Fuel injector that swirls and throttles the flow to create to a

Details Fuel injector that swirls and throttles the flow to create to a Fuel injector that swirls and throttles the flow to create to a

1991-12-10

1992-12-15

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

239497, 25112922, 251205, F02M 5106, F02M 6113

Patent

active

051709457

ABSTRACT:
The fuel injector has several swirl passages in a fuel swirl and needle guide member that direct swirl fuel onto the frusto-conical surface of a valve seat member that is disposed at the injector's nozzle end. The needle lift is such that with the needle unseated to open the injector to flow, the swirl fuel is throttled as it passes between the rounded tip end of the open needle and the frusto-conical surface of the seat member. The throttling tends to spread the swirl flow so that it is more uniform in the circumferential sense. If the injector is closed before equilibrium flow occurs, a toroidal shaped fuel cloud is created; if the injector is closed after equilibrium flow occurs, an ellipsoidal shaped fuel cloud is created.

REFERENCES:
patent: 4564145 (1986-01-01), Takada et al.
patent: 4805837 (1989-02-01), Brooks et al.
patent: 4877187 (1989-10-01), Daly
patent: 4887769 (1989-12-01), Okamoto et al.
patent: 4971254 (1990-11-01), Daly et al.

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