Technical data
Table Of Contents
- E60 M5
- System overview
- Foreword
- Purpose of this Participant's Manual
- Introduction
- S85B50
- Basic engine and add-on parts
- Upper section of crankcase
- Bedplate
- Crankcase
- Cylinder head
- Crankshaft/main bearings
- Connecting rods
- Pistons
- Camshaft
- Valve springs
- Valve cotters
- Box-type tappets
- Valves
- VANOS High pressure pump
- VANOS Actuators
- VANOS gear mechanism
- VANOS Pressure accumulator
- Oil pumps
- Electric oil pumps
- Oil spray nozzles
- Oil filter housing
- Exhaust manifold
- Intake air manifold
- Intake silencers
- Radiator
- Thermostat
- Objectives
- Purpose of this Participant's Manual
- Introduction
- Functional Principle of the Digital Motor Electronics
- Digital Motor Electronics (DME)
- DME control unit Siemens MS_S65
- Hot-film air mass meter (HFM)
- Fuel pressure sensor
- Electric fuel pump (EKP)
- EKP module
- Ionic current control unit
- Crankshaft sensor
- Camshaft sensor
- Oil condition sensor (QLT)
- Oil pressure switch
- Oil extraction pump
- Idle speed actuator (LLS)
- Throttle valve actuator motor
- Throttle valve sensor (DKG)
- Secondary air pump
- Mini HFM for secondary air system
- Primary oxygen sensor (control sensor)
- Secondary oxygen sensor (monitor sensor)
- Exhaust gas temperature sensor
- Pressure accumulator shut-off valve (VANOS)
- Service information
- Objectives
- Purpose of this Participant's Manual
- New 7-speed SMG
- The new SMG3
- Special functions
- Transmission ratio of the SMG3
- Gearshift pattern
- Signals and parameters
- Hydraulic system
- Initialization
- Purpose of this Participant's Manual
- MK60E5 from Continental Teves
- Further development of the MK60psi
- DSC Additional Functions
- Differences compared to the MK60psi
- Purpose of this Participant's Manual
- Additional Functions
- Differences compared to the E60
- Displays and indicators in the E60 M5
22
9
Pressure accumulator preload
A function for checking the accumulator
prepressure has been implemented to
facilitate diagnosis for service applications.
The diagnostic procedure evaluates the time
required to discharge the accumulator. The
pressure sensor of the hydraulic unit is used to
measure the pressure.
The SMG control unit still measures the time
required for filling. If a shorter period of time is
required to reach the cutoff pressure this
indicates that the nitrogen, which the
accumulator must contain as the preload
medium, has leaked out of the accumulator.
The shut-off valve on the pressure
accumulator is monitored separately.