Injection nozzle function - GF07.03-P-3152-01H

Fig 1: Identifying Nozzle Needle, Throttling Pintle And Pintle

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The injection orifices in the nozzle body produce a cone-shaped spray of finely atomized particles.

The oblique surface at the throttling pintle (50/4) combined with the small diameter of the nozzle needle serve to improve the throttling effect in the idling range.