WO2014195326A1 - Device for testing a fuel injector or a fuel injection nozzle - Google Patents
Device for testing a fuel injector or a fuel injection nozzle Download PDFInfo
- Publication number
- WO2014195326A1 WO2014195326A1 PCT/EP2014/061508 EP2014061508W WO2014195326A1 WO 2014195326 A1 WO2014195326 A1 WO 2014195326A1 EP 2014061508 W EP2014061508 W EP 2014061508W WO 2014195326 A1 WO2014195326 A1 WO 2014195326A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tested
- fuel
- fuel injector
- injection nozzle
- test
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 104
- 238000012360 testing method Methods 0.000 title claims abstract description 85
- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
- G01N1/31—Apparatus therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
Definitions
- the invention relates to a device for testing a fuel injector or a fuel injection nozzle of an internal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a test strip for such a device.
- a device for testing of injectors of internal combustion engines which comprises an injection pressure generating pump, by means of which in a tank held ready fuel to be tested injector can be fed.
- the injector to be tested projects into a test chamber, with the injector to be tested injecting fuel into this test chamber during the test. From the outside, a fitter can visually observe the formation of the spray jet in the test chamber to check the functionality of the injector.
- the present invention has the object to provide a novel device for testing a fuel injector or a fuel injector and a test strip for such a device.
- This object is achieved by a device according to claim 1.
- the test chamber accommodates a test strip which receives test medium sprayed in the form of an evaluable spray pattern from the fuel injector to be tested or the fuel injection nozzle to be tested. Based on the spray pattern can be easily and reliably determined whether all nozzle holes of the fuel injector or the fuel injector are functional, and whether the injection angle of the nozzle holes is acceptable. Furthermore, the entire inspection process is less error prone and reproducible.
- the test strip is received by a holder such that the fuel injector to be tested or the fuel injection nozzle to be tested projects at least partially into the holder so that the holder surrounds the fuel injector to be tested or the fuel injection nozzle to be tested outside in sections.
- the test strip is picked up by the holder in the test chamber.
- the fuel injector to be tested or the fuel injection nozzle to be tested protrudes into the holder in a defined manner, so that the holder is the fuel injector to be tested or the fuels to be tested!
- the spray nozzle is partially surrounded on the outside and the fuel injector or the fuel injection nozzle is thus acted upon in a defined manner by the test strip.
- the holder is a cylindrical sleeve which receives the test strip radially inward, wherein preferably the holder is arranged coaxially to the fuel injector to be tested or the fuel injection nozzle to be tested.
- the holder is arranged coaxially to the fuel injector to be tested or the fuel injection nozzle to be tested.
- This allows a particularly preferred test of the fuel injector or fuel to be tested! njek- tor.
- the orientation of a test tube radially inwardly receiving cylindrical sleeve coaxial with the central axis of the fuel injector or fuel injector is preferred.
- the test strip is defined in claim 8.
- the test strip is made of an absorbent material and preferably has a reference pattern.
- the absorbency of the material of the test strip ensures that it reliably absorbs the spray pattern to be evaluated. Then, when the test strip carries a reference pattern, the evaluation of the spray pattern can be significantly simplified.
- FIG. 1 shows a schematic representation of a device according to the invention for testing a fuel injector or a fuel injection nozzle of an internal combustion engine
- Fig. 2 a detail of Fig. 1 in cross section.
- the present invention relates to a device for testing a fuel injector or a fuel injection nozzle of an internal combustion engine.
- a fuel injection nozzle of an internal combustion engine.
- FIG. 1 and 2 show schematically different views of a device according to the invention for testing fuel injectors in connection with a fuel injector 10 to be tested, wherein the fuel injector 10 to be tested according to FIG. 2 protrudes into a test chamber 1 1.
- the apparatus has a pump 12 which generates an injection pressure for the fuel injector 10 to be tested and which provides the fuel stored in a tank 13 to the fuel injector 10 to be tested at the defined injection pressure. When testing a fuel injector 10 to be tested, it injects the fuel into the test chamber 11.
- the test chamber 1 1 receives a test strip 14, which is received in the illustrated preferred embodiment of a holder 15 which is positioned within the test chamber 1 1.
- the holder 15 is a cylindrical sleeve which receives the test strip 14 radially inward on a radially inner, cylindrical wall.
- the same fuel is injected toward the test strip 14, which receives the fuel sprayed by the fuel injector 10 under test in the form of an evaluable spray pattern.
- the test strip 14 is preferably received by a cylindrical sleeve 15.
- the holder embodied as a cylindrical sleeve 15 is preferably aligned with the fuel injection nozzle 10 such that a central axis 16 of the holder or sleeve 15 extends coaxially to a central axis 17 of the fuel injection nozzle 10 to be tested.
- the fuel injection nozzle 10 preferably protrudes centrally, relative to the radial extent of the sleeve 15, into the sleeve 15 which carries the test strip 14 radially inwards.
- the test strip 14 carries a reference pattern 18.
- This reference pattern 18 is, for example, a pattern of intersecting lines, as shown in FIG. 2, wherein, when the test strip 14 is received on the radially inner wall of the cylindrical sleeve 15, first lines extending in the circumferential direction and second lines extending in the axial direction of the cylindrical sleeve 15.
- the alignment of the reference pattern 18 of the test strip 14 in the sleeve 15 can be effected in that the test strip 14 defines a stop 19 of the sleeve 15 comes to rest and is therefore aligned with respect to this stop 19.
- the test strip 14, which preferably carries the reference pattern 18, is a test strip 14 which is made of an absorbent material or material, in particular of a cellulose material, so that the test strip 14 engages that of the fuel injection nozzle 10 in FIG Test mode splashed fuel can easily and reliably absorb.
- test strip 14 for such a device according to the invention, wherein, as already stated, the test strip 14 is made of an absorbent material or material and preferably carries the reference pattern 18.
- a corresponding device in a test chamber 1 1 receives a test strip 14, wherein the test strip 14 is the fuel sprayed by the fuel injector 10 to be tested or by the fuel injector 10 to be tested in the form of a spray pattern.
- the spray pattern on the test strip 14 can then be subsequently evaluated, wherein on the basis of the spray pattern a comprehensive functional check of the fuel injector 10 or of the fuel injector 10 can take place.
- the patency of individual nozzle holes of the fuel injector or fuel injector may be inferred.
- deviations in the spray angle or irregularities in the spray angle of individual nozzle holes of the fuel injection nozzle or of the fuel injector can be detected on the basis of the spray pattern. This can be done, for example, by evaluating the relative position of the spray pattern relative to the reference pattern 18.
- irregularities in the injection amounts of individual nozzle holes of the fuel injection nozzle or the fuel injector can be detected from the spray pattern.
- the evaluation of the spray pattern can be done visually by a fitter or automatically via an image processing system.
- test medium can be sprayed in the test mode from the fuel injector to be tested or from the fuel injector to be tested.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fuel-Injection Apparatus (AREA)
- Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Quality & Reliability (AREA)
- Testing Of Engines (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020187003939A KR101923871B1 (en) | 2013-06-05 | 2014-06-03 | Device for testing a fuel injector or a fuel injection nozzle |
JP2016517278A JP6290383B2 (en) | 2013-06-05 | 2014-06-03 | Inspection device for fuel injector or fuel injection nozzle |
KR1020167000170A KR20160013246A (en) | 2013-06-05 | 2014-06-03 | Device for testing a fuel injector or a fuel injection nozzle |
CN201480032121.2A CN105264217A (en) | 2013-06-05 | 2014-06-03 | Device for testing a fuel injector or a fuel injection nozzle |
FI20155899A FI127652B (en) | 2013-06-05 | 2014-06-03 | Device for testing a fuel injector or a fuel injection nozzle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013009429.1 | 2013-06-05 | ||
DE201310009429 DE102013009429A1 (en) | 2013-06-05 | 2013-06-05 | Apparatus for testing a fuel injector or a fuel injector |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014195326A1 true WO2014195326A1 (en) | 2014-12-11 |
Family
ID=50877327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/061508 WO2014195326A1 (en) | 2013-06-05 | 2014-06-03 | Device for testing a fuel injector or a fuel injection nozzle |
Country Status (6)
Country | Link |
---|---|
JP (1) | JP6290383B2 (en) |
KR (2) | KR20160013246A (en) |
CN (1) | CN105264217A (en) |
DE (1) | DE102013009429A1 (en) |
FI (1) | FI127652B (en) |
WO (1) | WO2014195326A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015217940A1 (en) | 2015-09-18 | 2017-03-23 | Robert Bosch Gmbh | Test device for a gas injector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101940863B1 (en) * | 2016-11-16 | 2019-01-22 | 주식회사 포스코 | Nozzle inspecting apparatus and method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1116945B (en) | 1958-05-21 | 1961-11-09 | Goetaverken Ab | Device for testing injection nozzles of internal combustion engines |
US5716001A (en) * | 1995-08-09 | 1998-02-10 | Siemens Automotive Corporation | Flow indicating injector nozzle |
WO1998019148A1 (en) * | 1996-10-30 | 1998-05-07 | Southwest Research Institute | Apparatus and method for determining the distribution and flow rate characteristics of an injection nozzle |
DE19917583C1 (en) * | 1999-04-19 | 2000-07-06 | Siemens Ag | Fuel injection pattern/image detector for combustion engine fuel-injection nozzle |
US6234002B1 (en) * | 1997-09-05 | 2001-05-22 | David W. Sisney | Apparatus and methods for cleaning and testing fuel injectors |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2368593A (en) * | 1943-12-21 | 1945-01-30 | Shell Dev | Lubrication indicator |
GB1072561A (en) * | 1964-03-10 | 1967-06-21 | Bryce Berger Ltd | Apparatus for testing liquid spray nozzles for internal combustion engines |
DE3045401A1 (en) * | 1980-12-02 | 1982-07-01 | Robert Bosch Gmbh, 7000 Stuttgart | PROCESS FOR INJECTING INJECTORS |
JPS59196969A (en) * | 1983-04-25 | 1984-11-08 | Diesel Kiki Co Ltd | Inspection device for fuel injection valve |
JPH0247477Y2 (en) * | 1985-01-10 | 1990-12-13 | ||
US6510836B2 (en) * | 2000-07-03 | 2003-01-28 | Murad M. Ismailov | Swirl injector for internal combustion engine |
EP1432526B1 (en) * | 2002-01-22 | 2011-12-07 | Nordson Corporation | Method and apparatus for detecting a liquid spray pattern |
JP2005140014A (en) * | 2003-11-06 | 2005-06-02 | Toyota Motor Corp | Injector nozzle inspecting method and its device |
US7535567B2 (en) * | 2006-08-15 | 2009-05-19 | Caterpillar Inc. | Nozzle sorting apparatus and method |
-
2013
- 2013-06-05 DE DE201310009429 patent/DE102013009429A1/en not_active Withdrawn
-
2014
- 2014-06-03 KR KR1020167000170A patent/KR20160013246A/en active Application Filing
- 2014-06-03 WO PCT/EP2014/061508 patent/WO2014195326A1/en active Application Filing
- 2014-06-03 KR KR1020187003939A patent/KR101923871B1/en active IP Right Grant
- 2014-06-03 FI FI20155899A patent/FI127652B/en not_active IP Right Cessation
- 2014-06-03 JP JP2016517278A patent/JP6290383B2/en not_active Expired - Fee Related
- 2014-06-03 CN CN201480032121.2A patent/CN105264217A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1116945B (en) | 1958-05-21 | 1961-11-09 | Goetaverken Ab | Device for testing injection nozzles of internal combustion engines |
US5716001A (en) * | 1995-08-09 | 1998-02-10 | Siemens Automotive Corporation | Flow indicating injector nozzle |
WO1998019148A1 (en) * | 1996-10-30 | 1998-05-07 | Southwest Research Institute | Apparatus and method for determining the distribution and flow rate characteristics of an injection nozzle |
US6234002B1 (en) * | 1997-09-05 | 2001-05-22 | David W. Sisney | Apparatus and methods for cleaning and testing fuel injectors |
DE19917583C1 (en) * | 1999-04-19 | 2000-07-06 | Siemens Ag | Fuel injection pattern/image detector for combustion engine fuel-injection nozzle |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015217940A1 (en) | 2015-09-18 | 2017-03-23 | Robert Bosch Gmbh | Test device for a gas injector |
AT517732A3 (en) * | 2015-09-18 | 2018-01-15 | Bosch Gmbh Robert | Test device for a gas injector |
AT517732B1 (en) * | 2015-09-18 | 2018-06-15 | Bosch Gmbh Robert | Test device for a gas injector |
Also Published As
Publication number | Publication date |
---|---|
CN105264217A (en) | 2016-01-20 |
FI127652B (en) | 2018-11-30 |
DE102013009429A1 (en) | 2014-12-24 |
KR101923871B1 (en) | 2018-11-29 |
JP6290383B2 (en) | 2018-03-07 |
JP2016520760A (en) | 2016-07-14 |
KR20180017239A (en) | 2018-02-20 |
KR20160013246A (en) | 2016-02-03 |
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