CN101526020A - Alarm device of oil filter - Google Patents
Alarm device of oil filter Download PDFInfo
- Publication number
- CN101526020A CN101526020A CN200910097077A CN200910097077A CN101526020A CN 101526020 A CN101526020 A CN 101526020A CN 200910097077 A CN200910097077 A CN 200910097077A CN 200910097077 A CN200910097077 A CN 200910097077A CN 101526020 A CN101526020 A CN 101526020A
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- oil filter
- oil
- alarm device
- alarm
- differential pressure
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention relates to an alarm device and aims to provide an automatic alarm device of an oil filter used by an internal combustion engine. The alarm device is structured as follows: an A/D converting unit and a control unit are sequentially connected with a driving alarm device through wires; a differential pressure transducer and a temperature sensor are respectively connected with the A/D converting unit; the differential pressure transducer comprise two impulse tubes which are respectively connected in the site of an oil inlet pipe of the oil filter and an oil outlet pipe of the oil filter; and the temperature sensor is installed in the site of the oil inlet pipe of the oil filter. The automatic alarm device has the functions of triggering the alarm in the bypass manner and in the breakdown manner; the alarm device can give an alarm both acoustically and optically so as to ensure operators can really receive an alarm signal; the automatic alarm device of the oil filter has the advantages of high alarm accuracy, good adaptability, small volume, flexible arrangement, and easy promotion; and the automatic alarm device can set different preset values according to different oil filters.
Description
Technical field
The present invention relates to a kind of warning device, particularly relate to the autoalarm of a kind of internal-combustion engine with oil filter.
Technical background
In internal-combustion engine; machine oil has reducing friction, improves power, damp impacts, minimizing vibration, sealing cylinder, minimizing gas leakage, cool off multinomial functions such as overheated parts, cleaner engines inside; and the oil filter guarantee that is achieved of these functions just; it can filter machine oil; guarantee the machine oil cleaning; thereby motor is protected, prolonged motor working life.
Usually, the replacing of filter cleaner, or according to the motor mileage number, or according to the filter cleaner operating time.But, because service condition and environment difference, will cause more the renew cartridge time not right, cause the infringement of waste or machine.Motor in use, dust, metal filings, carbon are clear etc., and mechanical admixture will constantly be sneaked in the machine oil, the waste gas of air and burning is to the oxidation of machine oil simultaneously, also can make machine oil produce colloid gradually, mechanical admixture mixes also with colloid can form greasy filth, therefore oil filter can be stopped up after use after a while gradually, its filtering efficiency can descend, engine oil pressure by filter can reduce, when oil pressure is reduced to a certain degree, the filter cleaner bypass valve can be opened, and machine oil directly enters main oil gallery without filtering.Simultaneously, because the generally use of the continuous high strength and the high powerization, particularly high pressure co-rail system of motor, it is more and more higher to make oil pump go out oil pressure, and flow is increasing, at some in particular cases, when for example bypass valve is malfunctioning, might cause element of oil filter breakdown.If bypass valve is opened for a long time or is breakdown, in the machine oil the parts that motor is moved mutually cooperate with mechanical admixture or fragment unusual wearing and tearing take place, shorten motor working life greatly.When serious, the impurity in the machine oil even can stop up oil duct causes mechanical failure.So we do not allow above-mentioned situation to take place for a long time.
Existing warning device or maintenance indicator, complex structure, need significantly to change existing filter, the function imperfection, only can show the bypass valve opening state but can not provide to puncture and report to the police, often wrong report can not make a distinction owing to the of short duration opening state of bypass valve that engine cold starts or pressure surge etc. causes.In a word, can not accurately show the filter cleaner state well.
Therefore, provide maintenance timely or replacing to filter cleaner by the filter cleaner state, be necessary to design a kind of alarm device of oil filter, can accurately show oil filter bypass valve opening state, can accurately show the breakdown conditions of its filter core again for accurately show comprehensively.
Summary of the invention
The present invention is in order to remedy the deficiency of existing alarm device of oil filter, a kind of automatic alarm of oil filter device that can reflect the operation conditions of oil filter all-sidedly and accurately and make prompting to be provided.
The present invention is concrete the composition: A/D converting unit, control unit connect the driving alarm unit successively by lead, and differential pressure pickup and temperature transducer are connected to the A/D converting unit respectively; Described differential pressure pickup has two pressure inlet tubes, respectively junctor oil rectifier oil inlet pipe place and oil filter oil outlet tube place; Described temperature transducer is installed on oil filter oil inlet pipe place.
As a kind of improvement, there is a cross fitting at described oil filter oil inlet pipe place, and an one joint is connected to a pressure inlet tube of differential pressure pickup, mounting temperature sensor in the joint.
As a kind of improvement, there is a tee union at described oil filter oil outlet tube place, and an one joint is connected to a pressure inlet tube of differential pressure pickup.
As a kind of improvement, there is a LED display to be connected to the A/D converting unit.
As a kind of improvement, comprise in the described control unit that filtering components and parts, comparison circuit or default unit are wherein at least a.
As a kind of improvement, comprise the driving amplification circuit, relay and the warning light that connect successively in the described driving alarm unit.
As a kind of improvement, also have a buzzer to be connected to relay.
As a kind of improvement, described differential pressure pickup and temperature transducer are connected to the A/D converting unit by current-to-voltage converter respectively.
Beneficial effect of the present invention is:
1, this automatic alarm of oil filter apparatus function is complete.This device had both had bypass and had opened warning function, also had function of breakdown alarm, and can show filter cleaner inlet outlet pressure differential and machine oil inlet temperature situation in real time, guaranteed that operator can accurately understand the working condition of oil filter comprehensively.
2, this automatic alarm of oil filter device sound, light warning simultaneously after pressure reduction reaches alert if guaranteed that operator can receive alarm signal really, thereby in time taken measures.
3, this automatic alarm of oil filter device warning accuracy height.Increased temperature transducer and display unit, can know the machine oil inlet temperature in real time, judged and distinguish hot machine and the startup of cold machine; Increase filtering device, can filter the interference that causes owing to reasons such as high vibrations, avoided false alarm.
4, this automatic alarm of oil filter device adaptability is good, and different predetermined values can be set according to different oil filter.
5, this automatic alarm of oil filter apparatus structure is simple, need not reequip former oil filter, only needs to add a four-way and or three respectively in the oil inlet and outlet joint and connects pressure inlet tube, and volume is little, and flexible arrangement is easy to promote.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Fig. 2 is structure of the present invention and electrical wiring schematic representation;
Fig. 3 is a warning circuit schematic representation of the present invention.
Among the figure: differential pressure pickup 1, temperature transducer 2, current-to-voltage converter 3, A/D converting unit 4, LED display 5, control unit 6, drive alarm unit 7, drive amplification circuit 8, relay 9, warning light 10, buzzer 11, oil filter import oil pipe cross fitting 12, oil filter outlet oil pipe tee union 13, oil filter 14, oil filter filler opening 15, oil filter oil outlet 16, differential pressure pickup two PRESSURE PIPE 17, temperature sensor signal line 18, differential pressure pickup signaling line 19, power supply 20.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
As shown in Figure 1, the alarm device of oil filter among the present invention comprises: differential pressure pickup 1, temperature transducer 2, current-to-voltage converter 3, A/D converting unit 4, LED display 5, control unit 6, driving alarm unit 7.Drive the driving amplification circuit 8, relay 9 and the warning light 9 that comprise connection successively in the alarm unit 7, buzzer 10 is connected to relay 9; LED display 5 connects A/D converting unit 4, shows oil filter inlet outlet pressure differential value and import oil temperature value in real time, drives alarm unit 7 and connects control unit 6 by driving amplification circuit 8.
As shown in Figure 2,1 liang of pressure inlet tube of differential pressure pickup is junctor oil rectifier turnover oil pipe place respectively, the place respectively adds a cross fitting 12 and a tee union 13 at oil filter turnover oil pipe, and temperature transducer 2 is installed in the special hole of oil filter filler opening place four-way; Differential pressure pickup signaling line 19 and temperature sensor signal line 18 insert A/D converting unit 4 through current-to-voltage converter 3.
As shown in Figure 3, connect according to this with relay 9, power supply 20 and form the closed-loop path in warning light 10 and buzzer 11 backs in parallel, and the unlatching of its repeat circuit 9 is by control unit 6 controls, and warning light 10 and buzzer 11 are worked simultaneously after relay 9 closures.
6801 series product that control unit 6 in the present embodiment can select for use motorola inc to produce have predetermined system, comparison circuit and filtering components and parts in the control unit 6.Control unit 6 can be selected suitable control for use according to the function needs, can set in advance the pressure reduction alarm setting value according to the bypass valve cracking pressure of oil filter, as the comparison foundation of the digital signal that after 4 conversions of A/D converting unit, obtains, can judge the operation and the behaviour in service of oil filter this moment by the comparison of the two.Be provided with the filtering components and parts in the control unit 6 simultaneously, when causing pressure difference to reach the false alarm state owing to reasons such as high vibrations, the signal that control unit 6 receives has a high frequency burr signal, filtering components and parts through control unit 6, this burr undesired signal is removed, make signal smooth, do not send the alarm command signal.
Because the design of circuit each several part is easy to do for present technique field personnel, does not need to pay creative work, therefore no longer describes in detail.
The concrete working procedure of this automatic alarm of oil filter device is as follows: before the work operation, at first the bypass valve cracking pressure according to oil filter is provided with the pressure reduction alarming value; When oil filter is worked, the engine oil pressure of differential pressure pickup 1 induction filter cleaner entrance end is poor, temperature transducer 2 induction machine oil rectifier oil suction chamber oil temperatures, pressure reduction and temperature current signal are converted to through current-to-voltage converter 3 and are fit to the into voltage signal of A/D modular converter 4 usefulness, be converted to digital signal by A/D modular converter 4 then, show in real time through LED display 5; Simultaneously, pressure difference signal compares with control unit 6 alarm setting values after Shelving, as not reaching this value, does not then report to the police; If reach alarm setting value, then amplify back engage relay 9 through driving amplification circuit 8, warning light 10 and buzzer 11 are worked, and acousto-optic is reported to the police simultaneously.At this moment, the expression bypass valve is about to open, judge that as showing belonging to cold machine starts by oil temperature, then need not comprehend, as if not, and the pressure difference of back declines by a big margin, represent that then bypass valve opens, if pressure difference is continue to rise to descend after a period of time again, the filter core that then expresses possibility is breakdown, and both of these case all needs in time to maintain filter cleaner or renew cartridge more.
At last, it is also to be noted that what more than enumerate only is a kind of specific embodiment framework with alarm device of oil filter.Obviously, the invention is not restricted to above embodiment.For example, if 2 outputs of differential pressure pickup 1, temperature transducer is voltage signal, then current-to-voltage converter 3 is not indispensable components and parts, and differential pressure pickup 1 and temperature transducer 2 can be connected directly to A/D converting unit 4.All distortion that all those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (8)
1, a kind of alarm device of oil filter comprises the driving alarm unit, it is characterized in that, A/D converting unit, control unit connect the driving alarm unit successively by lead, and differential pressure pickup and temperature transducer are connected to the A/D converting unit respectively; Described differential pressure pickup has two pressure inlet tubes, respectively junctor oil rectifier oil inlet pipe place and oil filter oil outlet tube place; Described temperature transducer is installed on oil filter oil inlet pipe place.
2, alarm device of oil filter according to claim 1 is characterized in that, there is a cross fitting at described oil filter oil inlet pipe place, and an one joint is connected to a pressure inlet tube of differential pressure pickup, mounting temperature sensor in the joint.
3, alarm device of oil filter according to claim 1 is characterized in that, there is a tee union at described oil filter oil outlet tube place, and an one joint is connected to a pressure inlet tube of differential pressure pickup.
4, alarm device of oil filter according to claim 1 is characterized in that, has a LED display to be connected to the A/D converting unit.
5, alarm device of oil filter according to claim 1 is characterized in that, comprises in the described control unit that filtering components and parts, comparison circuit or default unit are wherein at least a.
6, alarm device of oil filter according to claim 1 is characterized in that, comprises the driving amplification circuit, relay and the warning light that connect successively in the described driving alarm unit.
7, alarm device of oil filter according to claim 6 is characterized in that, also has a buzzer to be connected to relay.
8, alarm device of oil filter according to claim 1 is characterized in that, described differential pressure pickup and temperature transducer are connected to the A/D converting unit by current-to-voltage converter respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097077A CN101526020A (en) | 2009-03-31 | 2009-03-31 | Alarm device of oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910097077A CN101526020A (en) | 2009-03-31 | 2009-03-31 | Alarm device of oil filter |
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| Publication Number | Publication Date |
|---|---|
| CN101526020A true CN101526020A (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910097077A Pending CN101526020A (en) | 2009-03-31 | 2009-03-31 | Alarm device of oil filter |
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| CN (1) | CN101526020A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003246A (en) * | 2010-10-28 | 2011-04-06 | 李从胜 | Filter seat |
| WO2012102662A1 (en) * | 2011-01-26 | 2012-08-02 | Scania Cv Ab | Oil filter element |
| CN104727895A (en) * | 2015-03-09 | 2015-06-24 | 广西华原过滤系统股份有限公司 | Oil filter with pressure difference alarm function |
| US9441598B2 (en) | 2013-11-08 | 2016-09-13 | Honeywell International Inc. | Aircraft fuel filter impending and actual bypass indication system |
| CN106383013A (en) * | 2016-08-17 | 2017-02-08 | 潍柴动力股份有限公司 | Oil filter anti-counterfeiting and service life diagnosis system |
| CN107476844A (en) * | 2017-08-29 | 2017-12-15 | 潍柴动力股份有限公司 | The method for diagnosing faults of lubricating system, engine and lubricating system |
| CN110295968A (en) * | 2019-06-25 | 2019-10-01 | 江苏江淮动力有限公司 | A kind of oil sump with refrigerating function |
| CN110533255A (en) * | 2019-06-29 | 2019-12-03 | 三一重机有限公司 | Engine maintaining time forecasting methods, device, equipment and storage medium |
| CN114233701A (en) * | 2021-12-29 | 2022-03-25 | 采埃孚合力传动技术(合肥)有限公司 | Hydraulic transmission system controlled by electro-hydraulic proportional valve |
-
2009
- 2009-03-31 CN CN200910097077A patent/CN101526020A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003246A (en) * | 2010-10-28 | 2011-04-06 | 李从胜 | Filter seat |
| WO2012102662A1 (en) * | 2011-01-26 | 2012-08-02 | Scania Cv Ab | Oil filter element |
| US9441598B2 (en) | 2013-11-08 | 2016-09-13 | Honeywell International Inc. | Aircraft fuel filter impending and actual bypass indication system |
| CN104727895A (en) * | 2015-03-09 | 2015-06-24 | 广西华原过滤系统股份有限公司 | Oil filter with pressure difference alarm function |
| CN106383013A (en) * | 2016-08-17 | 2017-02-08 | 潍柴动力股份有限公司 | Oil filter anti-counterfeiting and service life diagnosis system |
| CN107476844A (en) * | 2017-08-29 | 2017-12-15 | 潍柴动力股份有限公司 | The method for diagnosing faults of lubricating system, engine and lubricating system |
| CN110295968A (en) * | 2019-06-25 | 2019-10-01 | 江苏江淮动力有限公司 | A kind of oil sump with refrigerating function |
| CN110533255A (en) * | 2019-06-29 | 2019-12-03 | 三一重机有限公司 | Engine maintaining time forecasting methods, device, equipment and storage medium |
| CN110533255B (en) * | 2019-06-29 | 2023-10-27 | 三一重机有限公司 | Engine maintenance time prediction method, device, equipment and storage medium |
| CN114233701A (en) * | 2021-12-29 | 2022-03-25 | 采埃孚合力传动技术(合肥)有限公司 | Hydraulic transmission system controlled by electro-hydraulic proportional valve |
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Open date: 20090909 |