Pressure drop across turbocharger turbine section.

[dbecker]

I need a way to calculate what the pressure drop across a typical automotive turbocharger turbine section is.

For example, dont assume exhaust gas at 1400F as the working fluid. Just assume analytically, P1, T1 entering the turbine and P2, T2 exiting (air) what would be a good rough estimate for pressure drop.

I dont have the turbine map for this specific turbo I am using. For a typical turbocharger, say T3-45 trim; what would be the pressure ratio and efficiency of the turbine?

Any links would be appreciated.


- D

 

[SomptingGuy]

It varies with mass flow and turbine speed. Manufacturers provide maps of this.

- Steve

 

[Warpspeed]

It also depends if the selected area ratio of the turbine housing is operating near optimum at the desired flow rate.