See Coatalen.

At the 1936 Paris Aero Show he presented this 12V Diesel engine.

-It displaced 36 liters with a double camshaft on the cylinder head. At the rear we see the two injection pumps, one for each block.

-It has a centrifugal supercharger that rotated at ten times the speed of the crankshaft.

“Louis Coatalen”