Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – Fuel injector or burner
Patent
1981-02-25
1982-11-16
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Fluid pressure responsive discharge modifier* or flow...
Fuel injector or burner
2395339, F02M 4508
Patent
active
043591914
ABSTRACT:
A fuel injection valve including a first nozzle spring and a second nozzle spring provided in its nozzle holder, wherein fuel injection is carried out in such a double-step manner that lifting of the nozzle needle through the initial injection stroke causes contraction of the first nozzle spring and subsequent lifting of the nozzle needle through the main injection stroke causes contraction of the second nozzle spring as well as the first nozzle spring. The first nozzle spring is supported by a first movable spring seat coupled to the nozzle needle, and the second nozzle spring by a second movable spring seat which engages a lift adjusting threaded member rotatably threadedly mounted in the nozzle holder for axial displacement relative to the nozzle holder, respectively. Axial rotative displacement of the lift adjusting threaded member causes corresponding axial displacement of the second movable spring seat through the second nozzle spring, whereby the gap between the first nozzle spring and the second nozzle spring can be adjusted within a range of between zero and a predetermined value determining the initial injection lift of the nozzle needle. Setting of the main injection valve opening pressure of the nozzle needle can be effected with facility by rotating the lift adjusting threaded member to make the above gap zero and then adjusting the setting load of the second nozzle spring so as to obtain a value of the sum of the setting loads of the first and second nozzle springs corresponding to a desired valve opening pressure value.
REFERENCES:
patent: 2921746 (1960-01-01), Burman
Diesel Kiki Co. Ltd.
Kashnikow Andres
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