DE2757996A1 - INJECTION NOZZLE INSPECTION PROCEDURE - Google Patents
INJECTION NOZZLE INSPECTION PROCEDUREInfo
- Publication number
- DE2757996A1 DE2757996A1 DE19772757996 DE2757996A DE2757996A1 DE 2757996 A1 DE2757996 A1 DE 2757996A1 DE 19772757996 DE19772757996 DE 19772757996 DE 2757996 A DE2757996 A DE 2757996A DE 2757996 A1 DE2757996 A1 DE 2757996A1
- Authority
- DE
- Germany
- Prior art keywords
- injection nozzle
- nozzle
- test
- evaluation device
- photodiode
- 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.)
- Withdrawn
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Fuel-Injection Apparatus (AREA)
- Measuring Fluid Pressure (AREA)
Description
R.R.
Die Erfindung geht aus von einem Verfahren nach der Gattung des Hauptanspruchs. Die Prüfung bezüglich des Schnarrverhaltens und der Dichtheit von Einspritzdüsen erfolgte bisher durch visuelle Beobachtung. Das ist umständlich, ungenau und führt zu Überforderung des Prüfers.The invention is based on a method according to the preamble of the main claim. The test regarding the snarling behavior and The tightness of injection nozzles was previously done by visual observation. This is cumbersome, imprecise and leads to excessive demands of the examiner.
Das erfindungsgemäße Verfahren mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Prüfgänge vollautomatisch und mit größter Genauigkeit durchgeführt werden können.The method according to the invention with the characterizing features The main claim has the advantage that the test runs are carried out fully automatically and with the greatest possible accuracy can be.
Zeichnungdrawing
Eine schematische Darstellung für-'das Durchführen des Verfahrens ist in beiliegender Zeichnung dargestellt.A schematic representation for carrying out the method is shown in the accompanying drawing.
Nahe der Mündung 10 einer Einspritzdüse 11 führt ein von einem Laser 12 kommender Lichtstrahl 13 vorbei und fällt auf eine Fotodiode I1I, von der über eine elektrische Leitung 15 in der Fotodiode erzeugte elektrische Signale einem elektronischen Auswertegerät 16 eingegeben werden. Mit dem beschriebenen Gerät können zweierlei Prüfverfahren durchgeführt werden, nämlich eine Dichtheitsprüfung und eine Prüfung des Schnarrverhaltens der Einspritzdüsen.A light beam 13 coming from a laser 12 passes near the mouth 10 of an injection nozzle 11 and falls on a photodiode I 1 I, from which electrical signals generated in the photodiode via an electrical line 15 are input to an electronic evaluation device 16. With the device described, two types of test methods can be carried out, namely a leak test and a test of the buzzing behavior of the injection nozzles.
Für die Prüfung des Schnarrverhaltens wird die Einspritzdüse mit einer definierten Fördermenge und mit einem definiertenTo test the chattering behavior, the injection nozzle is supplied with a defined flow rate and with a defined
909827/0197^
COPY909827/0197 ^
COPY
R.R.
Druck versorgt. Der aus der Düse austretende Kraftstoff tritt bei den als gut bezeichenten Düsen zerhackt aus und bei den schlechten nicht zerhackt, d. h. kontinuierlich. Bei den mit als gut bezeichneten Düsen empfängt die Fotodiode IM eine schwingende Lichtintensität und eine kontinuierliche Lichtintensität bei den schlechten Düsen. Im elektronischen Gerät 16 kann die Beurteilung der von der Fotodiode ankommenden Signale automatisch erfolgen. Ein Monitor 17 erlaubt eine visuelle Beobachtung des Fotodioden-Signals für Justier- und Kontrollzwecke.Pressure supplied. The fuel emerging from the nozzle emerges chopped from the nozzles designated as good and from the bad not chopped up, d. H. continually. In the case of the nozzles marked as good, the photodiode IM receives an oscillating one Light intensity and a continuous light intensity with the bad nozzles. In the electronic device 16 can Assessment of the incoming signals from the photodiode take place automatically. A monitor 17 allows visual observation of the photodiode signal for adjustment and control purposes.
Für die Dichtheitsprüfung wird die Düse innerhalb einer nach Erfordernissen einstellbaren Kontrollzeit, z. B. 10 Sekunden, mit einem Druck beaufschlagt, der um einen bestimmten Betrag, z.B. 10 bar, niedriger ist als der öffnungsdruck der Düse. In der Kontrollzeit darf sich kein Tropfen von der Düsenmündung lösen. Bei den guten Düsen, d.h. bei den dichten wird der Laserstrahl nicht abgedunkelt, bei den schlechten dagegen wird er so oft abgedunkelt, als sich Tropfen von der Düsenmündung lösen. Dies wird ebenfalls mit Hilfe des elektronischen Gerätes 16 automatisch ausgewertet sowie am Monitors 18 visuell beobachtet.For the leak test, the nozzle is set within a control time that can be set as required, e.g. B. 10 seconds, applied with a pressure that is a certain amount, e.g. 10 bar, lower than the opening pressure of the nozzle. During the check-up time, not a single drop should come off the nozzle orifice. With the good nozzles, i.e. with the dense ones the laser beam is not darkened, but with the bad, it is darkened as often as drops emerge from the nozzle orifice to solve. This is also evaluated automatically with the aid of the electronic device 16 and visually on the monitor 18 observed.
In beiden Fällen werden Amplituden und Frequenz- bzw. Impulsdauer des Fotodiodensignals elektronisch ausgewertet.In both cases, the amplitudes and frequency or pulse duration of the photodiode signal are evaluated electronically.
909827/p197909827 / p197
COPYCOPY
Claims (5)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772757996 DE2757996A1 (en) | 1977-12-24 | 1977-12-24 | INJECTION NOZZLE INSPECTION PROCEDURE |
GB21642/78A GB1601533A (en) | 1977-12-24 | 1978-05-23 | Method of testing injection nozzles |
IT31115/78A IT1101325B (en) | 1977-12-24 | 1978-12-21 | DEVICE TO CONTROL INJECTION NOZZLES |
SE7813184A SE7813184L (en) | 1977-12-24 | 1978-12-21 | PROCEDURE FOR TESTING THE INJECTION NOZZLE |
FR7836182A FR2412716A1 (en) | 1977-12-24 | 1978-12-22 | INJECTOR CONTROL PROCESS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772757996 DE2757996A1 (en) | 1977-12-24 | 1977-12-24 | INJECTION NOZZLE INSPECTION PROCEDURE |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2757996A1 true DE2757996A1 (en) | 1979-07-05 |
Family
ID=6027274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772757996 Withdrawn DE2757996A1 (en) | 1977-12-24 | 1977-12-24 | INJECTION NOZZLE INSPECTION PROCEDURE |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2757996A1 (en) |
FR (1) | FR2412716A1 (en) |
GB (1) | GB1601533A (en) |
IT (1) | IT1101325B (en) |
SE (1) | SE7813184L (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128072A1 (en) * | 1980-11-08 | 1982-06-24 | Robert Bosch Gmbh, 7000 Stuttgart | TEST STAND FOR TESTING INJECTION NOZZLES |
DE4026228C1 (en) * | 1990-08-18 | 1991-08-22 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2431715B (en) * | 2005-10-25 | 2009-08-26 | Managed Technologies Ltd | Apparatus and method for the detection of leaks |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3164012A (en) * | 1961-08-14 | 1965-01-05 | Socony Mobil Oil Co Inc | Method and apparatus for testing the spray pattern of a spray nozzle |
GB1072561A (en) * | 1964-03-10 | 1967-06-21 | Bryce Berger Ltd | Apparatus for testing liquid spray nozzles for internal combustion engines |
DE2701777C2 (en) * | 1977-01-18 | 1986-02-27 | Robert Bosch Gmbh, 7000 Stuttgart | Arrangement for recording the injection time and for determining the jet cross-section generated by injection nozzles on injection valves |
-
1977
- 1977-12-24 DE DE19772757996 patent/DE2757996A1/en not_active Withdrawn
-
1978
- 1978-05-23 GB GB21642/78A patent/GB1601533A/en not_active Expired
- 1978-12-21 SE SE7813184A patent/SE7813184L/en unknown
- 1978-12-21 IT IT31115/78A patent/IT1101325B/en active
- 1978-12-22 FR FR7836182A patent/FR2412716A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128072A1 (en) * | 1980-11-08 | 1982-06-24 | Robert Bosch Gmbh, 7000 Stuttgart | TEST STAND FOR TESTING INJECTION NOZZLES |
DE4026228C1 (en) * | 1990-08-18 | 1991-08-22 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Also Published As
Publication number | Publication date |
---|---|
IT7831115A0 (en) | 1978-12-21 |
IT1101325B (en) | 1985-09-28 |
FR2412716A1 (en) | 1979-07-20 |
SE7813184L (en) | 1979-06-25 |
FR2412716B1 (en) | 1983-03-18 |
GB1601533A (en) | 1981-10-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8141 | Disposal/no request for examination |