Week-6 : Turbocharger Modelling
Objective:
- List down different TC and locate examples from GT Power
- Explore tutorial number 6 and 7
- Plot operating points on compressor and turbine maps
- In which application Variable Geometry Turbine is beneficial?
- Explore example- Diesel VGT EGR and understand the modeling part
List of different Turbo-chargers :
- Single-Turbo
- Twin-Turbo
- Variable Geometry Turbo
Examples from GT-POWER
1. Turbocharger with Power turbine
2. Variable geometry Turbo-charger
3. Waste-gate Turbocharger:
Exploring Tutorial 6
Exploring Tutorial 7
Case setup:
Result:
Performance:
Compressor Map :
Turbine Map
When is VGT beneficial?
This is one of the most exceptional forms of turbocharging, VGTs are limited in production (though fairly common in diesel engines) as a result of cost and exotic material requirements. Hence, only high-performance end automobiles use this turbo-charger like for gasoline applications, cost typically keeps them out as exotic metals have to be used in order to maintain reliability.
It is quite effective for a wide RPM range gives a wide, flat torque curve and a single turbo can be used cutting the weight and making it compact.
Diesel VGT EGR :
Compressor Definition:
VGT Definition:
VGT Rack Contol:
