Taken from the VW self study manual on the Vr5 engine
Why do V-engines exist?
Front-wheel drive, in combination with a transversely mounted four-cylinder inline engine, is now part and parcel of many motor vehicle
concepts. Installing the engine transversely has promoted the development of more compact vehicles. But the vehicle width is not sufficient to
accommodate inline engines with more than four cylinders.
This is why the V-engine came into being.
Al-though V-engines have a very short overall length, they are rather wide - with a V-angle of 60° or 90°
- and hence cannot be used in smaller mid-range vehicles.
V-engine with an angle of 15
°
The VR engines and the new V5 engine combine the advantages of the V-concept with the advantages of the inline engine.
These are:
short overall length thanks to V-angle,
small overall width thanks to the
V-angle of 15
only one cylinder head is required,
The V5 was derived from the VR6 by removing the 1st cylinder from the latter.
The resulting, even more compact design makes it possible to use this powerful unit in all vehicle classes.
Engine code
AGZ
V-angle
15°
Displacement
2324 cm
Bore 81.0 mm
Stroke
90.2 mm
Compression ratio
10.0 : 1
Firing order
1 - 2 - 4 - 5 - 3
Mixture preparation and ignition Bosch Motronic M3.8.3
Fuel
95 RON unleaded premium
Exhaust gas aftertreatment:
Three-way catalytic converter with lambda control