Basic Function of BMW Vanos System Manual

Short Description: M62TU Engine 2 Vanos Operation 3-12 Engine Cooling System 13 IHKA System Auxilary Pump 14 DME-ME 7.2 Engine Management 15 Integral Electronic Throttle System (EML)Input Signal/Components 19 Camshaft Position Sensors 19 Hot Film Air Mass Sensor (HFM 5) 20 Integrated Ambient Barometeric Pressure Sensor 21 Radiator Outlet Temperature Sensor 22 DSC III Road Speed Signal 22 Accelerator Pedal Sensor (PWG) 23 EDK Throttle Position Feedback Signal 24 MFL Cruise Control Data Signal 25 Brake Light Switch 25 Can Bus 26 Output Control Functions27 E-Box 27 Secondary Air Injection 28 Auxiliary Fan Control 29 Electric Throttle Control 30 DM-TL 31 Leak Diagnosis Test Precondition 34

Content Inside: All BMW VANOS systems are operated through electric/hydraulic/mechanical control. Electric Control: The engine control module is responsible for activating a VANOS solenoid valve based on DME program mapping. The activation parameters are influenced by the following input signals:
• Engine speed
• Load (intake air mass)
• Engine temperature
• Camshaft position
• Oil temperature (MS 42.0 only)
Depending on the specific VANOS system, the solenoid valve is one of two types:
• Basic black/white (on/off) solenoid valve. Found on M50 TU and M52 engines.
• Variable position solenoid valve. Found on the M52 TU and M62 TU engines.

Hydraulic Control: The position of the solenoid valve directs the hydraulic flow of engine oil. The controlled oil flow acts on the mechanical components of VANOS system to position the camshaft. Mechanical Control: The mechanical components of all VANOS systems operate under the same principle. The controlled hydraulic engine oil flow is directed through advance

Basic Function of BMW Vanos System Manual
Source: www.bmwclub.lv