Injection Nozzles

Bosch DNOSD 193 injection nozzles, mounted in KDA SD 27/4 sockets, inject fuel at 2248-2364 psi (158-166 kg/cm² ) for Turbo Diesel models or at 1706-1850 psi (120-130 kg/cm² ) for all other models.

A pressurized mist of fuel is injected into a round swirl chamber. Fuel swirls around the chamber, mixing with hot air that is compressed to a ratio of 23:1. Heat shields protect each injector.

Combustion begins in the rich swirl chamber, continues on through a small passageway, and then into a leaner main chamber. As peak cylinder pressures build in swirl chamber, rather than main chamber, loads on connecting rods and crankshaft are reduced.