What is a vnt?

• In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
• Tap on "Downloads" folder inside the app.
• You should see your downloaded VNT file in that folder.
• Tap on the file.

VNT Turbochargers are commonly used in most diesel passenger cars and vans and also feature in some petrol vehicles.

The VNT stands for Variable Nozzle Turbine, which means that the internal technology of the turbocharger uses variable vanes to control the exhaust flow against the turbine blades.

These types of turbos are also sometimes referred to as Variable-Geometry Turbochargers (as with Holset's VGT Turbos) or Variable-Turbine Geometry Turbochargers (as with Borgwarner's VTG Turbos).

These turbos are highly efficient and very complex, this is because the variable vanes act as a sophisticated Engine Management System used for minimising turbo lag which allows for an increase in throttle responsiveness, particularly at low engine speeds.

This is done by altering the direction and speed in which the gasses impact with the turbine wheel.

This type of technology is used by many turbocharger manufacturers including; BorgWarner, Holset, IHI, Cummins and Mitsibushi but it is most commonly associated Garrett, the world's leading turbocharger manufacturer.

Garrett's method of incorporating "a ring of small movable vanes around the turbine wheel" is featured in millions of passenger cars and vans around the world today.

We have managed to source the high-quality components required to rebuild these intricate units and invested in the latest high spec calibration equipment that is essential in the rebuild of VNT turbos.

As a result, we are, once again, happy to offer our customers Turbo Dynamics rebuilt exchange turbochargers and to extend our popular Cost Of Repair (COR) service to all VNT type turbos including Garrett, BorgWarner, IHI and Mitsubishi starting from £195+VAT.

We at Turbo Dynamics have always prided ourselves on offering the highest level of service with zero compromise to our customers. Using these quality components is not just us being picky, it is essential!

To submit an enquiry about our remanufactured VNT Service, or to speak with one of our experts.

The latest generation VNT delivers benchmark transient response, low-speed efficiency, reliability, weight savings and packaging flexibility.

Engine range Variable Geometry Turbo (VNT) technology, in a mono-turbo set-up, is ideally suited for diesel engines from 0.9L to 3.0L. While the majority of VNT applications are in the 1.4L to 2.0L range, the architecture is also heavily specified in the premium 3.0L V6 diesel segment.

Key Features In a VNT turbo, the exhaust flow through the turbine wheel is controlled by a row of vanes that move to match the exact boost requirements of the engine. At low engine speed, the variable nozzle turbine vanes close to restrict the exhaust air flow through the turbine, thereby increasing turbine power and boost pressure. At higher engine speeds, the moveable vanes open to maximize the exhaust gas flow, thereby avoiding turbo over-speed and maintaining the boost pressure required by the engine.

The current Garrett Variable Geometry (VNT) turbos are upgraded versions of the third generation VNT launched in 2004. The key advance was the ground-breaking way that the variable mechanisms were attached onto the bearing housing through an elastic shroud. This new platform delivered many innovations – a new cartridge design, new cambered vanes, a new generation turbine wheel, improved aerodynamics and better controllability.

GAS VNT Technologies

Key Benefits VNT turbos contribute to higher torque levels, particularly at low engine speed, and help deliver more power across a wider range, better acceleration through improved transient response and cleaner combustion. Lower emissions are made possible by Exhaust Gas Recirculation facilitated by the turbo.

VNT technology is also a key enabler of engine downsizing, an industry-wide trend to create smaller, more fuel-efficient and lower-emitting powertrains that match or exceed the performance of their larger counterparts and enhanced braking capability.

diesel vnt technologies

Evolution and Future Trends Although launched 20 years ago on the 1.9L Fiat Croma, it was in 1995 that VNT, with a new vane design and improved aerodynamics, really came of age when matched to VW-Audi’s 1.9-liter direct injection diesel engine. Second generation VNT, launched three years later, offered greater controllability through new aerodynamics and electric actuation. Then came the 3rd Generation, launched on the BMW One Series with a new cartridge design, cambered vanes, new turbine wheel and improved aerodynamics… all combining to deliver 130 percent of Generation 2 boost at 90 percent of back pressure.

The VNT stands for Variable Nozzle Turbine, which means that the internal technology of the turbocharger uses variable vanes to control the exhaust flow against the turbine blades.