Fuel injector with air atomization

Details Fuel injector with air atomization Fuel injector with air atomization

1996-10-24

1998-01-27

Kamen, Noah P.

Internal-combustion engines

Charge forming device

Auxiliary air or gas used to inject fuel

239415, F02M 2300

Patent

active

057112819

ABSTRACT:
An air assist atomizer is used for obtaining a desired air flow through a fuel injector, the fuel injector having an injector valve stem, and the injector valve stem movable over a displacement. The air assist atomizer has an air passage via which atomizing air enters and a fuel passage via which atomized fuel exits. An injector seat is mounted on a spring for holding the injector seat to the injector valve stem over the displacement. The injector seat is allowed to travel part of the displacement of the injector valve stem, whereby when the injector seat moves, the air passage is opened allowing bypass air to atomize the fuel. A mechanical stop is provided for halting movement of the injector seat, while the injector valve stem moves the remaining distance of the displacement, opening up the fuel passage.

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