Throttling-pintle nozzle for fuel injection in an internal-combu

Details Throttling-pintle nozzle for fuel injection in an internal-combu Throttling-pintle nozzle for fuel injection in an internal-combu

1984-07-16

1986-05-27

Peters, Jr., Joseph F.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

F02M 6106

Patent

active

045911010

ABSTRACT:
The invention relates to a throttling-pintle nozzle for fuel injection in an internal-combustion engine, with a nozzle needle which lifts off from its needle seat under the pressure of the injected fuel counter to the direction of flow of the fuel. The throttling pintle of which is located within the spray hole in the closing position of the nozzle needle. To prevent an unduly sharp variation in the injection rate from occurring as a result of coking residues in the spray hole, the pintle is provided with a special flattened portion which is arranged obliquely relative to the center axis of the pintle, so that with an increasing stroke of the needle in the opening direction an increase in the passage cross-section represented by an oblique flattened portion takes place.

REFERENCES:
patent: 4275845 (1981-06-01), Muller

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