CN103047125B - Oil pump feeding fault detecting method and device of high-pressure plunger-type fuel pump - Google Patents
Oil pump feeding fault detecting method and device of high-pressure plunger-type fuel pump Download PDFInfo
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- CN103047125B CN103047125B CN201210532939.3A CN201210532939A CN103047125B CN 103047125 B CN103047125 B CN 103047125B CN 201210532939 A CN201210532939 A CN 201210532939A CN 103047125 B CN103047125 B CN 103047125B
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Abstract
The invention discloses an oil pump feeding fault detecting method and device of a high-pressure plunger-type fuel pump. The oil pump feeding fault detecting method includes: obtaining rail pressure values of N crank signal gears of each oil supply period of in least one working cycle, wherein N is larger than or equal to 2 and smaller than or equal to the natural numbers of the crank signal gears corresponding to rail pressure boosting in an oil supply period; calculating the rail pressure boosting average value of each plunger according to the rail pressure values of the N crank signal gears of the oil supply period corresponding to each plunger; judging whether the rail pressure boosting average values of all the plungers are the same or close to each other, judging the oil pump to be normal when the rail pressure boosting values are the same or close to each other, and otherwise, judging fault exists in the oil pump. Therefore, by means of the oil pump feeding fault detecting method and device, fault of the plunger-type fuel pumps can be accurately detected, system maintenance efficiency is improved, and later development of the system can be guaranteed.
Description
Technical field
The present invention relates to mechanical field, particularly a kind of high-pressure plunger oil pump feed fault detection method and device.
Background technique
Motor majority adopts high pressure co-rail system to realize braking function, and at present, in high pressure co-rail system, the cost of each parts is all very expensive, once fault has appearred in certain parts of high pressure co-rail system, will originally keep in repair the one-tenth of at substantial.So for whole high pressure co-rail system, its faut detection just becomes very important.
Wherein, prior art discloses a kind of special fuel delivery for high pressure co-rail system to detect, to determine whether high pressure co-rail system occurs the method for fuel delivery aspect fault.Specifically: the fuel delivery first calculating whole system, and then the fuel delivery calculated and the fuel delivery threshold value preset are compared, the fuel delivery threshold value preset if be greater than, then there is the fault of fuel delivery aspect in illustrative system, otherwise there is not the fault of fuel feeding aspect in illustrative system.
But realizing in process of the present invention, the present inventor finds that in prior art, at least there are the following problems:
The fault detection method of prior art only can detect whether high pressure co-rail system occurs fuel delivery aspect fault roughly.But, fuel delivery fault Producing reason is caused to have multiple, wherein, high-pressure plunger oil pump feed fault is exactly the one of the main reasons producing fuel delivery fault, high-pressure plunger oil pump feed fault is also a critical failure for whole system, is also vital for the detection of plunger oil pump feed fault in high pressure co-rail system.Existing method cannot judge this fuel delivery fault whether because high-pressure plunger oil pump imbalance problem causes, that is, existing method cannot determine the concrete reason place causing this fuel delivery fault more subtly, maintenance man cannot determine specifically to which position in high pressure co-rail system keep in repair, this makes troubles to the maintenance of whole system and the exploitation in product later stage.
Summary of the invention
In order to solve the problem, the object of the invention is to provide a kind of high-pressure plunger oil pump feed fault detection method and device, can determine the unbalanced fault of high-pressure plunger oil pump.
The invention provides a kind of high-pressure plunger oil pump feed fault detection method, its process fault detection comprises:
Obtain the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
According to the rail pressure value of N number of crankshaft signal tooth in the fuel feeding cycle corresponding with each plunger, calculate the rail pressure rising average of each plunger;
Judge that whether the rail pressure rising average of all plungers is identical or close, if identical or close, judge that oil pump is normal, otherwise, judge that oil pump exists fuel feeding fault.
Preferably, before execution faut detection, described method also comprises: judge that whether plunger-type fuel pump is in stable operation situation;
If so, process fault detection is performed, otherwise, do not perform process fault detection.
Preferably, describedly judge that whether plunger-type fuel pump is in stable operation situation, comprising:
Gather the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature;
Whether the running parameter judging described collection is in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
Preferably, the rail pressure value of N number of crankshaft signal tooth in the fuel feeding cycle that described basis is corresponding with each plunger, calculates the rail pressure rising average of each plunger, comprising:
Calculate the difference between maxima and minima in the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle, described difference is the rail pressure rising value in each fuel feeding cycle;
According to the corresponding relation of described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtain the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.
Preferably, describedly judge that whether the rail pressure rising average of all plungers is close, comprising:
Calculate the ratio of the rail pressure rising average of every two plungers;
Judge described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Preferably, describedly judge that whether the rail pressure rising average of all plungers is close, comprising:
Calculate a mean value of the rail pressure rising average of all plungers;
Calculate the ratio between the rail pressure rising average of each plunger and described mean value successively;
Judge described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Preferably, after determining that oil pump exists fuel feeding fault, also comprise:
Determine that the not identical also not close plunger of rail pressure rising average is fault plunger.
Present invention also offers a kind of high-pressure plunger oil pump feed Fail detecting apparatus, comprising:
Acquisition module, for obtaining the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
Computing module, for the rail pressure value of the N number of crankshaft signal tooth according to the fuel feeding cycle corresponding with each plunger, calculates the rail pressure rising average of each plunger;
First judge module, whether identical or close for judging the rail pressure rising average of all plungers, if equal or close, then judge that oil pump is normal, otherwise, judge that oil pump exists fuel feeding fault.
Preferably, described device also comprises:
Judging enable module, for judging that whether plunger-type fuel pump is in stable operation situation, if so, performing process fault detection, otherwise, do not perform process fault detection.
Preferably, described judgement enable module, comprising:
Gather submodule, for gathering the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature;
Decision sub-module, whether the running parameter judging described collection is in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
Preferably, described computing module, comprising:
Difference submodule, for calculate N number of crankshaft signal tooth in each fuel feeding cycle rail pressure value in difference between maxima and minima, described difference is the rail pressure rising value in each fuel feeding cycle;
Average submodule, for the corresponding relation according to described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtains the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.
Preferably, described first judge module, comprising:
Ratio submodule one, for calculating the ratio of the rail pressure rising average of every two plungers;
Judge submodule one, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Preferably, described first judge module, comprising:
Average submodule one, for calculating a mean value of the rail pressure rising average of all plungers;
Ratio submodule two, for calculating the ratio between the rail pressure rising average of each plunger and described mean value successively;
Judge submodule two, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Preferably, described device also comprises: determination module, for determining that the not identical also not close plunger of rail pressure rising average is fault plunger.
As can be seen from the above-described embodiment, disclosed by the inventionly provide a kind of high-pressure plunger oil pump feed fault detection method and device, obtain the rail pressure value of the crankshaft signal tooth in each fuel feeding cycle at least one work cycle; According to the rail pressure value of the crankshaft signal tooth in the fuel feeding cycle corresponding with each plunger, calculate the rail pressure rising average of each plunger; Judge that whether the rail pressure rising average of all plungers is identical or close, thus the unbalanced fault of high-pressure plunger oil pump can be determined, for the maintenance of system and Later development offer convenience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of high-pressure plunger oil pump feed fault detection method flow chart that the embodiment of the present invention one discloses;
Fig. 2 is the another kind of high-pressure plunger oil pump feed fault detection method flow chart that the embodiment of the present invention two discloses;
Fig. 3 is the another kind of high-pressure plunger oil pump feed fault detection method flow chart that the embodiment of the present invention three discloses;
Fig. 4 is the structural representation of a kind of high-pressure plunger oil pump feed Fail detecting apparatus that the embodiment of the present invention four discloses;
Fig. 5 is the structural representation of the another kind of high-pressure plunger oil pump feed Fail detecting apparatus that the present invention discloses.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 1, it is a kind of high-pressure plunger oil pump feed fault detection method flow chart that the embodiment of the present invention one discloses, and comprises the following steps:
Step 101: the rail pressure value obtaining N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
Step 102: according to the rail pressure value of N number of crankshaft signal tooth in the fuel feeding cycle corresponding with each plunger, calculates the rail pressure rising average of each plunger;
Step 103: judge that whether the rail pressure rising average of all plungers is identical or close;
Step 104: if equal or close, judge that oil pump is normal;
Step 105: otherwise, judge that oil pump exists fuel feeding fault.
Described step 102 comprises: calculate the difference between maxima and minima in the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle, described difference is the rail pressure rising value in each fuel feeding cycle;
According to the corresponding relation of described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtain the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.
Described step 103 comprises: the ratio calculating the rail pressure rising average of every two plungers;
Judge described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Can be found out by embodiment one, method provided by the invention, can determine whether high-pressure plunger oil pump exists fault, for the maintenance of whole high pressure co-rail system and later development offer convenience.
In order to set forth the present invention in more detail, check processing is carried out below for concrete high pressure co-rail system, in described system, transmitter is four-stroke 6 Cylinder engine, a work cycle comprises 6 fuel feeding cycles and 6 injection periods, high-pressure plunger oil pump is double-plunger oil pump, concrete grammar another kind of high-pressure plunger oil pump feed fault detection method as shown in Figure 2, comprises the steps:
Step 201: the rail pressure value obtaining 5 crankshaft signal teeth in each fuel feeding cycle in a work cycle;
Step 202: according to the rail pressure value of 5 crankshaft signal teeth in the fuel feeding cycle corresponding with each plunger, calculates the rail pressure rising average of each plunger;
Described step 202 comprises: calculate the difference between maxima and minima in the rail pressure value of 5 crankshaft signal teeth in each fuel feeding cycle, and described difference is the rail pressure rising value in each fuel feeding cycle;
There are 6 fuel feeding cycles an operation cycle, then calculate the difference between maxima and minima in the rail pressure value of 5 crankshaft signal teeth in calculating each fuel feeding cycle in each fuel feeding cycle, then calculate three odd number fuel feeding Periodic Orbits to press appreciation and be respectively 0.036*106hPa, 0.036*106hPa, 0.037*106hPa, obtain three even cycle rail pressure rising values and be respectively 0.035*106hPa, 0.034*106hPa, 0.035*106hPa.
According to the corresponding relation of described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtain the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.
According to corresponding first plunger of odd cycle, corresponding second plunger of even cycle, then utilize the rail pressure rising value of above-mentioned three odd cycle to calculate the rail pressure rising average that odd number rail pressure rising average is 0.0363*106hPa and described first plunger; Utilizing above-mentioned three even cycle rail pressure rising values to calculate even number rail pressure rising average is 0.0347*106hPa, i.e. the rail pressure rising value of second plunger.
Step 203: judge that whether the rail pressure rising average of two plungers is identical or close;
Step 204: if identical or close, judge that oil pump is normal;
Step 205: otherwise, judge that oil pump exists fuel feeding fault.
Specifically comprise: the ratio calculating the rail pressure rising average of two plungers; Judge described ratio whether all within the scope of the error burst preset; If all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.Be specially: the ratio then calculating the rail pressure rising average of the first plunger and the rail pressure rising average of the second plunger, namely 0.0363*106hPa/0.0347*106hPa obtains ratio is 1.048.If the error burst scope preset is 0.8-1.2, then this plunger pump fault-free.If result of calculation exceeds this scope, there is fuel feeding fault in oil pump.
The detecting method provided in the present embodiment is for concrete system, the crankshaft signal tooth in the operation cycle adopted and each fuel feeding cycle of collection can set according to actual detection case, and for different systems, the situation of different motors and multiple plunger-type fuel pump, can set according to detection actual conditions, not make considered critical at this.
When for system comprise the detection of 3 plunger-type fuel pumps time, method provided by the invention method flow diagram as shown in Figure 3, comprises the following steps:
Step 301: the rail pressure value obtaining N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
Be specially: obtain 2 work cycle, totally 12 fuel feeding cycles, the rail pressure value of 10 crankshaft signal teeth in each fuel feeding cycle.
Step 302: according to the rail pressure value of N number of crankshaft signal tooth in the fuel feeding cycle corresponding with three plungers, calculate the rail pressure rising average of each plunger;
Be specially: calculate the difference between maxima and minima in the rail pressure value of 10 crankshaft signal teeth in each fuel feeding cycle, described difference is the rail pressure rising value in each fuel feeding cycle;
According to the corresponding relation of described fuel feeding cycle and plunger, that is, 1 and 4,2 and 5,3 and 6, respectively corresponding 1st, 2,3 plungers, from the rail pressure rising value in described 12 fuel feeding cycles, obtain the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.Namely, the rail pressure rising value of the 1st plunger, the average A1 of rail pressure rising value in the 1st and 4 fuel feeding cycles, the rail pressure rising value of the 2nd plunger, the average A2 of rail pressure rising value in the 2nd and 5 fuel feeding cycles, the rail pressure rising value of the 3rd plunger is the average A3 of rail pressure rising value in the 3rd and 6 fuel feeding cycles.
Step 303: judge that whether the rail pressure rising average of three plungers is identical or close;
Step 304: if close, judges that oil pump is normal;
Step 305: otherwise, judge that oil pump exists fuel feeding fault.
Be specially: judge A1, A2, A3 successively, ratio between any two, if ratio is all in predetermined margin of error, then oil pump fault-free, otherwise there is fuel feeding fault in this oil pump.
Also can be specially: the average A calculating A1, A2, A3 three, then calculates A1/A, A2/A respectively, A3/A tri-ratios, finally judge these three ratios whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Certainly, no matter as long as adopt any computational methods can contrast the disequilibrium of the rail pressure rising average of three plungers, just can judge whether oil pump exists fault.
Also comprised before above-mentioned faut detection: under judging whether plunger-type fuel pump exists stable operation situation, if so, perform process fault detection, otherwise, do not perform process fault detection.
Be specially: gather the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature;
Whether the running parameter judging described collection is in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
Can certainly other parameters in judgement system, be in nominal situation as long as the system that can detect is current, then just perform process fault detection, otherwise do not perform.
After there is fuel feeding fault in above-mentioned faut detection determination oil pump, can be further, determine that the not identical also not close plunger of rail pressure rising average is fault plunger.Be specially: when the A1/A detected in above-described embodiment three is not within the scope of the error burst preset, A2/A and A3/A within the scope of the error burst preset, then can determine that the first plunger exists fuel feeding fault.
For the detection of multiplunger high pressure co-rail system, according to the actual number of plungers of system and fuel feeding cycle corresponding relation, the rail pressure value of the song wheel signal teeth meeting testing requirement can be gathered, carries out judgement process.
Visible, embodiment of the present invention high-pressure plunger oil pump feed fault detection method, by obtaining the rail pressure of the song wheel signal teeth in each cycle, obtain the rail pressure rising value in each cycle, then can judge the rail pressure rising average of each plunger, and then the balance between plunger can be judged, determine whether oil pump exists fault, can determine that plunger exists fault accurately, so that staff carries out keeping in repair targetedly or the operation such as later development.
Embodiment four
The present invention also provides a kind of high-pressure plunger oil pump feed Fail detecting apparatus.Structural representation as shown in Figure IV, specifically comprises: acquisition module 401, computing module 402 and the first judge module 403,
Acquisition module 401, for obtaining the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
Computing module 402, for the rail pressure value of the N number of crankshaft signal tooth according to the fuel feeding cycle corresponding with each plunger, calculates the rail pressure rising average of each plunger;
Can specifically comprise: difference submodule 402A, for calculate N number of crankshaft signal tooth in each fuel feeding cycle rail pressure value in difference between maxima and minima, described difference is the rail pressure rising value in each fuel feeding cycle;
Average submodule 402B, for the corresponding relation according to described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtains the rail pressure rising average in the fuel feeding cycle corresponding with each plunger.
First judge module 403, whether identical or close for judging the rail pressure rising average of all plungers, if equal or close, then judge that oil pump is normal, otherwise, judge that oil pump exists fuel feeding fault.
Can specifically comprise: ratio submodule one, for calculating the ratio of the rail pressure rising average of every two plungers; Judge submodule one, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
Can also specifically comprise: average submodule one, for calculating a mean value of the rail pressure rising average of all plungers;
Ratio submodule two, for calculating the ratio between the rail pressure rising average of each plunger and described mean value successively;
Judge submodule two, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
In order to determine the position that fault exists further, described device can further include: determination module, for determining that the not identical also not close plunger of rail pressure rising average is fault plunger.
Under being in steady-working state in system, carrying out check processing makes testing result more reliable, described device can further include: judge enable module 501, for judging that whether plunger-type fuel pump is in stable operation situation, if, perform process fault detection, otherwise, do not perform process fault detection.
Judge enable module 501, comprising: gather submodule 501A, for gathering the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature; Decision sub-module 501B, whether the running parameter judging described collection is in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
Then other modules of described device, under oil pump is in stable operation situation, start to perform check processing.Specifically as shown in Figure 5.
The device that the embodiment of the present invention provides, utilize the rail pressure of the song wheel signal teeth in each cycle obtained, carry out processing the fuel feeding disequilibrium detected between each plunger, judge whether oil pump feed exists fault, the present invention can detect the arbitrary system of high-pressure common rail plunger oil pump that adopts, there is stronger transplantability adaptability, the guilty culprit of system of determining plunger-type fuel pump that can be accurate and visual, avoid the workload of common group of personnel, improve maintenance efficiency, the later development of system is also offered convenience simultaneously.
Above a kind of high-pressure plunger oil pump feed fault detection method provided by the present invention and device are described in detail, apply specific embodiment 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 (12)
1. a high-pressure plunger oil pump feed fault detection method, is characterized in that, process fault detection comprises:
Obtain the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
According to the rail pressure value of N number of crankshaft signal tooth in the fuel feeding cycle corresponding with each plunger, calculate the rail pressure rising average of each plunger, specifically comprise: calculate the difference between maxima and minima in the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle, described difference is the rail pressure rising value in each fuel feeding cycle; According to the corresponding relation of described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtain the rail pressure rising average in the fuel feeding cycle corresponding with each plunger;
Judge that whether the rail pressure rising average of all plungers is identical or close, if identical or close, judge that oil pump is normal, otherwise, judge that oil pump exists fuel feeding fault.
2. method according to claim 1, is characterized in that, before execution faut detection, described method also comprises: judge that whether plunger-type fuel pump is in stable operation situation;
If so, process fault detection is performed, otherwise, do not perform process fault detection.
3. method according to claim 2, is characterized in that, describedly judges that whether plunger-type fuel pump is in stable operation situation, comprising:
Gather the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature;
Judge the described running parameter that gathers whether in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
4. method according to claim 1, is characterized in that, describedly judges that whether the rail pressure rising average of all plungers is close, comprising:
Calculate the ratio of the rail pressure rising average of every two plungers;
Judge described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
5. method according to claim 1, is characterized in that, describedly judges that whether the rail pressure rising average of all plungers is close, comprising:
Calculate a mean value of the rail pressure rising average of all plungers;
Calculate the ratio between the rail pressure rising average of each plunger and described mean value successively;
Judge described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
6. method according to claim 1, is characterized in that, after determining that oil pump exists fuel feeding fault, also comprises:
Determine that the not identical also not close plunger of rail pressure rising average is fault plunger.
7. a high-pressure plunger oil pump feed Fail detecting apparatus, is characterized in that, comprising:
Acquisition module, for obtaining the rail pressure value of N number of crankshaft signal tooth in each fuel feeding cycle at least one work cycle, described N is the natural number being more than or equal to 2 and being less than or equal to the crankshaft signal number of teeth that rail pressure rising is corresponding in the fuel feeding cycle;
Computing module, for the rail pressure value of the N number of crankshaft signal tooth according to the fuel feeding cycle corresponding with each plunger, calculates the rail pressure rising average of each plunger; Described computing module, comprising: difference submodule, for calculate N number of crankshaft signal tooth in each fuel feeding cycle rail pressure value in difference between maxima and minima, described difference is the rail pressure rising value in each fuel feeding cycle; Average submodule, for the corresponding relation according to described fuel feeding cycle and plunger, from the rail pressure rising value in described each fuel feeding cycle, obtains the rail pressure rising average in the fuel feeding cycle corresponding with each plunger;
First judge module, whether identical or close for judging the rail pressure rising average of all plungers, if equal or close, then judge that oil pump is normal, otherwise, judge that oil pump exists fuel feeding fault.
8. device according to claim 7, is characterized in that, described device also comprises:
Judging enable module, for judging that whether plunger-type fuel pump is in stable operation situation, if so, performing process fault detection, otherwise, do not perform process fault detection.
9. device according to claim 8, is characterized in that, described judgement enable module, comprising:
Gather submodule, for gathering the running parameter of motor, described running parameter comprises: any one or any number of in fuel injection quantity, crank teeth rotating speed, common rail pipe rail pressure and engine coolant temperature;
Decision sub-module, judge the described running parameter that gathers whether in its respective normal range of operation, if in normal range of operation, then oil pump is in stable operation situation, otherwise oil pump is not in stable operation situation.
10. device according to claim 7, is characterized in that, described first judge module, comprising:
Ratio submodule one, for calculating the ratio of the rail pressure rising average of every two plungers;
Judge submodule one, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
11. devices according to claim 7, is characterized in that, described first judge module, comprising:
Average submodule one, for calculating a mean value of the rail pressure rising average of all plungers;
Ratio submodule two, for calculating the ratio between the rail pressure rising average of each plunger and described mean value successively;
Judge submodule two, for judging described ratio whether all within the scope of the error burst preset, if all exist, then oil pump fault-free, otherwise there is fuel feeding fault in oil pump.
12. devices according to claim 7, is characterized in that, also comprise:
Determination module, for determining that the not identical also not close plunger of rail pressure rising average is fault plunger.
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| CN201210532939.3A CN103047125B (en) | 2012-12-11 | 2012-12-11 | Oil pump feeding fault detecting method and device of high-pressure plunger-type fuel pump |
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| CN201210532939.3A CN103047125B (en) | 2012-12-11 | 2012-12-11 | Oil pump feeding fault detecting method and device of high-pressure plunger-type fuel pump |
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| CN103047125B true CN103047125B (en) | 2015-07-08 |
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| CN105804984B (en) * | 2014-12-31 | 2018-05-08 | 中国石油天然气股份有限公司 | The fault diagnosis method and system of electric oil-immersed plunger pump |
| CN109695564B (en) * | 2017-10-20 | 2020-09-01 | 郑州宇通客车股份有限公司 | Fault detection method and system for electric air compressor |
| 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 |
| CN114592984B (en) * | 2022-03-14 | 2023-08-18 | 潍柴动力股份有限公司 | Rail pressure sensor verification method, device and equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489551A (en) * | 1983-01-19 | 1984-12-25 | Hitachi Construction Machinery Co., Ltd. | Failure detection system for hydraulic pump |
| 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 |
| DE102010043236A1 (en) * | 2009-11-04 | 2011-05-12 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Fault diagnosis device for a fuel pressure sensor |
| CN102182601A (en) * | 2011-02-01 | 2011-09-14 | 潍柴动力股份有限公司 | Method and device for diagnosing and calibrating faults in high-pressure common rail system |
| CN202091080U (en) * | 2011-02-01 | 2011-12-28 | 潍柴动力股份有限公司 | Device for diagnosing faults in the high-pressure co-rail system of engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003028076A (en) * | 2001-07-12 | 2003-01-29 | Hitachi Ltd | Pump abnormality diagnostic device |
| JPWO2011007772A1 (en) * | 2009-07-15 | 2012-12-27 | ボッシュ株式会社 | Pressure sensor failure diagnosis method and common rail fuel injection control device |
-
2012
- 2012-12-11 CN CN201210532939.3A patent/CN103047125B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489551A (en) * | 1983-01-19 | 1984-12-25 | Hitachi Construction Machinery Co., Ltd. | Failure detection system for hydraulic pump |
| 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 |
| DE102010043236A1 (en) * | 2009-11-04 | 2011-05-12 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | Fault diagnosis device for a fuel pressure sensor |
| CN102182601A (en) * | 2011-02-01 | 2011-09-14 | 潍柴动力股份有限公司 | Method and device for diagnosing and calibrating faults in high-pressure common rail system |
| CN202091080U (en) * | 2011-02-01 | 2011-12-28 | 潍柴动力股份有限公司 | Device for diagnosing faults in the high-pressure co-rail system of engine |
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