Patent ID: 6929195

Claim:
A fuel injector comprising: a main body having a fuel input and a fuel output and defining a fuel passageway between said fuel input and said fuel output; a swirl generator associated with said fuel output to generate fuel swirl; a swirl regulator to operate the swirl generator, wherein the swirl regulator includes an upper housing that is mounted to said main body; a lower housing including a center aperture; a center shaft rotatably disposed in the center aperature and connected to the swirl generator, wherein said upper housing, said lower housing, and said center shaft cooperatively define a plurality of cavities communicating with said fuel passageway; a plurality of vanes coupled to the center shaft and disposed within said cavities and being rotatable in response to fuel pressure in said fuel passageway acting on said vanes; and a biasing member acting on said center shaft in opposition to the fuel pressure.