NOZZLE BODY FOR A FLUID INJECTOR AND FLUID INJECTOR

A nozzle body (1) for a fluid injector (30) comprises a nozzle wall (3), an opening (5), a longitudinal axis (L) and a fluid inlet end (21) as well as a fluid outlet end (22). The nozzle body (1) further comprises a needle seat (7) and a flow hole (17) which penetrates the nozzle wall (3) in the region of the fluid outlet end (22) from the opening (5) to outside of the nozzle body (1). A sac volume portion (9) of the nozzle wall (3) is formed between the needle seat (7) and the flow hole (17) with respect to the longitudinal axis (L) and limits a cavity (10) to generate a stagnating flow area for a streaming fluid.