CN101631952A - Test device and method for checking injection components - Google Patents
Test device and method for checking injection components Download PDFInfo
- Publication number
- CN101631952A CN101631952A CN200880005754.9A CN200880005754A CN101631952A CN 101631952 A CN101631952 A CN 101631952A CN 200880005754 A CN200880005754 A CN 200880005754A CN 101631952 A CN101631952 A CN 101631952A
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- Prior art keywords
- pressure
- unit
- variation
- generation unit
- control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/003—Measuring variation of fuel pressure in high pressure line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing
Abstract
The invention relates to a test device for checking injection components, comprising a control unit, a pressure generating unit (10, 110, 210) selected by the control unit (50, 150, 25), and a test specimen holding unit (40, 140, 240, 340), which is equipped for connecting a test specimen and connected to the pressure generating unit, wherein the controller selects the pressure generating unit such that the pressure generating unit on the test specimen holding unit provides different, selectable pressure curves for the test specimen that can be connected. The invention further relates to a method for checking injection components, comprising the following steps: generating a first pressure curve by means of a pressure generating unit; adjusting the pressure generating unit to a second pressure curve, which differs from the first pressure curve; and generating a second pressure curve by means of the pressure generating unit, wherein the adjusting of the pressure generating unit comprises the adjusting of a selection of the pressure generating unit without performing physical adjustments on the pressure generating unit.
Description
Technical field
The present invention relates to a kind of testing apparatus that pressure is opened in first of nozzle holder combination that is used to detect.This testing apparatus is used to measure first of nozzle holder combination that connected, to be detected and opens pressure.Open pressure for second of gaging nozzle holder combination, use another additional testing apparatus.Usually, be used in combination APU and the optional thermostatic system that comprises the oily generator of detection, in-line arrangement pump (Reihenpumpe), manometer, electricity for detecting nozzle holder.
Background technique
Usually, in internal-combustion engine, replace also can using sparger as the nozzle holder combination of injecting-unit.Be the test sparger, another testing apparatus is essential.The system that is used to test sparger comprise detect oily generator, by means of APU, system for measuring quantity and the pressure and temperature controlling device of the electricity of the pressure generator of drive unit and high-pressure service pump, sparger.
For detecting various types of injecting-units in the automobile workshop, thereby essential a plurality of equipment.This has caused the shortcoming aspect cost and locational requirement.
Summary of the invention
The present invention can realize the detection of dissimilar injecting-units with a single equipment.The present invention also makes can be by means of the different qualities of a single a kind of injecting-unit type of device measuring.Particularly, the invention enables and to open pressure with first and second of same system gaging nozzle holder combination.The present invention also makes and can detect nozzle holder combination and sparger by means of same equipment.According to the present invention, the same equipment that is used to detect pressure characteristic, emitted dose and the capacity of reflux of sparger detects the pressure characteristic of nozzle holder combination.
According to a design of the present invention, comprise the pressure generation unit according to testing apparatus of the present invention, this pressure generation unit is used to detect sparger and thereby corresponding, the time dependent variation in pressure process of common operation of foundation and sparger under first operating mode.In addition, described pressure generation unit is used for setting up under second operating mode and nozzle holder is combined in the corresponding variation in pressure process of common operating variation in pressure process, wherein under second operating mode, control this pressure generation unit, so that imitate the variation in pressure process of an in-line arrangement pump.Usually, use such pressure generation unit according to the present invention, this pressure generation unit can imitate the operation of different injecting-units or the running state that some is determined by control corresponding, and testing apparatus can be used for many different injecting-units thus.
Particularly common-rail high-pressure pump is suitable for as the pressure generation unit, and this common-rail high-pressure pump only is used to detect co-rail ejector according to prior art.According to the present invention, also can use this high-pressure service pump to detect the nozzle holder combination, wherein do not revise high-pressure service pump but only revise its control, make this high-pressure service pump imitation in-line arrangement pump characteristics.
Known according to another aspect of the present invention, the pressure generation unit of sparger test system also is suitable for first and second of test nozzles holder combination and opens pressure.Because to the electric control of the pressure generation unit that is used for sparger, the characteristic of pressure generation unit can change by this control, and needn't make physics and change machinery to the pressure generation unit.By to the suitable control of pressure generation unit, can imitate for example in-line arrangement pump characteristics by this way, this in-line arrangement pump is as a pressure generation unit that is used for the test system of nozzle holder combination.
According to the present invention, the pressure generation unit that at first is given for sparger is controlled like this, make it also imitate the characteristic of some pressure generation units like this, these pressure generation units imitate for unit injection device and the sparger that the nozzle holder that the nozzle holder that detection has an elastic support made up, had two elastic supports, cascade support made up, had electromagnetic coil.Perhaps, the pressure generation unit is controlled like this, the pressure generation unit of the test system that the sparger that makes its imitation be used to have the sparger of two electromagnetic coils or have piezoelectric actuator is used.
The present invention allows first and second of gaging nozzle holder combination to open pressure.In this manual, the pressure when reaching first pretravel with " first opens pressure " description discharges little outflow cross section under this first pretravel.In other words, open pressure first and be issued to such point, fuel stream minimum under this point is through the nozzle holder combination.If pressure continues to improve, then reach second and open pressure.This second is opened pressure and indicates and surpassed such pressure, increases and discharges bigger cross section thus from the stroke of this pressure valve needle.Therefore, this second is opened pressure and can discern like this, promptly owing to flow cross increases slowing down of occurring that pressure increases.Therefore, open pressure and can determine little flow, wherein reaching second that can determine after opening pressure to increase, the higher flows from reaching first.So, can produce all relevant force value, and can produce characteristic curve by measuring and receive flow simultaneously by suitably controlling high-pressure service pump.
When measuring the characteristic of sparger, control these spargers, detect oil so that provide off and on.The volume flow of this pulsed can be obtained by means of suitable built-in volume flowmeter, and this volume flowmeter has very little measurement inertia, so that can follow the pressure edge and the flow edge of quick rising and reduction.Perhaps, can make the volume flow of the pulsed cunning that flattens, its mode is to use flexible hydraulic pressure volume.This volume can produce like this, that is, the mask that surrounds this volume is had by spring-supported diaphragm.In this case, spring can receive and the fast-changing pressure of balance edge.Described volume flow is preferably controlled by this flexible hydraulic pressure volume, follows described volume flow by a throttle valve, and this throttle valve particularly causes further level and smooth with described hydraulic pressure volume in combination.Throttle valve can realize that this pipe preferred arrangements is in the detection oil fuel tank of controlled temperature by the pipe of thin-walled thin, that extend with the cooling spiral form of tubes.In this case, on described throttle valve, connect a volume flow measuring apparatus, wherein also can use measuring device more slowly, for example gear meter by smoothed volume flow.The elastic force that affacts on the diaphragm preferably is applied on the diaphragm face that is pushed away away by the hydraulic pressure volume by means of pressing plate.In this respect, passage or other volume can be set, this passage or other volume are balance pressure and directly or by throttle valve and surrounding environment or with volume under being in low pressure being connected.
According to another aspect of the present invention, comprise a control unit and a measuring device according to testing apparatus of the present invention, this measuring device is measured on injecting-unit to be tested or is passed through the pressure and the flow of this injecting-unit.This measuring device preferably includes a pressure transducer.In according to measuring device of the present invention, this measuring device not only is used to detect sparger but also is used to detect jet nozzles, for example nozzle holder combination, cascade support etc.Preferred foundation controlled, and so that dissimilar injecting-units is controlled like this according to their type separately, makes and controls normal operation, a common operating point of determining or critical operating point according to the type of injecting-unit respectively.Simultaneously, the preferred pilot pressure generation unit like this of control unit makes corresponding running state to occur on injecting-unit to be detected.In addition, also heating machanism can be set, so that aspect temperature, realize corresponding running state.Another design according to the present invention, described measuring device also is being to measure the pressure of described pressure generation unit and flow flexibly and preferably or measure these or other physical quantity on injecting-unit output terminal to be detected or on the measured piece grip unit aspect the injecting-unit to be detected.
According to another design of the present invention, testing apparatus comprises an analysis and processing unit, the value that this analysis and processing unit preferably is connected with described control unit and/or with described measuring device and comes analysing and processing to record with the analysis and processing method that depends on the jet pump type according to the physical quantity of setting.Because for injecting-unit designs and the common corresponding running state of the test system that is used for this type, so this analysis and processing method can be born by the testing apparatus of particular type, and these methods can be integrated in the device.
According to a kind of form of implementation of the present invention, described control is measured by one and control circuit board carries out.In addition, the data of being gathered, the data of for example described control unit, pressure generation unit and/or measuring device are passed on the central unit and analyzed there processing.This central unit preferably includes the control PC with corresponding software.In a kind of form of implementation of the present invention, the software of this control PC and operation is therein born the control of the control of described pressure generation unit, described injecting-unit and to the data query from the survey data of described measuring device, control unit and/or pressure generation unit.In another form of implementation of the present invention, the data of being gathered illustrate with being illustrated, and the variation in pressure process for example is shown.According to another form of implementation of the present invention, testing apparatus comprises a common operation piece.It is selective and to be provided with for all test forms or injecting-unit type all be unified, patterned user interface that different operating modes preferably is shown.
Testing apparatus preferably includes the measured piece grip unit of an injecting-unit that is used to keep to be detected.Adaptor or link preferably are set, so that described injecting-unit is connected on the testing apparatus hermetically according to its type.
Description of drawings
Embodiments of the invention are shown in the drawings, and in the following description it elaborated.
Among the figure:
Fig. 1 illustrates the overview block diagram according to first mode of execution of testing apparatus of the present invention;
Fig. 2 illustrates the overview block diagram according to second mode of execution of testing apparatus of the present invention;
Fig. 3 illustrates the overview block diagram according to the 3rd mode of execution of testing apparatus of the present invention; And
The technology that Fig. 4 illustrates according to testing apparatus of the present invention realizes.
Embodiment
Rail (CR) high-pressure service pump 10 altogether shown in Figure 1, this common-rail high-pressure pump are that surge volume 20 is supplied with the detection oil that is under the pressure.Be connected with on CR high-pressure service pump 10 and detect the oil vessel (not shown), CR high-pressure service pump 10 obtains fluid from this detection oil vessel, and this fluid is supplied to surge volume 20.Be connected with valve or throttle valve 30 on surge volume, its flow can be controlled by electricity (machinery or hydraulic pressure), and it is supplying with the detection oil that is under the pressure to measured piece grip unit 40 under running state of opening.10 controlled unit 50 controls of CR high-pressure service pump make this control unit control the pressure and/or the flow of CR high-pressure service pump 10.In addition, throttle valve 30 control flow rate of control unit 50 by can be automatically controlled.According to the present invention, the input end of measured piece is connected on the measured piece grip unit 40, and wherein, a measuring device is connected with the output terminal of measured piece.This measuring device preferably is connected with control unit 50, so that can realize feeding back and and then realize keeping an operation of determining at interval or operating point.Measured piece grip unit 40 is set up, with injecting-unit and dissimilar, the different big or small injecting-unit that receives same type, different sizes.Equip described measuring device in an identical manner, so that link with measured piece.Connecting of the connection of measured piece grip unit and measured piece and/or this measuring device and measured piece can be by carrying out with different structure size and the dissimilar adaptor that adapts.
Control unit 50 can be controlled high-pressure service pump 10 like this, makes described surge volume have certain pressure.Simultaneously, control unit 50 can be controlled throttle valve 30 like this, the operation of feasible simulation one sparger-injecting-unit.Equally, described control unit is control pump 10 and throttle valve 30 or one of them parts only like this, makes the operation of on grip unit 40 simulation in-line arrangement pump, thereby the nozzle holder combination can be used as measured piece.By surge volume unnecessary be that high-pressure service pump is set up high pressure in a short period of time, so that the pressure peak of steep side of simulation on grip unit 40.But valve or throttle valve 30 with short reaction time are enough to simulate corresponding variation in pressure process.Therefore, high-pressure service pump 10 can be according to less standard design.According to a kind of form of implementation, on surge volume 20, be connected with an excess pressure valve, this excess pressure valve is opened from certain pressure, and wherein threshold value preferably can electricly be regulated.In another embodiment, throttle valve 30 is designed to controlled valve.Can use the throttle valve of determining adjustable flow in addition, and the valve that preferably can change fast by means of electrical signal in conjunction with its open mode.
Fig. 2 illustrates the testing apparatus of the simplification that has high-pressure service pump 110, and this high-pressure service pump takes out fluid and it is flowed to measured piece grip unit 140 under certain pressure from detecting the oil vessel (not shown), and this measured piece grip unit is connected on the output terminal of high-pressure service pump 110.High-pressure service pump 110 is connected on the control gear of control high pressure pump characteristics.High-pressure service pump is designed for simulating different variation in pressure processes, for example the variation in pressure process of in-line arrangement pump and jet pump.For corresponding pump characteristics is shown, high-pressure service pump 110 must be controlled in time aspect its variation in pressure process and have the suitable reaction time.
Conversion ground, high-pressure service pump 110 is made up of the parts 10,20 and 30 of Fig. 1 shown in figure 2.At this, perhaps CR high-pressure service pump 10 or throttle valve 30 or its combination are by electric control, so that produce the variation in pressure process of wishing.
Fig. 3 illustrates a kind of mode of execution according to testing apparatus of the present invention, and wherein high-pressure service pump 210 supplies with the detection oil that is under the pressure for distributor 270.High-pressure service pump 210 preferably includes surge volume and controlled throttle valve (the two is all not shown), and wherein this throttle valve and/or this pump are connected control unit 250 controls thereon.Mode of execution shown in Figure 3 comprises a plurality of measured piece grip unit 240 that are connected on the controllable distributor 250.Measured piece grip unit 240 is designed in its size and seal aspect, to be used for different injecting-units to be detected.Therefore, a measured piece grip unit can be connected in certain structure size and/or certain injecting-unit type on the controllable distributor 270.
According to mode of execution shown in Figure 3, controllable distributor 270 is electrically connected with control unit 250.According to control unit 250, described distributor only makes a definite measured piece grip unit 240 be connected with high-pressure service pump 210.In another embodiment, each measured piece grip unit all comprises a pressure meter and/or a flowmeter.Perhaps, can be provided with middleware, this middleware measuring pressure and/or flow also make corresponding measured piece grip unit be connected with measured piece.In addition, can according to distributor with on the output terminal of measured piece, be connected a flow measuring device according to measured piece.
Control unit 250 preferably is connected with the database 260 that stores the data of describing the variation in pressure process.Preferably be same type but the different structure size and a plurality of injecting-units same type in database 260 or be different change curve and/or the indicatrix of type on the storage time.According to the selection of injecting-unit type, control unit 250 is loaded into corresponding indicatrix and/or corresponding variation in pressure process in this control gear, so that carry out and the corresponding pressure control of data.Control unit 250 preferably includes safety installations, this safety installations receives the survey data of measuring device or receives the service data of high-pressure service pump, controllable throttle valve and/or controllable distributor 270 and control described high-pressure service pump under the situation of critical value or critical value combination, to finish the generation of pressure.Database can be stored in the part of electronic memory, and this memory stores is used to control, analysis and user guided other data, measured value, controlling value and/or program.Electronic memory can be arranged for the working storage of central computation unit and/or long-term memory and be connected with this central computation unit.
The technology that Fig. 4 illustrates according to testing apparatus of the present invention realizes.This testing apparatus has electronic console 310 and user control panel 320.Detecting fuel tank 330 cools off by means of cooling ribs passively.Holding device 340 makes and can clamp injecting-unit to be detected.These injecting-units are connected on the corresponding supplying tube 350, so that be loaded the detection oil that is under the pressure.Holding device 340 also has a receiving vessel and pressure and plot ratio measuring device, and they are arranged on the output terminal of measured piece.
According to the present invention, described control unit is connected with an input device with a display device, wherein display device show value and/or different operating modes to be chosen, and described input unit allows to select certain display device or select certain operating mode.Database, control unit, display device and selection preferably are embodied as the PC with corresponding input-output apparatus.In this embodiment, only change software or only control software section and just allow different injecting-units are changed testing apparatus.
Core of the present invention is, produces oil pressure by means of pump-unit, can produce different variation in pressure processes with described pump-unit.Particularly common-rail high-pressure pump allows this operation flexibly.Described thus pump-unit can not only be used for co-rail ejector same type, to be detected, and also can be used for the nozzle holder combination by correspondingly changing control.Simultaneously, the measuring device that is designed for also measuring pressure, flow and the emitted dose and the capacity of reflux of common rail makes can realize corresponding measurement, the data about aspect of performance of---that is the nozzle holder that for example has one or two elastic support, cascade support, unit injection device nozzle makes up and have the sparger of the control gear of electricity---to add up other type injecting-unit.This control gear preferably has been designed for controlling sparger, makes to carry out the initiatively operation that conforms with type of injecting-unit on testing apparatus.
In addition, testing apparatus preferably includes the measuring device that is used for detecting automatically combination sealing and bouncing charateristic.Sealing and beam figure can be assessed by the operator, wherein the feasible suitable operating point that meets type that can control injecting-unit of testing apparatus.Preferably directly at the other element that is provided with a display device and is used to operate and be used for Operating Guideline of measured piece grip unit (40,140,240,340).
If high-pressure service pump comprises surge volume or high-pressure service pump and is equipped with surge volume, then the pressure that continues of high-pressure service pump set up make can keep in be in pressure under, can invoked fastly and instantaneously oil, and needn't change the pressure foundation of pump apace.Preferably set up surge volume and satisfy and the corresponding volume of common-rail jet so that when answering as the co-rail ejector of injecting-unit when detected, according to type depict the variation in pressure process of common-rail high-pressure pump.
Claims (10)
1. be used to detect the testing apparatus of injecting-unit, comprise:
One control unit (50,150,250);
One pressure generation unit (10,110,210) by this control unit (50,150,250) control;
One measured piece grip unit (40,140,240,340), this measured piece grip unit are set for the connection measured piece and are connected with described pressure generation unit (10,110,210),
It is characterized in that, the described pressure generation unit (10 of described control unit (50,150,250) control, 110,210), make described pressure generation unit (10,110,210) in described measured piece grip unit (40,140,240,340) be provided for attachable measured piece, different, optional pressure change procedure on.
2. testing apparatus according to claim 1 is characterized in that, described pressure generation unit (10,110,210) comprise the throttle valve (30) that a high-pressure service pump and is connected with this high-pressure service pump, the flow of this throttle valve can be by means of described control unit (50,150,250) control.
3. testing apparatus according to claim 2 is characterized in that, described high-pressure service pump is the common-rail high-pressure pump that comprises a surge volume (20).
4. each described testing apparatus in requiring according to aforesaid right, it is characterized in that, described different, optional pressure change procedure comprises the variation in pressure process of a common-rail high-pressure pump and the variation in pressure process of an in-line arrangement pump, between these variation in pressure processes by one with described control unit (50,150,250) selection device of Lian Jieing is selected.
5. each described testing apparatus in requiring according to aforesaid right, it is characterized in that, described testing apparatus comprise one with described control unit (50,150,250) measuring device that is connected, this measuring device and described measured piece grip unit (40,140,240,340) and described pressure generation unit (10,110,210) be that fluid is communicated with, this measuring device be set for measure on the described measured piece, be selected from least one physical quantity in the following set: quality, flow velocity, volume flowrate, mass flow rate, pressure, temperature, flow and stress.
6. testing apparatus according to claim 5, it is characterized in that, when described measured piece is nozzle holder combination, described physical quantity comprises pressure, volume flowrate and quality, described measuring device is provided to measure first and second and opens pressure, when described measured piece was a sparger, described measuring device also was provided to measure discharge capacity and the capacity of reflux under affiliated pressure.
7. each described testing apparatus in requiring according to aforesaid right, it is characterized in that, described control unit (50,150,250) comprise a storage (260), in this storage, store at least two control characteristics, separately corresponding over time of described at least two control characteristics and at least two corresponding different optional pressure change procedures, described control unit (50,150,250) produce the electrical signal that is used to control described pressure generation unit (10,110,210) based on these optional pressure change procedures.
8. be used to detect the method for injecting-unit, have following steps:
Produce one first variation in pressure process by a pressure generation unit (10,110,210);
Described pressure generation unit (10,110,210) is adjusted on the second variation in pressure process different with the described first variation in pressure process; And
By described pressure generation unit (10,110,210) produce one second variation in pressure process, wherein said pressure generation unit (10,110,210) adjusting comprises described pressure generation unit (10, the adjusting of control 110,210), and not to described pressure generation unit (10,110,210) carrying out entity changes.
9. method according to claim 8 is characterized in that, the described first and second variation in pressure processes are the different time-varying processes that produced by a common-rail high-pressure pump, and described method comprises step:
According to the described first variation in pressure process or according to the described common-rail high-pressure pump of the described second variation in pressure process control, wherein, the described first and second variation in pressure processes are variation in pressure processes of imitation one in-line arrangement pump characteristics.
10. according to Claim 8 or 9 described methods, this method also comprises step:
Measure a pressure, a flow, an emitted dose or a capacity of reflux, according to one with by means of an in-line arrangement pump the corresponding analysing and processing process of the detection of injecting-unit is carried out analysing and processing to described pressure, flow, emitted dose or capacity of reflux aspect one or more reference values following.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007008612A DE102007008612A1 (en) | 2007-02-22 | 2007-02-22 | Test device and method for checking injection components |
| DE102007008612.3 | 2007-02-22 | ||
| PCT/EP2008/050388 WO2008101751A1 (en) | 2007-02-22 | 2008-01-15 | Test device and method for checking injection components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101631952A true CN101631952A (en) | 2010-01-20 |
| CN101631952B CN101631952B (en) | 2013-03-27 |
Family
ID=39247649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880005754.9A Active CN101631952B (en) | 2007-02-22 | 2008-01-15 | Test device and method for checking injection components |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2126336B1 (en) |
| CN (1) | CN101631952B (en) |
| AT (1) | ATE523688T1 (en) |
| DE (1) | DE102007008612A1 (en) |
| WO (1) | WO2008101751A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996313A (en) * | 2012-12-25 | 2013-03-27 | 天台县唐宋汽车修配厂 | Mounting and demounting detection table of oil sprayer |
| CN110513180A (en) * | 2018-05-21 | 2019-11-29 | 罗伯特·博世有限公司 | Vehicle SCR systems and its return flow measurement module and measuring method |
| CN113049253A (en) * | 2019-12-10 | 2021-06-29 | 中国航发商用航空发动机有限责任公司 | Nozzle simulation device and fuel system experiment platform |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011006942A1 (en) | 2011-04-07 | 2012-10-11 | Zf Friedrichshafen Ag | Pressure generator for use in testing or calibrating equipment used for e.g. valve of brake circuit of vehicle, has heating device for heating pressure medium e.g. brake fluid, where pressure is generated based on change in quantity of heat |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19801640C1 (en) * | 1998-01-17 | 1999-04-22 | Wtz Motoren & Maschforsch Gmbh | Test rig for fuel injection valve |
| DE19851285C5 (en) * | 1998-11-06 | 2007-02-08 | Siemens Ag | Test device for a fuel injection valve |
| GB9930120D0 (en) * | 1999-12-21 | 2000-02-09 | Assembly Technology & Test Lim | Monitoring equipment for monitoring the performance of an engine fuel injector valve |
| CN1397730A (en) * | 2001-07-17 | 2003-02-19 | 江美桦 | Oil channel testing method and equipment for oil-supplying jet system |
-
2007
- 2007-02-22 DE DE102007008612A patent/DE102007008612A1/en not_active Withdrawn
-
2008
- 2008-01-15 WO PCT/EP2008/050388 patent/WO2008101751A1/en active Application Filing
- 2008-01-15 AT AT08701497T patent/ATE523688T1/en active
- 2008-01-15 EP EP08701497A patent/EP2126336B1/en active Active
- 2008-01-15 CN CN200880005754.9A patent/CN101631952B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996313A (en) * | 2012-12-25 | 2013-03-27 | 天台县唐宋汽车修配厂 | Mounting and demounting detection table of oil sprayer |
| CN102996313B (en) * | 2012-12-25 | 2015-06-17 | 天台县唐宋汽车修配厂 | Mounting and demounting detection table of oil sprayer |
| CN110513180A (en) * | 2018-05-21 | 2019-11-29 | 罗伯特·博世有限公司 | Vehicle SCR systems and its return flow measurement module and measuring method |
| CN110513180B (en) * | 2018-05-21 | 2022-03-15 | 罗伯特·博世有限公司 | Vehicle SCR system and backflow flow rate measuring module and method thereof |
| CN113049253A (en) * | 2019-12-10 | 2021-06-29 | 中国航发商用航空发动机有限责任公司 | Nozzle simulation device and fuel system experiment platform |
| CN113049253B (en) * | 2019-12-10 | 2023-08-04 | 中国航发商用航空发动机有限责任公司 | Nozzle simulation device and fuel system experiment platform |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008101751A1 (en) | 2008-08-28 |
| ATE523688T1 (en) | 2011-09-15 |
| EP2126336A1 (en) | 2009-12-02 |
| CN101631952B (en) | 2013-03-27 |
| DE102007008612A1 (en) | 2008-08-28 |
| EP2126336B1 (en) | 2011-09-07 |
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