Injection valve with upstream internal metering

Details Injection valve with upstream internal metering Injection valve with upstream internal metering

1985-03-25

1987-01-06

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

23953312, 239585, F02M 6104

Patent

active

046340556

ABSTRACT:
An injection nozzle for fuel injection systems of internal combustion engines is proposed, the nozzle being arranged to inject fuel into the intake tube of the engine. The injection valve includes a valve housing of ferromagnetic material, in which a tubular connection element which functions as a core and with which an armature is arranged to cooperate. Joined to the valve housing is a nozzle body having a valve seat with which a sealing section of a nozzle needle also is arranged to cooperate. The nozzle needle is guided by a plurality of guide sections in a guide bore of the nozzle body, and metering grooves are embodied on the second guide section disposed upstream of the first guide section. By metering fuel upstream of the valve seat, the fuel metering operation is prevented from being impaired by deposits.

REFERENCES:
patent: 3967597 (1976-07-01), Schlagmuller et al.
patent: 4317542 (1982-03-01), Morishita et al.
patent: 4331317 (1982-05-01), Kamai et al.
patent: 4519547 (1985-05-01), Kubach et al.

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