Week-6 : Turbocharger Modelling

1) Differeent types of turbo-chargers?

a)Single-Turbo

b) Twin-Turbo

c)Twin-Scroll Turbo

d)Variable Geometry Turbo

e)Variable Twin Scroll Turbo

F)Electric Turbo

4)Applications of Variable geometry Turbine and its benifits

A)No throttling loss of the wastegate valve

B)Higher air–fuel ratio and higher peak torque at low engine speeds

C)Improved vehicle accelerations without the need to resort to turbines with high pumping loss at high engine speeds

D)Potential for lower engine ΔP (the difference between exhaust manifold and intake manifold pressures)

E)Control over engine ΔP that can be used to drive EGR flow in diesel engines with High Pressure Loop (HPL) EGR systems

F)A better ability to cover a wider region of low BSFC in the engine speed–load domain

G)Ability to provide engine braking

H)Ability to raise exhaust temperature for aftertreatment system management