Cayenne V6 DFI Engine

Cayenne V6 DFI Engine

On the new Cayenne V6 engine, displacement has been increased by 0.4 liters to 3.6 liters with a compression ratio of 12.25. Engine power has increased by 40 HP to 290 HP, while the torque is now 285 ftlb. (385 Nm), an increase of +56 ftlb. (+75 Nm). Idling rpm is 680 and maximum engine rpm is 6700.







Significant modifications to the V6 DFI engine:
- Direct fuel injection (DFI).
- New engine control unit Bosch MED 9.1.
- New extended twin branch exhaust system and additional main catalytic converter.
- New cylinder head for DFI.
- New recessed pistons.
- Continuous camshaft adjustment on intake and exhaust side.
- Intake system with variable intake manifold.

Motronic Control Units MED 9.1

The new DME control unit MED 9.1 from Bosch has been specially adapted to suit direct fuel injection and the modified engine specifications of the V6 DFI engine. It can be programmed with the country-specific data records of the Cayenne V6.







Cylinder Head







The design of the direct fuel injection system, with two separate high pressure rails, the arrangement of the fuel injectors -1- (for cylinders 1, 3, 5) and -2- (for cylinders 2, 4, 6) as well as the high pressure pump -3-, has made it necessary to redesign the cylinder head.

Piston Recesses

The piston recesses -1- on the V6 engine have been adapted for the purpose of achieving optimal stratification of the air/fuel mixture during the late injection processes that characterize high pressure stratified charge ignition as well as during the catalytic converter heating phase.







The compression ratio has been increased from 11.5:1 to 12.25 due to improved inner cooling. This reduces fuel consumption and optimizes engine power.