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DE899727C - Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines - Google Patents

Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines

Info

Publication number
DE899727C
DE899727C DEB16005A DEB0016005A DE899727C DE 899727 C DE899727 C DE 899727C DE B16005 A DEB16005 A DE B16005A DE B0016005 A DEB0016005 A DE B0016005A DE 899727 C DE899727 C DE 899727C
Authority
DE
Germany
Prior art keywords
fuel
piston
amount
internal combustion
adjustment devices
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
Application number
DEB16005A
Other languages
German (de)
Inventor
Eugen Lutz
Eugen Weiler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DEB16005A priority Critical patent/DE899727C/en
Application granted granted Critical
Publication of DE899727C publication Critical patent/DE899727C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005With rotary or crank input

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Testing Of Engines (AREA)

Description

Dille Erfindung betrifft ein-Verfahren zum prüfen. von pneuanatischen Verstelleinrichtungen für eine Betriebsgröße, z. B. die Knaftstoffmeng'e, dien Zündzeitpunkt oder den Spritzbeginn vom: Brennkraftmaschinen. Der Erfindung liegt" die' Aufgabe zugrunde, ein einfaches Verfahren zu entwickeln, da die bisher gebräuchlichen Verfahren, bei denen die zu prüfende Vcrstellenrichtung an eine motorisch betriebene, Unterdruck oder Druck erzeugende Anlage angeschlossen wurde, einen erheblichen Aufwand an Raum und Kosten verursachen.The invention relates to a method for testing. of pneumatics Adjusting devices for a company size, e.g. B. the amount of pulp, serve the ignition point or the start of injection from: internal combustion engines. The invention is "the 'task based on developing a simple process, since the previously common processes in which the adjustment direction to be tested is connected to a motor-driven, negative pressure or pressure generating system was connected, a considerable amount of space and cause costs.

Gemäß der Erfindung wird diese Aufgabe gelöst durch die Anwendung einer von Hand betätigten Kolbenluftpumpe, deren Hubraum so, groß ist, daß während eines einzigen Saug- oder Druckhubes des Kolbens jeder zu prüfende Betriebszustand der Verstelleinrichtung erzeugt werden kann.According to the invention, this object is achieved by the application a hand-operated piston air pump whose displacement is so large that during a single suction or pressure stroke of the piston each operating condition to be tested the adjustment device can be generated.

In der Zeichnung ist ein Beispüel mit einer Luftpumpe zur Durchführung des Verfahrens schematisch dargestellt.In the drawing is an example with an air pump for implementation of the process shown schematically.

An einer Kraftftoffeinspritzpumpe i für eine Brennkrnrftlnaschine ist eine Ventelleinrichtung 2 bekannter Art eingebaut, deren Verstellglied, eine durch eine Feder 3 belastete Memb,mn 4, mit dein Färdermengenverstellgked:5 der Einspritzpumpe gekuppelt ist. Die Membran 4 trennt dem; Innenraum der Verstelleinrichtung in zwei Teile, einen mit der Außenluft durch einte Öffnung 6 in Verbindung stehenden Rauar 7 und einen: Raum 8, der über eine Leitung 9 mit dem Zylinder io einer von Hand betätigten Ko,tbenlufftpumpe in Verbindung steht. An die Leitung 9 ist ein Druckmesser i i angeschlossen.On a fuel injection pump for an internal combustion engine a valve device 2 of known type is installed, the adjusting member, a by a spring 3 loaded membrane, mn 4, with your Färderhabenverstellgked: 5 der Injection pump is coupled. The membrane 4 separates the; Interior of the adjustment device in two parts, one communicating with the outside air through a single opening 6 Rauar 7 and a: space 8, which is connected to the cylinder io by a line 9 Hand operated fuel pump is in communication. To the line 9 is a Pressure gauge i connected i.

Im. Zylinder io der Luftpumpe befindet sich @eiin Kolben 12, an dem eine 13 befelstigt ist; diese greift in. ein6 mit dem Muttergewinde versehene Büchse 14 ein,- die in einer am Zylinder io befestigten Nabe 15 drehbar, aber axial nicht verschiebbar gelagert ist. Auf dem äuß-eiren Ende der Büchse 14 ist ein Handrad 16 mit Kurbelgriff 17 befestigt.In the. Cylinder io of the air pump there is @eiin piston 12 on which a 13 is paved; this engages in a socket provided with the nut thread 14 a, - rotatable in a hub 15 attached to the cylinder io, but not axially is slidably mounted. On the outer end of the sleeve 14 is a hand wheel 16 attached with crank handle 17.

Die Verstelleinrichtung 2 ist im normalen Betrieb der Brennkraftmaschine mit der Saugleitung der, Maschine verbunden, so daß also, im Raum B der Vers.telleinrichtung normalerweise Unterdruck herrscht. Bei der Prüfung der Verstelleinrichtung ist deshalb zu bestimmen, welche Stellung die Membran 4 und damit das Fördermengenverstellglied der Einspritzpumpe in Abhängigkeit vom Unterdruck einnimmt und welche Fördermenge :die: Einspritzpumpe dahei liefert. Zu diesem Zweck wird die Einspritzpumpe in der Regel auf einem Prüfstand mit einer bestimmten Drehzahl angetrieben. Die Stellung der Membran bzw. des Fördermengenversteilllgliedes 5 kann an einer hier nicht dä@rgeistellten Anzeigeeinrichtung abgelesen wenrden. Der Unterdruck wird! durch die! Luftpumpe erzeugt, indem der Kodben 1a durch Drehen des Handd-raades@ 16 nach rechts bewegt wird. Die Höhe des Unterdruckes ist am Dnudnnes,sex ii ablesbar.The adjusting device 2 is in normal operation of the internal combustion engine connected to the suction line of the machine, so that in space B of the vers.telleinrichtung normally there is negative pressure. Therefore, when checking the adjustment device to determine which position the membrane 4 and thus the delivery rate adjustment member the injection pump assumes depending on the negative pressure and the delivery rate : the: injection pump dahei delivers. For this purpose, the injection pump in the Usually driven on a test bench at a certain speed. The position the membrane or the delivery volume adjustment member 5 can be attached to a not shown here Read the display device. The negative pressure is! through the! Air pump generated by the Kodben 1a by turning the handd-raades @ 16 moves to the right will. The level of the negative pressure can be read from the thin, sex ii.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren, zum Prüfen von pneumatischen Verstelleinrichtungen, für eine Betrie@bsgräße, z. B. die Kraftstoffmenge, den Zündzeitpunkt adeir den Spritzbeginn von'Brennkraftmas.chinen, gekennzeichnet durch die Anwendung einer von Hand bestätigten Kol#benduftp.umpe, deren Hub, rawm so groß isst, daß während eines einzigem. Saug- oder Druckhubes des, Kolbens jeder zu prüfende. Betriebszustand der Verstelleinrichtung erzeugt werden kann. . Luftpumpe zur Durchführung des Verfahrens nach Anspruch i, daidur'ch gekennzeichnet, daß zum Bewegen des Kolbens. eine gleichachsng zu diesem angeordnete und an ihm angreifende Gewindespindel oder -stange, die in ein axial nicht verschiebbares Muttergewinde eingreift, und: eine Handkurbel dient. 3. Luftpumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Gewindestange am Kolben befestigt ist und das Muttergewinde in einer die Han:dlcurbel tragenden, und im Pumpengehäuse drehlbaren Büchse.-untergebracht ist. PATENT CLAIMS: i. Method for testing pneumatic adjustment devices for a company @ bsgrässer, z. B. the amount of fuel, the ignition timing and the start of injection von'Brennkraftmas.chinen, characterized by the use of a manually confirmed Kol # benduftp.umpe, whose stroke, rawm eats so large that during a single. Suction or pressure stroke of the piston each to be tested. Operating state of the adjustment device can be generated. . Air pump for carrying out the method according to claim i, characterized in that for moving the piston. a threaded spindle or rod, which is arranged in the same axis as this and engages on it and which engages in an axially non-displaceable nut thread, and: a hand crank is used. 3. Air pump according to claim 2, characterized in that the threaded rod is attached to the piston and the nut thread is housed in a bushing which carries the Han: dlcurbel and which can be rotated in the pump housing.
DEB16005A 1951-07-25 1951-07-25 Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines Expired DE899727C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB16005A DE899727C (en) 1951-07-25 1951-07-25 Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB16005A DE899727C (en) 1951-07-25 1951-07-25 Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines

Publications (1)

Publication Number Publication Date
DE899727C true DE899727C (en) 1953-12-14

Family

ID=6958729

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB16005A Expired DE899727C (en) 1951-07-25 1951-07-25 Method for testing pneumatic adjustment devices, for example for the amount of fuel or the ignition point of internal combustion engines

Country Status (1)

Country Link
DE (1) DE899727C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004864B (en) * 1954-02-15 1957-03-21 Friedmann & Maier Ag Test device for fuel injection pumps
DE1179807B (en) * 1960-01-23 1964-10-15 Pleiger Maschf Paul Adjustment device for a swash plate axial piston pump
DE3544806A1 (en) * 1985-12-18 1987-06-19 Bosch Gmbh Robert Testing equipment for setting and testing pneumatically actuated control devices for operating variables

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004864B (en) * 1954-02-15 1957-03-21 Friedmann & Maier Ag Test device for fuel injection pumps
DE1179807B (en) * 1960-01-23 1964-10-15 Pleiger Maschf Paul Adjustment device for a swash plate axial piston pump
DE3544806A1 (en) * 1985-12-18 1987-06-19 Bosch Gmbh Robert Testing equipment for setting and testing pneumatically actuated control devices for operating variables

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