BMW N55 Manuals

BMW N55 Manuals

Manuals and User Guides for BMW N55. We have 1 BMW N55 manual available for free PDF download: Manual

BMW N55 Manual (100 pages)

Brand: BMW | Category: Engine | Size: 3.38 MB

Table of Contents

Table of Contents
1
Subject Page

2
Introduction

5
- Engine Components/Systems Overview
  6
- Technical Data
  8
  - Full Load Diagram
    9
- Current Models
  10
- Engine Designation and Engine Identification
  11
Engine Components

14
- Engine Housing
  14
  - Engine Block
    14
  - Crankcase and Bedplate
    14
- Crankshaft
  17
  - Crankshaft Main Bearings
    17
- Pistons and Rings
  18
- Connecting Rod and Bearings
  19
- Oil Pan
  22
- Electrionic Volume-Controlled Oil Pump
  23
  - Oil Pump and Pressure Control
    24
- Oil Supply
  27
  - Oil Filtration and Oil Cooling
    30
  - Oil Spray Nozzles
    31
  - Oil Pressure
    31
  - Oil Level
    31
  - Oil Return
    31
- Cylinder Head
  32
  - Cylinder Head Cover
    33
- Crankcase Ventilation
  34
  - Naturally Aspirated Mode
    34
  - Boost Mode
    36
- Valvetrain
  39
  - Intake and Exhaust Valves
    40
  - Valve Springs
    40
Subject

41
- Camshafts
  41
  - Valve Timing
    42
- VANOS System
  43
  - Overview
    44
  - VANOS Solenoid Valves
    45
  - Cam Sensor Wheels
    45
- Valvetronic III
  46
  - Phasing
    46
  - Masking
    46
  - Combustion Chamber Geometry
    49
  - Valve Lift Adjustment Overview
    50
    
    Valvetronic Servomotor
    52
    
    Function
    52
- Belt Drive and Auxiliarly Components
  53
- Vibration Damper
  54
- Air Intake and Exhaust System
  56
  - Air Intake System
    56
  - Intake Manifold
    59
  - Fuel Tank Ventilation System
    60
  - Exhaust Manifold
    61
  - Turbocharger
    62
    
    Function of the Twin Scroll Turbocharger
    65
    
    Diverter Valve
    65
  - Catalytic Converter
    66
  - Exhaust System
    67
- Vacuum System
  68
  - Vacuum Pump
    69
- Fuel Injection
  71
  - Fuel Pressure Sensor
    72
  - High Pressure Fuel Pump
    73
  - Fuel Injectors
    74
- Cooling System
  75
  - Components
    77
  - N55, Cooling System Components
    77
    
    Oil Cooler
    79
  - Coolant Passages
    80
Engine Electrical System

82
- Circuit Diagram
  83
  - Engine Cooling Circuit Diagram
    85
- Digital Motor Electronics (DME/ECM)
  87
  - Digital Motor Electronics Circuit Diagram
    88
  - N55, MEVD17.2 Circuit Diagram
    88
Subject

90
- Functions
  90
  - Fuel Supply System
    90
  - Fuel Quantity Control
    90
  - Boost Pressure Control
    90
  - Engine Cooling
    91
  - System Protection
    92
- Crankshaft Sensor
  92
- Ignition Coil
  94
- Oil Pressure Sensor
  95
- Oxygen Sensors
  95
- High Pressure Fuel Injector Valve
  97
  - Function
    98
Service Information

99
- Cylinder Head
  99
- Cylinder Head Cover
  99
- Fuel Injectors
  99
- Ignition Coils
  100

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