Injection Nozzles

All engines use Bosch throttling pintle injection nozzles. These provide a pressurized mist of fuel that is injected into a round swirl chamber. Fuel swirls around the chamber mixing with hot air, compressed at 23:1 for non-turbo models or 21:1 for turbo models.

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