CN1140235A - Method for testing fuel flow transported via nozzle of diesel-fuel jet pump for diesel engine - Google Patents
Method for testing fuel flow transported via nozzle of diesel-fuel jet pump for diesel engine Download PDFInfo
- Publication number
- CN1140235A CN1140235A CN96106012A CN96106012A CN1140235A CN 1140235 A CN1140235 A CN 1140235A CN 96106012 A CN96106012 A CN 96106012A CN 96106012 A CN96106012 A CN 96106012A CN 1140235 A CN1140235 A CN 1140235A
- Authority
- CN
- China
- Prior art keywords
- fuel
- amount
- absolute
- injection
- pressure history
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims description 17
- 239000002283 diesel fuel Substances 0.000 title description 2
- 238000002347 injection Methods 0.000 claims abstract description 51
- 239000007924 injection Substances 0.000 claims abstract description 51
- 238000005259 measurement Methods 0.000 claims description 20
- 230000010354 integration Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 38
- 238000010586 diagram Methods 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
Abstract
The present invention relates to a method for determining the fuel quantity fed by an injection pump to fuel injectors in a diesel engine. Adopting the following project can easily calculate the corresponding quantity of fuel, fed to a display. The characteristic pressure curves are normalised and the surface integral of normalised curve is calculated, with the actual fuel quantity calculated using a proportionality constant. The method of the present invention and corresponding apparatus can be used to determine the fuel quantity or as a check for at least one fuel injection channel.
Description
The present invention relates to a kind of method that detects the diesel engine Injection Pump through the amount of fuel of nozzle conveying, adopt the method the pressure history in the injection line the course of conveying from Injection Pump to nozzle to be detected and derives thus amount of fuel.In addition, the present invention relates to a kind of instrument that shows the diesel-oil vehicle oil consumption, this instrument has a computing device and a display unit, and relate to a kind of diesel engine fuel injection pump tester, this test stand has the surveying instrument of a detection amount of fuel, this amount of fuel is to export through the single line of leading to nozzle, and this surveying instrument has a computing device and a display unit, and this display unit is used to show the amount of fuel of independent pipeline.
DE3118425C2 has put down in writing this method.This known method utilizes one to be arranged on that voltage sensitive sensor between Injection Pump and nozzle detects pressure history and by the pressure history differential being obtained the course of injection time and being derived the emitted dose signal, this signal will be used to adjust amount of fuel.What also will mention a bit is by deriving a magnitude signal to beginning from discharge time to the integration of the pressure history tailend, wherein to adopt this mode surely not to draw comparatively approaching data.Be difficult to accurately detect absolute amount of fuel with this mode.
Knownly in window glass, collect every independent pipeline amount of fuel that carry or that spray of a plurality of independent injections and on calibrated scale, read the amount of fuel that every independent pipeline is carried when on test stand, detecting.The cost of paying when adopting the method is very big.The known in addition measure that a volumetric measurement device all is set for every independent pipeline on test stand, its technology cost is too big and expensive.
The objective of the invention is to propose a kind ofly can accurately realize the absolute measurement of the amount of fuel of carrying and be with a kind of cheap measuring device realization through the wall scroll injection line.Propose a kind of instrument and a kind of test stand that shows oil consumption in addition, adopt these two kinds of devices can be accurately and simply and adopt cheap means to determine the amount of fuel of carrying.
The application that gives this method in addition may.
Adopt claim 1,6,8,9 and 11 feature has realized this purpose.
Answering pressure change curve standardization during with the method then carries out to standardized pressure history that area divides and by obtaining absolute amount of fuel with the proportionality constant weighting.
Owing to pressure history has been carried out standardization, thereby has eliminated common because of manufacturing and measure the discrete life of disposing the very big Pressure testing that causes.The area branch of standardized pressure history is directly proportional with absolute amount of fuel and is proved, is determine absolute amount of fuel comparatively stable, reliably value.
Especially all be equipped with in the serial connection jet pump of a jet pump ejection assemblies at those each cylinders, the measure of measuring definite absolute amount of fuel that conforms to the wall scroll pressure history according to additional volume is very useful.Therefore for example on a test stand, not only can accurately judge the amount of fuel that every independent pipeline is carried, and can carry out the direct comparison between different pipelines according to the jet pump of different adjustment standard calibration.Compare with traditional window glass process, promptly compare with the method for the amount of fuel of on window every independent pipeline reading a plurality of independent injections on glass, carrying or spraying, it is much rapid and simple that method given here is wanted, wherein on fluoroscope, can realize showing, thereby the reading error minimum.Compare with the known method that every independent pipeline is carried out volumetric measurement, this kind method expense is cheap.
The preferred embodiment of implementing the method is, all injection line are carried out in the lump that additional volume is measured and will be distributed by total amount of fuel that volumetric measurement is examined and determine out according to the relative amount of fuel of the independent pipeline of obtaining by the area branch when determining the absolute amount of fuel of independent pipeline, and another selection scheme is, only an injection line is carried out the additional absolute volume measurement of amount of fuel, will by the area branch that obtain with the corresponding relative amount of fuel of pressure history independent pipeline, constant is distributed to the absolute value that absolute amount of fuel and proportion of utilization constant are determined other single line amount of fuel in proportion.
Spraying delivery side of pump is the active position of detected pressures change curve.
A kind of useful application of this method is, adopts the mode of explaining in claim to a method to detect the oil consumption of automobile.Simultaneously can also calculate and demonstrate moment and/or average consumprion.Here can show by the integration of many independent pressure histories that spray being realized even instantaneous oil consumption.
The application scheme that another of this method is useful is the check to jet pump, wherein on the basis of relative amount of fuel or absolute amount of fuel, constitute demonstration, can identify the deviation of every independent pipeline and given situation and/or the deviation between independent pipeline according to this demonstration.It is very useful that this application is combined with the serial connection jet pump, thereby this is because can detect 12 injection line like this and can reduce time loss and cost of equipment greatly.
The solution of this purpose is in the device that shows oil consumption, an oil transportation letter writing sensor is set between jet pump and nozzle at least, one of this sensor output and the normalized signal of the corresponding pressure history form of injection separately, the computing device that is used to form pressure history area branch has an integral unit and has a classification distributor, utilizes this classification distributor and area subdivision can distribute absolute fuel consumption values.
Owing to adopted the oil transportation signal emitter, can derive oil consumption and show signal, thereby no longer need additional expensive fuel consumption measuring device, wherein with described measure simply mode realize fuel consumption measurement.Both instantaneous fuel consumption values can be demonstrated, average fuel consumption value or total oil consumption can be demonstrated again.Adopt known display unit can realize these schemes.
The useful structure that is used to derive the oil consumption signal is, the classification distributor has a comparing unit and fuel consumption data table or multiplying assembly and fuel consumption data can be transmitted to display unit and demonstrate or make the classification distributor and display unit constitutes one on display unit.
In diesel engine jet pump test stand, the scheme that realizes this purpose is, measuring device has an oil transportation signal emitter at least, go out pressure history and standardized output signal of this sensor output of every injection line with this sensor, utilize integral unit to determine the amount of fuel data that area branch or pressure history and derivation are directly proportional with the area branch in computing device, these amount of fuel data are fed to display unit.Because oil transportation signal emitter in the serial connection jet pump or the output of a plurality of oil transportation signal emitter is standardized output signal, thereby not only can carry out the comparison of amount of fuel between each injection line very reliably, can also provide amount of fuel as the independent pipeline of absolute value.
Be to improve the validity of absolute value, except that the oil transportation signal emitter, measuring device should have plethysmometer, measures the absolute amount of fuel of all injection line in the lump or only measures the absolute amount of fuel of an injection line with this measuring appliance.The structure example here is as being, computing device has a stage circuit that the absolute measurement result of area branch and plethysmometer is linked together, utilize this circuit can determine that area divides and the absolute measurement result of plethysmometer between relation, and derive the absolute amount of fuel of each injection line according to this relation.
The present invention is described further will to contrast accompanying drawing by embodiment below, shown in the figure:
Fig. 1 is standardized pressure history,
Fig. 2 be statement each handle level schematic block diagram and
Fig. 3 is the block diagram that signal statement second embodiment mainly handles level.
Fig. 1 illustrates standardized pressure history D, and it is identical that this curve and is arranged on the curve that the oil transportation signal emitter as voltage sensitive sensor between oil transfer pump and cylinder obtained.Fig. 2 is the block diagram that schematically statement shows each continuous level of amount of fuel.Utilize an oil transportation signal emitter FSS to detect and flow to computing device AE1 as standardization pressure history D by the pressure history that distributes oil transfer pump VFP to spray separately and with it.Computing device AE1 begins oil transportation and the pressure history D between oil transportation tailend carries out area and divides and integral result is passed to display device AZ, and this display device for example is shown to the amount of fuel of carrying the operator of driver or test stand.
In distributing jet pump VFP, in the oil transfer pump outlet oil transportation signal emitter FSS being set for all injection line of leading to each cylinder just is enough to meet the demands.For example derive the oil consumption signal, the area branch result of the pressure history D that forms can be distributed to the fuel consumption data that will flow to display device accordingly in computing device AE1 for the classification distributor that has comparing unit and a fuel consumption data table at.Also can select a multiplying assembly is set in computing device AE1, in this device area branch result be multiply by proportionality constant, wherein the understanding of the ratio between the opposite integration and the amount of fuel of carrying in the variation in pressure process is foundation with the process.Also can be in display unit for example by scale area being divided between the amount of fuel with demonstration as another selection scheme matches.In computing device AE1, can produce the video data of the total amount of fuel that is used to show transient fuel amount, average fuel amount or carries within a certain period of time and give display device this data delivery.
In Fig. 3, schematically show another embodiment who detects and show amount of fuel.The oil transfer pump here is the serial connection oil transfer pump RFP that has 6 outlets or pipeline road.Each oil transportation assembly of serial connection oil transfer pump RFP is equipped with the oil transportation signal emitter FSS of a detected pressures change curve D between its outlet and the nozzle of attaching troops to a unit.At this, oil transportation signal emitter FSS is at the pressure history D of its output terminal also outputting standardization, and this curve is fed to computing device AE2, adopts aforesaid way to obtain amount of fuel and flow to display unit AZ in this device.Described here as the foregoing description, also can as the function of each oil transportation assembly of test stand judgement serial connection oil transfer pump is desired, show the amount of fuel of each independent pipeline side by side in principle.Relative deviation between each injection line amount of fuel measurement result is the reliable foundation of diagnosing and adjusting on test stand.Because pressure history standardization and have definite measuring condition on test stand is accurate so utilize the detected absolute amount of fuel of each oil transportation signal emitter FSS basically.
Need show under the situation of the absolute amount of fuel that detects with pinpoint accuracy more, can utilize a plethysmometer VM to total amount of fuel of carrying through all injection line or only injection line amount of fuel of carrying add measurement.In computing device AE2, can accurately determine the absolute amount of fuel of single line then.If adopt plethysmometer VM measure all injection line the fuel oil total amount can be in computing device AE2 according to by the relative share of the detected amount of fuel of oil transportation signal emitter FSS total amount of fuel being distributed in each injection line.If only on an independent injection line, adopt plethysmometer VM to add measurement, then the detected amount of fuel of oil transportation signal emitter FSS by this injection line is equal to the amount of fuel that goes out with volumetric measurement and treats, and can very accurately definitely determine the amount of fuel that adopts detected other injection line of oil transportation signal emitter FSS and pass to display device by corresponding conversion then.
With usually on test stand, for example must in each window glass, make up the amount of fuel of every independent injection line of collection and compare by the method that operator read to 1,000 independent injections, want much simple at the automated process described in Fig. 3, and on display device AZ, can combine and look at measurement result and can be clearly, utilize additional information to explain in case of necessity, thereby simplified and judged and adjustment.Compare with the test stand that a plethysmometer is set for every injection pipe, this method expense is very cheap, this be because plethysmometer manufacture cost big and thereby very expensive, and above-mentioned oil transportation signal emitter price is cheap especially and easy to use.Especially for example have in the serial connection oil transfer pump of truck of 12 injection line and corresponding oil transportation assembly, these advantages are particularly evident.
And in second embodiment, identically with first embodiment can obtain the fuel consumption measurement signal be used on automobile, showing by computing device AE2 according to Fig. 3.
Claims (13)
1. detect the method for diesel engine Injection Pump through the amount of fuel of nozzle conveying, detect between Injection Pump and nozzle during the oil transportation process pressure history of injection tubing when adopting the method and derive amount of fuel thus, it is characterized in that: pressure history is carried out standardization, and then area divides and absolute amount of fuel is determined in the weighting of employing proportionality constant to carrying out through standardized pressure history.
2. according to the method for claim 1, it is characterized in that: at least the additional absolute volume that carries out amount of fuel of an injection tubing is measured and determined the absolute amount of fuel that conforms to each independent pressure history according to volume measurements.
3. according to the method for claim 2, it is characterized in that: all injection tubings are carried out in the lump that additional volume is measured and according to the relative amount of fuel of the single line of obtaining by the area branch total amount of fuel of examining and determine out by volumetric measurement distributed when determining the absolute amount of fuel of single line.
4. according to the method for claim 2, it is characterized in that: only an injection line is carried out the additional absolute volume measurement of amount of fuel, the pressure history of absolute amount of fuel being distributed to by corresponding single line according to proportionality constant carries out the relative amount of fuel that the area branch draws, and the proportion of utilization constant is determined the absolute value of other injection line amount of fuel.
5. a described method in requiring according to aforesaid right is characterized in that: at the oil spout delivery side of pump pressure history is detected.
6. adopt the method for the measured automobiles oil consumption of aforesaid right in requiring, wherein calculate and show instantaneous and/or the average oil consumption.
7. according to the method for using in the claim 6, it is characterized in that: on the basis of the pressure history integration that many are sprayed separately, realize demonstration instantaneous oil consumption.
8. with the method for a check jet pump in the claim 1 to 5, wherein on the basis of relative or absolute amount of fuel, realize showing, identify the deviation of every injection line and given state and/or the deviation between injection line according to demonstration.
9. vehicle oil wear indication and have computing device and the instrument of display unit, it is characterized in that: an oil transportation signal emitter (FSS) is set between Injection Pump and nozzle at least, the normalized signal of pressure history (D) form that conforms to independent injection of this sensor output, computing device (AE1, AE2) has the integral unit that is used to form pressure history (D) area branch, and have a classification distributor, the area score value can be distributed to absolute fuel consumption values with this.
10. according to the instrument of claim 9, it is characterized in that: the classification distributor has a comparing unit and a fuel consumption data table or an oil consumption multiplying assembly, fuel consumption data is passed to display unit (AZ) and shows on display unit or makes classification distributor and display unit (AZ) formation one.
11. diesel engine jet pump test stand, have the surveying instrument that detects amount of fuel, this amount of fuel is that the injection line through leading to nozzle is exported, also have a computing device and a display unit, this display unit is used to show the amount of fuel of injection line, it is characterized in that: surveying instrument has an oil transportation signal emitter (FSS) at least, pressure history (D) and standardized signal of this sensor output with every injection line of this sensor, computing device (AE1, AE2) area that utilizes an integral unit to determine pressure history divides and derives proportional therewith amount of fuel data, gives display unit with this data delivery.
12. test stand according to claim 11, it is characterized in that: surveying instrument is except that oil transportation signal emitter (FSS), also has a plethysmometer (VM), with the amount of fuel of this measuring appliance all injection line of absolute measurement in the lump or the amount of fuel of an independent injection line of absolute measurement only.
13. test stand according to claim 12, it is characterized in that: computing device (AE2) has a stage circuit, and this stage circuit divides area absolute measurement result with plethysmometer (VM) to link together and according to the absolute amount of fuel that derives each injection line than relation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19516923A DE19516923A1 (en) | 1995-05-09 | 1995-05-09 | Method for detecting the amount of fuel delivered by an injection pump of a diesel engine via the injection nozzles |
| DE19516923.9 | 1995-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1140235A true CN1140235A (en) | 1997-01-15 |
| CN1068934C CN1068934C (en) | 2001-07-25 |
Family
ID=7761419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96106012A Expired - Fee Related CN1068934C (en) | 1995-05-09 | 1996-05-06 | Method for testing fuel flow transported via nozzle of diesel-fuel jet pump for diesel engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0742361B1 (en) |
| CN (1) | CN1068934C (en) |
| DE (2) | DE19516923A1 (en) |
| ES (1) | ES2174985T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240751B (en) * | 2007-02-06 | 2011-04-06 | 通用汽车环球科技运作公司 | Post catalyst oxygen sensor diagnosis |
| CN104895721A (en) * | 2015-04-09 | 2015-09-09 | 赵军政 | Intelligent oil nozzle |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19700738C1 (en) * | 1997-01-11 | 1998-04-16 | Daimler Benz Ag | Fuel injection priming charge regulation method for IC engines |
| DE19726756C2 (en) * | 1997-06-24 | 2002-03-07 | Bosch Gmbh Robert | System for operating an internal combustion engine, in particular a motor vehicle |
| DE19740608C2 (en) | 1997-09-16 | 2003-02-13 | Daimler Chrysler Ag | Method for determining a fuel injection-related parameter for an internal combustion engine with high-pressure accumulator injection system |
| DE19844602A1 (en) | 1998-09-29 | 2000-03-30 | Bosch Gmbh Robert | Method and device for measuring the angular distribution of a liquid jet |
| DE19908678C5 (en) * | 1999-02-26 | 2006-12-07 | Robert Bosch Gmbh | Control of a direct injection fuel internal combustion engine of a motor vehicle, in particular during startup operation |
| DE102006034514B4 (en) * | 2006-07-26 | 2014-01-16 | Mtu Friedrichshafen Gmbh | Method for controlling an internal combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3118425A1 (en) * | 1981-05-09 | 1982-12-09 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR DETECTING THE AMOUNT OF FUEL SUPPLIED TO THE COMBUSTION SPACES OF A DIESEL ENGINE |
| ATE67591T1 (en) * | 1985-12-09 | 1991-10-15 | Toyota Motor Co Ltd | MEASURING DEVICE FOR MEASURING A FUEL INJECTION AMOUNT. |
| JP2867007B2 (en) * | 1993-01-27 | 1999-03-08 | トヨタ自動車株式会社 | Fuel injection end timing detection device for internal combustion engine |
-
1995
- 1995-05-09 DE DE19516923A patent/DE19516923A1/en not_active Withdrawn
-
1996
- 1996-01-23 ES ES96100863T patent/ES2174985T3/en not_active Expired - Lifetime
- 1996-01-23 DE DE59609080T patent/DE59609080D1/en not_active Expired - Fee Related
- 1996-01-23 EP EP96100863A patent/EP0742361B1/en not_active Expired - Lifetime
- 1996-05-06 CN CN96106012A patent/CN1068934C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101240751B (en) * | 2007-02-06 | 2011-04-06 | 通用汽车环球科技运作公司 | Post catalyst oxygen sensor diagnosis |
| CN104895721A (en) * | 2015-04-09 | 2015-09-09 | 赵军政 | Intelligent oil nozzle |
| CN104895721B (en) * | 2015-04-09 | 2017-12-22 | 宁波高新区世代能源科技有限公司 | Intelligent atomizer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0742361A3 (en) | 1998-10-14 |
| DE59609080D1 (en) | 2002-05-23 |
| ES2174985T3 (en) | 2002-11-16 |
| EP0742361A2 (en) | 1996-11-13 |
| DE19516923A1 (en) | 1996-11-14 |
| EP0742361B1 (en) | 2002-04-17 |
| CN1068934C (en) | 2001-07-25 |
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