JPH0448478U - - Google Patents

Info

Publication number
JPH0448478U
JPH0448478U JP8944990U JP8944990U JPH0448478U JP H0448478 U JPH0448478 U JP H0448478U JP 8944990 U JP8944990 U JP 8944990U JP 8944990 U JP8944990 U JP 8944990U JP H0448478 U JPH0448478 U JP H0448478U
Authority
JP
Japan
Prior art keywords
valve
spring
piezoelectric element
state
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8944990U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8944990U priority Critical patent/JPH0448478U/ja
Publication of JPH0448478U publication Critical patent/JPH0448478U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Indication Of The Valve Opening Or Closing Status (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例に係る弁装置の断面
図、第２図は針弁の移動状態と圧電素子の電荷の
発生状況との関係を示すグラフ、第３図は従来の
弁装置を備えた燃料噴射装置の断面図である。 図面中、７はノズルホルダ、８は針弁、１１は
ばね、１２は噴射ノズル、４１は圧電素子である
。 Fig. 1 is a sectional view of a valve device according to an embodiment of the present invention, Fig. 2 is a graph showing the relationship between the movement state of the needle valve and the electric charge generation state of the piezoelectric element, and Fig. 3 is a conventional valve device. 1 is a cross-sectional view of a fuel injection device equipped with a In the drawing, 7 is a nozzle holder, 8 is a needle valve, 11 is a spring, 12 is an injection nozzle, and 41 is a piezoelectric element.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ばねによつて一方向に付勢される弁と、前記ば
ねの歪を検知して前記弁の移動状態を検出する圧
電素子とを備えたことを特徴とする弁装置。 A valve device comprising: a valve biased in one direction by a spring; and a piezoelectric element that detects the strain of the spring to detect the state of movement of the valve.
JP8944990U 1990-08-29 1990-08-29 Pending JPH0448478U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8944990U JPH0448478U (en) 1990-08-29 1990-08-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8944990U JPH0448478U (en) 1990-08-29 1990-08-29

Publications (1)

Publication Number Publication Date
JPH0448478U true JPH0448478U (en) 1992-04-24

Family

ID=31823436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8944990U Pending JPH0448478U (en) 1990-08-29 1990-08-29

Country Status (1)

Country Link
JP (1) JPH0448478U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517556A (en) * 2009-02-10 2012-08-02 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Method for detecting needle valve closure in a piezo injector
JP2013068308A (en) * 2011-09-26 2013-04-18 Hitachi Automotive Systems Ltd Hydraulic control valve, and device for detecting operating condition of spool valve element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517556A (en) * 2009-02-10 2012-08-02 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Method for detecting needle valve closure in a piezo injector
JP2013068308A (en) * 2011-09-26 2013-04-18 Hitachi Automotive Systems Ltd Hydraulic control valve, and device for detecting operating condition of spool valve element

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