Attention engineers!
I'm starting a community project. I have a T4 to T6 adapter plate installed before my T6 split turbine housing. The plan is to modify the adapter plate to include a flapper valve that will close off one section entrance to the split turbine housing. The idea is to force exhaust gases to use half the available area of the turbine housing to vent exhaust gases to the turbine wheel. This will increase exhaust flow velocity and hopefully lessen spool time. This is not a new idea, and it's pretty much, already been proven to work rather well.
The T4 to T6 adapter is not split, so the first mission will be to install a dividing wall to the adapter to match the dividing wall of the split turbine housing.
The next decision will be, what side of the split turbine housing to close off?
I'm thinking leaving open the side that will allow the longest contact of exhaust gases to the turbine wheel. Furthest away from the exit of the turbine housing.
Then material questions:
Material for the flapper valve? Thickness?
Material for the flapper valve shaft? Diameter?
Material for the flapper valve shaft bushings? Shaft to bushing clearance?
Other questions:
How to retain the flapper valve to the shaft?
Which direction to have the flapper valve close? The angle when closed?
Control mechanism? Method to close? Method to open?
I'm thinking CO2 cylinder to open and a simple return spring to close. Maybe control pressure could come from the wastegate system or simply be manifold pressure?
I'm starting a community project. I have a T4 to T6 adapter plate installed before my T6 split turbine housing. The plan is to modify the adapter plate to include a flapper valve that will close off one section entrance to the split turbine housing. The idea is to force exhaust gases to use half the available area of the turbine housing to vent exhaust gases to the turbine wheel. This will increase exhaust flow velocity and hopefully lessen spool time. This is not a new idea, and it's pretty much, already been proven to work rather well.
The T4 to T6 adapter is not split, so the first mission will be to install a dividing wall to the adapter to match the dividing wall of the split turbine housing.
The next decision will be, what side of the split turbine housing to close off?
I'm thinking leaving open the side that will allow the longest contact of exhaust gases to the turbine wheel. Furthest away from the exit of the turbine housing.
Then material questions:
Material for the flapper valve? Thickness?
Material for the flapper valve shaft? Diameter?
Material for the flapper valve shaft bushings? Shaft to bushing clearance?
Other questions:
How to retain the flapper valve to the shaft?
Which direction to have the flapper valve close? The angle when closed?
Control mechanism? Method to close? Method to open?
I'm thinking CO2 cylinder to open and a simple return spring to close. Maybe control pressure could come from the wastegate system or simply be manifold pressure?