CN201802535U - Common-rail injector detection system of diesel car - Google Patents
Common-rail injector detection system of diesel car Download PDFInfo
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- CN201802535U CN201802535U CN2010202905091U CN201020290509U CN201802535U CN 201802535 U CN201802535 U CN 201802535U CN 2010202905091 U CN2010202905091 U CN 2010202905091U CN 201020290509 U CN201020290509 U CN 201020290509U CN 201802535 U CN201802535 U CN 201802535U
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Abstract
The utility model provides a common-rail injector detection system of a diesel car. The common-rail injector detection system comprises an oil tank, an electric control high-pressure oil pump, a motor electrically connected with the electric control high-pressure oil pump, a common rail, an injector and a rail pressure control unit connected with the oil tank, the electric control high-pressure oil pump, the motor, the common rail and the injector respectively; an oil return pipe is connected between the electric control high-pressure oil pump and the oil tank; the common rail is communicated with the electric control high-pressure oil pump and the injector through a high-pressure oil pipe; the motor drives the electric control high-pressure oil pump to transfer the fuel oil into the common rail from the oil tank; an oil pump proportional valve is arranged between the common rail and the electric control high-pressure oil pump so as to control the oil mass entering the common rail; the common rail is also provided with a rail pressure sensor in electric connection with the rail pressure control unit; and one end of the injector is connected with the common rail, the oil tank and the electric control high-pressure oil pump through an oil pipe respectively. The common-rail injector detection system of a diesel engine automobile adopts a method of PI algorithm and D fuzzy control comprehensive algorithm, adapts to the adjustment requirements of different stages and ensures relatively good effect in stabilizing the rail pressure, and the pressure precision can reach +/-0.5 MPA.
Description
Technical field
The utility model relate to the diesel automobile engine oil sprayer detect for auto parts and components Function detection and industrial control algorithm in the application in automobile maintenance field, relate in particular to a kind of diesel car common-rail injector detection system.
Background technique
Along with improving constantly of people's quality of life, to the power character of automobile, Economy, emission performance, Security, and the requirement of aspects such as travelling comfort more and more higher.Diesel engine becomes the major impetus of various types of vehicles with its good and economic, power character and reliability, the employing rate of diesel engine is more and more higher.
The quality of diesel engine fuel oil directly influences exhaust index, and after the long-term use of diesel car common-rail injector, may cause greasy dirt to stop up, damage, and situation such as oil sprayer fault, whether the oil sprayer monitor station is up to standard in order to detect the oil sprayer fuel injection quantity, whether damage, whether sealing and atomization be good, controls high-pressure diesel simultaneously in order to flushing oil sprayer greasy dirt, and whether check oil sprayer circuit is normal.The usability of oil sprayer monitor station depends on its crucial control accuracy of rail parts rail pressure altogether, and therefore, the controlling method of developing high performance monitor station common rail system and rail pressure particularly has urgently.
The model utility content
The purpose of this utility model is, a kind of diesel car common-rail injector detection system is provided, and it is in order to detecting the function and the performance of oil spout, with the common rail rail pressure of test be controlled at the target rail pressure ± 0.5Mpa in.
For achieving the above object, the utility model provides a kind of diesel car common-rail injector detection system, comprise: a fuel tank, the Electrocontrolled high-pressure oil pump, motor with this Electrocontrolled high-pressure oil pump electric connection, have rail altogether, oil sprayer, and respectively with fuel tank, the Electrocontrolled high-pressure oil pump, motor, be total to rail, the rail pressure control unit that oil sprayer interrelates, be connected with a return tube between this Electrocontrolled high-pressure oil pump and the fuel tank, all be connected between rail and Electrocontrolled high-pressure oil pump and the oil sprayer altogether by a high-pressure oil pipe, driven by motor Electrocontrolled high-pressure oil pump imports fuel from fuel tank into common rail, be provided with an oil pump Proportional valve enters common rail with control oil mass between rail and the Electrocontrolled high-pressure oil pump altogether, altogether also be provided with a rail pressure sensor on the rail and the rail pressure control unit is electrically got in touch, oil sprayer one end is connected with fuel tank and Electrocontrolled high-pressure oil pump respectively by oil pipe.
Be provided with a heating stick, temperature transducer, an and liquid level sensor in the described fuel tank, this heating stick, temperature transducer, liquid level sensor, and motor all carry out regulating and controlling by the rail pressure control unit.
Described Electrocontrolled high-pressure oil pump is provided with the oil pump delivery outlet, a high-pressure oil pipe by this oil pump delivery outlet with the Electrocontrolled high-pressure oil pump together rail be connected; Return tube between this Electrocontrolled high-pressure oil pump and the fuel tank is provided with a filter cleaner.
Described common rail one end is provided with rail safety valve altogether, and the end that common rail is provided with common rail safety valve is connected with the oil pipe of drawing from oil sprayer one end by an oil pipe.
Described oil sprayer one side also is provided with oil spout test measuring cup.
Described rail pressure control unit also electrically connects an emergency stop cock, this emergency stop cock control complete machine power supply, its respectively with rail pressure sensor, temperature transducer, complete machine power supply, motor, a display screen, keyboard, oil-feed solenoid valve, and liquid level sensor electrically get in touch.
The beneficial effects of the utility model: diesel car common-rail injector detection system provided by the utility model, the front end closed loop control is adopted in rail pressure control in its system, method by PI algorithm and D item fuzzy control integration algorithm, adapt to different phase and regulate requirement, play effect preferably to rail pressure is stable, pressure precision can reach ± 0.5MPA.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is a diesel car common-rail injector detection system structural representation of the present utility model;
Fig. 2 is the controlling method schematic diagram of rail pressure in the utility model diesel car common-rail injector detection system;
Fig. 3 is rail pressure sensor corresponding voltage value and oil sprayer current waveform figure;
Fig. 4 is for being total to the three phases schematic representation of rail rail pressure control;
Fig. 5 is for adopting the rail pressure control design sketch of the utility model controlling method.
Embodiment
For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
As shown in Figure 1, the utility model provides a kind of diesel car common-rail injector detection system, it comprises: a fuel tank 1, Electrocontrolled high-pressure oil pump 2, motor 3 with these Electrocontrolled high-pressure oil pump 2 electric connections, have rail 4 altogether, oil sprayer 5, and respectively with fuel tank 1, Electrocontrolled high-pressure oil pump 2, motor 3, be total to rail 4, the rail pressure control unit 6 that oil sprayer 5 interrelates, be connected with a return tube 11 between this Electrocontrolled high-pressure oil pump 2 and the fuel tank 1, all be connected between rail 4 and Electrocontrolled high-pressure oil pump 2 and the oil sprayer 5 altogether by a high-pressure oil pipe, motor 3 drives Electrocontrolled high-pressure oil pump 2 and imports fuel from fuel tank 1 into common rail 4, be provided with an oil pump Proportional valve 22 enters common rail 4 with control oil mass between rail 4 and the Electrocontrolled high-pressure oil pump 2 altogether, also be provided with a rail pressure sensor 42 altogether on the rail 4 and electrically get in touch with rail pressure control unit 6, oil sprayer 5 one ends are connected with fuel tank 1 and Electrocontrolled high-pressure oil pump 2 respectively by oil pipe 52.
Wherein, be provided with a heating stick 12, temperature transducer 14, an and liquid level sensor 16 in the fuel tank 1, this heating stick 12, temperature transducer 14, liquid level sensor 16, and motor 3 all carry out regulating and controlling by rail pressure control unit 6.
Electrocontrolled high-pressure oil pump 2 be provided with oil pump delivery outlet 24, one high-pressure oil pipes 26 by this oil pump delivery outlet 24 with Electrocontrolled high-pressure oil pump 2 together rail 4 be connected; Also be provided with a filter cleaner 112 on the return tube 11 between this Electrocontrolled high-pressure oil pump 2 and the fuel tank 1, the oil mass that does not enter common rail 4 is returned in the fuel tank 1 through return tube 11 and by the filtration of filter cleaner 112.
In the utility model, described common rail 4 one ends are provided with rail safety valve 44 altogether, and the end that common rail 4 is provided with common rail safety valve 44 is connected with the oil pipe 52 of drawing from oil sprayer 5 one ends by an oil pipe 46.Oil sprayer 5 one sides also are provided with oil spout test measuring cup 54.Rail pressure control unit 6 also electrically connects an emergency stop cock 62, this emergency stop cock 62 control complete machine power supplies, its respectively with rail pressure sensor 42, temperature transducer 14, complete machine power supply, motor 3, a display screen, keyboard, oil-feed solenoid valve (not shown), and liquid level sensor 16 electrically connect.During use, this rail pressure control unit 6 is connected with man-machine interface 7, for being total to rail 4, motor 3 drives Electrocontrolled high-pressure oil pump 2 fuel oil is pressed into common rail 4, for being total to the input end and the rail pressure pressurized end of rail 4 fuel oils, the high-pressure oil pipe 48 of rail 4 connections and oil sprayer 5 are for rail 4 fuel oil output terminals and rail pressure are unloaded pressure side altogether altogether.The rail pressure sensor 42 that is total to simultaneously on the rail 4 is a rail pressure feedback medium.For same test operating mode, the fuel injection pulsewidth of rail pressure control unit 6 control oil sprayers 5 and the time lag are by the output of fixed frequency equivalent, this rail pressure control unit 6 is according to the feedback of rail pressure sensor 42 simultaneously, the oil pump Proportional valve 22 that control Electrocontrolled high-pressure oil pump 2 is input in the common rail 4, control oil pump Proportional valve 22 apertures reach the rail rail pressure effect altogether of regulating.When the oil mass of the average oil mass that enters into common rail 4 and oil sprayer 5 ejections reaches transient equiliblium, rail pressure is stabilized in the target rail pressure, realizes rail pressure control.
The front end closed loop control is adopted in rail pressure control of the present utility model, and the target rail pressure of test operating mode is the input of control algorithm, and the rail pressure value that rail pressure sensor 42 is gathered is the algorithm value of feedback, output oil pump Proportional valve aperture.In the rail pressure control procedure, adopt pid algorithm and rail pressure rate of change FUZZY ALGORITHMS FOR CONTROL that voltage pwm and size of current are regulated, regulate the oil pump Proportional valve, and then the common rail of adjusting diesel engine, thereby regulate oil sprayer 5 pressure, in this process, 42 pairs of common rail for diesel engine rail pressures of rail pressure sensor are gathered, and the rail pressure of gathering is sent to the rail pressure control unit as value of feedback, its control principle is as shown in Figure 2.When the test beginning, after rail pressure control unit 6 is controlled motors 3 runnings and is opened oil sprayer 5, progressively set up rail pressure, testing the operating mode goal pressure after 10 seconds continually and steadily when being total to the rail rail pressure, open oil spout test measuring cup 54 and collect the fuel injection quantity of stipulated number, reference value under actual fuel injection amount and this operating mode is compared, can determine whether oil sprayer 5 stops up or damage.Same principle control rail pressure is stable, can be used for detecting atomizing effect, the sealing effect of oil sprayer 5 and will be total to the rail rail pressure and be adjusted to certain high pressure with the inner residual dirty grain of flushing oil sprayer 5, rail pressure control unit 6 is judged whether fault of oil sprayer 5 circuit according to oil sprayer 5 electric current and voltages feedback.
In the time of near rail pressure is adjusted to the target rail pressure, the fluctuation of rail pressure is mainly caused by oil sprayer 5 oil spouts, also is subjected to factor affecting such as oil sprayer 5 oil returns, oily temperature.The rail pressure fluctuating range is by rail pressure and fuel injection pulsewidth decision, and the big more oil sprayer 5 opening and closing instantaneous pressure fluctuations of rail pressure are big more, and fuel injection pulsewidth is long more, and the rail pressure fluctuation is also big more.As shown in Figure 3, the curve that wherein is positioned at the figure top is rail pressure sensor 42 corresponding voltage value, rail pressure high voltage more is big more, the below line segment is oil sprayer 5 current waveforms, when oil sprayer 5 is opened moment, be total to the rail rail pressure and after postponing 0.5ms, descend rapidly, when oil sprayer 5 turn-off transients, rail pressure rises again rapidly after postponing 0.5ms, does the short time concussion afterwards.Control algorithm to oil spout after pressure surge do adjusting, to target rail pressure value, get the rail pressure fast and stable ready an oil spout.
In the utility model, the fuel injection quantity testing precision of oil sprayer 5 depends primarily on the lasting accuracy of common rail rail pressure, and in oil spout measurement process, the rail rail pressure is stable more altogether, therefore altogether fuel injection quantity mean value to actual measurement is accurate more, and the control of rail rail pressure plays a decisive role to the performance of system.In the utility model, the control of the common rail rail pressure of step 2 comprises three phases (as shown in Figure 4), the start up period that it being respectively rail pressure, rail pressure ascent stage, and rail pressure maintenance stage; It the start up period of rail pressure rising appears in oil pump Proportional valve 22 from the complete shut-down to the rail pressure adjustment process, rail pressure ascent stage to be rail pressure from beginning to rise the arrive adjustment process of target rail pressure, the rail pressure maintenance stage is that rail pressure rises to the target rail pressure and keeps the adjustment process of target rail pressure.Wherein, described in rail pressure the start up period in, mainly,, reach the startup rail pressure as early as possible to regulate oil pump Proportional valve 22 dutycycles by fuzzy is calculated, reduce the test wait time; In the rail pressure ascent stage, mainly fuzzy is regulated, regulate rail pressure and at the uniform velocity rise by setting speed, the target rail pressure is divided into a plurality of stages, according to actual test case the fuzzy table in each stage is demarcated and regulated; Owing to higher to the rail pressure required precision,, mainly the I item in the pid algorithm is regulated in the maintenance stage in rail pressure, in more among a small circle, to adjust the accurate of rail pressure, consider that simultaneously pressure security increases rail pressure protection item and regulates.The pid algorithm that the utility model adopts is PI algorithm and D item fuzzy control integration algorithm, and it can adapt to different phase and regulate requirement.The output of P item pilot pressure and the proportional relation of error originated from input signal; the I item is eliminated steady-state error; improve the rail pressure precision; fuzzy D item is regulated the rail pressure rate of change; rail pressure is changed too fast or crosses and play regulating action slowly, and the protection item is mainly used in and guarantees under the highest operating mode that overpressure reaches safety valve and opens pressure or too high damage high-pressure oil pipe or interface unit.
As shown in Figure 5, by test and debugging, revise algorithm is every, the comprehensive rail pressure algorithm that the utility model adopted plays effect preferably to rail pressure is stable, and pressure precision can reach ± 0.5MPA.
In sum, diesel car common-rail injector detection system provided by the utility model, the front end closed loop control is adopted in rail pressure control in its system, method by PI algorithm and D item fuzzy control integration algorithm, adapt to different phase and regulate requirement, play effect preferably to rail pressure is stable, pressure precision can reach ± 0.5MPA.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection domain of the utility model accompanying Claim.
Claims (6)
1. diesel car common-rail injector detection system, it is characterized in that, comprise a fuel tank, the Electrocontrolled high-pressure oil pump, motor with this Electrocontrolled high-pressure oil pump electric connection, have rail altogether, oil sprayer, and respectively with fuel tank, the Electrocontrolled high-pressure oil pump, motor, be total to rail, the rail pressure control unit that oil sprayer interrelates, be connected with a return tube between this Electrocontrolled high-pressure oil pump and the fuel tank, all be connected between rail and Electrocontrolled high-pressure oil pump and the oil sprayer altogether by a high-pressure oil pipe, driven by motor Electrocontrolled high-pressure oil pump imports fuel from fuel tank into common rail, be provided with an oil pump Proportional valve enters common rail with control oil mass between rail and the Electrocontrolled high-pressure oil pump altogether, altogether also be provided with a rail pressure sensor on the rail and the rail pressure control unit is electrically got in touch, oil sprayer one end is connected with fuel tank and Electrocontrolled high-pressure oil pump respectively by oil pipe.
2. diesel car common-rail injector detection system as claimed in claim 1, it is characterized in that, be provided with a heating stick, temperature transducer, an and liquid level sensor in the described fuel tank, this heating stick, temperature transducer, a liquid level sensor, and motor all carry out regulating and controlling by the rail pressure control unit.
3. diesel car common-rail injector detection system as claimed in claim 1 is characterized in that described Electrocontrolled high-pressure oil pump is provided with the oil pump delivery outlet, a high-pressure oil pipe by this oil pump delivery outlet with the Electrocontrolled high-pressure oil pump together rail be connected; Return tube between this Electrocontrolled high-pressure oil pump and the fuel tank is provided with a filter cleaner.
4. diesel car common-rail injector detection system as claimed in claim 1 is characterized in that, described common rail one end is provided with rail safety valve altogether, and the end that common rail is provided with common rail safety valve is connected with the oil pipe of drawing from oil sprayer one end by an oil pipe.
5. diesel car common-rail injector detection system as claimed in claim 1 is characterized in that, described oil sprayer one side also is provided with oil spout test measuring cup.
6. diesel car common-rail injector detection system as claimed in claim 1, it is characterized in that, described rail pressure control unit also electrically connects an emergency stop cock, this emergency stop cock control complete machine power supply, its respectively with rail pressure sensor, temperature transducer, complete machine power supply, motor, a display screen, keyboard, oil-feed solenoid valve, and liquid level sensor electrically get in touch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202905091U CN201802535U (en) | 2010-08-12 | 2010-08-12 | Common-rail injector detection system of diesel car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202905091U CN201802535U (en) | 2010-08-12 | 2010-08-12 | Common-rail injector detection system of diesel car |
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| CN201802535U true CN201802535U (en) | 2011-04-20 |
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| CN2010202905091U Expired - Fee Related CN201802535U (en) | 2010-08-12 | 2010-08-12 | Common-rail injector detection system of diesel car |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968018A (en) * | 2010-08-12 | 2011-02-09 | 深圳市元征软件开发有限公司 | Common rail system of diesel oil injector detection table and method thereof for controlling rail pressure in system |
| CN102777302A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Method for driving parameter optimization experiment of high-pressure common-rail high-speed electromagnetic valve |
| CN103498745A (en) * | 2013-10-10 | 2014-01-08 | 中国人民解放军济南军区72465部队 | Automatic pressure testing instrument of oil atomizer |
| CN103573517A (en) * | 2012-08-10 | 2014-02-12 | 北汽福田汽车股份有限公司 | Detector and detection method for common rail and oil sprayer of engine |
| CN103644062A (en) * | 2013-12-25 | 2014-03-19 | 天津理工大学 | Oil injection timing detection method of diesel engine based on AT89C52 single chip |
| CN103670862A (en) * | 2013-12-25 | 2014-03-26 | 天津理工大学 | Diesel injection timing detection method based on AT89C52 single-chip microcomputer |
| CN105840332A (en) * | 2016-05-31 | 2016-08-10 | 攀枝花学院 | Electrically controlled common rail type diesel injection system |
| CN106640465A (en) * | 2017-01-23 | 2017-05-10 | 广州三业科技有限公司 | Oil supplying starting system of high-pressure common-rail electric injection diesel engine |
| GB2550599A (en) * | 2016-05-24 | 2017-11-29 | Delphi Int Operations Luxembourg Sarl | Method of testing fuel injection equipment |
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
| CN112729850A (en) * | 2020-11-16 | 2021-04-30 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN113279886A (en) * | 2021-06-16 | 2021-08-20 | 哈尔滨工程大学 | Diesel engine high pressure common rail injector cleanliness detection device |
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2010
- 2010-08-12 CN CN2010202905091U patent/CN201802535U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968018B (en) * | 2010-08-12 | 2015-05-27 | 深圳市元征软件开发有限公司 | Common rail system of diesel oil injector detection table and method thereof for controlling rail pressure in system |
| CN101968018A (en) * | 2010-08-12 | 2011-02-09 | 深圳市元征软件开发有限公司 | Common rail system of diesel oil injector detection table and method thereof for controlling rail pressure in system |
| CN102777302A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Method for driving parameter optimization experiment of high-pressure common-rail high-speed electromagnetic valve |
| CN103573517A (en) * | 2012-08-10 | 2014-02-12 | 北汽福田汽车股份有限公司 | Detector and detection method for common rail and oil sprayer of engine |
| CN103498745A (en) * | 2013-10-10 | 2014-01-08 | 中国人民解放军济南军区72465部队 | Automatic pressure testing instrument of oil atomizer |
| CN103644062A (en) * | 2013-12-25 | 2014-03-19 | 天津理工大学 | Oil injection timing detection method of diesel engine based on AT89C52 single chip |
| CN103670862A (en) * | 2013-12-25 | 2014-03-26 | 天津理工大学 | Diesel injection timing detection method based on AT89C52 single-chip microcomputer |
| CN103670862B (en) * | 2013-12-25 | 2015-12-09 | 天津理工大学 | A kind of diesel engine fuel injecting timing detection method based on AT89C52 single-chip microcomputer |
| CN103644062B (en) * | 2013-12-25 | 2016-03-09 | 天津理工大学 | A kind of diesel engine fuel injecting timing detection method based on AT89C52 single-chip microcomputer |
| US11149704B2 (en) | 2016-05-24 | 2021-10-19 | Delphi Technologies Ip Limited | Method of testing fuel injection equipment |
| GB2550599A (en) * | 2016-05-24 | 2017-11-29 | Delphi Int Operations Luxembourg Sarl | Method of testing fuel injection equipment |
| GB2550599B (en) * | 2016-05-24 | 2020-05-27 | Delphi Tech Ip Ltd | Method of controlling fuel injection test equipment |
| CN105840332A (en) * | 2016-05-31 | 2016-08-10 | 攀枝花学院 | Electrically controlled common rail type diesel injection system |
| CN105840332B (en) * | 2016-05-31 | 2018-12-25 | 攀枝花学院 | Electric-control common-rail type diesel injection system |
| CN106640465A (en) * | 2017-01-23 | 2017-05-10 | 广州三业科技有限公司 | Oil supplying starting system of high-pressure common-rail electric injection diesel engine |
| CN112729850A (en) * | 2020-11-16 | 2021-04-30 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN112729850B (en) * | 2020-11-16 | 2023-01-13 | 苏州好易修信息科技有限公司 | High-pressure common rail intelligent test tool |
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
| CN112709655B (en) * | 2021-01-29 | 2023-09-22 | 枝江市宁港物流有限公司 | Tightness detection device for electric control high-pressure common rail system |
| CN113279886A (en) * | 2021-06-16 | 2021-08-20 | 哈尔滨工程大学 | Diesel engine high pressure common rail injector cleanliness detection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20190812 |
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| CF01 | Termination of patent right due to non-payment of annual fee |