EP 2694795 B1 20150701 - FUEL INJECTOR
Title (en)
FUEL INJECTOR
Title (de)
KRAFTSTOFFINJEKTOR
Title (fr)
INJECTEUR DE CARBURANT
Publication
Application
Priority
- DE 102011006975 A 20110407
- DE 102011078953 A 20110711
- EP 2012056286 W 20120405
Abstract (en)
[origin: WO2012136406A1] The invention relates to a fuel injector for a fuel injection system, in particular a common rail injection system, comprising a jet needle (2) which is guided in a stroke-movable manner in a high-pressure bore (1) of the fuel injector, wherein an injection opening (3) can be opened and closed via the stroke movement of said jet needle, and a fuel or pressure sensor (4) having at least one sensor element (5) made of a piezo electrical material for detecting characteristic pressure changes during opening and closing of the jet needle (2). According to the invention, the fuel or pressure sensor (4) is arranged in a low pressure region (6) of the fuel injector and can be loaded directly or indirectly by an axial force (FA) upon opening and closing of the jet needle (2), which is proportional to the control chamber pressure in a control chamber (7). The sensor element (5) of the force or pressure sensor (4) is furthermore directly or indirectly electrically connected to a housing part (12) of the fuel injector via at least one contact surface (9) or an electrode (10) designed thereupon, in order to produce a ground connection (11).
IPC 8 full level
F02M 47/02 (2006.01); F02M 57/00 (2006.01)
CPC (source: EP US)
F02M 47/027 (2013.01 - EP US); F02M 57/005 (2013.01 - EP US); F02M 2200/244 (2013.01 - EP US); F02M 2200/247 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102011078947 A1 20121011; CN 103459820 A 20131218; CN 103459820 B 20170215; CN 103477063 A 20131225; CN 103477063 B 20180313; DE 102011078953 A1 20121011; EP 2694794 A1 20140212; EP 2694794 B1 20190424; EP 2694795 A1 20140212; EP 2694795 B1 20150701; JP 2014510233 A 20140424; JP 6265884 B2 20180124; US 2014027534 A1 20140130; WO 2012136406 A1 20121011; WO 2012136767 A1 20121011
DOCDB simple family (application)
DE 102011078947 A 20110711; CN 201280016209 A 20120405; CN 201280016215 A 20120222; DE 102011078953 A 20110711; EP 12706532 A 20120222; EP 12714655 A 20120405; EP 2012052990 W 20120222; EP 2012056286 W 20120405; JP 2014503040 A 20120222; US 201214110411 A 20120222