EP0766001B1 - Device to discharge a jet in a test stand of injection pumps - Google Patents
Device to discharge a jet in a test stand of injection pumps Download PDFInfo
- Publication number
- EP0766001B1 EP0766001B1 EP96110703A EP96110703A EP0766001B1 EP 0766001 B1 EP0766001 B1 EP 0766001B1 EP 96110703 A EP96110703 A EP 96110703A EP 96110703 A EP96110703 A EP 96110703A EP 0766001 B1 EP0766001 B1 EP 0766001B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jet
- run
- injection
- trough
- discharger
- 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.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims description 35
- 238000002347 injection Methods 0.000 title description 15
- 239000007924 injection Substances 0.000 title description 15
- 238000007599 discharging Methods 0.000 claims 1
- 238000009795 derivation Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000443 aerosol Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000717 retained 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
- 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
Definitions
- the invention relates to a device for Jet derivation in an injection pump test bench, according to genus specified in the preamble of claim 1.
- the inventive device for beam derivation in an injection pump test bench with the characteristic has the advantage that with it the oil vapor and aerosol formation in the operation of the Test bench is significantly reduced.
- the workplace and This can significantly improve environmental conditions.
- By removing the warm test oil between the Measurement pauses over a closed system will this steam and The formation of fog, as it wets open and large ones Areas can occur, significantly reduced.
- an additional collecting channel is saved, whereby the device builds more compact and inexpensive.
- the beam arrester according to claim 2 is designed as an open drain pan, which by a Lid is closed, in which the necessary Inlet openings are located.
- the device can be large Difficulties in existing single-pump test benches to be built in. More beneficial Refinements result from the remaining claims, the Description and the drawing.
- FIG. 1 shows a front view of the Device for beam derivation in an injection pump test bench
- Figure 2 is a plan view
- Figure 3 is a Cross section of this device according to III-III in Fig. 1, each in a simplified representation.
- FIG. 1 shows a simplified representation Front view of the device 10 for beam derivation, such as them in an injection pump test bench in no closer drawn form is installed.
- the device 10 has as A diverter 12 that is open on one side at the top, which is closed by a lid 13.
- the Drain pan 12 has a substantially cross-sectional shape of an isosceles trapezoid, the short side of which Bottom 14 of the drain pan 12 forms, and its long Baseline forms the open side 15 of the drain pan 12.
- This open side 15 is through the cross section closed dovetail-shaped cover 13, with its webs 16, 17 over the drain pan 12 is pushed and by the bias of the webs 16, 17 the drain pan 12 is attached.
- Drain pan 12 thus forms together with the two Drain connector 22 and the connected hoses 23 closed system 27, through which the collected Test oil is returned to the tank. Open sheets with large ones Wetting areas for that coming from the injection pump warm test oil is thus avoided.
- the warm test oil will that is, during the pauses in measurement via the closed system 27 directly into the test oil tank of the test bench. On this way the oil vapor and aerosol formation on one Minimum reduced, which reduces the workplace and Environmental conditions can be significantly improved. Also builds this device is more compact and less expensive since one there is no additional collecting channel.
- the device 10 can in due to its compact design previous injection pump test benches without difficulty installed and used as before.
- the drain pan 12 is on the swivel arms 19 in the housing of the test bench movably mounted and can be made during a measuring process be moved out of their pivoted position, so that the test oil flows 26 in a manner not shown in their associated measuring glasses.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Testing Of Engines (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Jet Pumps And Other Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
Die Erfindung geht aus von einer Vorrichtung zur Strahlableitung in einem Einspritzpumpen-Prüfstand, nach der im Oberbegriff des Anspruchs 1 näher angegebenen Gattung.The invention relates to a device for Jet derivation in an injection pump test bench, according to genus specified in the preamble of claim 1.
Es ist schon eine solche Vorrichtung zur Strahlableitung in einem Einspritzpumpen-Prüfstand aus der DE 31 11 870 A1 bekannt, bei der ein Strahlableiter als einfaches Leitblech ausgeführt ist, das mit Hilfe zweier Schwenkarme schwenkbar im Gehäuse des Prüfstands gelagert ist und zur Ableitung des Prüföls zwischen zwei Meßvorgängen zwischen die Einspritzstrahlauffänger und die zugeordneten Meßgläser eingeschwenkt werden kann. Von den mehreren, nebeneinander angeordneten Einspritzstrahlauffängern mit ihren jeweiligen Strahlrichtern fließen die geformten Prüfölströme auf das schräg geneigte Leitblech, von dem sie über eine Ablaufkante in eine gehäusefeste Sammelrinne strömen, von wo das Prüföl über zwei gehäusefeste, starre Rohrleitungen bzw. offen, direkt an der Gehäuserückwand in ein am Boden des Gehäuses ausgebildetes Sammelbecken strömt, um von dort aus über Schlauchleitungen u.s.w. in den am Prüfstandsboden befindlichen, geschlossenen Prüföltank zu gelangen. In manchen Fällen kann es nun ungünstig sein, daß hier das warme Prüföl über mehrere offene Bleche mit relativ großen Benetzungsflächen zum Tank geführt wird. Dabei kann eine Öldampf- und Aerosolbildung auftreten, wobei die entstandenen Dämpfe und Nebel ungehindert in die Raumluft gelangen können. Damit werden Arbeitsplatz- und Umweltbedingungen ungünstig beeinflußt. Zudem erhöht die zwischen Leitblech und Rohrleitung geschaltete Sammelrinne den Bauaufwand für den Einspritzpumpen-Prüfstand, was einer platzsparenden und kostengünstigen Bauweise entgegensteht.There is already such a device for beam derivation in an injection pump test bench from DE 31 11 870 A1 known in which a beam deflector as a simple baffle is executed that swivels with the help of two swivel arms is stored in the housing of the test bench and for deriving the Test oil between two measurements between the Injection jet catcher and the associated measuring glasses can be pivoted. Of the several, side by side arranged injection jet catchers with their respective Jet straighteners flow the shaped test oil flows onto the diagonally inclined baffle from which it runs over a drain edge flow into a housing-fixed collecting trough, from where the test oil via two rigid pipelines or open, directly on the rear wall of the housing in a on the bottom of the housing trained pool flows over to from there Hose lines etc. in the on the test bench floor closed test oil tank. In In some cases it may be unfavorable that here warm test oil over several open plates with relatively large ones Wetting surfaces is led to the tank. One can Oil vapor and aerosol formation occur, the Vapors and mist created unhindered in the room air can reach. This will be job and Environmental conditions adversely affected. In addition, the collecting trough connected between the guide plate and the pipeline the construction effort for the injection pump test bench, which one prevents space-saving and cost-effective construction.
Die erfindungsgemäße Vorrichtung zur Strahlableitung in einem Einspritzpumpen-Prüfstand mit den kennzeichenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß mit ihr die Öldampf- und Aerosolbildung im Betrieb des Prüfstandes erheblich reduziert wird. Die Arbeitsplatz- und Umweltbedingungen lassen sich damit wesentlich verbessern. Durch die Abführung des warmen Prüföls zwischen den Meßpausen über ein geschlossenes System wird diese Dampf- und Nebelbildung, wie sie bei offenen und großen benetzten Flächen auftreten kann, ganz erheblich vermindert. Darüberhinaus wird eine zusätzliche Sammelrinne eingespart, wodurch die Vorrichtung kompakter und kostengünstiger baut.The inventive device for beam derivation in an injection pump test bench with the characteristic In contrast, features of the main claim have the advantage that with it the oil vapor and aerosol formation in the operation of the Test bench is significantly reduced. The workplace and This can significantly improve environmental conditions. By removing the warm test oil between the Measurement pauses over a closed system will this steam and The formation of fog, as it wets open and large ones Areas can occur, significantly reduced. In addition, an additional collecting channel is saved, whereby the device builds more compact and inexpensive.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Vorrichtung möglich. Besonders vorteilhaft ist es, wenn der Strahlableiter gemäß Anspruch 2 als oben offene Ablaufwanne ausgeführt wird, die durch einen Deckel verschlossen ist, in dem sich die erforderlichen Einlauf-Öffnungen befinden. Die Vorrichtung kann ohne große Schwierigkeiten in bereits vorhandenen Einspitzpumpen-Prüfständen eingebaut werden. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den übrigen Ansprüchen, der Beschreibung und der Zeichnung.By the measures listed in the subclaims advantageous developments and improvements in Main claim specified device possible. Especially It is advantageous if the beam arrester according to claim 2 is designed as an open drain pan, which by a Lid is closed, in which the necessary Inlet openings are located. The device can be large Difficulties in existing single-pump test benches to be built in. More beneficial Refinements result from the remaining claims, the Description and the drawing.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine Vorderansicht der Vorrichtung zur Strahlableitung in einem Einspritzpumpen-Prüfstand, Figur 2 eine Draufsicht und Figur 3 einen Querschnitt dieser Vorrichtung nach III-III in Fig. 1, jeweils in vereinfachter Darstellung.An embodiment of the invention is in the drawing shown and in the following description explained. FIG. 1 shows a front view of the Device for beam derivation in an injection pump test bench, Figure 2 is a plan view and Figure 3 is a Cross section of this device according to III-III in Fig. 1, each in a simplified representation.
Die Figur 1 zeigt in vereinfachter Darstellung eine
Vorderansicht der Vorrichtung 10 zur Strahlableitung, wie
sie in einem Einspritzpumpen-Prüfstand in nicht näher
gezeichneter Form eingebaut ist. Die Vorrichtung 10 hat als
Strahlableiter eine oben einseitig offene Ablaufwanne 12,
die durch einen Deckel 13 verschlossen ist. Die
Ablaufwanne 12 hat im Querschnitt im wesentlichen die Form
eines gleichschenkligen Trapezes, dessen kurze Seite den
Boden 14 der Ablaufwanne 12 bildet, und dessen lange
Grundlinie die offene Seite 15 der Ablaufwanne 12 formt.
Diese offene Seite 15 ist durch den im Querschnitt
schwalbenschwanzförmig ausgebildeten Deckel 13 verschlossen,
der mit seinen Stegen 16, 17 über die Ablaufwanne 12
geschoben ist und durch die Vorspannung der Stege 16, 17 an
der Ablaufwanne 12 befestigt ist.Figure 1 shows a simplified representation
Front view of the
Wie die Figur 1 in Verbindung mit der Draufsicht nach
Figur 2 und dem Querschnitt nach Figur 3 näher zeigen, ist
die Ablaufwanne 12 an ihren Stirnseiten über
Flachkopfschrauben 18 an Schwenkarmen 19 gelagert, wobei
zusätzlich angebrachte Haltelaschen 21 die Führung zwischen
Ablaufwanne 12 und Schwenkarmen 19 übernehmen. Wie Figur 1
in Verbindung mit Figur 3 näher zeigt, sind am Boden 14 der
Ablaufwanne 12 jeweils nahe an den Stirnseiten zwei
Ablaufstutzen 22 ausgebildet, an denen jeweils ein flexibler
Schlauch 23 mit Hilfe von Schlauchschellen 24 befestigt ist.As in Figure 1 in connection with the top view
Figure 2 and the cross section of Figure 3 show in more detail
the
Wie aus Figur 2 näher hervorgeht, sind im Deckel 13 entlang
der Längswand der Ablaufwanne 12 Einlauf-Öffnungen 25
ausgebildet, deren Anzahl entsprechend der Anzahl der
Einspritzstrahlauffänger bzw. der Prüfdüsenhalter im
Einspritzpumpen-Prüfstand ausgelegt wird. Die Größe und die
Lage der Einlauf-Öffnungen 25 ist so gewählt, daß die
jeweils aus den Einspritzstrahlauffängern mit ihren
Strahlrichtern austretenden Prüfölströme, wie sie
vereinfacht durch die Pfeile 26 dargestellt sind, ungestört
durch den Deckel 13 hindurchtreten und in der Ablaufwanne 12
aufgefangen werden können. Das in der Ablaufwanne 12
aufgefangene Prüföl fließt über die Ablaufstutzen 22 und die
angeschlossenen, flexiblen Schläuche 23 zurück zum nicht
näher gezeichneten Tank im Gehäuse des Einspritzpumpen-Prüfstands.
Die durch den Deckel 13 verschlossene
Ablaufwanne 12 bildet somit zusammen mit den beiden
Ablaufstutzen 22 und den angeschlossenen Schläuchen 23 ein
geschlossenes System 27, über welches das aufgefangene
Prüföl zum Tank zurückgeführt wird. Offene Bleche mit großen
Benetzungsflächen für das von der Einspritzpumpe kommende
warme Prüföl werden somit vermieden. Das warme Prüföl wird
also während der Meßpausen über das geschlossene System 27
unmittelbar in den Prüföltank des Prüfstands geleitet. Auf
diese Weise wird die Öldampf- und Aerosolbildung auf ein
Minimum herabgesetzt, wodurch die Arbeitsplatz- und
Umweltbedingungen erheblich verbessert werden. Zudem baut
diese Vorrichtung kompakter und kostengünstiger, da eine
zusätzliche Sammelrinne entfällt. Zur Vermeidung von
Lufteinschlüssen in den Prüfölströmen 26 ist es günstig, daß
die über die Einlauf-Öffnungen 25 in die Ablaufwanne 12
eintretenden Prüfölströme auf eine schräg zur Flußrichtung
geneigte Längswand der Ablaufwanne 12 treffen.As can be seen in more detail from Figure 2, are in the
Die Vorrichtung 10 kann aufgrund ihrer kompakten Bauweise in
bisherigen Einspritzpumpen-Prüfständen ohne Schwierigkeiten
eingebaut und wie bisher verwendet werden. Die Ablaufwanne
12 ist über die Schwenkarme 19 im Gehäuse des Prüfstandes
beweglich gelagert und kann während eines Meßvorganges aus
ihrer eingeschwenkten Stellung herausbewegt werden, so daß
die Prüfölströme 26 in nicht näher gezeichneter Weise in
ihren zugehörigen Meßgläsern aufgefangen werden.The
Selbstverständlich sind an der gezeigten Ausführungsform
Änderungen möglich, ohne vom Gedanken der Erfindung
abzuweichen. So können die Vorteile des geschlossenen
Systems 27 beibehalten werden, wenn die Schläuche zur
Erhaltung der Beweglichkeit der Ablaufwanne 12 lediglich im
Anschlußbereich der Ablaufstutzen flexibel ausgebildet sind
und schließlich zum Tank hin als starre Rohrleitungen
ausgeführt werden. Ebenso läßt sich die Form der
Ablaufwanne 12 und des Deckels 13 variieren, solange
insgesamt das System 27 in sich geschlossen bleibt. Während
die Ablaufwanne 12 und der Deckel 13 als Aluminiumteile
ausgeführt sind, ist auch eine Bauweise aus Kunststoffteilen
möglich.Of course, are shown on the embodiment shown
Changes possible without departing from the spirit of the invention
to deviate. So you can take advantage of the closed
Claims (5)
- Device for discharging a jet in an injection-pump test stand, in which a movable jet discharger is pivotable between injection-jet collectors and associated measuring vessels in order to discharge the test oil issuing from the injection-jet collectors via at least one oil line to the tank, characterized in that the jet discharger (11) together with the oil line to the tank forms a closed system (27) for the test oil to be drawn off, and the jet discharger (11) has inlet openings (25) assigned to the injection-jet collectors and lying in its swung-in position under the injection-jet collectors, and in that the oil line is connected to the jet discharger (11) and is designed as a flexible hose (23) at least in the connecting region.
- Device according to Claim 1, characterized in that the jet discharger (11) is designed as a run-off trough (12) which is open on one side, has at least one run-off nozzle (22) at the bottom and is closed at its open side (15) by a lid (13), in which the inlet openings (25) are arranged.
- Device according to Claim 2, characterized in that the lid (13) has an essentially dovetailed cross section which is pushed with its webs (16, 17) onto the run-off trough (12) and fastened thereto, the run-off trough (12) having an essentially trapezoidal cross section.
- Device according to Claim 3, characterized in that the run-off trough (12) with the lid (13) is held and guided on two pivoted arms (19) with associated retaining straps (21).
- Device according to one of Claims 2 to 4, characterized in that the run-off trough (12) has a run-off nozzle (22) at each of its front ends, from which run-off nozzles (22) two flexible hoses (23) lead to the tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29515349U DE29515349U1 (en) | 1995-09-26 | 1995-09-26 | Device for jet derivation in an injection pump test bench |
| DE29515349U | 1995-09-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0766001A2 EP0766001A2 (en) | 1997-04-02 |
| EP0766001A3 EP0766001A3 (en) | 1998-02-04 |
| EP0766001B1 true EP0766001B1 (en) | 2001-03-21 |
Family
ID=8013443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96110703A Expired - Lifetime EP0766001B1 (en) | 1995-09-26 | 1996-07-03 | Device to discharge a jet in a test stand of injection pumps |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0766001B1 (en) |
| CZ (1) | CZ288298B6 (en) |
| DE (2) | DE29515349U1 (en) |
| ES (1) | ES2155907T3 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE810434C (en) * | 1948-10-02 | 1951-08-09 | Wilhelm Baecker | Injection pump testing device |
| FR1361780A (en) * | 1963-07-05 | 1964-05-22 | Friedmann & Maier Ag | Test bench for fuel injection pumps |
| DE2759189A1 (en) * | 1977-12-31 | 1979-07-05 | Bosch Gmbh Robert | MEASURING DEVICE FOR INJECTION PUMPS |
| DE3111870A1 (en) * | 1981-03-26 | 1982-10-14 | Robert Bosch Gmbh, 7000 Stuttgart | MEASURING DEVICE FOR INJECTION PUMPS |
-
1995
- 1995-09-26 DE DE29515349U patent/DE29515349U1/en not_active Expired - Lifetime
-
1996
- 1996-07-03 EP EP96110703A patent/EP0766001B1/en not_active Expired - Lifetime
- 1996-07-03 ES ES96110703T patent/ES2155907T3/en not_active Expired - Lifetime
- 1996-07-03 DE DE59606617T patent/DE59606617D1/en not_active Expired - Fee Related
- 1996-09-04 CZ CZ19962595A patent/CZ288298B6/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0766001A3 (en) | 1998-02-04 |
| DE29515349U1 (en) | 1997-02-06 |
| DE59606617D1 (en) | 2001-04-26 |
| EP0766001A2 (en) | 1997-04-02 |
| CZ288298B6 (en) | 2001-05-16 |
| ES2155907T3 (en) | 2001-06-01 |
| CZ259596A3 (en) | 1998-04-15 |
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