Self Study Program 437 – Audi 3.0L V6 TFSI engine with Roots blower

VAG SSP 347. In this Self-Study Programme you will learn about the design and operation of the 3.0l V6 TFSI engine. It provides you with all the information you need to describe the engine.

For the first time, Audi has brought to market a mechanically supercharged powerplant: the 3.0l V6 TFSI. This Roots blower supercharged engine is based on the 3.2l V6 naturally aspirated engine from the current Audi V engine family.

By embracing new technology, in combination with the FSI combustion process, Audi has developed an engine concept that cuts an impressive figure in terms of its compact design, acoustics, responsiveness and fuel efficiency.

The engine has a broad range of characteristics from comfort-oriented to ultra-sporty. The sporty version of the engine specifically targets US clientele. The car’s so-called take-off behaviour plays a key role here. The aim is to achieve the greatest possible acceleration between traffic lights in urban traffic.

With its enormous power, however, the 3.0l V6 TFSI engine is also well suited to comfort-oriented driving. A wide range of uses have been envisaged for it within the Audi product portfolio. In Europe, China and the USA, it will be available for the first time from the autumn of 2008 in the Audi A6.

Historically, mechanical supercharging using Roots blowers is nothing new to cars bearing the four-ring badge. In fact, Roots blowers were once used on the engines of the legendary AUTO UNION racing cars (“Silver Arrows”), which were powered by huge V engines with up to 16 cylinders supercharged by up to two Roots blowers. Between 1934 and 1939, the legendary AUTO UNION drivers spearheaded by Hans Stuck and Bernd Rosemeyer racked up numerous Grand Prix wins, not to mention setting a string of world speed records.

The objectives of this Self-Study Programme

Once you have worked your way through this Self-Study Programme, you will be able to answer the following questions:

  • How is the engine designed mechanically?
  • How does the cooling system work, and to what should attention be paid during servicing?
  • How does the Roots blower based mechanical supercharging system work?
  • What are the special features of the improved fuel system?
  • How is the exhaust system configured?
  • What are the new features of the engine management system?
  • What do service employees need to know about the new engine?


  • Introduction
    • Brief technical description
  • Engine mechanicals
    • Cylinder block
    • Crank mechanism
    • Crankcase ventilation
    • Cylinder head
    • Driving the ancillary units/components
  • Oil supply
    • Oil circulation system
  • Air supply
    • Air circulation system
    • Supercharger module
    • Load management
    • Intake manifold flaps
    • Soundproofing
  • Cooling system
    • Cooling circuit
    • Charge air cooling (intercooling)
  • Exhaust emissions treatment
    • Secondary air system
  • Fuel system
    • Overview
    • Injectors
  • Engine management
    • System overview
    • Engine control unit
  • Service
    • Maintenance work
    • Special tools
  • Annex
    • Glossary
    • Test yourself
  • Summary
    • Self-Study Programmes

The Self-Study Programme teaches the design and function of new vehicle models, new automotive components or new technologies.
The Self Study Programme is not a Repair Manual. All values given are intended for reference purposes only and refer to the software version valid at the time of preparation of the SSP.
For information about maintenance and repair work, always refer to the current technical literature.
Terms written in italics or indicated by an asterisk (*) are explained in the glossary at the back of this Self-Study Programme.

Language: English
Format: PDF
Pages: 56

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