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-   -   Diesel/Jet A using two or three turbo setup (https://www.rx7club.com/new-member-rx-7-technical-256/diesel-jet-using-two-three-turbo-setup-1098067/)

kck123 03-26-16 01:02 AM

Diesel/Jet A using two or three turbo setup
 
I am wondering if anyone here has done this? I have read scattered posts about some successes on 13B's using high boost number like 18 to 20 pounds of boost. Member PDF said that his buddies biggest problem was getting it started when it was cold. After that it ran just like normal. I have read as much as I could find on this. The John Deere/ Curtiss Wright years, FMC, Barger, Rolls Royce. Army combustion analysis and design studies using various rotor designs, stratified charges, preheating the fuels.
I am hoping that the science and materials are here to make this happen. Any help on any of this would be greatly appreciated.

Evil Aviator 03-27-16 01:44 AM

I think you are going to need a compression ratio of at least 14:1, which would require modifying and rebalancing the rotors.

I assume that you are a member of SAE. Search for SAE papers by Nikolay and Alexander Shkolnik to see if they have published any modern information on diesel rotary engines.

kck123 03-27-16 04:52 AM

Those are the Liquidpiston guys right? I will take a look for that. I was planning on starting using the army method which is a cummins type intake air superheater (essentially a heatgun). Then let the spark plugs keep it going until the boost hits about 15psi. At that point the dynamic compression ratio boosted would be coming up on 14:1. What about starting with a renesis as the base motor? I haven't got a definite number yet but I have read in a few places that it is over 10:1? Can you confirm that?


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