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Variable Turbine Geometry (VTG) 911 Turbo

Porsche 911 Turbo - Variable Turbine Geometry (VTG)

Variable Turbine Geometry (VTG)

The variable turbine geometry of the twin water-cooled exhaust gas turbochargers goes a long way to resolving the conflict of aims of normal turbochargers. With this technology, the gas flow from the engine is channeled onto the turbines via electronically adjustable guide vanes. By changing the vane angle, the system can replicate the geometry in all types of turbo, large or small. And thus achieve the optimum gas-flow characteristics. The guide vanes are controlled by the engine management system.

This results in a high turbine speed – and therefore greater boost pressure – even at low engine rpm. With more air available, the combustion is increased, yielding better power and torque. The torque curve reaches its maximum level much sooner – and stays there. Variable turbine geometry also improves the response of the turbo engine with dynamic boost pressure development.

When the boost pressure reaches its maximum value, the guide vanes are opened further. By varying the vane angle, it is possible to achieve the required boost pressure over the entire engine speed range. So excess pressure valves are no longer required.

The fuel economy that is achieved despite the high power output is impressive. Simply efficient, just as it should be with a turbo. A 911 Turbo to be precise.

Porsche Variable Turbine Geometry (VTG) - Performance

Performance

Porsche Variable Turbine Geometry (VTG) - Porsche Doppelkupplung (PDK)

Porsche Doppelkupplung (PDK)

Porsche Variable Turbine Geometry (VTG) - Porsche Traction Management (PTM)

Porsche Traction Management (PTM)

Porsche Variable Turbine Geometry (VTG) - Variable Turbine Geometry (VTG)

Variable Turbine Geometry (VTG)

Porsche Variable Turbine Geometry (VTG) - VarioCam Plus System

VarioCam Plus System

Porsche Variable Turbine Geometry (VTG) - Expansion intake manifold

Expansion intake manifold

Porsche Variable Turbine Geometry (VTG) - Efficiency

Efficiency

Porsche Variable Turbine Geometry (VTG) - Coasting

Coasting

Porsche Variable Turbine Geometry (VTG) - Sport Button

Sport Button

Porsche Variable Turbine Geometry (VTG) - Porsche Torque Vectoring Plus (PTV Plus)

Porsche Torque Vectoring Plus (PTV Plus)

Porsche Variable Turbine Geometry (VTG) - Dynamic engine mounts

Dynamic engine mounts

Porsche Variable Turbine Geometry (VTG) - Identity 911

Identity 911

Porsche Variable Turbine Geometry (VTG) - Exterior

Exterior

Porsche Variable Turbine Geometry (VTG) - Interior

Interior

Porsche Variable Turbine Geometry (VTG) - Engineering 911

Engineering 911

Porsche Variable Turbine Geometry (VTG) - Idea

Idea

Porsche Variable Turbine Geometry (VTG) - Chassis

Chassis

Porsche Variable Turbine Geometry (VTG) - Porsche Active Suspension Management (PASM)

Porsche Active Suspension Management (PASM)

Porsche Variable Turbine Geometry (VTG) - Rear-axle steering

Rear-axle steering

Porsche Variable Turbine Geometry (VTG) - Porsche Dynamic Chassis Control (PDCC)

Porsche Dynamic Chassis Control (PDCC)

Porsche Variable Turbine Geometry (VTG) - Wheels and Tire Pressure Monitoring System (TPMS)

Wheels and Tire Pressure Monitoring System (TPMS)

Porsche Variable Turbine Geometry (VTG) - Porsche Active Aerodynamics (PAA)

Porsche Active Aerodynamics (PAA)

Porsche Variable Turbine Geometry (VTG) - Porsche Stability Management (PSM)

Porsche Stability Management (PSM)

Porsche Variable Turbine Geometry (VTG) - Brakes

Brakes

Porsche Variable Turbine Geometry (VTG) - Engineered body design

Engineered body design

Porsche Variable Turbine Geometry (VTG) - Airbags

Airbags

Porsche Variable Turbine Geometry (VTG) - Interior

Interior

Porsche Variable Turbine Geometry (VTG) - Seats

Seats

Porsche Variable Turbine Geometry (VTG) - SportDesign Steering Wheel

SportDesign Steering Wheel

Porsche Variable Turbine Geometry (VTG) - Assistance Systems

Assistance Systems

Porsche Variable Turbine Geometry (VTG) - Instruments

Instruments

Porsche Variable Turbine Geometry (VTG) - Lights

Lights

Porsche Variable Turbine Geometry (VTG) - Luggage compartment

Luggage compartment

Porsche Variable Turbine Geometry (VTG) - Additional Features

Additional Features

Porsche Variable Turbine Geometry (VTG) - Porsche Communication Management (PCM) including Navigation Module

Porsche Communication Management (PCM) including Navigation Module

Porsche Variable Turbine Geometry (VTG) - BOSE® Surround Sound-System

BOSE® Surround Sound-System

Porsche Variable Turbine Geometry (VTG) - Burmester® High-End Surround Sound-System

Burmester® High-End Surround Sound-System

Porsche Variable Turbine Geometry (VTG) - Glass slide/tilt sunroof

Glass slide/tilt sunroof

Porsche Variable Turbine Geometry (VTG) - Fuel economy and recycling

Fuel economy and recycling

Porsche Variable Turbine Geometry (VTG) - Exhaust emission control

Exhaust emission control

Porsche Variable Turbine Geometry (VTG) - Fuel

Fuel

Porsche Variable Turbine Geometry (VTG) - Noise

Noise