Did you guys know Pratt and Whitney is working on rotary engines?? There are lots of recent (2010-2018) patents related to or mentioning wankel rotary engines.

They have patents for rotors, apex seals, intake and exhaust ports, direct injection with pilot chamber, compound setups (turbine connected to eccentric shaft), you name it! I just found out about it.

P&W Wankel Engine Google Patents

 

multi orifice oil injection
look familiar??
double apexes!
direct injection spray pattern
2-rotor turbocharged with axial turbine compound setup
4-rotor turbocharged with center axial turbine compound setup
4-rotor with opposing side ports and spark plugs

 

I would assume its related to this:

http://www.pw.utc.com/Press/Story/20...l%20Categories
https://www.nextbigfuture.com/2010/1...prototype.html

 

They must be related although the patents are from P&W Canada, and the links you posted reference P&W Rocketdyne in California.