DE102005050507A1 - Lubricant circulation system for an internal combustion engine comprises a lubricant container from which is pumped a partial amount of lubricant from a lubricant container using a low pressure pump - Google Patents

Lubricant circulation system for an internal combustion engine comprises a lubricant container from which is pumped a partial amount of lubricant from a lubricant container using a low pressure pump Download PDF

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Publication number
DE102005050507A1
DE102005050507A1 DE200510050507 DE102005050507A DE102005050507A1 DE 102005050507 A1 DE102005050507 A1 DE 102005050507A1 DE 200510050507 DE200510050507 DE 200510050507 DE 102005050507 A DE102005050507 A DE 102005050507A DE 102005050507 A1 DE102005050507 A1 DE 102005050507A1
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Germany
Prior art keywords
lubricant
container
internal combustion
combustion engine
pumped
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.)
Ceased
Application number
DE200510050507
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German (de)
Inventor
Thomas Christ
Andreas Menlo Park Eder
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE200510050507 priority Critical patent/DE102005050507A1/en
Publication of DE102005050507A1 publication Critical patent/DE102005050507A1/en
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/126—Dry-sumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Lubricant circulation system comprises a first lubricant container from which is pumped a lubricant using a pump to lubricating sites in an engine and a second lubricant container from which is pumped a partial amount of lubricant using a low pressure pump. The second lubricant container has a heat insulation. The first lubricant container is connected to the second lubricant container. Preferred Features: The low pressure pump is a pneumatic pump.

Description

Die Erfindung betrifft einen Schmiermittelkreislauf für eine Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des Patentanspruches 1.The The invention relates to a lubricant circuit for an internal combustion engine with the features of the preamble of claim 1.

Sie geht von der deutschen Offenlegungsschrift 27 28 066 aus. In dieser ist ein Öl-Luft-Wärmetauscher für eine Brennkraftmaschine sowie deren Schmiermittelkreislauf beschrieben. Die Brennkraftmaschine verfügt über einen ersten Schmiermittelbehälter, in dem zwei separate Pumpen angeordnet sind. Die erste Pumpe dient der Schmiermittelversorgung der Brennkraftmaschine, mit der zweiten Pumpe kann eine Teilmenge des Schmiermittels in einen zweiten Schmiermittelbehälter gepumpt werden, dessen Volumen kleiner ist als das des ersten Schmiermittelbehälters. Der zweite Schmiermittelbehälter verfügt über eine Aufheizvorrichtung, um beim Start der Brennkraftmaschine schnell warmes Schmiermittel zur Schmierung der Brennkraftmaschine bereitstellen zu können.she is based on German Offenlegungsschrift 27 28 066. In this is an oil-air heat exchanger for one Internal combustion engine and the lubricant circuit described. The internal combustion engine has a first lubricant container, in which two separate pumps are arranged. The first pump is used the lubricant supply of the internal combustion engine, with the second Pump can pumped a subset of the lubricant in a second lubricant reservoir be whose volume is smaller than that of the first lubricant container. Of the second lubricant container has one Heating device to quickly start the engine provide warm lubricant for lubrication of the internal combustion engine to be able to.

Nachteilig bei der beschriebenen Ausgestaltung ist der relativ hohe bauliche Aufwand des Schmiermittelkreislaufes mit der Aufheizvorrichtung.adversely in the described embodiment, the relatively high structural Effort of the lubricant circuit with the heating device.

Aufgabe der vorliegenden Erfindung ist es, einen einfacheren Schmiermittelkreisaufbau für eine gattungsgemäße Brennkraftmaschine aufzuzeigen.task It is the object of the present invention to provide a simpler lubricant circuit construction for a generic internal combustion engine show.

Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruches 1 dadurch gelöst, dass die zweite Pumpe eine Unterdruckpumpe ist und der zweite Schmiermittelbehälter eine Wärmeisolierung gegenüber der Umgebung aufweist.These The object is achieved by the features in the characterizing part of claim 1 solved by the second pump is a vacuum pump and the second lubricant reservoir is a thermal insulation across from the environment has.

Durch die Wärmeisolierung des zweiten Schmiermittelbehälters kann in vorteilhafter Weise eine aktive Aufheizung des Schmiermittels im zweiten Schmiermittelbehälter entfallen. Da in modernen Kraftfahrzeugen ohnehin serienmäßig eine Unterdruckpumpe verbaut ist, beispielsweise zur Unterstützung des Bremssystems, ist es sinnvoll, diese Pumpe gleichzeitig für das Umpumpen des Schmiermittels zu verwenden. Somit wird der bauliche Aufwand für den Schmiermittelkreislauf deutlich vereinfacht.By the thermal insulation of the second lubricant container can advantageously an active heating of the lubricant in the second lubricant container omitted. As in modern motor vehicles in series anyway Vacuum pump is installed, for example, to support the Brake system, it makes sense to pump this pump at the same time to use the lubricant. Thus, the construction effort for the Lubricant circulation significantly simplified.

Die Ausgestaltung im Patentanspruch 2 ist eine besonders bevorzugte Ausführungsvariante. Vorzugsweise kommt eine zentrale Pneumatikpumpe, wie sie beispielsweise für einen Bi-Druckverstärker eingesetzt wird, zum Einsatz. Auch diese zentrale Pneumatikpumpe kann zur Unterstützung des Bremssystems eingesetzt werden.The Embodiment in claim 2 is a particularly preferred Embodiment. Preferably comes a central pneumatic pump, as for example for a Bi-booster used, is used. Also this central pneumatic pump can be for support be used of the braking system.

Die Idee ist, im Warmlauf der Brennkraftmaschine mit einer reduzierten Schmiermittelmenge zu fahren. Dadurch können zum einen Planschverluste reduziert werden. Zum anderen erwärmt sich die reduzierte Schmiermittelmenge schneller. Eine konstruktive Umsetzung ist die bekannte Trockensumpfschmierung. Der neue Ansatz erfordert die Möglichkeit, Schmiermittel in einen separaten Behälter zu saugen, um es nach einem Brennkraftmaschinenwarmlauf dieser wieder zuzuführen. Bevorzugt wird das Schmiermittel mittels einer Unterdruckpumpe in den zweiten Schmiermittelbehälter gesaugt. Eine weitere, besonders elegante Umsetzung erfolgt mittels einer Über-/Unterdruckpumpe. In diesem Fall wird der Druck wird z.B. von einer zentralen Pneumatikpumpe, wie sie auch für Bi-Druckverstärker vorgesehen ist, bereitgestellt. Diese Variante eröffnet auch die Möglichkeit das Schmiermittel mittels Überdruck in den zweiten Schmiermittelbehälter zu pumpen.The Idea is in the warm-up of the internal combustion engine with a reduced To drive lubricant quantity. This can be reduced on the one hand churning losses become. On the other hand warmed up The reduced amount of lubricant faster. A constructive Implementation is the well-known dry sump lubrication. The new approach requires the possibility Lubricate in a separate container to suck it out an engine warming this feed again. Prefers the lubricant is in the second by means of a vacuum pump lubricant container sucked. Another, particularly elegant implementation is carried out by means of a positive / negative pressure pump. In this case, the pressure will be e.g. from a central pneumatic pump, as well as for Bi-booster is provided provided. This variant also opens the possibility the lubricant by means of overpressure in the second lubricant container to pump.

Ferner wird durch die Wärmeisolierung des zweiten Schmiermittelbehälters gegenüber der Umgebung das Schmiermittel warm gehalten und somit die interne Reibung der Brennkraftmaschine nach einem Start, insbesondere nach einem Kaltstart, reduziert. Nach einer Fahrt mit dem Kraftfahrzeug wird das warme Schmiermittel durch Unterdruck, oder wie oben beschrieben durch Überdruck, in den zweiten Schmiermittelbehälter gesaugt oder gepumpt. Durch die Wärmeisolierung kühlt das Schmiermittel langsamer ab und hat somit beim erneuten Brennkraftmaschinenstart eine höhere Temperatur.Further is through the heat insulation of the second lubricant container across from the environment the lubricant kept warm and thus the internal Friction of the internal combustion engine after a start, especially after a cold start, reduced. After a drive in the car is the warm lubricant by negative pressure, or as described above by overpressure, in the second lubricant container sucked or pumped. By the heat insulation that cools Lubricant slower and thus has the renewed engine start a higher one Temperature.

Somit führt die Erfindung neben der Bereitstellung eines einfacheren Schmiermittelsystems zur Reduzierung des Kraftstoffverbrauches der Brennkraftmaschine. Durch das verbesserte Warmlaufverhalten der Brennkraftmaschine wird eine Komfortsteigerung erzielt. Darüber hinaus können weitere Wärmemaßnahmen, wie z.B. Zusatzheizer, entfallen.Consequently leads the Invention besides providing a simpler lubricant system for reducing the fuel consumption of the internal combustion engine. Due to the improved warm-up behavior of the internal combustion engine is achieved a comfort increase. In addition, more can Heat measures such as. Additional heater, omitted.

Claims (2)

Schmiermittelkreislauf für eine Brennkraftmaschine, bestehend aus einem ersten Schmiermittelbehälter, aus dem ein Schmiermittel mit einer ersten Pumpe zu den zu schmierenden Stellen in der Brennkraftmaschine pumpbar ist, sowie einem zweiten Schmiermittelbehälter, der schmiermittelführend mit dem ersten Schmiermittelbehälter verbunden ist, in den eine Teilmenge des Schmiermittels aus dem ersten Schmiermittelbehälter mit einer zweiten Pumpe pumpbar ist, wobei das Schmiermittel aus dem zweiten Schmiermittelbehälter in den ersten Schmiermittelbehälter rückführbar ist, dadurch gekennzeichnet, dass die zweite Pumpe eine Unterdruckpumpe ist und der zweite Schmiermittelbehälter eine Wärmeisolierung gegenüber einer Umgebung aufweist.Lubricant circuit for an internal combustion engine, consisting of a first lubricant reservoir, from which a lubricant is pumped with a first pump to be lubricated points in the internal combustion engine, and a second lubricant reservoir, which is lubricant-carrying connected to the first lubricant reservoir into which a subset of the lubricant can be pumped from the first lubricant container with a second pump, wherein the lubricant from the second lubricant container in the first lubricant container is traceable, characterized in that the second pump is a vacuum pump is and the second lubricant container has a thermal insulation against an environment. Schmiermittelkreislauf nach Patentanspruch 1, dadurch gekennzeichnet, dass die Unterdruckpumpe eine pneumatische Pumpe ist.Lubricant circuit according to claim 1, characterized characterized in that the vacuum pump is a pneumatic pump is.
DE200510050507 2005-10-21 2005-10-21 Lubricant circulation system for an internal combustion engine comprises a lubricant container from which is pumped a partial amount of lubricant from a lubricant container using a low pressure pump Ceased DE102005050507A1 (en)

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Application Number Priority Date Filing Date Title
DE200510050507 DE102005050507A1 (en) 2005-10-21 2005-10-21 Lubricant circulation system for an internal combustion engine comprises a lubricant container from which is pumped a partial amount of lubricant from a lubricant container using a low pressure pump

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DE200510050507 DE102005050507A1 (en) 2005-10-21 2005-10-21 Lubricant circulation system for an internal combustion engine comprises a lubricant container from which is pumped a partial amount of lubricant from a lubricant container using a low pressure pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009028455A1 (en) 2009-08-11 2011-02-17 Ford Global Technologies, LLC, Dearborn Combustion engine has coolant circuit and lubricant circuit having lubricant conduit, which transports lubricant to necessary lubricating point of combustion engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168698B (en) * 1962-04-11 1964-04-23 Henschel Werke Ag Device for keeping the lubricating oil of internal combustion engines warm
DE2230000A1 (en) * 1972-06-20 1974-01-10 Porsche Ag DEVICE FOR SUPPLYING LUBRICANT FROM COMBUSTION MACHINERY
DE2263282A1 (en) * 1972-12-23 1974-06-27 Porsche Ag LUBRICATING OIL CIRCUIT OF COMBUSTION MACHINERY FOR MOTOR VEHICLES
DE2728066A1 (en) * 1977-06-22 1979-01-11 Karl J Ing Grad Lohaus Air cooled engine oil cooling system - has second reservoir for cooler oil preheated before start when it feeds oil circuit in engine
DE4333854A1 (en) * 1993-10-05 1995-04-06 Daimler Benz Ag Lubricating oil system for an internal combustion engine
DE4431105A1 (en) * 1994-09-01 1996-03-07 Himmelsbach Johann IC engine lubricating oil cooling process
DE10300411A1 (en) * 2003-01-09 2004-07-22 Harald Gasse Hot oil management system for IC engine has a dry sump with hot oil stored in a thermally insulated reservoir and pumped to specific sites on start up

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168698B (en) * 1962-04-11 1964-04-23 Henschel Werke Ag Device for keeping the lubricating oil of internal combustion engines warm
DE2230000A1 (en) * 1972-06-20 1974-01-10 Porsche Ag DEVICE FOR SUPPLYING LUBRICANT FROM COMBUSTION MACHINERY
DE2263282A1 (en) * 1972-12-23 1974-06-27 Porsche Ag LUBRICATING OIL CIRCUIT OF COMBUSTION MACHINERY FOR MOTOR VEHICLES
DE2728066A1 (en) * 1977-06-22 1979-01-11 Karl J Ing Grad Lohaus Air cooled engine oil cooling system - has second reservoir for cooler oil preheated before start when it feeds oil circuit in engine
DE4333854A1 (en) * 1993-10-05 1995-04-06 Daimler Benz Ag Lubricating oil system for an internal combustion engine
DE4431105A1 (en) * 1994-09-01 1996-03-07 Himmelsbach Johann IC engine lubricating oil cooling process
DE10300411A1 (en) * 2003-01-09 2004-07-22 Harald Gasse Hot oil management system for IC engine has a dry sump with hot oil stored in a thermally insulated reservoir and pumped to specific sites on start up

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009028455A1 (en) 2009-08-11 2011-02-17 Ford Global Technologies, LLC, Dearborn Combustion engine has coolant circuit and lubricant circuit having lubricant conduit, which transports lubricant to necessary lubricating point of combustion engine

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