DE10315413A1 - Dipstick for measuring oil level of internal combustion engine, has closure part with through-hole in direction of dipstick, which can be closed by handle - Google Patents
Dipstick for measuring oil level of internal combustion engine, has closure part with through-hole in direction of dipstick, which can be closed by handle Download PDFInfo
- Publication number
- DE10315413A1 DE10315413A1 DE2003115413 DE10315413A DE10315413A1 DE 10315413 A1 DE10315413 A1 DE 10315413A1 DE 2003115413 DE2003115413 DE 2003115413 DE 10315413 A DE10315413 A DE 10315413A DE 10315413 A1 DE10315413 A1 DE 10315413A1
- Authority
- DE
- Germany
- Prior art keywords
- dipstick
- handle
- closure element
- hole
- measuring tube
- 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- Withdrawn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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft einen Messstab gemäß den Merkmalen im Oberbegriff des Patentanspruchs 1.The Invention relates to a dipstick according to the features in the preamble of claim 1.
Sie
geht von der deutschen Patentschrift
Im Rahmen der Weiterentwicklung von Brennkraftmaschinen, sowie im Hinblick auf verschärfte Emissionsgesetze werden Brennkraftmaschinen heutzutage immer emissionsärmer aufgebaut. Hieraus resultiert, dass auch der Ölwannenraum immer gasdichter ausgelegt wird. Durch diese gasdichte Auslegung der Ölwannenräume wird beim Einschieben des Messstabes in das Messrohr von dem Verschlusselement in Verbindung mit der Dichtung ein Luftvolumen in das Messrohr hineingeschoben. Da der Ölwannenraum weitgehend gasdicht ist, schiebt das Verschlusselement das Luftvolumen leicht komprimiert vor sich her, wodurch bei einer Messung der Ölstand in dem Messrohr erniedrigt wird und bei einer Ölstandsmessung die Ölstandshöhe verfälscht, bzw. zu niedrig angezeigt wird. Dieser nicht systematische Messfehler führt zu einer nicht reproduzierbaren Ölstandshöhenermittelung. Aufgrund einer solchen Fehlmessung besteht die Gefahr, dass Öl bzw. Schmiermittel nachgefüllt wird, obwohl dies nicht nötig ist. Dieser dann zu hohe Schmiermittelstand kann jedoch beim Betrieb der Brennkraftmaschine zu Störungen im Schmiermittelkreislauf führen.in the As part of the further development of internal combustion engines, as well as with regard on tightened Emission laws are today built internal combustion engines ever lower emissions. As a result, the oil sump area is also increasingly gas-tight is interpreted. This gas-tight design of the oil pan rooms when inserting the measuring rod into the measuring tube from the closure element an air volume is pushed into the measuring tube in connection with the seal. Because the oil pan room is largely gas-tight, the closure element pushes the air volume slightly compresses in front of itself, whereby the oil level in the measuring tube is lowered and the oil level is distorted when measuring the oil level, or is displayed too low. This non-systematic measurement error leads to a non-reproducible oil level determination. Due to such an incorrect measurement, there is a risk that oil or lubricants refilled will, although this is not necessary is. This excessively high lubricant level can, however, occur during operation the internal combustion engine to malfunctions in the lubricant circuit.
Aufgabe der vorliegenden Erfindung ist es, einen Ölmessstab aufzuzeigen, mit dem derartige Fehlmessungen vermieden werden.task the present invention is to show an oil dipstick with which such incorrect measurements are avoided.
Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This Task is by the feature in the characterizing part of the claim 1 solved.
Um ein Komprimieren der Luft im Messrohr zu verhindern, weist das Verschlusselement eine größtenteils in Richtung des Messstabes ausgerichtete Durchgangsbohrung auf, die den Ölraum mit der Umgebungsluft verbindet. Durch diese Maßnahme wird verhindert, dass beim Einschieben des Messstabes, bzw. des Verschlusselementes in das Messrohr die Luft im Messrohr komprimiert wird. Damit anschließend keine Dämpfe durch die Durchgangsbohrung in die Umgebung entweichen, ist diese Durchgangsbohrung wiederum mit einem Griff verschließbar.Around The closure element has to prevent compression of the air in the measuring tube for the most part through hole aligned in the direction of the measuring rod, the the oil room connects with the ambient air. This measure prevents when inserting the dipstick or the locking element in the measuring tube the air in the measuring tube is compressed. So that none afterwards fumes escape through the through hole into the environment, this is Through hole can be closed with a handle.
Um die Durchgangsbohrung mit dem Griff zu verschließen, ist gemäß Patentanspruch 2 der Griff entweder schiebebeweglich oder über ein Gewinde mit dem Verschlusselement verbunden und weist gemäß Patentanspruch 3 ein Dichtelement auf, welches zum Verschließen der Durchgangsbohrung geeignet ist. Dieses kann gemäß Patentanspruch 4 sowohl eine Runddichtung oder eine Flachdichtung sein.Around Closing the through hole with the handle is according to claim 2 the handle is either movable or via a thread with the locking element connected and has according to claim 3 a sealing element, which is suitable for closing the through hole is. This can according to claim 4 can be either a round seal or a flat seal.
Um das Einschieben des Messstabes in das Messrohr zu erleichtern, weist dieses gemäß Patentanspruch 5 an dem Ende, an dem der Messstab in das Messrohr eingeschoben wird, einen aufgeweiteten Bereich auf. Dies ist üblicherweise ein aufgebördelter Bereich.Around to facilitate the insertion of the dipstick into the measuring tube this according to claim 5 at the end where the dipstick is inserted into the measuring tube becomes a widened area. This is usually a flared one Area.
Um ein ungewolltes Lösen des Verschlusselementes aus dem Messrohr zu verhindern, weist der Messstab gemäß der Patentansprüche 6 bis 10 mehrere Sicherungsvorkehrungen auf. Zur Fixierung des Verschlusselementes in dem Messrohr, weist dieses einen Bereich auf, der den aufgeweiteten Bereich des Messrohres überragt. Dieser aufgeweitete Bereich verfügt wiederum über einen zu dem aufgeweiteten Bereich korrespondierenden Hinterschnitt. Wird das Verschlusselement bis zum Anschlag in das Messrohr eingeschoben, so verrasten der aufgeweitete Bereich und der Hinterschnitt miteinander und bilden einen Formschluss. Damit ein unbeabsichtigtes Lösen des Formschlusses vermieden wird, weist der Griff einen den Bereich des Formschlusses überdeckenden übergreifenden Abschnitt auf. Dieser übergreift den Formschluss zunehmend, wenn der Griff durch eine Schiebebe- oder Drehbewegung in Richtung Verschlusselement bewegt wird.Around an unwanted loosening To prevent the closure element from the measuring tube, the measuring rod according to claims 6 to 10 several safeguards. For fixing the closure element in the measuring tube, this has an area that the expanded Exceeds the area of the measuring tube. This expanded area has again about an undercut corresponding to the expanded area. If the closure element is pushed into the measuring tube as far as it will go, the widened area and the undercut lock together and form a positive connection. So that an unintentional loosening of the Form locking is avoided, the handle has a the area overlapping of the form fit Section on. This spills over the form fit increasingly if the handle is or rotational movement in the direction of the closure element.
Um die Dichtwirkung des Verschlusselementes gegenüber dem Messrohr zu erhöhen, weist dieses entsprechend Patentanspruch 11 zumindest eine radial am Außenumfang verlaufende Dichtung auf.Around to increase the sealing effect of the closure element against the measuring tube this according to claim 11 at least one radially on the outer circumference running seal.
Im Folgenden ist der erfindungsgemäße Messstab anhand eines bevorzugten Ausführungsbeispieles in drei Figuren näher erläutert.The following is the inventive one Dipstick explained in more detail in three figures using a preferred embodiment.
Für gleiche
Bauteile gelten die gleichen Bezugszeichen in allen drei Figuren.
Die
Im
Weiteren wird der Verschluss- und Sicherungsmechanismus erläutert.
Anstelle
der in den
Mit
dem erfindungsgemäßen Messstab
- 11
- Messstabdipstick
- 22
- Verschlusselementclosure element
- 2'2 '
- Überragender Abschnittoutstanding section
- 2''2 ''
- Hinterschnittundercut
- 33
- GriffHandle
- 3'3 '
- Übergreifender Abschnittcross section
- 44
- DurchgangsbohrungThrough Hole
- 55
- Dichtelementsealing element
- 66
- Messrohrmeasuring tube
- 6'6 '
- Aufweitungwidening
- 7, 7'7, 7 '
- Dichtungpoetry
- 88th
- Einstichpuncture
- 8'8th'
- Absatzparagraph
- 99
- Gewindethread
- 9'9 '
- SacklochgewindeBlind hole
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003115413 DE10315413A1 (en) | 2003-04-04 | 2003-04-04 | Dipstick for measuring oil level of internal combustion engine, has closure part with through-hole in direction of dipstick, which can be closed by handle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003115413 DE10315413A1 (en) | 2003-04-04 | 2003-04-04 | Dipstick for measuring oil level of internal combustion engine, has closure part with through-hole in direction of dipstick, which can be closed by handle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10315413A1 true DE10315413A1 (en) | 2004-10-14 |
Family
ID=32981050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003115413 Withdrawn DE10315413A1 (en) | 2003-04-04 | 2003-04-04 | Dipstick for measuring oil level of internal combustion engine, has closure part with through-hole in direction of dipstick, which can be closed by handle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10315413A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016209959B3 (en) * | 2016-06-07 | 2017-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Device for measuring the oil level in an internal combustion engine |
DE102016209960B3 (en) * | 2016-06-07 | 2017-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Device for measuring the oil level in an internal combustion engine |
WO2020064202A1 (en) * | 2018-09-26 | 2020-04-02 | Bayerische Motoren Werke Aktiengesellschaft | Measuring rod, in particular oil dip-stick for an internal combustion engine, in particular of a motor vehicle, arrangement of such a measuring rod in a guide tube, and motor vehicle |
EP3933178A1 (en) * | 2020-07-04 | 2022-01-05 | DEUTZ Aktiengesellschaft | Combustion engine with oil dipstick with permanent magnet fixation and oil dipstick hole with permanent magnet fixation |
DE102021128062A1 (en) | 2021-10-28 | 2023-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Dipstick, in particular oil dipstick, for a vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB734540A (en) * | 1952-09-25 | 1955-08-03 | Cooper S Mechanical Joints Ltd | A dip-stick and air filter assembly for an engine crankcase or the like |
DE4214835A1 (en) * | 1992-05-05 | 1993-11-11 | Bayerische Motoren Werke Ag | Filling up of liquid container esp. motor vehicle oil tank - filling to level measured by dip stick, inserting suction stick and withdrawing fluid until air is detected by light barrier |
DE19544968A1 (en) * | 1995-12-01 | 1997-06-05 | Schuette Reiner | Stopper for closing and opening aperture especially fuel tank at filling station |
WO2003054491A2 (en) * | 2001-12-20 | 2003-07-03 | Schneegans Gmbh | Measuring rod |
-
2003
- 2003-04-04 DE DE2003115413 patent/DE10315413A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB734540A (en) * | 1952-09-25 | 1955-08-03 | Cooper S Mechanical Joints Ltd | A dip-stick and air filter assembly for an engine crankcase or the like |
DE4214835A1 (en) * | 1992-05-05 | 1993-11-11 | Bayerische Motoren Werke Ag | Filling up of liquid container esp. motor vehicle oil tank - filling to level measured by dip stick, inserting suction stick and withdrawing fluid until air is detected by light barrier |
DE19544968A1 (en) * | 1995-12-01 | 1997-06-05 | Schuette Reiner | Stopper for closing and opening aperture especially fuel tank at filling station |
WO2003054491A2 (en) * | 2001-12-20 | 2003-07-03 | Schneegans Gmbh | Measuring rod |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016209959B3 (en) * | 2016-06-07 | 2017-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Device for measuring the oil level in an internal combustion engine |
DE102016209960B3 (en) * | 2016-06-07 | 2017-08-17 | Bayerische Motoren Werke Aktiengesellschaft | Device for measuring the oil level in an internal combustion engine |
WO2020064202A1 (en) * | 2018-09-26 | 2020-04-02 | Bayerische Motoren Werke Aktiengesellschaft | Measuring rod, in particular oil dip-stick for an internal combustion engine, in particular of a motor vehicle, arrangement of such a measuring rod in a guide tube, and motor vehicle |
CN112469890A (en) * | 2018-09-26 | 2021-03-09 | 宝马股份公司 | Measuring rod, in particular dipstick, for an internal combustion engine, in particular of a motor vehicle, arrangement of such a measuring rod in a guide tube, and motor vehicle |
US11859521B2 (en) | 2018-09-26 | 2024-01-02 | Bayerische Motoren Werke Aktiengesellschaft | Measuring rod, in particular oil dip-stick, for an internal combustion engine, in particular of a motor vehicle, arrangement of such a measuring rod in a guide tube, and motor vehicle |
EP3933178A1 (en) * | 2020-07-04 | 2022-01-05 | DEUTZ Aktiengesellschaft | Combustion engine with oil dipstick with permanent magnet fixation and oil dipstick hole with permanent magnet fixation |
DE102021128062A1 (en) | 2021-10-28 | 2023-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Dipstick, in particular oil dipstick, for a vehicle |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8130 | Withdrawal |