Audi 4.2-litre V8 FSI User Manual

377
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Technical status: 03/06
Printed in Germany
A06.5S00.23.20
Audi 4.2-litre V8 FSI engine
Self-Study Programme 377
Vorsprung durch Technik www.audi.de
Service Training

Audi 4.2-litre V8 FSI Specifications

General

Engine Type	V8
Fuel System	FSI (Fuel Stratified Injection)
Aspiration	Naturally Aspirated
Torque	440-430 Nm (depending on the model)
Compression Ratio	12.5:1
Bore x Stroke	84.5 mm x 92.8 mm
Valvetrain	DOHC, 4 valves per cylinder
Displacement	4.2 liters
Power Output	350-450 hp
Horsepower	350-450 hp
Redline	7000 rpm

Summary

Engine mechanicals

Cranktrain

Details the crankshaft, its bearings, and the vibration damper.

Cylinder block

Describes the construction and material of the cylinder crankcase.

Cylinder head

Covers the specifications and features of the cylinder heads.

Oil circulation system

Oil pump and oil filter module

Details the location and function of the oil pump and filter module.

Cooling system

Fuel system

Fuel system in the Audi Q7/RS4

Describes the high-pressure fuel pumps and system layout for both Q7 and RS4.

Engine management

System overview - Audi Q7 (Bosch MED 9.1.1)

Lists sensors and actuators for the Q7 engine management system.

System overview - Audi RS4 (Bosch MED 9.1)

Lists sensors and actuators for the RS4 engine management system.

Operating modes

Explains start and normal operation modes for stratified charge and homogeneous carburetion.

Start mode of the Audi RS4

Sport mode of the Audi RS4