JPS646540U - - Google Patents

Info

Publication number
JPS646540U
JPS646540U JP9942487U JP9942487U JPS646540U JP S646540 U JPS646540 U JP S646540U JP 9942487 U JP9942487 U JP 9942487U JP 9942487 U JP9942487 U JP 9942487U JP S646540 U JPS646540 U JP S646540U
Authority
JP
Japan
Prior art keywords
exhaust valve
sensor
seating
leakage
position detection
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
JP9942487U
Other languages
English (en)
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 JP9942487U priority Critical patent/JPS646540U/ja
Publication of JPS646540U publication Critical patent/JPS646540U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

【図面の簡単な説明】
第1〜3図は本考案に係るもので、第1図は構
造図、第2図は信号波形の表示図、第3図は漏え
い量とセンサ出力の関係線図、第4〜5図は従来
例で、第4図は構造説明図、第5図は作用説明図
である。 104……排気弁、105……弁座、108…
…音響センサ、109……位置検出装置、110
……音響処理装置、111……演算装置、112
……表示装置。

Claims (1)

    【実用新案登録請求の範囲】
  1. デイーゼル機関の排気弁104の弁座105付
    近に取付けた音響センサ108と、排気弁の着座
    を検出する位置検出装置109と、該位置検出装
    置の出力と前記音響センサのセンサ波形から排気
    弁の着座時のみの波形を作る音響処理装置110
    と、該音響処理装置110で作られたセンサ出力
    から漏えい量を算出する演算装置111と、漏え
    い量又は排気弁が正常か異常かを表示する表示装
    置112とを有してなる排気弁故障診断装置。
JP9942487U 1987-06-30 1987-06-30 Pending JPS646540U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9942487U JPS646540U (ja) 1987-06-30 1987-06-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9942487U JPS646540U (ja) 1987-06-30 1987-06-30

Publications (1)

Publication Number Publication Date
JPS646540U true JPS646540U (ja) 1989-01-13

Family

ID=31326570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9942487U Pending JPS646540U (ja) 1987-06-30 1987-06-30

Country Status (1)

Country Link
JP (1) JPS646540U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7310563B2 (en) 1993-07-15 2007-12-18 Renesas Technology Corp. Fabrication system and fabrication method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818141A (ja) * 1981-07-25 1983-02-02 Hitachi Zosen Corp 内燃機関の排気弁吹き抜け検出方法およびその装置
JPS59176643A (ja) * 1983-03-25 1984-10-06 Mitsubishi Heavy Ind Ltd 弁微少リ−ク量測定装置
JPS61243359A (ja) * 1985-04-19 1986-10-29 Ishikawajima Harima Heavy Ind Co Ltd 内燃機関の弁の吹き抜け監視装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818141A (ja) * 1981-07-25 1983-02-02 Hitachi Zosen Corp 内燃機関の排気弁吹き抜け検出方法およびその装置
JPS59176643A (ja) * 1983-03-25 1984-10-06 Mitsubishi Heavy Ind Ltd 弁微少リ−ク量測定装置
JPS61243359A (ja) * 1985-04-19 1986-10-29 Ishikawajima Harima Heavy Ind Co Ltd 内燃機関の弁の吹き抜け監視装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7310563B2 (en) 1993-07-15 2007-12-18 Renesas Technology Corp. Fabrication system and fabrication method
US7392106B2 (en) 1993-07-15 2008-06-24 Renesas Technology Corp. Fabrication system and fabrication method
US7603194B2 (en) 1993-07-15 2009-10-13 Renesas Technology Corp. Fabrication system and fabrication method

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