JPS6473233A - Checking of liquid leakage for hydraulic circuit - Google Patents

Checking of liquid leakage for hydraulic circuit

Info

Publication number
JPS6473233A
JPS6473233A JP23049687A JP23049687A JPS6473233A JP S6473233 A JPS6473233 A JP S6473233A JP 23049687 A JP23049687 A JP 23049687A JP 23049687 A JP23049687 A JP 23049687A JP S6473233 A JPS6473233 A JP S6473233A
Authority
JP
Japan
Prior art keywords
time
liquid leakage
liquid
pressure
reference pressure
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
JP23049687A
Other languages
Japanese (ja)
Other versions
JPH0648227B2 (en
Inventor
Nobuyuki Sugimura
Kimihisa Yoshikawa
Masakazu Yamamoto
Masato Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Accumulator Co Ltd
Original Assignee
Nippon Accumulator Co Ltd
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 by Nippon Accumulator Co Ltd filed Critical Nippon Accumulator Co Ltd
Priority to JP62230496A priority Critical patent/JPH0648227B2/en
Publication of JPS6473233A publication Critical patent/JPS6473233A/en
Publication of JPH0648227B2 publication Critical patent/JPH0648227B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE:To enable the checking of a liquid leakage simple and accurately, by comparing a reference time required for the change of an accumulator from the first to second reference pressure with a time required for an actual change thereof. CONSTITUTION:A motor 11 is driven to operate a pump 8 with the min. opera tion pressure of an accumulator 1 in normal condition with no liquid leakage as first reference pressure and with the max. operation pressure as second reference pressure so that a liquid within a liquid tank 6 is forced to a hydraulic circuit 7 by a specified amount and a time required for change of the accumula tor 1 from the first to second reference pressure is put as reference time. Then, the liquid is forced by a specified amount to the accumulator at the first refer ence time and the second reference pressure is reached to measure the time covered with a time measuring device 10. The time measured is compared with the reference time by a computer COM and when there is no difference therebetween, no liquid leakage occurs. Otherwise, it is judged that a liquid leakage has occurred and a display is made to that effect.
JP62230496A 1987-09-14 1987-09-14 How to check for leaks in the hydraulic circuit Expired - Fee Related JPH0648227B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62230496A JPH0648227B2 (en) 1987-09-14 1987-09-14 How to check for leaks in the hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62230496A JPH0648227B2 (en) 1987-09-14 1987-09-14 How to check for leaks in the hydraulic circuit

Publications (2)

Publication Number Publication Date
JPS6473233A true JPS6473233A (en) 1989-03-17
JPH0648227B2 JPH0648227B2 (en) 1994-06-22

Family

ID=16908681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62230496A Expired - Fee Related JPH0648227B2 (en) 1987-09-14 1987-09-14 How to check for leaks in the hydraulic circuit

Country Status (1)

Country Link
JP (1) JPH0648227B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003042089A (en) * 2001-07-31 2003-02-13 Sayama Seisakusho:Kk Diagnostic method for check valve and/or pressure tank and water supplying device
EP1734351A1 (en) * 2005-06-16 2006-12-20 Gaz De France Procedure and evalutaion system of leakages in a device for storing gas for fuelling purposes under high pressure
US7326370B2 (en) 2005-03-09 2008-02-05 E. I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof
JP2014197007A (en) * 2009-06-11 2014-10-16 イートン コーポレーションＥａｔｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Failure detection and failure reduction in hybrid drive system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54140585A (en) * 1978-04-24 1979-10-31 Diesel Kiki Co Fluid circuit leakage detector
JPS5832453U (en) * 1981-08-26 1983-03-03 株式会社コスモ計器 Differential pressure type leak testing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832453B2 (en) * 1974-10-04 1983-07-13 株式会社日立製作所 Denparoway Soshisouchi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54140585A (en) * 1978-04-24 1979-10-31 Diesel Kiki Co Fluid circuit leakage detector
JPS5832453U (en) * 1981-08-26 1983-03-03 株式会社コスモ計器 Differential pressure type leak testing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003042089A (en) * 2001-07-31 2003-02-13 Sayama Seisakusho:Kk Diagnostic method for check valve and/or pressure tank and water supplying device
US7326370B2 (en) 2005-03-09 2008-02-05 E. I. Du Pont De Nemours And Company Black conductive thick film compositions, black electrodes, and methods of forming thereof
EP1734351A1 (en) * 2005-06-16 2006-12-20 Gaz De France Procedure and evalutaion system of leakages in a device for storing gas for fuelling purposes under high pressure
JP2014197007A (en) * 2009-06-11 2014-10-16 イートン コーポレーションＥａｔｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Failure detection and failure reduction in hybrid drive system
US10030648B2 (en) 2009-06-11 2018-07-24 Eaton Intelligent Power Limited Fault detection and mitigation in hybrid drive system

Also Published As

Publication number Publication date
JPH0648227B2 (en) 1994-06-22

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