Cummins/Tula dDSF (diesel Dynamic Skip Fire)

Definitely cool tech! Fuel injection in gas engines has been doing this for 20 years, where the the PCM varies injector pulse width based on power required. Longer injector open time = more fuel delivered into the cylinder. The fuel pump operates at a constant flow, and whatever fuel isn't used by the engine gets returned to the tank via the return line. Now some mfrs are using variable-speed fuel pumps to eliminate the return line to the tank.

Hopefully this technology in a diesel application will deliver good emissions performance without the EGR and other problematic components.