CN101344056A - Dynamic test method and device for fuel oil filter of vehicle - Google Patents
Dynamic test method and device for fuel oil filter of vehicle Download PDFInfo
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- CN101344056A CN101344056A CNA2008101384840A CN200810138484A CN101344056A CN 101344056 A CN101344056 A CN 101344056A CN A2008101384840 A CNA2008101384840 A CN A2008101384840A CN 200810138484 A CN200810138484 A CN 200810138484A CN 101344056 A CN101344056 A CN 101344056A
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Abstract
The invention belongs to the field of automobile electronic technology and provides a dynamic testing method of a fuel oil filter when the automobile is in operation and a dynamic testing device; the testing method comprises the following steps: a transmitting instrument used for measuring pressure difference is adopted to measure the pressure difference of an oil-inlet channel and an oil-outlet channel of the fuel oil filter when the automobile is in operation; the pressure difference value of the oil-inlet channel and the oil-outlet channel of the fuel oil filter is displayed in real time after the analysis and process are carried out by the single chip microprocessor technology and when the measurement is not acceptable, the alarming is carried out; the testing device consists of the transmitting instrument which is used for measuring the pressure difference and has two pressure inlets communicated with the oil-inlet channel and the oil-outlet channel of an automobile filter seat, a single chip microprocessor circuit, a display circuit and an alarming circuit. The method and the testing device effectively solve the problem that the dynamic measurement can be carried out to the performance of the fuel oil filter when the automobile is in operation with timely and accurate measuring result, guarantee the safe operation of the engine effectively and avoid the waste of resource.
Description
Affiliated technical field
The invention belongs to technical field of automotive electronics, the dynamic testing method and the dynamic checkout unit of fuel filter when a kind of automobilism is provided.
Technical background
In order to protect environment; country has carried out strict requirement to emission of automobile wastes; since on July 1st, 2007, country brought up to EUROIII Emission Standard to automobile exhaust emission standard by original Europe II standard, and this will have higher requirement to automobile fuel oil filter performance and working life.At present, to the test of fuel filter performance static test and the static tester dispatching from the factory before just, because detection of dynamic is carried out in the world, the domestic automobile performance to fuel filter in running that still do not solve.General provisions after 12000 kilometers of automobilisms, just must be changed fuel filter.Because our country is vast in territory, north and south environment, road conditions difference are very big, if change fuel filter by distance travelled, the fuel filter that tends to cause some to continue to use is forced to change and causes greatly waste, performance had not exceeded usage requirement when some fuel filter reached 12000 kilometers, as untimely replacing, in case fuel filter does not have the effect of filtering, dregs enter in the engine cylinder in the oil, will cause the damage and the enormous economic loss of motor.
Summary of the invention
The dynamic testing method and the dynamic checkout unit of fuel filter when the purpose of this invention is to provide a kind of automobilism.
The dynamic testing method of fuel filter is the pressure difference of filter cleaner inlet/outlet oil circuit when adopting the transmitter measured automobiles operation of test pressure difference during automobilism provided by the present invention, adopt singlechip technology to analyze, handle the back pressure difference value of display automobile filter cleaner inlet/outlet oil circuit in real time the pressure difference signal of measuring, report to the police when pressure difference is defective.
The present invention also provides the dynamic checkout unit of fuel filter when aiming at the automobilism of implementing above-mentioned test method, transmitter, single chip circuit, display circuit, warning circuit by the test pressure difference are formed, two pressure entrances of the transmitter of described test pressure difference and the inlet/outlet asphalt channel of automobile filter seat join, the input end of the output order sheet machine circuit of the transmitter of test pressure difference, the output of single chip circuit connects display circuit, warning circuit.
The pressure difference of filter cleaner inlet/outlet oil circuit when the fuel filter dynamic testing method adopts the transmitter measured automobiles operation of test pressure difference during automobilism provided by the present invention, utilize sensory technique that the pressure difference signal is become electrical signal, this signal is sent into single chip circuit analysis, handled, the pressure difference value of real-time display automobile filter cleaner inlet/outlet oil circuit, when single-chip microcomputer when the pressure difference signal judges that filter cleaner lost efficacy, control is reported to the police.This test method has solved automobile carries out detection of dynamic to the performance of fuel filter in running problem effectively, can be in time, the performance of fuel filter is carried out dynamic test during exactly to automobilism, show in real time.Adopt this method can guarantee the safe operation of motor.
Provided by the present invention when aiming at the automobilism of implementing above-mentioned test method the dynamic checkout unit of fuel filter with two pressure entrances of the transmitter of test pressure difference and advancing of automobile filter seat, the outlet asphalt channel joins, thereby fuel filter advances during the measured automobiles operation, the pressure difference of outlet oil circuit, the pressure difference signal of measuring is sent into single chip circuit and carry out data processing under the control of program, analyze, pressure difference value after handling is sent into display circuit to be shown in real time, after single-chip microcomputer is analyzed, judge that fuel filter advances, when the pressure difference value of outlet oil circuit was defective, single-chip microcomputer sent control signal control warning circuit and reports to the police.
The dynamic checkout unit of fuel filter can be tested filter cleaner in time, exactly when automobilism when fuel filter dynamic testing method and automobilism during automobilism provided by the present invention performance and technical order, guarantee the safe operation of motor car engine, improve the working life of motor, simultaneously because the fuel oil cleaning that has guaranteed to enter engine chamber, reduced emission of automobile wastes, improved the quality of air and the influence of environment.The use of this device also can prolong the service time of filter cleaner, if brought up to calculating in 14000 hours from 12000 hours with the filter cleaner operating life, life-span prolongs 16%, the cost that is filter cleaner can reduce by 16%, the recoverable amount of pressing the present automobile of China will produce huge economic benefit 1,800 ten thousand calculating.
Description of drawings
The frame principle figure of the dynamic checkout unit of fuel filter during Fig. 1 automobilism provided by the present invention;
The scheme of installation of differential pressure transmitter in first kind of embodiment of dynamic checkout unit of fuel filter during Fig. 2 automobilism provided by the present invention;
The frame principle figure of first kind of embodiment of dynamic checkout unit of fuel filter during Fig. 3 automobilism provided by the present invention;
The circuit theory diagrams of pressure difference transmitter in first kind of embodiment of dynamic checkout unit of fuel filter during Fig. 4-1 automobilism provided by the present invention;
The schematic diagram of single chip circuit, display circuit and warning circuit in first kind of embodiment of dynamic checkout unit of fuel filter during Fig. 4-2 automobilism provided by the present invention;
The scheme of installation of two pressure transmitters in second kind of embodiment of dynamic checkout unit of fuel filter during Fig. 5 automobilism provided by the present invention;
The frame principle figure of second kind of embodiment of dynamic checkout unit of fuel filter during Fig. 6 automobilism provided by the present invention;
The circuit theory diagrams of a pressure transmitter in second kind of embodiment of dynamic checkout unit of fuel filter during Fig. 7 automobilism provided by the present invention.
Among Fig. 2: 1 is the filter cleaner seat, and 1.1,1.2 are respectively the import and the outlet of filter cleaner seat asphalt channel, and 2 is fuel filter, and 3 is differential pressure transmitter, and 3.1,3.2 are respectively two pressure entrances of differential pressure transmitter.Among Fig. 5: 1 is the inlet/outlet that filter cleaner seat 1.1,1.2 is respectively filter cleaner seat asphalt channel, and 2 is fuel filter, and 3,4 is pressure transmitter, and 3.1,4.1 are respectively the pressure entrance of pressure transmitter.
Embodiment
The dynamic checkout unit of fuel filter when the invention provides the automobilism that designs of fuel filter dynamic testing method when implementing automobilism.Fig. 1 is the frame principle figure of this dynamic checkout unit.As shown in Figure 1: this dynamic checkout unit is made up of transmitter, single chip circuit, display circuit, the warning circuit of test pressure difference.First kind of embodiment of the dynamic checkout unit of fuel filter when Fig. 2-Fig. 4 is automobilism, second kind of embodiment of the dynamic checkout unit of fuel filter when Fig. 5-Fig. 7 is automobilism.Referring to Fig. 2, the transmitter of test pressure difference adopts a differential pressure transmitter 3, two pressure entrances 3.1,3.2 of differential pressure transmitter join with the inlet/outlet asphalt channel 1.1,1.2 of automobile filter seat respectively, and therefore test is the pressure difference of filter cleaner 2 inlet/outlet oil circuits.Fig. 3 is the frame principle figure of this scheme.Fig. 4-1,4-2 are respectively the schematic diagram of the circuit theory diagrams of pressure difference transmitter in first kind of embodiment of dynamic checkout unit and single chip circuit, display circuit, warning circuit.Referring to Fig. 4-1: the differential pressure transducer in the differential pressure transmitter adopts resistance strain-type differential pressure sensor TR1, and signal amplification circuit adopts amplification circuit sheet U1 and peripheral components to constitute, and amplification circuit sheet U1 adopts XTR106.Referring to Fig. 4-2: single chip circuit is made of A/D converter U2 and single-chip microcomputer U3, random access memory U4, frequency dividing circuit U5 and communication interface circuit U 6, display circuit is by sift register U7, U8, nixie tube DL1-DL4, transistor Q2-Q5 constitutes, and warning circuit is made of LED 1, LED2.Wherein: single-chip microcomputer U3 adopts STC12C5410, and A/D converter U2 adopts TLC2543, and sift register U7, U8 adopt 74HC595.The output of transmitter enters the input end of analog signal AIN0 (port1 enters from figure) of A/D converter U2, the sift register U7, the U8 that form display circuit form the cascade register, the serial port of sift register U7 meets of single-chip microcomputer U3 mouth 2, do warning usefulness LED 1, LED2 and single-chip microcomputer U3 mouth 2 in addition two join.Fuel filter advances when measuring automobilism by differential pressure transducer TR1, the pressure difference signal of outlet oil circuit, the signal of differential pressure transducer TR1 output is after amplification circuit sheet U1 amplifies, convert digital signal to by A/D converter and enter single-chip microcomputer U3, single-chip microcomputer U3 handles to display circuit the signal of input and exports real-time pressure difference signal value under the control of program, and single-chip microcomputer U3 analyzes real-time pressure difference signal value under the control of program, judge, when institute's measuring pressure difference qualified (less than 40KPa), a P2.2 by single-chip microcomputer U3 mouth 2 sends low level signal, light green LED LED1, the expression filter cleaner is working properly; When institute the measuring pressure difference defective (greater than, equal 40KPa) time, send low level signal by the another one P2.3 of single-chip microcomputer U3 mouth 2, light red light emitting diodes LED2, the expression fuel filter lost efficacy, and reminded the user to change immediately.Second kind of embodiment of the dynamic checkout unit of fuel filter when Fig. 5-Fig. 7 is automobilism.Referring to Fig. 5, the transmitter of test pressure difference adopts two pressure transmitters 3,4, two pressure entrances 3.1,4.1 of two pressure transmitters join with the inlet/outlet asphalt channel 1.1,1.2 of automobile filter seat respectively, and therefore two pressure transmitter tests is respectively the pressure of filter cleaner 2 inlet/outlet oil circuits.Fig. 6 is the frame principle figure of this scheme.Fig. 7 is the circuit theory diagrams of a pressure transmitter in second kind of embodiment of dynamic checkout unit.The back single chip circuit, display circuit, warning circuit is identical with Fig. 4-2, this scheme is different with first kind of scheme is that the transmitter of test pressure difference adopts two pressure transmitters, the output signal of every pressure transmitter enters two input end of analog signal (port1 from Fig. 4-2 of A/D converter U2 respectively, port2 enters), send into single-chip microcomputer U3 after converting digital signal to, after single-chip microcomputer U3 under the control of program carries out subtraction process to the two-way pressure signal of importing, export real-time pressure difference signal value to display circuit, and single-chip microcomputer U3 analyzes real-time pressure difference signal value under the control of program, judge, when institute's measuring pressure difference qualified (less than 40KPa), a P2.2 by single-chip microcomputer U3 mouth 2 sends low level signal, light green LED LED1, the expression filter cleaner is working properly; When institute's measuring pressure difference defective (more than or equal to 40KPa), send low level signal by a P2.3 of single-chip microcomputer U3 mouth 2, light red light emitting diodes LED2, the expression fuel filter lost efficacy, and must change immediately.
Claims (4)
1, the dynamic testing method of fuel filter during a kind of automobilism, the pressure difference of filter cleaner inlet/outlet oil circuit when it is characterized in that adopting the transmitter measured automobiles operation of test pressure difference, after adopting singlechip technology to analyze, handle the pressure difference signal measured, the pressure difference value of filter cleaner inlet/outlet oil circuit is reported to the police when pressure difference is defective during display automobile operation in real time.
2, the dynamic checkout unit of fuel filter during a kind of automobilism, it is characterized in that forming by transmitter, single chip circuit, display circuit, the warning circuit of test pressure difference, two pressure entrances of the transmitter of described test pressure difference and the inlet/outlet asphalt channel of automobile filter seat join, the input end of the output order sheet machine circuit of the transmitter of test pressure difference, the output of single chip circuit connects display circuit, warning circuit.
3, the dynamic checkout unit of fuel filter during automobilism according to claim 2, it is characterized in that transmitter by described test pressure difference is that two pressure entrances of a differential pressure transmitter, described differential pressure transmitter and the inlet/outlet asphalt channel of automobile filter seat join, the input of the output order sheet machine circuit of differential pressure transmitter, the output of single chip circuit connects display circuit, warning circuit.
4, the dynamic checkout unit of fuel filter during automobilism according to claim 2, it is characterized in that the transmitter by described test pressure difference is two pressure transmitters, the pressure entrance of two pressure transmitters joins with the inlet/outlet asphalt channel of automobile filter seat respectively, the input of the output order sheet machine circuit of two pressure transmitters, the output of single chip circuit connects display circuit, warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101384840A CN101344056A (en) | 2008-07-31 | 2008-07-31 | Dynamic test method and device for fuel oil filter of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101384840A CN101344056A (en) | 2008-07-31 | 2008-07-31 | Dynamic test method and device for fuel oil filter of vehicle |
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| CN101344056A true CN101344056A (en) | 2009-01-14 |
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| CNA2008101384840A Pending CN101344056A (en) | 2008-07-31 | 2008-07-31 | Dynamic test method and device for fuel oil filter of vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314721A (en) * | 2013-12-14 | 2015-01-28 | 西安天厚滤清技术有限责任公司 | Diesel oil purifier with pressure differential indicator |
| 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 |
| CN107290307A (en) * | 2017-07-19 | 2017-10-24 | 北京汽车股份有限公司 | For the fuel testing device of vehicle fuel cleaner and the vehicle with it |
-
2008
- 2008-07-31 CN CNA2008101384840A patent/CN101344056A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314721A (en) * | 2013-12-14 | 2015-01-28 | 西安天厚滤清技术有限责任公司 | Diesel oil purifier with pressure differential indicator |
| 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 |
| CN107290307A (en) * | 2017-07-19 | 2017-10-24 | 北京汽车股份有限公司 | For the fuel testing device of vehicle fuel cleaner and the vehicle with it |
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Open date: 20090114 |