JPH0430459U - - Google Patents

Info

Publication number
JPH0430459U
JPH0430459U JP7150390U JP7150390U JPH0430459U JP H0430459 U JPH0430459 U JP H0430459U JP 7150390 U JP7150390 U JP 7150390U JP 7150390 U JP7150390 U JP 7150390U JP H0430459 U JPH0430459 U JP H0430459U
Authority
JP
Japan
Prior art keywords
oil pressure
exhaust valve
crank angle
cylinder
converts
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.)
Granted
Application number
JP7150390U
Other languages
English (en)
Other versions
JPH0749403Y2 (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 JP7150390U priority Critical patent/JPH0749403Y2/ja
Publication of JPH0430459U publication Critical patent/JPH0430459U/ja
Application granted granted Critical
Publication of JPH0749403Y2 publication Critical patent/JPH0749403Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Testing Of Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Description

【図面の簡単な説明】
第1〜第3図は本考案に係るもので第1図は第
1実施例の全体構成図、第2図は駆動油圧と開閉
弁タイミングの関係図、第3図は実施例のフロー
チヤート、第4図は従来形排気弁の故障診断装置
で描かれた指圧線図である。 1……機関本体、4a〜4e……油圧センサ、
5……T,D,Cセンサ、6……圧力変換器、7
……パルス変換器、8……変換器、9……演算器
、10……データ比較器。

Claims (1)

    【実用新案登録請求の範囲】
  1. 各排気弁駆動用油圧シリンダの駆動油圧を計測
    する油圧センサと、クランク角の基準位置を検出
    するクランク角センサと、排気弁駆動油圧曲線の
    特定仕切油圧Pvとなる点の排気弁開閉タイミン
    グをバルス信号に変換するパルス変換器と、クラ
    ンク角センサの出力をパルス信号に変換するパル
    ス変換器と、前記両変換器よりのパルスを基とし
    て開閉タイミングを算出する演算器と、各シリン
    ダ毎に計測算出された開閉タイミングを各シリン
    ダ間及び基準データと比較する比較器とを有して
    なる油圧駆動式排気弁の故障診断装置。
JP7150390U 1990-07-06 1990-07-06 油圧駆動式排気弁の故障診断装置 Expired - Lifetime JPH0749403Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7150390U JPH0749403Y2 (ja) 1990-07-06 1990-07-06 油圧駆動式排気弁の故障診断装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7150390U JPH0749403Y2 (ja) 1990-07-06 1990-07-06 油圧駆動式排気弁の故障診断装置

Publications (2)

Publication Number Publication Date
JPH0430459U true JPH0430459U (ja) 1992-03-11
JPH0749403Y2 JPH0749403Y2 (ja) 1995-11-13

Family

ID=31608592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7150390U Expired - Lifetime JPH0749403Y2 (ja) 1990-07-06 1990-07-06 油圧駆動式排気弁の故障診断装置

Country Status (1)

Country Link
JP (1) JPH0749403Y2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009068489A (ja) * 2007-09-11 2009-04-02 Robert Bosch Gmbh 内燃機関の電気油圧式弁制御の作動方法および内燃機関の電気油圧式弁制御システム
JP2013072303A (ja) * 2011-09-27 2013-04-22 Hino Motors Ltd 油圧式可変バルブ装置の異常診断装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009068489A (ja) * 2007-09-11 2009-04-02 Robert Bosch Gmbh 内燃機関の電気油圧式弁制御の作動方法および内燃機関の電気油圧式弁制御システム
JP2013072303A (ja) * 2011-09-27 2013-04-22 Hino Motors Ltd 油圧式可変バルブ装置の異常診断装置

Also Published As

Publication number Publication date
JPH0749403Y2 (ja) 1995-11-13

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term