CHAPTER 7: PRE-POST HEATING FUNCTION

  • COMPONENTS COMMON WITH DOCUMENT “BOSCH EDC 15C2 HDI .. INJECTION SYSTEM”
  • PREHEATER PLUGS (1160) – FEATURE

CHAPTER 8: ENGINE COOLING FUNCTION (FRIC)
(INCORPORATED INTO THE INJECTION ECU)

  • DIAGRAM
  • FAN UNIT (1510)
  • COOLANT TEMPERATURE SENSOR (1220)
  • POSTVENTILATION
  • DOWNGRADED MODE

CHAPTER 9: COOLING REQUIREMENTS FOR THE AIR
CONDITIONING (BRAC) (INCORPORATED INTO THE INJECTION ECU)

  • DIAGRAM
  • AIR CONDITIONING PRESSURESTAT (8007)
  • FAN UNIT (1510)
  • DOWNGRADED MODE

CHAPTER 10: PARTICLE FILTER FUNCTION

  • DIAGRAM
  • PARTICLE FILTER
  • CATALYTIC CONVERTER
  • EXHAUST GAS TEMPERATURE SENSOR (UPSTREAM OF THE CATALYTIC CONVERTER) (1344)
  • EXHAUST GAS TEMPERATURE SENSOR (DOWNSTREAM OF THE …. CATALYTIC CONVERTER) (1343)
  • DIFFERENTIAL PRESSURE SENSOR (1341)
  • AIR TEMPERATURE SENSOR (1310)
  • AIR/WATER HEAT EXCHANGER (HEATING OF THE INLET AIR)
  • INLET AIR HEATER THROTTLE
  • THROTTLE HOUSING CONTROL ELECTROVALVE (HEATING OF THE INLET AIR) (1285)
  • THROTTLE HOUSING CONTROL ELECTROVALVE (EGR) (1263)
  • BUILT-IN SYSTEMS INTERFACE (BSI1)
  • INJECTION ECU (1320)

CHAPTER 11: FUEL ADDITIVE FUNCTION

CHAPTER 12: OPERATING PHASES: HDI DIRECT INJECTION SYSTEM

CHAPTER 13: OPERATING PHASES: PARTICLE FILTRATION

CHAPTER 14: MAINTENANCE: HDI INJECTION SYSTEM

CHAPTER 15: WIRING DIAGRAM

Language: English
Format: PDF
Pages: 155
Size: 1.27 Mb
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