Air shroud for air assist fuel injector

Details Air shroud for air assist fuel injector Air shroud for air assist fuel injector

1998-04-23

2000-04-04

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Processes

Of fuel injection

239409, 2395851, F02D 106

Patent

active

060450541

ABSTRACT:
A fuel injector for a spark ignition internal combustion engine includes a fuel injector having inlet and discharge ends. The discharge end includes a fuel injection port for supplying a fuel stream directed along an axis. An air shroud supplies assist air. The air shroud includes a first end mountable over the injector discharge end. The air shroud also includes a second end having an air assist passageway coaxially aligned with the fuel injection port for directing the fuel stream through the passageway along a common axis and guiding a flow of assist air through the passageway. The air flowing through the passageway coaxially surrounds the fuel stream to mix with the fuel upon discharge from the passageway, thereby providing a precisely targeted atomized fuel spray.

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