CN100396894C - Sectional dynamic machine-oil pressure fault inspecting system of engine - Google Patents

Sectional dynamic machine-oil pressure fault inspecting system of engine Download PDF

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Publication number
CN100396894C
CN100396894C CNB2005100255745A CN200510025574A CN100396894C CN 100396894 C CN100396894 C CN 100396894C CN B2005100255745 A CNB2005100255745 A CN B2005100255745A CN 200510025574 A CN200510025574 A CN 200510025574A CN 100396894 C CN100396894 C CN 100396894C
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China
Prior art keywords
engine
oil
pressure
engine oil
cooling filter
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Expired - Fee Related
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CNB2005100255745A
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Chinese (zh)
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CN1854473A (en
Inventor
张惠琪
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Shanghai New Power Automotive Technology Co ltd
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Shanghai Diesel Engine Co Ltd
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Priority to CNB2005100255745A priority Critical patent/CN100396894C/en
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Publication of CN100396894C publication Critical patent/CN100396894C/en
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  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The present invention relates to a section dynamic detection system for an engine oil pressure malfunction of an engine. An engine lubricating system is composed of an engine oil pump (1), an engine oil cooling filter (3), a main oil passage (5), an engine oil pipeline (6) and a terminal pressure monitoring meter (7), wherein a first middle pressure meter (2) is connected in series between an outlet of the engine oil pump and an inlet of the engine oil cooling filter. A second middle pressure meter (4) is connected in series between an outlet of the engine oil cooling filter and an inlet for entering the main oil passage of an engine. When an engine is in a running state, the dynamic detection for an engine oil pressure malfunction of the engine can be rapidly and exactly carried out by measuring the change of three node pressure values by the middle pressure meters in a section mode. The present invention has the advantages of convenient operation, accuracy, reliability and low cost.

Description

Sectional dynamic machine-oil pressure fault inspecting system of engine
One, technical field
The present invention relates to the detecting method of engine motor oil pressure fault.
Two, background technique
Because engine lubrication system is being born the lubrication to the motion component, so, must guarantee certain design pressure of lubrication system lubricant oil (machine oil) in order to guarantee the motor proper functioning.If lubricant oil (machine oil) leaks, will cause engine oil pressure to descend, motor can't run well, even can cause producing the serious consequence that moving parts is killed or damaged.Based on this reason, every motor all must strictness carry out stand test before dispatching from the factory, whether the machines oil pressure is normal, if the low problem of engine oil pressure just can not be dispatched from the factory, must in time find out the reason of low this fault of engine oil pressure, and take eliminating measure.At present, normally the maintainer is under the motor state of rest, and oil leab is sealed, and by pressurized air being injected the method for oil leab, detects body main oil gallery or machine oil cooling filter and whether has faults such as leakage.But this detecting method under static state can't detect owing to the leakage that causes bigger than normal of body machining error bearing hole gap causes the low fault of engine oil pressure.
Three, summary of the invention
The invention provides a kind of sectional dynamic machine-oil pressure fault inspecting system of engine, take between oil pump outlet, machine oil cooling filter and the motor main oil gallery of engine lubrication system, the method of intermediate pressure table is installed, when motor is in operating condition on stand, carry out the variation of three node pressure values of areal survey and compare by the intermediate pressure table in the system of being installed on, just can implement detection of dynamic the engine motor oil pressure fault.
The present invention is achieved in that a kind of sectional dynamic machine-oil pressure fault inspecting system of engine, comprise oil pump, machine oil cooling filter, main oil gallery, machine oil pipeline and terminal pressure monitoring form, between oil pump outlet and the import of machine oil cooling filter, the first intermediate pressure table has been installed in series, export and enter between the import of motor main oil gallery at the machine oil cooling filter, the second intermediate pressure table has been installed in series.Oil pump outlet, the lubricant oil (machine oil) with certain design pressure enter before the machine oil cooling filter and the slave oil cooling but the filter cleaner outlet enter pressure before the motor main oil gallery, by the pressure ratio on intermediate pressure table and the motor terminal pressure monitoring form, can rapidly, accurately detect motor oil leak under dynamically, cause the low failure cause of engine oil pressure.Easy to operate, accurately and reliably, with low cost.
Four, description of drawings
Fig. 1 is the sectional dynamic machine-oil pressure fault inspecting system of engine schematic representation.
Among the figure, 1 is oil pump, and 2 is the first intermediate pressure table, and 3 is the machine oil cooling filter, and 4 is the second intermediate pressure table, and 5 is main oil gallery, and 6 is the machine oil pipeline, and 7 is the terminal pressure monitoring form.
Five, embodiment
Optimal way of the present invention is provided by following accompanying drawing.
Referring to Fig. 1, sectional dynamic machine-oil pressure fault inspecting system of engine, engine lubrication system comprises oil pump (1), machine oil cooling filter (3), main oil gallery (5), machine oil pipeline (6) and terminal pressure monitoring form (7), between oil pump (1) outlet and machine oil cooling filter (3) import and at machine oil cooling filter (3), export and enter between motor main oil gallery (5) import, take to remove method silently in the lubrication system, in original position of installing silently, with the series connection form dish-type first intermediate pressure table (2) and the dish-type second intermediate pressure table (4) are installed respectively respectively.The range ability of two intermediate pressure tables is (0~10) Kg/cm 2When motor places when being in operating condition on the test-bed, variation by three node pressure values on two intermediate pressure tables and the motor terminal pressure monitoring form (7) also compares, just can rapidly, accurately detect motor in dynamically oil leak down, cause the low failure cause of engine oil pressure.In order to guarantee the motor proper functioning, must guarantee the certain design pressure of lubrication system lubricant oil (machine oil).When motor 2200 rev/mins of declared working condition, when lubricating oil temperature was 95 ℃, oil pump (1) outlet pressure was 5Kg/cm 2About, the node pressure value on the first intermediate pressure table (2) should be at 5Kg/cm 2About, if be lower than 3Kg/cm 2, just illustrate that there is the lubricating oil leakage fault in oil pump (1) segmentation, just must check, and get rid of fault the installation of oil pump (1) flat pad, fuel sucking pipe Plane Installation, oil pump (1) impeller clearance etc.When machine oil enter machine oil cooling filter (3) and slave oil cooling but filter cleaner (3) enter the preceding engine oil pressure of motor main oil gallery (5), the node pressure value on the second intermediate pressure table (4) should be at 4.5Kg/cm 2About, if be lower than 3Kg/cm 2, just illustrate that there is oil leak in machine oil cooling filter (3) segmentation, just must check, and get rid of fault the installation of machine oil cooling filter (3).When during in 4.5 kg/cm, being not less than 2.8Kg/cm through the node pressure value of main oil gallery (5) back on terminal pressure monitoring form (7) in the node pressure value on the second intermediate pressure table (4) 2If be lower than 2.8Kg/cm 2The time, perhaps motor is at (680~700) rev/min idle running, and the node pressure value on the terminal pressure monitoring form (7) is lower than 1.0Kg/cm 2The time, just illustrating that motor main oil gallery (5) segmentation exists lubricant oil seriously to leak, its reason is exactly because body machining error bearing play is bigger than normal, causes producing main oil gallery (5) segmentation oil leak, fault that engine oil pressure is low.This all situation takes place, and just must change body, can't detected oil leak under static state and cause the low fault of engine oil pressure thereby thoroughly solve motor.

Claims (1)

1. sectional dynamic machine-oil pressure fault inspecting system of engine, comprise oil pump (1), machine oil cooling filter (3), main oil gallery (5), machine oil pipeline (6) and terminal pressure monitoring form (7), it is characterized in that between oil pump (1) outlet and machine oil cooling filter (3) import, the first intermediate pressure table (2) has been installed in series, export and enter between motor main oil gallery (5) import at machine oil cooling filter (3), the second intermediate pressure table (4) has been installed in series.
CNB2005100255745A 2005-04-29 2005-04-29 Sectional dynamic machine-oil pressure fault inspecting system of engine Expired - Fee Related CN100396894C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100255745A CN100396894C (en) 2005-04-29 2005-04-29 Sectional dynamic machine-oil pressure fault inspecting system of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100255745A CN100396894C (en) 2005-04-29 2005-04-29 Sectional dynamic machine-oil pressure fault inspecting system of engine

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CN1854473A CN1854473A (en) 2006-11-01
CN100396894C true CN100396894C (en) 2008-06-25

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102012318B (en) * 2010-07-05 2012-06-27 南车戚墅堰机车有限公司 Diesel engine oil test bed system
CN104483135B (en) * 2014-12-03 2017-06-06 中国人民解放军国防科学技术大学 A kind of liquid-propellant rocket engine defective pipe partition method
CN116026532A (en) * 2023-03-27 2023-04-28 苏州恩都法汽车系统股份有限公司 Sectional type leakage diagnosis system, sectional type leakage diagnosis method and vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852693A (en) * 1987-08-18 1989-08-01 Takano Corporation Lubrication monitoring apparatus for machine
JPH09264116A (en) * 1996-03-29 1997-10-07 Nissan Diesel Motor Co Ltd Oil pressure alarm device for marine engine
CN1428499A (en) * 2001-12-24 2003-07-09 邵元清 Oil pressure alarm device for gasoline engine
CN2682210Y (en) * 2004-03-30 2005-03-02 吉宝忠 Electronic engine oil pump for engine pre-lubrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852693A (en) * 1987-08-18 1989-08-01 Takano Corporation Lubrication monitoring apparatus for machine
JPH09264116A (en) * 1996-03-29 1997-10-07 Nissan Diesel Motor Co Ltd Oil pressure alarm device for marine engine
CN1428499A (en) * 2001-12-24 2003-07-09 邵元清 Oil pressure alarm device for gasoline engine
CN2682210Y (en) * 2004-03-30 2005-03-02 吉宝忠 Electronic engine oil pump for engine pre-lubrication

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Address after: 200432 No. 2636, military road, Shanghai

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Granted publication date: 20080625

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