This motor is doomed... dirty exhaust gases exiting through part of the rotor? Only a matter of time before carbon+sludge builds up and the thing is out of balance.
This is one of those designs that works fine initially when everything is fresh.
Diesel piston engines work fine when everything is worn out and full of goo.
The exhaust gas recirculation valve on a modern diesel engine does exactly this. It diverts a portion of the exhaust product back into the intake manifold of the engine to achieve more complete combustion and lower emissions.
Yes, it does result in a buildup of goo in the intake. No, the engine does not run well in that state. That’s what maintenance is for. Clean out the goo every 50,000km or so and it’s fine.
Modern diesels are very reliable machines, just like modern petrol engines. They’re certainly not the robust rocks they used to be, though. High pressure common rail fuel systems, precision injectors and multi stage turbos are standard issue these days and they all require regular maintenance, clean air and clean fuel to operate properly.
> The exhaust gas recirculation valve on a modern diesel engine does exactly this
Anyone who thinks the EGR valve should be made part of the rotating assembly requiring a complete overhaul to clean out, unbalancing the assembly until that occurs, needs their head examined.
This is one of those designs that works fine initially when everything is fresh.
Diesel piston engines work fine when everything is worn out and full of goo.