Audi 3.0l V6 TDI Biturbo Engine - Self Study Programme 604

Oct 29, 2026

Upload by Rowan

Self Study Programme 604 for internal use explains the design and function of the Audi 3.0l V6 TDI biturbo engine. The program focuses on the compact two-stage charging system in the inner V and around the gearbox bell housing, detailing high- and low-pressure turbocharger control and torque characteristics. It also covers engine mechanicals, charging architecture, cooling configuration, fuel injection using a common-rail system, exhaust system features, and engine management, including key specifications and learning objectives.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages23

Reading Time58 min

AccessFree to download

Introduction

Brief technical description

Specifications

Torque-power curve

Engine mechanicals

Cylinder block and crank drive

Oil vacuum pump and coolant pump

Cylinder head

Coolant flow

Cooling circuit

Charging

Biturbo charging

System design

Function in map

Fuel system

Common rail injection system

Engine management

System overview

Exhaust system

Overview

Sound actuator and active sound exhaust system

Self Study Programme 604 For internal use only Audi 3.0l V6 TDI Biturbo Engine Audi Service Training 3.0lV6 TDI biturbo engine Following the launch of the 2nd Gen 3.0l V6 TDI engine, Audi now introduces a biturbo version based on the 2nd Gen 3.0l V6 TDI engine. The core of the unit is the compact two-stage charging system installed in the inner V of the engine and over the gearbox bell housing. The two in-line chargers are subdivided into a high pressure exhaust turbocharger and a low pressure exhaust turbocharger. The high pressure exhaust turbocharger has a Variable Turbine Geometry with an electrical positioner. The low pressure exhaust turbocharger is regulated by a wastegate valve and designed for high air ﬂow rates, with the result that the engine delivers high torque at low rpm combined with performance potential right up to the top end of the rev band. The development goal was to build an engine that sets new standards for sporty diesel engines by ts dynamic torque and revving ability. By adopting all eﬃciency measures from the basic engine, e.g. thermal management system, friction-reducing enhancements, weight reduction and start-stop system, the 3.0l V6 TDI biturbo engine strikes a good balance between high performance and fuel eﬃciency. Other premises for the development of the engine were that it was to be produced on the assembly line of the basic engine at the Györ engine plant, and that maximum use was to be made of common and synergetic parts shared with the 2nd Gen V6 TDI engine. 604_003 Learning objectives of this Self Study Programme: This Self Study Programme describes the design and function of the 3.0l V6 TDI biturbo engine. After you have worked your way through this Self Study Programme, you will be able to answer the following questions: • Which aspects of the engine mechanicals have changed? • How is the cooling system conﬁgured in the cylinder head? • How is the biturbo system designed? • How are both turbochargers controlled? Contents Introduction Brief technical description _________________________________________________________________________________________________________________________________ 4 Speciﬁcations ________________________________________________________________________________________________________________________________________________ 6 Engine mechanicals Cylinder block and crank drive _____________________________________________________________________________________________________________________________ 7 Oil vacuum pump and coolant pump ______________________________________________________________________________________________________________________ 8 Cylinder head ________________________________________________________________________________________________________________________________________________ 9 Coolant ﬂow ________________________________________________________________________________________________________________________________________________ 10 Cooling circuit ______________________________________________________________________________________________________________________________________________ 11 Charging Biturbo charging ___________________________________________________________________________________________________________________________________________ 12 System design ______________________________________________________________________________________________________________________________________________ 16 Function in map ____________________________________________________________________________________________________________________________________________ 17 Fuel system Common rail injection system ____________________________________________________________________________________________________________________________ 18 Engine management System overview ____________________________________________________________________________________________

FAQs

What is the main purpose of Self Study Programme 604?

It describes the design and function of the 3.0l V6 TDI biturbo engine and enables learners to answer questions about changed mechanical aspects, cooling configuration, biturbo design, and turbocharger control.

How is the biturbo charging system structured?

The engine uses a compact two-stage charging system located in the inner V and over the gearbox bell housing, with a high-pressure exhaust turbocharger and a low-pressure exhaust turbocharger.

Which key specifications are provided for the engine?

The program includes torque-power characteristics and detailed data such as engine code, displacement, power output, torque, valve count, compression ratio, engine management, fuel standard, maximum injection pressure, emissions standard, and CO2 emissions.

Oct 29, 2026

Upload by Rowan