BMW Product info Vanos.pdf

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Product Information
VANOS
BMW Service
Aftersales Training
The information contained in the Product Information and the Workbook form an integral part of
the training literature of BMW Aftersales Training.
Refer to the latest relevant BMW Service information for any changes/supplements to the
technical data.
Information status: June 2005
conceptinfo@bmw.de
© 2005 BMW Group
München, Germany. Reprints of this publication or its parts require the written
approval of
BMW Group, München.
VS-12 Aftersales Training
Basic Engine Principles
VANOS
Improved exhaust-emission performance
Reduced consumption
Increased power and torque
Notes on this product information
Symbols used
The following symbols are used in this product information to facilitate
better comprehension and to draw attention to important information.
contains information for better understanding of the described
systems and their functions.
1
identifies the end of an item of information.
Status of product information
In view of the constant further developments in the design and equipment
of BMW vehicles deviations may arise between this product information
and the vehicles made available as part of the training course.
The background material refers exclusively to left-hand drive vehicles.
The controls are in part arranged differently in right-hand drive vehicles
than shown on the graphics in the product information.
Additional information sources
You will find further information on the individual topics in following
documentation:
- Owner's Handbook
- BMW diagnostic system
- Workshop systems documentation
- SBT BMW Service Technology
3
Contents
VANOS
Objectives
Product information and reference work for
practical applications
1
1
3
3
Models
Variable camshaft timing
Introduction
Variable camshaft timing
7
7
System overview
Valve gear function
VANOS Systems on BMW Engines
Two-setting inlet VANOS
Infinitely variable inlet VANOS
Infinitely variable double VANOS
Infinitely variable high-pressure inlet VANOS
Infinitely variable high-pressure double
VANOS
13
13
14
18
21
26
40
45
63
63
Service information
System overview
Summary
Points to remember
65
65
Test questions
Questions
Answers to questions
69
69
70

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