Fuel injection valve

Internal-combustion engines – Charge forming device – Fuel injection system

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Details

123531, 123585, 123452, F02M 3900

Patent

active

045453543

ABSTRACT:
A fuel injection valve which serves to inject fuel in an internal combustion engine. The fuel injection valve includes a nozzle holder in which a nozzle body having an injection port is disposed. The injection port is opened by a closing body movable counter to the force of a closing spring in order to eject fuel. A gas guidance sheath encompasses the nozzle holder with a cylindrical portion and the nozzle body with a bottom portion and has at least one axially extending gas guidance conduit communicating with an air source. The gas guidance conduit leads to a gas ring conduit in the bottom portion. The nozzle step protrudes through the bottom portion and with the passageway opening thereof forms a throttling gas ring gap immediately above the injection port, so that fuel emerging from the injection port can immediately be enveloped by gas, such as air or exhaust gas, and thereby prepared.

REFERENCES:
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patent: 4174511 (1979-11-01), Knapp
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patent: 4216757 (1980-08-01), Romann
patent: 4227501 (1980-10-01), Knapp et al.
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patent: 4351304 (1982-09-01), Schweizer
patent: 4354470 (1982-10-01), Miyaki
patent: 4361126 (1982-10-01), Knapp
patent: 4364362 (1982-12-01), Wissmann et al.
patent: 4370967 (1983-02-01), Gmelin et al.
patent: 4383513 (1983-05-01), Gmelin et al.
patent: 4428356 (1984-01-01), Kemmner
patent: 4434766 (1984-03-01), Matsuoka
Bosch Technical Instruction for Continuous Injection System Publication dated Feb. 1974.

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