Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »HerrDerInge« (8. Februar 2008, 17:18)
Zitat
Original von RobGT
strom am manuellen boostcontroller?
2 manuelle boostcontroller parallel?
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Original von Y.o.g.i
Das sollte so schon funktionieren.
Ist das selbe Prinzip wie ein manueller 2 Stage Boostcontroller.
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Original von Y.o.g.i
Nur was soll das mit den Löchern? Sind die Löcher bereits drin?
Willst Du sie neu bohren?
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Original von Y.o.g.i
Was sind das für MBCs?
Zitat
Alex,
Sorry for the delay in getting back to you, I had to think about this one a bit.
Let me answer the easy question first. The small hole in the elbow side of the controller is there to prevent the boost signal from being trapped between the boost controller and the actuator, when the ball valve closes. It does not affect operation (with the exception I will note below) because the hole is much smaller than the air supply hole into the boost controller. However, I think I know what you are thinking. IF the air supply into the controller were restricted, the small vent hole could theoretically act as a bleed.
So, what you've set up here is a standard 2 channel circuit, as shown in the instructions, with a third channel in parallel with the other two. This third channel is the factory boost control circuit. If the solenoid on the right remains closed (off), then the solenoid on the left controls the high and low (.9 bar) circuits. If this left solenoid is closed, then the level would be 1.2 bar. If it opens, the level is .9 bar.
If all of that is true, then let's move on to the solenoid on the right. If we open that solenoid, then the factory boost control circuit (with its solenoid) would become active. The problem is, the boost control circuit will continue to run, regardless of what you are doing elsewhere. I believe that what would happen would be that when you switched to the .9 bar controller, the boost signal to the wastegate would vent out of the factory boost control solenoid. So, you would end up with the same level as the factory control, instead of a true "low" setting. To remedy this, you would need to put a checkvalve in the line after the "stock" solenoid, that would allow flow TO the wastegate, but not back FROM the other controllers. This would work, at least in theory. Also, the 1.2 bar boost controller must always be set higher than the factory boost level, or the air would follow this path.
Back to the vent holes. Since there is a restrictor in the factory line, it is possible that the two vent holes would provide enough of a "bleed" that the factory level would also be raised, when that circuit is functioning. This could be stopped with two more checkvalves that allow flow from the controller to the wastegate, but not back.
It is hard to say how stable the system would be, because those checkvalves would also limit flow. You might get spikes or oscillation in the boost control. However, you could try it. Get each circuit working independently, then tie the two together. The lowest restriction check valves I know of are the ones you buy in the pet store that block the siphoning action of the air lines in a fish tank. They are usually near the pumps and designed to keep the tank from siphoning onto the floor if the pump shuts off. The downside of these valves is that some of them stick closed if you apply more than .5 bar to them, in the blocked direction.......It is something you will have to try.
Whenever testing an unstable or untested system, it is safest to get into a high gear and then roll into the throttle. If you start off testing this in 1st or 2nd gear, then the boost will build too quickly for you to avoid overboost if something goes awry. So, go slow and start with lower settings. I think it is worth a try! Good luck!
And it was no bother ;-)
Regards,
Darren Dawes
3 Bar Racing Inc.
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »HerrDerInge« (10. Februar 2008, 22:50)
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »HerrDerInge« (18. Februar 2008, 09:39)