VALVE FOR METERING A FLUID

WIPO Patent Application WO/2019/137680

A1

A valve (1) for metering a fluid which is used in particular as a fuel injection valve for internal combustion engines, which valve comprises an electromagnetic actuator (2) arranged in a housing (6) and a valve needle (8) which can be actuated by an armature (4) of the actuator (2) and which is used to actuate a valve closing body (9) which interacts with a valve seat face (10) to form a sealing seat (26). The armature (4) is movably guided on the valve needle (8). A stop element (12) connected to the valve needle (8) in conjunction with an actuation of the valve needle (8) limits a relative movement between the armature (4) and the valve needle (8). At least one elastically deformable spacer element (13, 14) is provided between the armature (4) and the stop element (12), which spacer element includes a damping chamber (35) provided between an end face (23) of the armature (4) and a stop element surface (29) of the stop element (12) facing the end face (23) of the armature (4) when the relative movement between the armature (4) and the valve needle (8) on the stop element (12) is limited. A volume (35') of the damping chamber (35) is reduced when the relative movement between the armature (4) and the valve needle (8) on the stop element (12) is limited.

JP2007205276	ENGINE GASEOUS FUEL SUPPLY DEVICE
WO/2018/216102	INJECTOR

STILLING JOACHIM (DE)
SINGH ANISH (TR)
HERRMANN NICO (DE)
RAUSCHENBERGER PHILIPP (DE)
BUEHNER MARTIN (DE)

PCT/EP2018/082311

July 18, 2019

November 23, 2018

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BOSCH GMBH ROBERT (DE)

F02M51/06; F02M61/20

WO2002068811A1

2002-09-06

DE19849210A1	2000-04-27
EP3260695A1	2017-12-27
DE102015217513A1	2017-03-16

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