This comprehensive 56-page PDF file contains the official VAG Self-Study Program 437 (SSP 437), dedicated entirely to the design, function, and engineering theory of the highly tunable Audi 3.0-liter V6 TFSI engine. First introduced in the 2009 Audi A6, this engine marked a major milestone for Audi by utilizing a belt-driven Roots-type supercharger rather than their traditional exhaust-driven turbochargers, resulting in immediate throttle response and massive low-end torque. While this is not a step-by-step workshop manual, the technical knowledge it provides is absolutely indispensable for mechanics performing complex diagnostics and enthusiasts looking to modify the supercharger system.
This highly detailed technical guide covers the following critical areas:
- Engine Architecture and Internal Strengthening: A deep dive into how the naturally aspirated 3.2L V6 block was adapted for boost. It details the specific changes to the cylinder block, the upgraded crankshaft and pistons, and the modified valvetrain required to handle higher cylinder pressures while maintaining a high 10.5:1 compression ratio.
- The Roots Blower Supercharger Module: The core of the 3.0T’s performance. It thoroughly maps out the design of the compressor module, which acts as the intake manifold. It explains the operation of the four-vane rotors (spinning up to 23,000 rpm) and the crucial electronically controlled bypass valve that regulates boost pressure.
- Charge Air Cooling: Essential reading for managing heat. It breaks down the theory and function of the dual water-to-air intercoolers packaged inside the supercharger housing, and the dedicated low-temperature coolant circuit that prevents heat soak.
- Engine Management and Fuel Injection: A comprehensive overview of the Simos 8 engine management system. It explains the high-pressure common rail fuel system capable of 150 bar of pressure and multiple injections per cycle, which cools the combustion chamber to prevent knock under boost.
- Emissions and Ancillary Systems: The manual concludes with explanations of the secondary air injection system, the complex dual-belt drive system required to spin the supercharger, and the modified exhaust system.
Whether you are trying to understand the exact actuation of the supercharger bypass valve, mapping out the low-temperature coolant loop, or preparing for a major engine service, SSP 437 is the definitive technical resource for the supercharged 3.0L V6.
CONTENTS
- Introduction
- Selector lever
- Design of the gearbox
- Mechatronic module
- Electrohydraulic control unit
- Oil circuit – hydraulic system
- Gearbox management system
- Diagnosis
- Service
- Test yourself
Language: English
Format: PDF
Pages: 76
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