DE3941963A1 - Liq. level indicator esp. vehicle diesel - has immersion unit with transfer tube to display achieving compromise between display damping and response - Google Patents
Liq. level indicator esp. vehicle diesel - has immersion unit with transfer tube to display achieving compromise between display damping and responseInfo
- Publication number
- DE3941963A1 DE3941963A1 DE19893941963 DE3941963A DE3941963A1 DE 3941963 A1 DE3941963 A1 DE 3941963A1 DE 19893941963 DE19893941963 DE 19893941963 DE 3941963 A DE3941963 A DE 3941963A DE 3941963 A1 DE3941963 A1 DE 3941963A1
- Authority
- DE
- Germany
- Prior art keywords
- display
- liquid
- immersion body
- space
- oil
- 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- Withdrawn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
- G01F23/02—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 gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
-
- 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
- G01F23/14—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 measurement of pressure
- G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
- G01F23/162—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid by a liquid column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
Description
Die Funktion wird beschrieben an einer Versuchsvor richtung, wie sie in einem 2,3 l Dieselmotor eines Kleintransporters getestet wurde. Die Zeichnung Blatt 6 zeigt die Versuchsvorrichtung im Maßstab 1 : 1. Der Druck der Ölhöhe (A) wird über den Umfassungs behälter (4) und den Kanälen (3) auf das Gas im Raum (2) und weiter durch das Aufsatzrohr (5), den Verbindungs schlauch (1) und das Aufsatzrohr (8) auf die Anzeige flüssigkeit im Raum (9) übertragen. Diesem Druck entsprechend steigt die Flüssigkeit im durchsich tigen Anzeigerohr (6) proportional auf. Wird als Anzeigeflüssigkeit Öl verwendet, dann steigt das Öl im fast genau gleichem Maß wegen der großen Überset zungsverhältnisse der Querschnitte der Räume (2) und (9) zum Anzeigerohr (6).The function is described on a Versuchsvor device, as it was tested in a 2.3 l diesel engine of a van. The drawing sheet 6 shows the test device on a scale of 1: 1. The pressure of the oil level (A) is via the containment container ( 4 ) and the channels ( 3 ) on the gas in the room ( 2 ) and further through the top tube ( 5 ) , transfer the connecting hose ( 1 ) and the top tube ( 8 ) to the display liquid in the room ( 9 ). According to this pressure, the liquid in the transparent indicator tube ( 6 ) rises proportionally. If oil is used as the indicator liquid, the oil rises to almost the same extent because of the large transmission ratios of the cross sections of the rooms ( 2 ) and ( 9 ) to the indicator tube ( 6 ).
Vor der ersten Inbetriebnahme ist vor der Ölauffüllung der Raum (2) bis über die Ebene (C), der dabei herrschen den Temperatur und dem äußeren Luftdruck entsprechend, mit Öl zu füllen. Danach ist der Schlauch (1) zu verbinden. Hierdurch wird vermieden, daß zu Beginn ein langsames Absinken des Ölstandes vorgetäuscht wird, weil sich der Raum (2) bis zu dieser Höhe nur sehr langsam füllen würde. Spätere Ölwechsel sind ohne Einfluß, da der Umfassungsbehälter (4) einen Ölstand im Raum (2) entsprechend der jeweiligen Tem peratur und des Luftdruckes nach dem Ablassen des Öles hält. Durch Aufwärmung des Öles, Absinken des äußeren Luftdruckes (atmosphärisch und meteorologisch), Dampfbildung aus dem Öl oder einer Kombination hieraus wird im Raum (2) das Öl bis auf die Ebene (C) herab gedrückt und danach durch die Kanäle (3) überschüssiges Gas abgeblasen. Before the first start-up, the room ( 2 ) has to be filled with oil up to level (C), depending on the temperature and the external air pressure. Then connect the hose ( 1 ). This avoids that a slow lowering of the oil level is simulated at the beginning, because the space ( 2 ) would fill up very slowly up to this height. Subsequent oil changes have no influence, since the containment tank ( 4 ) maintains an oil level in the room ( 2 ) in accordance with the respective temperature and air pressure after the oil has been drained. By warming up the oil, lowering the external air pressure (atmospheric and meteorological), generating steam from the oil or a combination thereof, the oil in the room ( 2 ) is pressed down to level (C) and then excess gas through the channels ( 3 ) blown off.
Nach größter Aufheizung des Öles und anschließender Abkühlung auf höchsten Pässen steigt die Ebene (C) maximal nach (D), wenn der Inhalt des Ausgleichs raumes (2) über der Ebene (C) im Verhältnis ca. 1,4 : 1 steht zu den Inhalten der übrigen beteiligten Räumen (5), (1), (8) und des Ausgleichsraumes (10). Bei der in der Zeichnung im Maßstab 1 : 1 dargestellten Vorrichtung mit einem 2,0 m langen Verbindungsschlauch (1) beträgt der Hub der Ebene (C) nach (D) nur 4,5 mm, also 5,5% bei 8,0 cm Füllhöhe (A). Bei sehr selten gleichzeitig auftretenden Extremwerten von Luftdruck und Öltemperatur ergibt sich bei 5,0 l Ölmenge eine Fehlanzeige von nur 0,27 l. Im Normalbetrieb bleibt diese Fehlanzeige unter der Ablesegenauigkeit des Anzeigerohres. Die Kompression des Gases für die Druckübertragung ist noch unbedeutender.After the greatest heating of the oil and subsequent cooling on the highest passes, level (C) rises to a maximum after (D) if the content of the compensation space ( 2 ) above level (C) is in a ratio of approx. 1.4: 1 to the Contents of the other participating rooms ( 5 ), ( 1 ), ( 8 ) and the compensation room ( 10 ). In the device shown in the drawing on a scale of 1: 1 with a 2.0 m connecting hose ( 1 ), the stroke of plane (C) to (D) is only 4.5 mm, i.e. 5.5% at 8.0 cm filling height (A). With extreme values of air pressure and oil temperature that occur very rarely at the same time, a mistake of only 0.27 l results with 5.0 l oil quantity. In normal operation, this false display remains below the reading accuracy of the indicator tube. The compression of the gas for pressure transmission is even less important.
Der anlaufende Motor bringt das kalte Öl zunächst umfangreich in Umlauf. Die Umlaufmenge wird durch Erwär mung schnell geringer. Die Düse (7) kann so gewählt werden, daß hierdurch ein vorübergehendes starkes Absinken im Anzeigerohr (6) wesentlich gemildert wird. Es sollte ein Öl für die Anzeige gewählt werden, das eine möglichst beständige Zähflüssigkeit im Bereich der unterschied lichen Temperaturen im Fahrzeugführerhaus aufweist. Nach Erreichen der Betriebstemperatur nähert sich die Anzeige wieder der des ruhenden Motors, da die Druckhöhe (A) einerseits wegen der ständig im Umlauf gehaltenen geringeren Ölmenge kleiner bleibt, andererseits jedoch größer geworden ist weil der Ölstand im Raum (2) nieder gedrückt wurde. Trotz des zentralen Einbaues des Tauch körpers (I) in der Ölwanne ergibt sich durch Hin- und Herschwappen des Öles bei Verzögerung, Beschleunigung, Kurvenfahrt und Schlaglöchern eine stark wechselnde Druckhöhe (A). Diese Wirkung kann durch die Düse (6) bis zur Unmerklichkeit in der Anzeige gedämpft werden. Ein Kompromiß zwischen einer ausreichenden Dämpfung und einer genügend schnellen Anzeige bei Ölverlust oder Ölnachfüllung ist möglich.The starting engine initially circulates the cold oil extensively. The amount in circulation is quickly reduced by heating. The nozzle ( 7 ) can be selected so that a temporary sharp drop in the indicator tube ( 6 ) is substantially alleviated. An oil should be selected for the display that has a viscosity that is as stable as possible in the range of different temperatures in the vehicle cab. After the operating temperature has been reached, the display approximates that of the engine at rest, since the pressure head (A) remains smaller on the one hand because of the smaller amount of oil constantly circulating, but on the other hand it has increased because the oil level in the room ( 2 ) has been depressed. Despite the central installation of the immersion body (I) in the oil pan, the oil sloshing back and forth during deceleration, acceleration, cornering and potholes results in a strongly changing pressure head (A). This effect can be dampened by the nozzle ( 6 ) until it is imperceptible in the display. A compromise is possible between sufficient damping and a sufficiently quick display in the event of oil loss or oil refilling.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893941963 DE3941963A1 (en) | 1989-12-15 | 1989-12-15 | Liq. level indicator esp. vehicle diesel - has immersion unit with transfer tube to display achieving compromise between display damping and response |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893941963 DE3941963A1 (en) | 1989-12-15 | 1989-12-15 | Liq. level indicator esp. vehicle diesel - has immersion unit with transfer tube to display achieving compromise between display damping and response |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3941963A1 true DE3941963A1 (en) | 1991-06-20 |
Family
ID=6395825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19893941963 Withdrawn DE3941963A1 (en) | 1989-12-15 | 1989-12-15 | Liq. level indicator esp. vehicle diesel - has immersion unit with transfer tube to display achieving compromise between display damping and response |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3941963A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1567758A (en) * | 1924-06-17 | 1925-12-29 | Schriever Luder | Oil-level indicator for ships' bunkers, oil containers, and the like |
US2121743A (en) * | 1927-02-21 | 1938-06-21 | Cornellus V Oyen | Liquid gauge |
DE1192837B (en) * | 1962-12-01 | 1965-05-13 | Basf Ag | Device for measuring the level of liquefied gases |
DE2109227A1 (en) * | 1971-02-26 | 1972-09-07 | Rinck Th | Method and device for measuring the oil level in containers, in particular in the crankcase of an internal combustion engine |
DE2327794B2 (en) * | 1973-06-01 | 1975-06-19 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Oil filler line with level indicator and a filler opening for an oil container of an internal combustion engine |
DE2503788A1 (en) * | 1975-01-30 | 1976-08-05 | Turk Ernst L | Pneumatic oil level indicator for vehicle IC engine - is worked by hand operated pump to give remote reading |
DE2752735C2 (en) * | 1976-11-26 | 1984-11-08 | D.B.A. Bendix Lockheed Air Equipement S.A., Clichy, Hauts-de-Seine | Level indicator |
-
1989
- 1989-12-15 DE DE19893941963 patent/DE3941963A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1567758A (en) * | 1924-06-17 | 1925-12-29 | Schriever Luder | Oil-level indicator for ships' bunkers, oil containers, and the like |
US2121743A (en) * | 1927-02-21 | 1938-06-21 | Cornellus V Oyen | Liquid gauge |
DE1192837B (en) * | 1962-12-01 | 1965-05-13 | Basf Ag | Device for measuring the level of liquefied gases |
DE2109227A1 (en) * | 1971-02-26 | 1972-09-07 | Rinck Th | Method and device for measuring the oil level in containers, in particular in the crankcase of an internal combustion engine |
DE2327794B2 (en) * | 1973-06-01 | 1975-06-19 | Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Oil filler line with level indicator and a filler opening for an oil container of an internal combustion engine |
DE2503788A1 (en) * | 1975-01-30 | 1976-08-05 | Turk Ernst L | Pneumatic oil level indicator for vehicle IC engine - is worked by hand operated pump to give remote reading |
DE2752735C2 (en) * | 1976-11-26 | 1984-11-08 | D.B.A. Bendix Lockheed Air Equipement S.A., Clichy, Hauts-de-Seine | Level indicator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8122 | Nonbinding interest in granting licenses declared | ||
8139 | Disposal/non-payment of the annual fee |