Self-Study Programme 452 3.0L V6 245kW TSI engine with supercharger in the Touareg hybrid.pdf

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Service Training
Self-study Programme 452
The 3.0 l V6 245kW TSI engine with
supercharger in the Touareg Hybrid
Design and Function
The 3.0 l V6 engine with supercharger and hybrid
drive sees Volkswagen employ a new drive concept.
The engine is fitted in the Touareg Hybrid model year
2011. You will find further information in self-study
programme SSP 450 “The Touareg Hybrid”.
The engine has already been used at Audi without the
hybrid combination.
By incorporating new technology and combining the
direct injection method, the resulting engine concept is
extremely impressive in terms of compact design,
acoustics, response and fuel consumption.
The engine has very diverse characteristics. It is
therefore suited to driving styles ranging from
comfort-oriented to very sporty. The sporty
configuration of the engine in particular is aimed at a
special group of customers. The so-called take-off
performance of the vehicle plays a major role here.
The aim is to achieve the greatest possible
acceleration between traffic lights in urban traffic.
S452_002
Please note that only persons with
technical training in electrics may
work on the vehicle once the
battery has been disconnected.
The self-study programme portrays the
design and function of new
developments.
The contents will not be updated.
For current testing, adjustment and repair
instructions, refer to the relevant After Sales
literature.
Important
Note
2
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Engine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Air Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Exhaust Gas Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Oil Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Engine Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Glossary –
explanation of
HIGHLIGH TED
terms
. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Test Yourself . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3
Introduction
The 3.0 l V6 245kW TSI engine with supercharger
Technical features of engine
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Six-cylinder V engine with mechanical
supercharging
Additional charge air cooler before main cooler
Volumetric flow-controlled oil pump
Demand regulated fuel system
Intake manifold flaps
Ultrasound oil level sensor
Secondary air system for compliance with
emissions laws
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Belt drive for supercharger
Charger module with integrated charge-air
cooling
Camshaft adjustment only on intake side
Electric drive motor V141, also called
electric motor/generator
The following components are electrically driven:
Vacuum pump for brake servo (in addition to
mechanical vacuum pump), power steering pump,
air-conditioning compressor
Charger module
2nd belt drive
1st belt drive
S452_010
Superchargers are sometimes called
charger modules or Roots blowers.
Crankshaft drive
4
Torque output curve
During kickdown, the drive power outputs from the
combustion engine and electric motor are combined
to deliver a total maximum power of 279kW. This
means that the output curve is raised by the drive
power figure of 34kW for the alternator. This occurs
across almost the whole rev range.
Torque (Nm)
Torque increase from electric motor (Nm)
Output (kW)
Power increase from electric motor (kW)
Engine speed (rpm)
S452_011
Technical data
Engine code
Type
Displacement
Bore
Stroke
Valves per cylinder
Compression ratio
Maximum output
Firing order
Maximum torque
in petrol mode
Engine management
Fuel
Mixture formation
Exhaust gas treatment
CGEA
6-cylinder V engine
2,995 cm
3
84.5 mm
89 mm
4
10.5:1
245kW at 5,500 to 6,500 rpm
1-4-3-6-2-5
440 Nm at
3,000 to 5,250 rpm
Bosch MED 17.1.6
Premium unleaded RON 95
Direct injection TSI (homogeneous)
High-pressure fuel pump HDP 3
Cylinder bank-specific Lambda control with a broadband probe before
catalytic converter for each cylinder bank, two ceramic catalytic converters
with downstream transient Lambda probe (step-type Lambda probe)
EU5
Emissions standard
5

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