Is there a way to plumb a TIAL turbocharger wastegate controller to be automatic for the control of MAP during the climb?
Perhaps I chose the wrong method of plumbing my wastegate hoses as I am using a "two port" controller when I should be using something different like a "three port" system??? (see PDF).
Of course all of the information on the web is automobile engine focuses and they keep talking about boost values that over/under/creep/etc but I need to understand what happens at a constant throttle (WOT) when increasing in pressure altitude so I was hoping some airplane people can explain this to me...
The engine system is as follows:
-Lycoming TIO-540 with 7.3:1 compression pistons
-Single automotive type turbocharger
-Comp Turbo Technology CT3693S
-Wheel specs are 62/75
-Oil lubricated
-2.0 CT40
-1.52 Aspect Ratio
-T4 Inlet Twin scroll
-TIAL V60 Wastegate with GREEN 4.34 PSI Spring
-TurboSmart Dual Stage Boost Controller TS-0105
The wastegate air lines are currently plumbed up as indicated in the top picture of the attached PDF. The wastegate boost controller is installed in the engine compartment so I did not step out and fiddle with the knobs in flight...the only reason why I installed the dual stage boost controller is sometimes I might run MOGAS and I want the controller to limit my MAP to reduce the Effective Compression Ratio to 10:1 during these times with a flip of the switch.
Here are the WOT altitude verses MAP readings I get with the dual stage controller operating on the "high boost" setting (the low boost setting right now drops it about 1 inch HG):
MSL MAP
2200 39.1
3000 38.3
4000 37.4
5000 36.2
6000 35.5
7000 35.0
8000 33.0
9000 32.1
10000 31.4
11000 30.3
So it is kinda like a 1 inch HG drop per 1000 feet so the current boost controller system is being affected by change in pressure altitude so I need some kind of closed loop system....
Any help or advice would be appreciated!!!
Perhaps I chose the wrong method of plumbing my wastegate hoses as I am using a "two port" controller when I should be using something different like a "three port" system??? (see PDF).
Of course all of the information on the web is automobile engine focuses and they keep talking about boost values that over/under/creep/etc but I need to understand what happens at a constant throttle (WOT) when increasing in pressure altitude so I was hoping some airplane people can explain this to me...
The engine system is as follows:
-Lycoming TIO-540 with 7.3:1 compression pistons
-Single automotive type turbocharger
-Comp Turbo Technology CT3693S
-Wheel specs are 62/75
-Oil lubricated
-2.0 CT40
-1.52 Aspect Ratio
-T4 Inlet Twin scroll
-TIAL V60 Wastegate with GREEN 4.34 PSI Spring
-TurboSmart Dual Stage Boost Controller TS-0105
The wastegate air lines are currently plumbed up as indicated in the top picture of the attached PDF. The wastegate boost controller is installed in the engine compartment so I did not step out and fiddle with the knobs in flight...the only reason why I installed the dual stage boost controller is sometimes I might run MOGAS and I want the controller to limit my MAP to reduce the Effective Compression Ratio to 10:1 during these times with a flip of the switch.
Here are the WOT altitude verses MAP readings I get with the dual stage controller operating on the "high boost" setting (the low boost setting right now drops it about 1 inch HG):
MSL MAP
2200 39.1
3000 38.3
4000 37.4
5000 36.2
6000 35.5
7000 35.0
8000 33.0
9000 32.1
10000 31.4
11000 30.3
So it is kinda like a 1 inch HG drop per 1000 feet so the current boost controller system is being affected by change in pressure altitude so I need some kind of closed loop system....
Any help or advice would be appreciated!!!