EP2593662A1 - Prüfstand und verfahren zum prüfen von fluidpumpen und fluidinjektoren - Google Patents
Prüfstand und verfahren zum prüfen von fluidpumpen und fluidinjektorenInfo
- Publication number
- EP2593662A1 EP2593662A1 EP11723084.7A EP11723084A EP2593662A1 EP 2593662 A1 EP2593662 A1 EP 2593662A1 EP 11723084 A EP11723084 A EP 11723084A EP 2593662 A1 EP2593662 A1 EP 2593662A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- tank
- test
- test fluid
- heat exchanger
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 177
- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims description 14
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 230000003750 conditioning effect Effects 0.000 claims abstract description 9
- 239000002826 coolant Substances 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000001143 conditioned effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 5
- 238000005496 tempering Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
-
- 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
-
- 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
-
- 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
Definitions
- the invention relates to a test rig and a method for testing a fluid pump and / or a fluid injector, with a device for conditioning the test oil used for the test.
- test oil For testing fluid pumps, particularly high-pressure fuel pumps, and fluid injectors (fuel injectors) in a test bench, it is desirable that the fluid used for testing (test oil) has a defined temperature. Depending on the prevailing environmental and operating conditions, it is necessary to heat or cool the fluid used.
- An inventive test stand has a tank for receiving and storing the fluid and a first fluid removal line, which is adapted to remove fluid from the tank and a pump to be tested injection pump, which may be in particular a high-pressure fuel pumps.
- a test stand according to the invention comprises a first cooling circuit for cooling the fluid stored in the tank, the first cooling circuit having a first fluid extraction conduit formed to remove fluid from the tank and hydraulically connected to a heat exchanger to operate out of the reservoir
- the heat exchanger is adapted to cool the fluid withdrawn from the tank.
- the first cooling circuit additionally has a return line connected to the heat exchanger, which is designed to return fluid, which has flowed from the tank into the heat exchanger through the second fluid removal line, into the tank.
- a method for testing a fluid injection pump and / or a fluid injector comprises the steps of: conditioning, in particular tempering a fluid stored in a tank and removing the conditioned fluid from the tank to supply it to a fluid injection pump which supplies the fluid under increased pressure to the fluid testing fluid injector supplies.
- the conditioning of the fluid comprises the steps of: removing the fluid from the tank; Cooling the fluid in a heat exchanger; and returning the cooled fluid to the tank.
- a test stand according to the invention and a method according to the invention make it possible to condition the fluid better by tempering the fluid in the tank compared with the known prior art. Since the amount of fluid in the tank has a greater heat capacity than the amount of fluid which is passed in a conventional method through the heat exchanger, which is located immediately in front of the fluid injection pump, temperature fluctuations of the fluid can be reduced in the inlet to the fluid injection pump. On the one hand, higher requirements for temperature stability can be met in the testing of fluid injection pumps and fluid injectors, in particular high-pressure fuel pumps and fuel injectors, as used in particular in diesel engines. On the other hand, the heat exchanger can be dimensioned smaller than before with constant demands on the temperature stability, so that the manufacturing cost and space requirements can be reduced.
- the thermal energy E m * c * T of the test fluid stored in the tank is significantly greater than the thermal energy of the volume flow through the heat exchanger. exchanger of a conventional device.
- a tank typically used in a test bench contains fluid having a mass of about 40 kilograms. During testing, this mass corresponds to a delivery time of approx. 10 minutes for a test with a high pump delivery rate and a delivery time of approx. 20 minutes for a test with a smaller pump delivery rate.
- a second cooling circuit is provided, which is connected to the heat exchanger and which is designed to cool the fluid flowing through the heat exchanger.
- a second cooling circuit By a second cooling circuit, the fluid can be cooled effectively and inexpensively.
- a control valve is provided in the second cooling circuit, which is suitable to regulate the flow of coolant in the second cooling circuit.
- the cooling capacity of the second cooling circuit can be adjusted.
- the temperature of the fluid in the tank can be adjusted to a desired value.
- a coolant pump is arranged in the second cooling circuit, which is designed to support the circulation of coolant through the cooling circuit.
- the efficiency of the refrigeration cycle can be improved by such a pump which assists the circulation of refrigerant through the second refrigeration cycle.
- the coolant circulating in the second refrigeration cycle is water. Water is an effective and inexpensive coolant.
- a heater is arranged in the tank, which is suitable for heating the fluid stored in the tank.
- the desired temperature of the fluid in the tank can in particular be set to the desired value even if the desired value is above the current fluid temperature or the ambient temperature.
- a temperature sensor is arranged in the first fluid extraction conduit and / or in the tank, which is designed to measure the temperature of the fluid. By measuring the temperature of the fluid, a desired fluid temperature can be set particularly efficiently and accurately.
- Measuring the fluid temperature in the first fluid extraction conduit provides a particularly accurate value of the temperature of the fluid supplied to the fluid inlet pump.
- a measurement of the temperature of the fluid in the tank makes it possible to control the cooling circuit and / or the heating particularly efficiently and precisely in order to set the desired temperature of the fluid in the tank.
- An embodiment of a method according to the invention also comprises regulating the cooling and / or heating of the fluid in the tank on the basis of the measured temperature.
- the figure shows a schematic representation of a device according to the invention for conditioning and in particular tempering a fluid, which is used for testing a Fluideinspntzpumpe and / or a Fluidinjektors.
- a device 2 comprises a tank 4, which is designed for receiving and storing the fluid to be conditioned.
- a first fluid removal line 6 is provided to remove fluid from the tank 4 and supply it to a fluid inlet pump 8.
- the fluid intake pump 8 increases the pressure of the fluid withdrawn from the tank 4 and supplies the fluid to a pressure accumulator (test rail) 40.
- the pressure in the pressure accumulator 40 can be measured by at least one pressure sensor 42 arranged in the pressure accumulator 40 and can be set with high accuracy to the desired value by driving a Druckeinstellventils 44 through which excess fluid from the pressure accumulator 40 in the tank container 4 traceable.
- the pressure accumulator 40 is hydraulically connected to a fluid injector 10 to be tested via a fluid pressure line 9 in order to supply pressurized fluid to the fluid injector 10 during operation.
- the fluid emitted by the fluid injector 10 in the test mode is collected by a collecting device 11 and returned to the tank 4 by a fluid measuring unit 50.
- the fluid measuring unit 50 has an evaluation and display unit 52, which is designed to evaluate and display the quantities of fluid measured by the fluid measuring unit 50 or to pass them on to a diagnostic device (not shown in the figure).
- the pressure accumulator 40 is additionally hydraulically connected to the fluid measuring unit 50 via a bypass line 48, which can be closed by a bypass valve 46.
- a bypass valve 46 For checking the fluid injector 10, the bypass valve 46 is closed.
- the bypass valve 46 is opened and the fluid injector 10 is not driven, so that the fluid metering unit 50 measures the amount of fluid delivered by the fluid injection pump 8.
- a first fluid delivery pump 32 is provided within the tank 4, which is designed to assist in the removal of fluid from the tank 4 and to supply the withdrawn fluid to the fluid injection pump 8.
- the first Fluidför- derpumpe 32 is arranged outside of the tank 4 in the first fluid removal line 6.
- a first temperature sensor 28 is provided in the first fluid removal line 6, which is suitable for measuring the temperature of the fluid withdrawn from the tank 4 through the first fluid removal line 6 and forwarding the measurement result to a control device not shown in the FIGURE.
- a heater 26 is arranged, which can be controlled by the control device, not shown, to increase the temperature of the fluid in the tank 4, if necessary.
- a first cooling circuit 12 is provided with a second fluid removal conduit 14, which is designed to remove fluid from the tank 4 and to supply it to a heat exchanger 16.
- a return line 18 is also connected to the Heat exchanger 16 is connected to fluid, which has been removed from the tank 4 and flowed through the heat exchanger 18 through the second Fluidentnah- 14, passed from the heat exchanger 18 back into the tank 4.
- a second fluid delivery pump 34 is provided inside the tank 4, which is designed to effect a fluid flow from the tank 4 through the second fluid removal line 14, the heat exchanger 16 and the return line 18 during operation.
- the second fluid delivery pump 34 is disposed outside of the tank 4 in the second fluid removal conduit 14.
- the second fluid delivery pump 34 is also driven by the control device, not shown, to regulate the temperature of the fluid in the tank 4, in particular, to reduce the temperature of the fluid in the tank 4.
- a second cooling circuit 20 Connected to the heat exchanger 16 is a second cooling circuit 20, which is adapted to transfer and remove heat within the heat exchanger 16 from the fluid flowing through the heat exchanger 16 to coolant circulating through the second cooling circuit 20 and to discharge the fluid to cool.
- a coolant pump 24 is provided to assist the circulation of the coolant through the second cooling circuit 20.
- a controllable coolant valve 22 is provided which can be controlled by the control device, not shown, to control the flow of coolant through the second cooling circuit 20. By the coolant valve 22 so the cooling capacity of the heat exchanger 16 can be adjusted to the desired value.
- the second cooling circuit 20 has a second heat exchanger 36, which is designed, for example, as a chiller, in order to cool the coolant, which has been heated by the fluid in the heat exchanger 16.
- a closed cooling circuit 20 the fluid can be effectively, inexpensively and environmentally friendly cooled.
- a second temperature sensor 30 is provided, which is formed to measure the temperature of the fluid in the tank 4. Also, this second temperature sensor 30 is preferably connected to the control device, not shown.
- the control device preferably has an input device, via which the desired temperature for the respective test process is adjustable. Depending on the temperature values measured by the temperature sensors 28, 30 and transmitted to the control device, the control device controls the second fluid delivery pump 34, the coolant pump 24, the coolant valve 22 and the heater 26 so that the fluid in the tank 4 reaches the desired temperature as quickly as possible , The circulation of the fluid through the first cooling circuit 12, which is caused by the second fluid delivery pump 34, results in a mixing of the fluid in the tank 4, whereby a uniform temperature of the fluid in the tank 4 is achieved.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010031481A DE102010031481A1 (de) | 2010-07-16 | 2010-07-16 | Prüfstand und Verfahren zum Prüfen von Fluidpumpen und Fluidinjektoren |
PCT/EP2011/059277 WO2012007229A1 (de) | 2010-07-16 | 2011-06-06 | Prüfstand und verfahren zum prüfen von fluidpumpen und fluidinjektoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2593662A1 true EP2593662A1 (de) | 2013-05-22 |
EP2593662B1 EP2593662B1 (de) | 2016-08-10 |
Family
ID=44269274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11723084.7A Active EP2593662B1 (de) | 2010-07-16 | 2011-06-06 | Prüfstand zum prüfen von fluidpumpen und fluidinjektoren |
Country Status (6)
Country | Link |
---|---|
US (1) | US9528768B2 (de) |
EP (1) | EP2593662B1 (de) |
CN (1) | CN102971523B (de) |
BR (1) | BR112013000622B1 (de) |
DE (1) | DE102010031481A1 (de) |
WO (1) | WO2012007229A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010031486A1 (de) * | 2010-07-16 | 2012-01-19 | Robert Bosch Gmbh | Prüfstand für Fluidpumpen und Fluidinjektoren |
CN105275700A (zh) * | 2015-11-13 | 2016-01-27 | 广西玉柴机器股份有限公司 | 电控喷油器的检测装置 |
US10139450B2 (en) * | 2017-04-10 | 2018-11-27 | Jason A. Bell | Plug-in fuel pump power bypass / test system |
US10578466B2 (en) | 2017-11-17 | 2020-03-03 | Groupe Meloche Inc. | Fluid injector testing system |
DE102018107902B3 (de) | 2018-04-04 | 2019-04-25 | PID Prüfungen & industrielle Dienstleistungen GmbH & Co. KG | Prüfstandanordnung zur Durchführung von Tests mit flüssigen Prüfmedien |
WO2019241866A1 (en) * | 2018-06-21 | 2019-12-26 | Robert Bosch Limitada | Method of testing a unit pump system performance |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB714499A (en) | 1951-05-16 | 1954-09-01 | Cheecol Processes Ltd | Improvements in or relating to a process for the manufacture of shaped concrete articles |
GB1135234A (en) * | 1965-04-13 | 1968-12-04 | Hartridge Ltd Leslie | Improvements in or relating to apparatus for testing engine fuel injectors |
DE2820542A1 (de) * | 1978-05-11 | 1979-11-22 | Bosch Gmbh Robert | Pruefeinrichtung fuer einspritzpumpen |
JPS55117069A (en) | 1979-03-05 | 1980-09-09 | Diesel Kiki Co Ltd | Fuel temperature controlling device for distributor type injection pump |
US4404847A (en) * | 1981-08-07 | 1983-09-20 | Caterpillar Tractor Co. | Fuel supply conditioning and flow measurement circuit |
US4712421A (en) * | 1986-09-08 | 1987-12-15 | Young Jeffrey H | Fuel injector testing device |
IT1217257B (it) | 1987-08-25 | 1990-03-22 | Weber Srl | Impianto di iniezione del combustibile con iniettori comandati per motori a ciclo diesel |
US5000043A (en) * | 1989-05-01 | 1991-03-19 | Caterpillar Inc. | Apparatus and method for testing fuel injectors |
DE19740057C1 (de) * | 1997-09-12 | 1999-01-21 | Mannesmann Vdo Ag | Kraftstoffversorgungssystem |
JP4080115B2 (ja) * | 1999-10-26 | 2008-04-23 | ヤマハマリン株式会社 | エンジンの故障診断システム |
DE10232514A1 (de) * | 2002-07-18 | 2004-01-29 | Daimlerchrysler Ag | Kraftstoffkühlung im Rücklauf eines druckübersetzten Einspritzsystems |
DE102006013634A1 (de) | 2006-03-22 | 2007-09-27 | PID Prüfungen & industrielle Dienstleistungen GmbH & Co. KG | Prüfstandanordnung zur Durchführung von Tests an flüssigkeitsdurchströmten Prüfmodulen |
GB2451262B (en) * | 2007-07-25 | 2012-05-16 | Brian Courtney | Process for testing an engine fuel system component |
-
2010
- 2010-07-16 DE DE102010031481A patent/DE102010031481A1/de not_active Withdrawn
-
2011
- 2011-06-06 US US13/810,535 patent/US9528768B2/en active Active
- 2011-06-06 BR BR112013000622-6A patent/BR112013000622B1/pt active IP Right Grant
- 2011-06-06 WO PCT/EP2011/059277 patent/WO2012007229A1/de active Application Filing
- 2011-06-06 CN CN201180034906.XA patent/CN102971523B/zh active Active
- 2011-06-06 EP EP11723084.7A patent/EP2593662B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
US9528768B2 (en) | 2016-12-27 |
US20130186605A1 (en) | 2013-07-25 |
CN102971523B (zh) | 2015-11-25 |
CN102971523A (zh) | 2013-03-13 |
EP2593662B1 (de) | 2016-08-10 |
WO2012007229A1 (de) | 2012-01-19 |
DE102010031481A1 (de) | 2012-01-19 |
BR112013000622B1 (pt) | 2021-03-16 |
BR112013000622A2 (pt) | 2016-05-24 |
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