Self Study Program 411 – Audi 2.8L and 3.2L FSI engines with Audi valvelift system
VAG SSP 411. Due to the commonalities between the 2.8l and 3.2l FSI engines, both units are described in this Self-Study Programme. Audi has again extended its current vee engine series to include an additional power plant. The new 2.8l FSI engine fills the gap between the 2.4l MPI engine, which will be produced until mid-2008, and the 3.2l FSI engine. Moreover, this engine is a new technology platform.
Featured new technologies are:
- the Audi valvelift system,
- a flow-regulated oil pump with dual-stage pressure control and
- trioval sprockets.
The primary targets for development were to improve friction and fuel efficiency.
Internal engine friction was reduced through the following modifications:
- Reduction of pre-load on the 2nd and 3rd piston rings
- Use of the Audi valvelift system (small intake stroke at partial throttle)
- Reduction of the exhaust valve stroke (10 mm -> 9 mm)
- Replacement of the bucket tappets in the high-pressure pump drive with cylindrical tappets
- Adoption of roller chains for chain drives A to C
- Development of trioval sprockets with a friction-enhanced chain tensioner design
- Downsizing of the oil pump
- Integration of an oil pump flow regulator with dual-stage pressure control
- Downsizing of the coolant pump and increasing of the thermostat temperature
The new technologies will also be featured on forthcoming versions of the current engines. The 3.2l FSI engine will be the next in line.
- Engine mechanicals
- Engine block
- Crank mechanism
- Crankcase ventilation system
- Crankcase air intake system
- Cylinder head
- Audi valvelift system
- Chain drive
- Actuation of ancillary units
- Oil circulation system
- Lubrication system
- Oil pump
- Oil level indicator
- Cooling system
- Engine cooling system
- Air circulation system
- Throttle valve control unit J338
- Variable intake manifold
- Vacuum hose assembly
- Fuel system
- Low/high pressure system
- Exhaust system
- Exhaust system
- Engine management
- System overview for the 2.8l FSI engine
- Special tools
The Self-Study Programme teaches the design and function of new vehicle models, automotive components or technologies.
The Self-Study Programme is not a Repair Manual!
The values given are intended as a guideline only and refer to the software version valid at the time of publication of the SSP. For information about maintenance and repair work, always refer to the current technical literature.