BMW N55 Engine TRAINING Manual

These digital manuals provide comprehensive technical information on engine components and systems, including an overview of engine designations and identifications. They cover a breakdown of the N55 engine designation, engine housing, block, crankcase, crankshaft, pistons, oil pump, filtration, and cooling systems. The manuals also detail the cylinder head, valvetrain, VANOS system, combustion chamber geometry, belt drive, air intake, exhaust system, fuel injection, cooling system, and engine electrical system.

• Engine Components/Systems Overview
• Technical Data
• Full Load Diagram
• Current Models
• Engine Designation and Engine Identification
  • Engine Designation
  • Breakdown of N55 Engine Designation
  • Engine Identification
• Engine Components
  • Engine Housing
  • Engine Block
  • Crankcase and Bedplate
  • Crankshaft
  • Crankshaft Main Bearings
  • Pistons and Rings
  • Connecting Rod and Bearings
  • Oil Pan
  • Electronic Volume-controlled Oil Pump
  • Oil Pump and Pressure Control
  • Oil Supply
  • Oil Filtration and Oil Cooling
  • Oil Spray Nozzles
  • Oil Pressure
  • Oil Level
  • Oil Return
• Cylinder Head
  • Cylinder Head Cover
  • Crankcase Ventilation
  • Naturally Aspirated Mode
  • Boost Mode
• Valvetrain
  • Intake and Exhaust Valves
  • Valve Springs
  • Camshafts
  • Valve Timing
  • VANOS System
    • Overview
    • VANOS Solenoid Valves
    • Cam Sensor Wheels
    • Valvetronic III
    • Phasing
    • Masking
  • Combustion Chamber Geometry
  • Valve Lift Adjustment Overview
  • Valvetronic Servomotor
• Belt Drive and Auxiliary Components
  • Vibration Damper
• Air Intake and Exhaust System
  • Air Intake System
  • Intake Manifold
  • Fuel Tank Ventilation System
  • Exhaust Manifold
  • Turbocharger
    • Function of the twin-scroll turbocharger
    • Diverter valve
  • Catalytic Converter
  • Exhaust System
  • Vacuum System
    • Vacuum Pump
• Fuel Injection
  • Fuel Pressure Sensor
  • High-Pressure Fuel Pump
  • Fuel Injectors
• Cooling System
  • Components
  • N55, Cooling System Components
  • Oil Cooler
  • Coolant Passages
• Engine Electrical System
  • Circuit Diagram
  • Engine Cooling Circuit Diagram
  • Motor Electronics (DME/ECM)
    • Motor Electronics Circuit Diagram
    • N55, MEVD17.2 Circuit Diagram
  • Functions
    • Fuel supply system
    • Fuel quantity control
    • Boost pressure control
    • Engine cooling
    • System Protection
    • Crankshaft Sensor
    • Ignition Coil
    • Oil Pressure Sensor
    • Oxygen Sensors
      • Oxygen sensor before catalytic converter
      • Oxygen sensor after catalytic converter
    • Hot-film air mass meter
    • High-Pressure Fuel Injector Valve
      • Function
  • Service Information
    • Cylinder Head
    • Cylinder Head Cover
    • Fuel Injectors
    • Ignition Coils