CN102828876B - Method and device for detecting fault of oil supply imbalance - Google Patents
Method and device for detecting fault of oil supply imbalance Download PDFInfo
- Publication number
- CN102828876B CN102828876B CN201210309142.7A CN201210309142A CN102828876B CN 102828876 B CN102828876 B CN 102828876B CN 201210309142 A CN201210309142 A CN 201210309142A CN 102828876 B CN102828876 B CN 102828876B
- Authority
- CN
- China
- Prior art keywords
- fuel feeding
- value
- high pressure
- rail
- time
- 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.)
- Active
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
An embodiment of the invention discloses a method and a device for detecting a fault of oil supply imbalance. The method includes: detecting the fault of the oil supply imbalance of a high-voltage common rail system by means of rail voltage waveforms, calculating a theoretic oil supply period according to the engine rotation speed and engine cylinder number under stable conditions, extracting rail voltage peaks according to the current rail voltage waveform of the high-voltage common rail system, obtaining an actual oil supply period according to the time interval of the two peaks, and determining that a certain plunger of a plunger type high-pressure oil pump fails to operate normally if the actual oil supply period is within a preset numerical range of integral multiples of the theoretic oil supply period.
Description
Technical field
The present invention relates to fault detection technique field, be specifically related to a kind of method and apparatus detecting fuel feeding imbalance fault.
Background technique
Motor is a kind of device chemical energy of fuel oil being become mechanical energy, and the burning needs of fuel oil mix according to certain ratio with air.In order to Abgasgesetz and the accurate control of satisfied country, motor have employed high-pressure common rail technology, and the system used by this technology mainly comprises the parts such as high pressure oil pump, common rail pipe and oil sprayer.
At present, a kind of method of high pressure co-rail system being carried out to the detection of fuel feeding imbalance fault is had in prior art, mainly according to measured current in current closed-loop and theoretical current contrast, detecting the leakage failure of high pressure co-rail system entirety, is namely detect whole system whether to have occurred fault.
But inventor finds in research process, because whole high pressure co-rail system has multiple parts, so just detect whether whole system breaks down, be just unfavorable for the unbalanced problem of this system fuel feeding of follow-up solution.
Summary of the invention
For solving the problem, the invention provides a kind of method and apparatus detecting fuel feeding imbalance fault, to make the fault independently distinguishing high pressure co-rail system whether belong to high pressure oil pump, and determining 2 cylinder plug formula high pressure oil pump Cylinder numbers accurately.
In order to realize the object of the invention, the invention provides a kind of method detecting fuel feeding imbalance fault, described method comprises:
Obtain the Operational Limits of current high pressure co-rail system;
Judge whether described Operational Limits meets the unbalanced breakdown judge condition of fuel feeding, if so, then according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value;
Is defined as several corresponding time points the time of rail pressure when reaching described mean value of described current high pressure co-rail system;
Using the time lag of continuous two described time points as the actual fuel feeding cycle, judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle, described N is natural number; If so, then determine that high pressure oil pump fuel feeding is uneven, the described theoretical fuel feeding cycle adopts engine speed and engine cylinder number to calculate.
Preferably, described rail pressure peak value is: the rail pressure peak value continuously in several time cycles.
Preferably, the described time of rail pressure when reaching described mean value by described current high pressure co-rail system is defined as several corresponding time points, comprising:
Determine adjustable value;
Using described mean value as reference value, determine the reference area of described mean value according to described reference value and described adjustable value;
When described rail pressure value in each reference area of several reference areas first time and described reference area exists occur simultaneously time, intersection value is defined as described in several time points.
Preferably, described breakdown judge condition comprises: oil mass, rotating speed, rail pressure are stable within the specific limits, and water temperature is greater than certain numerical value and rail pressure control belongs to closed loop states.
Preferably, described plunger-type high pressure oil pump comprises: 2 plunger high pressure oil pumps or 3 plunger high pressure oil pumps.
Preferably, the calculation method in described theoretical fuel feeding cycle is: T=(60*1000)/(n*M/2), and in formula, n is engine speed, and M is engine cylinder number.
Preferably, describedly judge that whether N number of described actual fuel feeding cycle be within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle: judge a N continuous described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle.
The present invention also provides a kind of device detecting fuel feeding imbalance fault, comprising:
Parameter acquisition module, for obtaining the Operational Limits of current high pressure co-rail system;
First judge module, for judging whether the Operational Limits that described parameter acquisition module gets meets the unbalanced breakdown judge condition of fuel feeding;
Peak value acquisition module, for when the result of described first judge module is for being, according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value;
Time point determination module, for being defined as several corresponding time points by the time of the rail pressure of described current high pressure co-rail system when reaching the mean value that described peak value acquisition module calculates;
Second judge module, for using the time lag of continuous two described time points as the actual fuel feeding cycle, judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle, described N is natural number;
Fault determination module, for when the result of described second judge module is for being, determine that high pressure oil pump fuel feeding is uneven, the described theoretical fuel feeding cycle adopts engine speed and engine cylinder number to calculate.
Preferably, described time point determination module, specifically comprises:
First determination module, for determining adjustable value;
Second determination module, for using described mean value as reference value, determines the reference area of described mean value according to described reference value and described adjustable value;
3rd determination module, when occuring simultaneously for existing when described rail pressure value first time and described reference area in each reference area of several reference areas, is defined as several time points described by intersection value.
Preferably, described second judge module comprises and judges submodule: for judging a N continuous described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention utilizes the unbalanced fault of rail pressure waveforms detection high pressure co-rail system fuel feeding, when stable, namely be under the Operational Limits of current high pressure co-rail system meets the unbalanced breakdown judge condition of fuel feeding, the theoretical fuel feeding cycle is calculated according to engine speed and engine cylinder number, again according to rail pressure waveform extracting rail pressure peak value, the actual fuel feeding cycle is determined according to continuous two peak time intervals, the fuel feeding cycle that the rail pressure waveform of the Fig. 3 that cannot normally be worked by expression 2 plunger high pressure oil pump 1 plunger is determined, i.e. actual fuel feeding cycle of determining of continuous two peak time intervals, the fuel feeding cycle that rail pressure waveform time normal by expression 2 plunger high pressure oil pump is determined, the i.e. theoretical fuel feeding cycle, the actual fuel feeding cycle be generally the theoretical fuel feeding cycle close to 2 times, so can determine just can judge that plunger-type high pressure oil pump plunger cannot normally work when the actual fuel feeding cycle is approximately theoretical fuel feeding cycle certain multiple by the rail pressure waveform observing current rail pressure system.Compared with prior art, the present invention independently can distinguish fault and whether belong to high pressure oil pump, and accurately can detect plunger-type high pressure oil pump fuel feeding imbalance fault problem in high pressure co-rail system.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention one detects plunger-type high pressure oil pump fuel feeding imbalance fault method flow diagram;
Fig. 2 is that the embodiment of the present invention one detects step 104 flow chart in plunger-type high pressure oil pump fuel feeding imbalance fault method;
Fig. 3 is that the embodiment of the present invention two detects plunger-type high pressure oil pump fuel feeding imbalance fault structure drawing of device;
Fig. 4 is that the embodiment of the present invention two detects time point determination module structural drawing in plunger-type high pressure oil pump fuel feeding imbalance fault device;
Fig. 5 is rail pressure oscillogram when 2 plunger high pressure oil pumps are normal in the embodiment of the present invention one;
Fig. 6 be in the embodiment of the present invention one 2 plunger high pressure oil pumps cannot normally time rail pressure oscillogram;
Fig. 7 is rail pressure waveform schematic diagram when 3 plunger high pressure oil pumps are normal in the embodiment of the present invention one;
Fig. 8 be in the embodiment of the present invention one 3 plunger high pressure oil pump plunger cannot normally time rail pressure waveform schematic diagram;
Fig. 9 be in the embodiment of the present invention one 3 plunger high pressure oil pump, two plungers cannot normally time rail pressure waveform schematic diagram.
Embodiment
At present, plunger-type high pressure oil pump is widely used, but increase when revealing appears in certain cylinder of plunger-type high pressure oil pump, the problem such as plunger stuck or outlet valve damage time, plunger fuel feeding there will be imbalance, this imbalance causes the rail pressure fluctuation of high pressure co-rail system to increase, simultaneously fuel delivery can corresponding increase, affects the foundation of high rail pressure.
In order to solve the problem, embodiments provide a kind of detection plunger-type high pressure oil pump fuel feeding imbalance fault method, being described in detail below in conjunction with accompanying drawing.
Embodiment one,
With reference to the detection plunger-type high pressure oil pump fuel feeding imbalance fault method flow diagram that figure 1, Fig. 1 is the embodiment of the present invention one, the present embodiment specifically can comprise:
Step 101, obtain the Operational Limits of current high pressure co-rail system.
The present embodiment is when carrying out plunger-type high pressure oil pump fuel feeding imbalance fault and detecting, and must ensure the normal operation of high pressure co-rail system, namely each Operational Limits is normal.So first will get every Operational Limits of high pressure co-rail system, such as whether oil mass, rotating speed, rail pressure, water temperature and rail pressure control are in closed loop, judge for subsequent step.
Step 102, judge whether described Operational Limits meets the unbalanced breakdown judge condition of fuel feeding, if so, then enters step 103.
This step judges whether the Operational Limits got meets the unbalanced breakdown judge condition of fuel feeding, described breakdown judge condition such as can comprise: oil mass, rotating speed, rail pressure are stable within the specific limits, water temperature is greater than certain numerical value and rail pressure control belongs to closed loop states, now illustrate that current high pressure co-rail system is in steady state, the flow process of subsequent detection fuel feeding imbalance fault can be performed.
Generally, when oil mass, rotating speed and rail pressure are stabilized in certain limit, water temperature is greater than certain numerical value, and when rail pressure control is in closed loop states simultaneously, high pressure co-rail system just can carry out the unbalanced faut detection of fuel feeding.
Step 103: according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value.
If the Operational Limits that system gets meets the unbalanced breakdown judge condition of fuel feeding, then enter the fuel feeding unbalanced faut detection stage of this step.In this stage, need to determine several time cycles, see Fig. 6, Fig. 6 is that 2 plunger pump 1 plungers cannot rail pressure oscillogram corresponding to fuel feeding, and its y coordinate is the rail pressure of current high pressure co-rail system, and abscissa then represents the time.Get interval between abscissa two points as cycle some time, within these time cycles, determine maximum occurrences and the rail pressure peak value of y coordinate rail pressure in the corresponding cycle, and then obtain the rail pressure peak value of several current high pressure co-rail systems respectively, finally by the mean value calculating rail pressure peak value.
Be understandable that, the described time cycle is the time lag value that Fig. 6 abscissa determines two time points, and value has nothing to do with other conditions.
Those skilled in the art can to do the adjustment in certain limit to the time cycle according to actual scene or demand, the value of time cycle does not affect the specific implementation of the embodiment of the present invention.
Step 104, is defined as several corresponding time points the time of rail pressure when reaching described mean value of described current high pressure co-rail system.
The rail pressure value of current high pressure co-rail system, the i.e. value represented by y coordinate of Fig. 6 rail pressure oscillogram, when reaching the rail pressure peak value above by calculating, be defined as some time point the time value corresponding to its abscissa.
Described step 104 is when specific implementation, and for meeting each demand, user can be that benchmark determines a reference area according to the tolerance of self with mean value, and flow chart is shown in Fig. 2, specifically can comprise the following steps:
Step 201: determine adjustable value.
Because the receptible tolerance of different user institute is different, think the demand meeting each user, user oneself can determine that a value is as the adjustable value determining reference area.
Step 202: using described mean value as reference value, determines the reference area of described mean value according to described reference value and described adjustable value.
With the mean value of rail pressure peak value for reference value, using reference value with determine the lower limit of the difference of adjustable value as the reference area being about to determine, using reference value with determine adjustable value with the upper limit of value as the reference area being about to determine, determine the reference area of a scope as rail pressure peak value by lower limit and the upper limit.
Step 203: when in each reference area in described several reference areas of rail pressure value first time and described reference area exists occur simultaneously time, intersection value is defined as described in several time points.
The rail pressure value that y coordinate as Fig. 6 represents, the time value that the abscissa corresponding to point crossing with reference area is first represented, as time point to be determined, determines several time points according to this.
Step 105, using the time lag of continuous two described time points as the actual fuel feeding cycle, engine speed and engine cylinder number is adopted to calculate the theoretical fuel feeding cycle, judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle, if judged result is yes, then enter step 106.
As Fig. 6, length between continuous two time points that abscissa is determined, the i.e. time lag, as the actual fuel feeding cycle, by adopting engine speed and engine cylinder number to calculate the theoretical fuel feeding cycle, then judge N number of actual fuel feeding cycle whether within the scope of the default value of some integral multiples in theoretical fuel feeding cycle.
N number of described actual fuel feeding cycle can be natural number, and N value is larger, and it is more accurate that plunger-type high pressure oil pump fuel feeding imbalance fault detects.Wherein, the calculation method in theoretical fuel feeding cycle can be: T=(60*1000)/(n*M/2), and in formula, n is engine speed, and M is engine cylinder number.
In order to make plunger-type high pressure oil pump fuel feeding imbalance fault testing result more accurate, judge N number of actual fuel feeding cycle whether within the scope of the default value of some integral multiples in theoretical fuel feeding cycle, can for judging the N continuous individual actual fuel feeding cycle whether within the scope of the default value of some integral multiples in theoretical fuel feeding cycle.
Step 106: determine that high pressure oil pump fuel feeding is uneven.
Fig. 6 represents when 2 cylinder plug oil pumps have a cylinder to occur fuel feeding fault, plunger-type fuel pump cannot normal fuel injection, within the scope of the default value of now some integral multiples in the fuel feeding cycle (theoretical fuel feeding cycle) of fuel feeding cycle (i.e. actual fuel feeding cycle) rail pressure waveform when normal of rail pressure waveform, so now can determine that high pressure oil pump fuel feeding is uneven.
They especially, when plunger-type fuel pump is 3 cylinder plug oil pump, be identical when the uneven determining step of high pressure oil pump fuel feeding and plunger-type fuel pump are 2 cylinder plug oil pump, but the last unbalanced method of determination high pressure oil pump fuel feeding is slightly different.Fig. 7 represents that 3 cylinder plug oil pumps do not break down, the waveform schematic diagram of plunger-type fuel pump normal fuel injection, then this 3 cylinder plug oil pump can export normal waveform.And the 3 cylinder plug oil pump output waveform schematic diagram of the cylinder that Fig. 8 represents in 3 cylinder plug oil pumps when breaking down, when the cylinder in 3 cylinder plug oil pumps breaks down, it is normal that 3 cylinder plug oil pump output waveforms show as two wave form output, and a wave form output is abnormal, according to this rule output waveform.Fig. 9 then represents if when two cylinders in 3 cylinder plug oil pumps break down, the waveform schematic diagram that this 3 cylinder plug oil pump can export, when two cylinders in 3 cylinder plug oil pumps break down, it is normal that 3 cylinder plug oil pump output waveforms show as a wave form output, two wave form output are abnormal, according to this rule output waveform.For how determining 3 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems, and determining 3 cylinder plug formula high pressure oil pump Cylinder numbers accurately, can be judged by the waveform rule of the output waveform figure observing 3 cylinder plug oil pumps.
Compared with prior art, the present embodiment independently can be distinguished fault and whether belong to high pressure oil pump, and accurately can detect 2 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems in high pressure co-rail system, and determines 2 cylinder plug formula high pressure oil pump Cylinder numbers accurately.Especially, the present embodiment can also determine 3 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems, and determines 3 cylinder plug formula high pressure oil pump Cylinder numbers accurately.
Embodiments provide the device detecting plunger-type high pressure oil pump fuel feeding imbalance fault, be described in detail below in conjunction with accompanying drawing.
Embodiment two,
With reference to figure 3, for the embodiment of the present invention provides the structural representation detecting plunger-type high pressure oil pump fuel feeding imbalance fault device, the present embodiment specifically can comprise:
Parameter acquisition module 301, for obtaining the Operational Limits of current high pressure co-rail system;
First judge module 302, for judging whether the Operational Limits that described parameter acquisition module gets meets the unbalanced breakdown judge condition of fuel feeding;
Peak value acquisition module 303, for when the result of described first judge module is for being, according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value;
Time point determination module 304, for being defined as several corresponding time points by the time of the rail pressure of described current high pressure co-rail system when reaching the mean value that described peak value acquisition module calculates;
Described time point determination module, Fig. 4 is shown in by structural drawing, specifically comprises:
First determination module 3041, for determining adjustable value;
Second determination module 3042, for using described mean value as reference value, determines the reference area of described mean value according to described reference value and described adjustable value;
3rd determination module 3043, when occuring simultaneously for existing when described rail pressure value first time and described reference area in each reference area of several reference areas, is defined as several time points described by intersection value.
Second judge module 305, for using the time lag of continuous two described time points as the actual fuel feeding cycle, judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle, described N is natural number; ;
Fault determination module 306, for when the result of described second judge module is for being, determine that high pressure oil pump fuel feeding is uneven, the described theoretical fuel feeding cycle adopts engine speed and engine cylinder number to calculate.
They especially, when plunger-type fuel pump is 3 cylinder plug oil pump, be identical when the uneven determining step of high pressure oil pump fuel feeding and plunger-type fuel pump are 2 cylinder plug oil pump, but the last unbalanced method of determination high pressure oil pump fuel feeding is slightly different.Fig. 7 represents that 3 cylinder plug oil pumps do not break down, the waveform schematic diagram of plunger-type fuel pump normal fuel injection, then this 3 cylinder plug oil pump can export normal waveform.And the 3 cylinder plug oil pump output waveform schematic diagram of the cylinder that Fig. 8 represents in 3 cylinder plug oil pumps when breaking down, when the cylinder in 3 cylinder plug oil pumps breaks down, it is normal that 3 cylinder plug oil pump output waveforms show as two wave form output, and a wave form output is abnormal, according to this rule output waveform.Fig. 9 then represents if when two cylinders in 3 cylinder plug oil pumps break down, the waveform schematic diagram that this 3 cylinder plug oil pump can export, when two cylinders in 3 cylinder plug oil pumps break down, it is normal that 3 cylinder plug oil pump output waveforms show as a wave form output, two wave form output are abnormal, according to this rule output waveform.For how determining 3 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems, and determining 3 cylinder plug formula high pressure oil pump Cylinder numbers accurately, can be judged by the waveform rule of the output waveform figure observing 3 cylinder plug oil pumps.
The device that the present embodiment provides independently can be distinguished fault and whether belong to high pressure oil pump, and accurately can detect 2 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems in high pressure co-rail system, and determines 2 cylinder plug formula high pressure oil pump Cylinder numbers accurately.Especially, the device that the present embodiment provides can also determine 3 cylinder plug formula high pressure oil pump fuel feeding imbalance fault problems, and determines 3 cylinder plug formula high pressure oil pump Cylinder numbers accurately.
Above the method and apparatus of the detection fuel feeding imbalance fault that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. detect a method for fuel feeding imbalance fault, it is characterized in that, described method comprises:
Obtain the Operational Limits of current high pressure co-rail system;
Judge whether described Operational Limits meets the unbalanced breakdown judge condition of fuel feeding, if so, then according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value;
Is defined as several corresponding time points the time of rail pressure when reaching described mean value of described current high pressure co-rail system;
Using continuous two time lags as the actual fuel feeding cycle, the described time lag is the interval of described time point, and judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in theoretical fuel feeding cycle, described N is natural number; If so, then determine that high pressure oil pump fuel feeding is uneven, the described theoretical fuel feeding cycle adopts engine speed and engine cylinder number to calculate.
2. method according to claim 1, is characterized in that, described rail pressure peak value is: the rail pressure peak value continuously in several time cycles.
3. method according to claim 2, is characterized in that, the described time of rail pressure when reaching described mean value by described current high pressure co-rail system is defined as several corresponding time points, comprising:
Determine adjustable value;
Using described mean value as reference value, determine the reference area of described mean value according to described reference value and described adjustable value;
When described rail pressure value in each reference area of several reference areas first time and described reference area exists occur simultaneously time, intersection value is defined as described in several time points.
4. method according to claim 1, is characterized in that, described breakdown judge condition comprises: oil mass, rotating speed, rail pressure are stable within the specific limits, and water temperature is greater than certain numerical value and rail pressure control belongs to closed loop states.
5. method according to claim 1, is characterized in that, described high pressure oil pump comprises: 2 plunger high pressure oil pumps or 3 plunger high pressure oil pumps.
6. method according to claim 1, is characterized in that, the calculation method in described theoretical fuel feeding cycle is: T=(60*1000)/(n*M/2), and in formula, n is engine speed, and M is engine cylinder number.
7. method according to claim 1, it is characterized in that, describedly judge that whether N number of described actual fuel feeding cycle be within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle: judge a N continuous described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle.
8. detect a device for fuel feeding imbalance fault, it is characterized in that, comprising:
Parameter acquisition module, for obtaining the Operational Limits of current high pressure co-rail system;
First judge module, for judging whether the Operational Limits that described parameter acquisition module gets meets the unbalanced breakdown judge condition of fuel feeding;
Peak value acquisition module, for when the result of described first judge module is for being, according to obtain respectively within several time cycles several described in the rail pressure peak value of current high pressure co-rail system, calculate the mean value of described rail pressure peak value;
Time point determination module, for being defined as several corresponding time points by the time of the rail pressure of described current high pressure co-rail system when reaching the mean value that described peak value acquisition module calculates;
Second judge module, for using continuous two time lags as the actual fuel feeding cycle, the described time lag is the interval of described time point, and judge N number of described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in theoretical fuel feeding cycle, described N is natural number;
Fault determination module, for when the result of described second judge module is for being, determine that high pressure oil pump fuel feeding is uneven, the described theoretical fuel feeding cycle adopts engine speed and engine cylinder number to calculate.
9. device according to claim 8, is characterized in that, described time point determination module, specifically comprises:
First determination module, for determining adjustable value;
Second determination module, for using described mean value as reference value, determines the reference area of described mean value according to described reference value and described adjustable value;
3rd determination module, when occuring simultaneously for existing when described rail pressure value first time and described reference area in each reference area of several reference areas, is defined as several time points described by intersection value.
10. device according to claim 8, is characterized in that, described second judge module comprises and judges submodule: for judging a N continuous described actual fuel feeding cycle whether within the scope of the default value of some integral multiples in described theoretical fuel feeding cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309142.7A CN102828876B (en) | 2012-08-27 | 2012-08-27 | Method and device for detecting fault of oil supply imbalance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210309142.7A CN102828876B (en) | 2012-08-27 | 2012-08-27 | Method and device for detecting fault of oil supply imbalance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102828876A CN102828876A (en) | 2012-12-19 |
| CN102828876B true CN102828876B (en) | 2014-12-31 |
Family
ID=47332135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210309142.7A Active CN102828876B (en) | 2012-08-27 | 2012-08-27 | Method and device for detecting fault of oil supply imbalance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102828876B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE1751533A1 (en) * | 2017-12-13 | 2019-06-14 | Scania Cv Ab | A method for checking the functionality of individual pumping elements of a high-pressure pump in a high-pressure accumulator fuel injection system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837580B (en) * | 2017-01-25 | 2019-10-29 | 中国第一汽车股份有限公司 | The accuracy control method of common rail system intermediate fuel oil the amount of injection |
| CN111980820A (en) * | 2019-05-22 | 2020-11-24 | 罗伯特·博世有限公司 | Method and control unit for predicting a return spring failure of a piston in a motor vehicle |
| CN113357032B (en) * | 2021-06-29 | 2022-06-03 | 东风汽车集团股份有限公司 | High-pressure oil pump fault detection post-processing method and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946506C1 (en) * | 1999-09-28 | 2001-07-19 | Siemens Ag | Detecting failure in pressure system of IC engine fuel injection system |
| CN1773101A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Common-rail fuel oil injection system injector failure diagnosing method |
| CN1978881A (en) * | 2005-12-05 | 2007-06-13 | 株式会社电装 | Fuel injection control system ensuring steady balance in pressure in accumulator |
| CN101294519A (en) * | 2007-04-23 | 2008-10-29 | 株式会社电装 | Fault diagnosis system and control system for internal combustion engine |
-
2012
- 2012-08-27 CN CN201210309142.7A patent/CN102828876B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946506C1 (en) * | 1999-09-28 | 2001-07-19 | Siemens Ag | Detecting failure in pressure system of IC engine fuel injection system |
| CN1773101A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Common-rail fuel oil injection system injector failure diagnosing method |
| CN1978881A (en) * | 2005-12-05 | 2007-06-13 | 株式会社电装 | Fuel injection control system ensuring steady balance in pressure in accumulator |
| CN101294519A (en) * | 2007-04-23 | 2008-10-29 | 株式会社电装 | Fault diagnosis system and control system for internal combustion engine |
Non-Patent Citations (1)
| Title |
|---|
| Injection diagnosis through common-rail pressure measurement;F Payri et.al.;《Proceedings of the Institution of Mechanical Engineering, Part D: Journal of Automobile Engineering》;20061231;第220卷(第3期);全文 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE1751533A1 (en) * | 2017-12-13 | 2019-06-14 | Scania Cv Ab | A method for checking the functionality of individual pumping elements of a high-pressure pump in a high-pressure accumulator fuel injection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102828876A (en) | 2012-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102828876B (en) | Method and device for detecting fault of oil supply imbalance | |
| CN105003372B (en) | A kind of distributive value method for diagnosing faults based on the observation of rail pressure waveform feature parameter | |
| CN103352763B (en) | The method for correcting of oil sprayer MAP curve, device and engine fuel supply system | |
| CN203141798U (en) | Fault early warning system of injection molding machine | |
| CN103075286A (en) | Method and device for detecting fault of high-pressure oil pump incapable of establishing low rail pressure | |
| CN103321809B (en) | Oil injector fault checking method and device | |
| CN110219759A (en) | A kind of static leakage measurement method of fuel injector, apparatus and system | |
| US10012205B2 (en) | Gas fuel engine spark plug failure detection | |
| CN101975156B (en) | Minimum power consumption variable-frequency energy-saving control method for pumping station | |
| CN204984826U (en) | Multi -functional oil -field flooding pump unperturbed switches monitoring device | |
| CN111765014B (en) | Method and system for monitoring leakage of high-pressure fuel system | |
| CN103452958A (en) | Pressure valve debugging system | |
| CN203259874U (en) | Test device for soft starter turn-off and performance conversion | |
| CN203532136U (en) | Gas nozzle detection equipment for gas vehicle | |
| CN107605873B (en) | A kind of error correction control system and working method for sludge plunger pump | |
| CN103511400B (en) | The method for testing performance of the duty valve in oil pump for automatic transmission | |
| CN112654775A (en) | Method for operating an internal combustion engine, motor control device and internal combustion engine | |
| CN204594696U (en) | Diesel engine fault comprehensive detection diagnostic equipment | |
| CN102913430B (en) | Heavy oil transportation screw pump analog detection method and system | |
| CN110908409B (en) | Method for quickly keeping constant flow of new energy tester | |
| CN208202009U (en) | Dual pressure sensor detecting and controlling system under freq uency conversion supercharging water supply pattern | |
| CN103850851B (en) | Method and system for detecting dynamic lift range of gag bit of common-rail oil injector | |
| CN103375395A (en) | Online detecting system for electric fuel pump | |
| CN103306964A (en) | Fault detection device | |
| CN102562180B (en) | Control method and system for speed regulation valve of steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhijian Inventor after: Liu Xingyi Inventor after: Yang Xinda Inventor after: Wang Yupeng Inventor after: Feng Jie Inventor before: Liu Xingyi Inventor before: Yang Xinda Inventor before: Wang Yupeng Inventor before: Feng Jie |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU XINGYI YANG XINDA WANG YUPENG FENG JIE TO: WANG ZHIJIAN LIU XINGYI YANG XINDA WANG YUPENG FENG JIE |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |