jgarciarivera
06-24-2007, 02:31 AM
Hey, guys
If possible I want some opinions in these setup. Feel free to add suggestions or comments.
I'll appreciate all the help.
Best Regards
Jose
Firstly transition between the separate systems will be easiest operated buy a solenoid activated pressure actuator.
Using a combination of two linked throttle bodies after the compressors, this will enable one system to close while the other opens at the same time and vice versa.
Boost produced by either system while not the working system will need to be vented via a CBV. (bypass valve)
The transition will need to be rpm based. You don’t want to the supercharger kicking it at 6000rpm when boost drops from the turbo.
Some schematics:
Supercharger - stage 1
http://a65.ac-images.myspacecdn.com/images01/37/l_8d9b6a93f9f6c6fc5ef9b3a763e1b6e0.jpg
Looking at the pics... Green is the working charge system, cyan is the bypassing system.
In stage 1, throttle body 1 is open, TB2 is closed. This is the standard config as such. For this example we can say you want to switch systems @ 3000rpm. Until this point the supercharger will be producing the set driven boost(this pressure can be used to control the twin throttles). Until this point any boost being built by the turbo will be recirculated via the CBV.
Turbo - stage 2
http://a978.ac-images.myspacecdn.com/images01/56/l_674719c8ef36e41a0ad5e5241d994ec1.jpg
At the transition.. a solenoid opens the pressure to the twin tb's and TB1 closes/TB2 opens and we enter stage 2. The supercharger can be switched off at anything after 3000rpm say 3200rpm and until that point the excess boost is recirculated via it own CBV.
Its pretty simple and hopefully should provide a smooth transition as long as the transition is set at the right point. Other than that is just a matter of setting up the CBV's to work at the right stages.
I forgot to mention the supercharger here is a procharger centrifugal supercharger.
If possible I want some opinions in these setup. Feel free to add suggestions or comments.
I'll appreciate all the help.
Best Regards
Jose
Firstly transition between the separate systems will be easiest operated buy a solenoid activated pressure actuator.
Using a combination of two linked throttle bodies after the compressors, this will enable one system to close while the other opens at the same time and vice versa.
Boost produced by either system while not the working system will need to be vented via a CBV. (bypass valve)
The transition will need to be rpm based. You don’t want to the supercharger kicking it at 6000rpm when boost drops from the turbo.
Some schematics:
Supercharger - stage 1
http://a65.ac-images.myspacecdn.com/images01/37/l_8d9b6a93f9f6c6fc5ef9b3a763e1b6e0.jpg
Looking at the pics... Green is the working charge system, cyan is the bypassing system.
In stage 1, throttle body 1 is open, TB2 is closed. This is the standard config as such. For this example we can say you want to switch systems @ 3000rpm. Until this point the supercharger will be producing the set driven boost(this pressure can be used to control the twin throttles). Until this point any boost being built by the turbo will be recirculated via the CBV.
Turbo - stage 2
http://a978.ac-images.myspacecdn.com/images01/56/l_674719c8ef36e41a0ad5e5241d994ec1.jpg
At the transition.. a solenoid opens the pressure to the twin tb's and TB1 closes/TB2 opens and we enter stage 2. The supercharger can be switched off at anything after 3000rpm say 3200rpm and until that point the excess boost is recirculated via it own CBV.
Its pretty simple and hopefully should provide a smooth transition as long as the transition is set at the right point. Other than that is just a matter of setting up the CBV's to work at the right stages.
I forgot to mention the supercharger here is a procharger centrifugal supercharger.