EP0664381B1 - Internal combustion engine with cooling means circuit - Google Patents
Internal combustion engine with cooling means circuit Download PDFInfo
- Publication number
- EP0664381B1 EP0664381B1 EP94118644A EP94118644A EP0664381B1 EP 0664381 B1 EP0664381 B1 EP 0664381B1 EP 94118644 A EP94118644 A EP 94118644A EP 94118644 A EP94118644 A EP 94118644A EP 0664381 B1 EP0664381 B1 EP 0664381B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- cooling medium
- coolant
- pump
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
- F01P2005/125—Driving auxiliary pumps electrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
Definitions
- the invention relates to an internal combustion engine with at least one Cooling circuit in which a by a coolant pump through at least the internal combustion engine and a heat exchanger conveyable coolant circulates that while the engine is at a standstill is heatable, the cooling water from one during standstill the coolant pump which can be driven by the internal combustion engine the coolant circuit can be promoted.
- Such an internal combustion engine is known from FR-A-1 085 207.
- This document discloses an internal combustion engine, the one has flanged gearbox on the crankshaft, which via a Flywheel is connectable to an auxiliary engine. This is in turn connected to a coolant pump via a coupling.
- a coolant pump For preheating the cooling water of the internal combustion engine now operated the auxiliary engine and this drives the coolant pump on. Then the cooling water from the coolant pump is initially promoted by the cooling water room Auxiliary internal combustion engine conveyed and only then in the individual cylinders the water jacket surrounding the cylinders of the internal combustion engine. From these, the cooling water becomes the coolant pump promoted back.
- the internal combustion engine is operated itself and accordingly the cooling water is heated to the extent that it is passed through the cooler 18, it is via a line to a Pumped back on the outlet side of the coolant pump. That is, during normal operation of the internal combustion engine, the Coolant pump in the delivery of the cooling water through the radiator no function and the whole connected to the crankshaft Auxiliary device, consisting of gear, flywheel, auxiliary engine and the coolant pump can usefully be switched off will. For pumping the cooling water during operation the internal combustion engine is therefore a further cooling water pump, not shown required.
- the still known DE-A-29 40 643 is a Internal combustion engine in which the oil of the internal combustion engine is preheated can be.
- This is a device that especially as an external system to the internal combustion engine Quick couplings can be connected or through the internal combustion engine itself or an additional electric motor can be driven. In any case, it is an adaptive system that is additionally connected to the internal combustion engine and actually Operation of the internal combustion engine has no function.
- the invention has for its object this generic To further develop the device in such a way that the lowest possible additional construction effort while heating the cooling water the shutdown of the internal combustion engine is possible.
- This object is achieved in that the coolant by the during the standstill of the internal combustion engine drivable coolant pump conveyable through the coolant circuit is.
- This embodiment of the invention has several findings underlying. At first it was found out in experiments that heating of the cooling water during the standstill of the Internal combustion engine to about 40 ° C compared to not heated Cooling water causes significantly improved exhaust gas quality, at the same time but also a better start of the internal combustion engine better and faster ignition of the combustion mixture enables and thereby a faster start up overall the operating point of the internal combustion engine can be reached. This is particularly so important for gas engine systems, for example in one Combined heat and power plants are used and where according to the requirement of electrical energy or heat, if possible must be provided immediately.
- Coolant pump uses a single pump, whereby this pump during the operation of the internal combustion engine the cooling water for cooling purposes and during standstill the internal combustion engine - as described - for heating purposes.
- the coolant pump is dependent operable from the coolant temperature. This can be done with simple Average the specified coolant temperature, for example in a range between 38 ° C and 40 ° C can be adjusted by for example, a temperature sensor in the coolant circuit is switched on over which the drive of the coolant pump on and is turned off. This is particularly useful when using the Internal combustion engine in combined heat and power plants the aforementioned electrical drive of the coolant pump.
- the delivery capacity of the coolant pump is a further development of the invention adjustable depending on the coolant temperature.
- the specified coolant temperature can be achieved with simple means for example, set from 40 ° C, for example a temperature sensor in the coolant circuit is turned on is used to regulate the drive of the coolant pump. Also this is particularly useful when using the internal combustion engine in Combined heat and power plants the aforementioned electric drive Coolant pump on.
- a throttle in the coolant circuit switchable In a development of the invention is at least during the standstill the internal combustion engine a throttle in the coolant circuit switchable.
- the restriction results from the restricted flow area an increased flow rate of the cooling water, which ultimately results from fluid friction in an increase in temperature of the coolant.
- the throttle has a variable one Throttle cross section. This can make an adjustment to the given requirements regarding an additional Coolant heating by changing the throttle cross section respectively.
- the throttle cross section changeable depending on the coolant temperature. This facility can interact with the scheme the coolant pump a favorable interaction of these two components be guaranteed with regard to heating the coolant.
- the figure shows a coolant circuit designed according to the invention Internal combustion engine, in particular as a gas engine system for combined heat and power plants is trained.
- the coolant circuit is arranged outside the internal combustion engine 1 Coolant pump 2, which is controlled by an electric motor 3 is.
- the coolant pump 2 conveys the coolant through a connecting line, in which a flexible connection 4a is installed, in the coolant circuit the internal combustion engine 1, which in turn drives a generator 5.
- the output from the coolant circuit of the internal combustion engine is in turn provided with a flexible connection 4b, and in the further course of External coolant line is an adjustable and lockable throttle 6 used.
- a branch line behind the throttle 6 provided, in which a vent valve 7 and a pressure relief valve 8 are switched on.
- the coolant continues through the main circuit a heat exchanger 9, from there back into the inlet of the coolant pump 2 to arrive. It is between the heat exchanger 9 and the Coolant pump 2, a further branch line is provided, into which an expansion tank 10 and a further pressure relief valve 11 are switched on.
- the coolant pump 2 By operating the coolant pump 2 during the When the internal combustion engine 1 is at a standstill, the coolant is heated to approximately 40 ° C. This preheating results in better starting behavior Internal combustion engine and the internal combustion engine 1 can with low exhaust gas emission values are brought up to their operating point more quickly. Another significant advantage is a significant reduction in wear the internal combustion engine.
Description
Die Erfindung betrifft eine Brennkraftmaschine mit wenigstens einem Kühlkreislauf, in dem ein von einer Kühlmittelpumpe durch zumindest die Brennkraftmaschine und einen Wärmetauscher förderbares Kühlmittel zirkuliert, daß während des Stillstandes der Brennkraftmaschine erhitzbar ist, wobei das Kühlwasser von einer während des Stillstandes der Brennkraftmaschine antreibbaren Kühlmittelpumpe durch den Kühlmittelkreislauf förderbar ist.The invention relates to an internal combustion engine with at least one Cooling circuit in which a by a coolant pump through at least the internal combustion engine and a heat exchanger conveyable coolant circulates that while the engine is at a standstill is heatable, the cooling water from one during standstill the coolant pump which can be driven by the internal combustion engine the coolant circuit can be promoted.
Eine derartige Brennkraftmaschine ist aus der FR-A-1 085 207 bekannt. Dieses Dokument offenbart eine Brennkraftmaschine, die ein an der Kurbelwelle angeflanschtes Getriebe aufweist, das über ein Schwungrad mit einer Hilfsbrennkraftmaschine verbindbar ist. Diese ist wiederum über eine Kupplung mit einer Kühlmittelpumpe verbunden. Zum Vorwärmen des Kühlwassers der Brennkraftmaschine wird nun die Hilfsbrennkraftmaschine betrieben und diese treibt die Kühlmittelpumpe an. Dabei wird dann das Kühlwasser, das von der Kühlmittelpumpe gefördert wird, zunächst durch den Kühlwasserraum der Hilfsbrennkraftmaschine gefördert und dann erst in die einzelnen Zylinder der die Zylinder der Brennkraftmaschine umgebenden Wassermäntel. Von diesen wird das Kühlwasser zu der Kühlmittelpumpe zurückgefördert. Wird nun die Brennkraftmaschine selbst betrieben und wird dementsprechend das Kühlwasser soweit erwärmt, das es durch den Kühler 18 geleitet wird, wird es über eine Leitung an eine Stelle auf der Ausgangsseite der Kühlmittelpumpe zurückgefördert. D. h., während des normalen Betriebs der Brennkraftmaschine hat die Kühlmittelpumpe bei der Förderung des Kühlwassers durch den Kühler keine Funktion und die gesamte an die Kurbelwelle angeschlossene Hilfseinrichtung, bestehend aus Getriebe, Schwungrad, Hilfsbrennkraftmaschine und Kühlmittelpumpe kann sinnvollerweise abgeschaltet werden. Für eine Förderung des Kühlwassers beim Betrieb der Brennkraftmaschine ist also eine weitere nicht dargestellte Kühlwasserpumpe erforderlich.Such an internal combustion engine is known from FR-A-1 085 207. This document discloses an internal combustion engine, the one has flanged gearbox on the crankshaft, which via a Flywheel is connectable to an auxiliary engine. This is in turn connected to a coolant pump via a coupling. For preheating the cooling water of the internal combustion engine now operated the auxiliary engine and this drives the coolant pump on. Then the cooling water from the coolant pump is initially promoted by the cooling water room Auxiliary internal combustion engine conveyed and only then in the individual cylinders the water jacket surrounding the cylinders of the internal combustion engine. From these, the cooling water becomes the coolant pump promoted back. Now the internal combustion engine is operated itself and accordingly the cooling water is heated to the extent that it is passed through the cooler 18, it is via a line to a Pumped back on the outlet side of the coolant pump. That is, during normal operation of the internal combustion engine, the Coolant pump in the delivery of the cooling water through the radiator no function and the whole connected to the crankshaft Auxiliary device, consisting of gear, flywheel, auxiliary engine and the coolant pump can usefully be switched off will. For pumping the cooling water during operation the internal combustion engine is therefore a further cooling water pump, not shown required.
Bei der weiterhin bekannten DE-A-29 40 643 handelt es sich um eine Brennkraftmaschine, bei der das Öl der Brennkraftmaschine vorgeheizt werden kann. Hierbei handelt es sich um eine Vorrichtung, die insbesondere als externes System an die Brennkraftmaschine über Schnellkupplungen anschließbar ist oder aber durch die Brennkraftmaschine selbst oder einen zusätzlichen Elektromotor antreibbar ist. In jedem Fall handelt es sich aber um ein adaptives System, das zusätzlich an der Brennkraftmaschine angeschlossen ist und im eigentlichen Betrieb der Brennkraftmaschine keine Funktion hat.The still known DE-A-29 40 643 is a Internal combustion engine in which the oil of the internal combustion engine is preheated can be. This is a device that especially as an external system to the internal combustion engine Quick couplings can be connected or through the internal combustion engine itself or an additional electric motor can be driven. In any case, it is an adaptive system that is additionally connected to the internal combustion engine and actually Operation of the internal combustion engine has no function.
Der Erfindung liegt die Aufgabe zugrunde, diese gattungsgemäße Einrichtung derart weiterzubilden, daß mit einem möglichst geringen zusätzlichen Bauaufwand eine Erhitzung des Kühlwassers während des Stillstands der Brennkraftmaschine möglich ist.The invention has for its object this generic To further develop the device in such a way that the lowest possible additional construction effort while heating the cooling water the shutdown of the internal combustion engine is possible.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Kühlmittel
durch die während des Stillstandes der Brennkraftmaschine
antreibbare Kühlmittelpumpe durch den Kühlmittelkreislauf förderbar
ist. Dieser erfindungsgemäßen Ausgestaltung liegen mehrere Erkenntnisse
zugrunde. Zunächst wurde in Versuchen herausgefunden,
daß eine Erwärmung des Kühlwassers während des Stillstandes der
Brennkraftmaschine auf ca. 40°C eine gegenüber nicht erwärmten
Kühlwasser erheblich verbesserte Abgasqualität bewirkt, gleichzeitig
aber zusätzlich einen besseren Start der Brennkraftmaschine durch
ein besseres und schnelleres Zünden des Verbrennungsgemisches
ermöglicht und dadurch insgesamt ein schnelleres Hochfahren auf
den Betriebspunkt der Brennkraftmaschine erreichbar ist. Dies ist insbesondere
bei Gasmotoranlagen wichtig, die beispielsweise in einem
Blockheizkraftwerk eingesetzt sind und bei denen nach der Bedarfsanforderung
von elektrischer Energie oder Heizwärme diese möglichst
umgehend bereitgestellt werden muß. Dies erfordert ein schnelles
Hochfahren der den Generator antreibenden Brennkraftmaschine
auf einen genau vorgegebenen Betriebspunkt, da der Generator mit
einer exakt vorgegebenen Drehzahl angetrieben werden muß. Damit
ist ein längeres Warmlaufen der Brennkraftmaschine allein schon aus
der Anforderung an die umgehende Erzeugung von elektrischer Energie
ausgeschlossen. Hinzu kommen die strengen behördlichen Auflagen
an derartige Blockheizkraftwerke, die beispielsweise durch die
TA-Luft dargestellt sind. Bezüglich der erfindungsgemäßen Ausgestaltung
ist nun herausgefunden worden, daß gerade bei einer Vorheizung
des Kühlwassers auf ca. 40°C ein ausreichend schnelles
Hochfahren der Brennkraftmaschine bei Einhaltung aller behördlichen
Abgas- und Umweltbestimmungen möglich ist. Ein weiteres Aufheizen
des Kühlwassers auf höhere Temperaturen bringt hier keine nennenswerte
Verbesserung, während aber bei geringeren Kühlwassertemperaturen
als 40°C nur deutlich schlechtere Werte erreichbar sind. Von
dieser Erkenntnis ausgehend ist es der nächste Schritt der Erfindung
herauszufinden, daß das Kühlwasser durch den Betrieb der Kühlmittelpumpe
während des Stillstandes der Brennkraftmaschine auf eine
Temperatur von ca. 40°C erwärmt werden kann. Dabei äußert sich die
in die Kühlmittelpumpe hineingegebene Leistung durch Flüssigkeitsreibung
in einer Erwärmung des Kühlwassers. Zusätzlich ergibt sich
durch das Umpumpen der vorteilhafte Effekt, daß das gesamte System
gleichmäßig erwärmt wird. Durch diese erfindungsgemäße Ausbildung
wird ein zusätzlicher Heizstab mit einer Leistungsaufnahme
von ca. 3 KW eingespart, während der Betrieb der Kühlmittelpumpe
auch beim Stillstand der Brennkraftmaschine insbesondere bei Blockheizkraftwerken
mit Brennkraftmaschinenanlagen keinen zusätzlichen
Bauteilaufwand erfordert, sondern lediglich einer schaltungstechnischen
Änderung bedarf. Bei derartigen Brennkraftmaschinenanlagen
ist es leicht möglich, die Kühlmittelpumpe außerhalb der jeweiligen
Brennkraftmaschine anzuordnen und die Kühlmittelpumpe mit elektrischer
Energie anzutreiben. Dabei wird davon ausgegangen, daß als
Kühlmittelpumpe eine einzige Pumpe zum Einsatz kommt, wobei
diese Pumpe während des Betriebs der Brennkraftmaschine die Förderung
des Kühlwassers zu Kühlzwecken und während des Stillstandes
der Brennkraftmaschine - wie beschrieben - zu Heizzwecken vornimmt. This object is achieved in that the coolant
by the during the standstill of the internal combustion engine
drivable coolant pump conveyable through the coolant circuit
is. This embodiment of the invention has several findings
underlying. At first it was found out in experiments
that heating of the cooling water during the standstill of the
Internal combustion engine to about 40 ° C compared to not heated
Cooling water causes significantly improved exhaust gas quality, at the same time
but also a better start of the internal combustion engine
better and faster ignition of the combustion mixture
enables and thereby a faster start up overall
the operating point of the internal combustion engine can be reached. This is particularly so
important for gas engine systems, for example in one
Combined heat and power plants are used and where according to the requirement
of electrical energy or heat, if possible
must be provided immediately. This requires a quick one
Starting up the internal combustion engine driving the generator
to a precisely specified operating point, since the generator with
must be driven at a precisely predetermined speed. In order to
is a long warming up of the engine alone
the requirement for the immediate generation of electrical energy
locked out. Added to this are the strict official requirements
to such cogeneration plants, for example, by the
TA-Luft are shown. With regard to the configuration according to the invention
has now been found that just with a preheating
the cooling water to approx. 40 ° C a sufficiently fast one
Starting up the internal combustion engine while complying with all official requirements
Emission and environmental regulations is possible. Another heat up
of the cooling water to higher temperatures brings no noteworthy here
Improvement, but at lower cooling water temperatures
Only significantly worse values can be achieved than 40 ° C. From
Based on this knowledge, it is the next step of the invention
find out that the cooling water by operating the coolant pump
to a while the engine is at a standstill
Temperature of about 40 ° C can be heated. This expresses itself
power input into the coolant pump by fluid friction
in heating the cooling water. In addition there is
by pumping around the beneficial effect that the entire system
is heated evenly. Through this training according to the invention
becomes an additional heating element with a
In Weiterbildung der Erfindung ist die Kühlmittelpumpe in Abhängigkeit von der Kühlmitteltemperatur betreibbar. Dadurch kann mit einfachen Mitteln die vorgegebene Kühlmitteltemperatur beispielsweise in einem Bereich zwischen 38°C und 40°C eingeregelt werden, indem beispielsweise ein Temperatursensor in dem Kühlmittelkreislauf eingeschaltet ist, über den der Antrieb der Kühlmittelpumpe ein- und ausgeschaltet wird. Hierzu bietet sich insbesondere bei Einsatz der Brennkraftmaschine in Blockheizkraftwerken der zuvor genannte elektrische Antrieb der Kühlmittelpumpe an.In a further development of the invention, the coolant pump is dependent operable from the coolant temperature. This can be done with simple Average the specified coolant temperature, for example in a range between 38 ° C and 40 ° C can be adjusted by for example, a temperature sensor in the coolant circuit is switched on over which the drive of the coolant pump on and is turned off. This is particularly useful when using the Internal combustion engine in combined heat and power plants the aforementioned electrical drive of the coolant pump.
In Weiterbildung der Erfindung ist die Förderleistung der Kühlmittelpumpe in Abhängigkeit von der Kühlmitteltemperatur einstellbar. Dadurch kann mit einfachen Mitteln die vorgegebene Kühlmitteltemperatur beispielsweise von 40°C eingestellt werden, indem beispielsweise ein Temperatursensor in dem Kühlmittelkreislauf eingeschaltet ist, über den der Antrieb der Kühlmittelpumpe geregelt wird. Auch hierzu bietet sich insbesondere bei Einsatz der Brennkraftmaschine in Blockheizkraftwerken der zuvor genannte elektrische Antrieb der Kühlmittelpumpe an.The delivery capacity of the coolant pump is a further development of the invention adjustable depending on the coolant temperature. As a result, the specified coolant temperature can be achieved with simple means for example, set from 40 ° C, for example a temperature sensor in the coolant circuit is turned on is used to regulate the drive of the coolant pump. Also this is particularly useful when using the internal combustion engine in Combined heat and power plants the aforementioned electric drive Coolant pump on.
In Weiterbildung der Erfindung ist zumindest während des Stillstandes der Brennkraftmaschine eine Drossel in den Kühlmittel kreislauf einschaltbar. Die Drossel bewirkt durch den verengten Durchströmungsquerschnitt eine erhöhte Fließgeschwindigkeit des Kühlwassers, was sich letztendlich durch Flüssigkeitsreibung in einer Temperaturerhöhung des Kühlmittels ausdrückt.In a development of the invention is at least during the standstill the internal combustion engine a throttle in the coolant circuit switchable. The restriction results from the restricted flow area an increased flow rate of the cooling water, which ultimately results from fluid friction in an increase in temperature of the coolant.
In Weiterbildung der Erfindung weist die Drossel einen veränderlichen Drosselquerschnitt auf. Hierdurch kann eine Anpassung an die jeweils gegebenen Anforderungen bezüglich einer zusätzlichen Kühlmittelerwärmung durch Verändern des Drosselquerschnitts erfolgen. Hierbei ist in weiterer Ausgestaltung der Drosselquerschnitt in Abhängigkeit von der Kühlmitteltemperatur veränderbar. Durch diese Einrichtung kann im Zusammenwirken mit der Regelung der Kühlmittelpumpe ein günstiges Zusammenwirken dieser beider Bauelemente bezüglich einer Erwärmung des Kühlmittels gewährleistet sein.In a development of the invention, the throttle has a variable one Throttle cross section. This can make an adjustment to the given requirements regarding an additional Coolant heating by changing the throttle cross section respectively. In a further embodiment, the throttle cross section changeable depending on the coolant temperature. This facility can interact with the scheme the coolant pump a favorable interaction of these two components be guaranteed with regard to heating the coolant.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in der Figur dargestelltes Ausführungsbeispiel der Erfindung näher beschrieben ist.Further advantageous embodiments of the invention are the description of the drawing can be seen in the an embodiment shown in the figure the invention is described in more detail.
Die Figur zeigt einen erfindungsgemäß ausgestalteten Kühlmittelkreislauf einer Brennkraftmaschine, die insbesondere als Gasmotoranlage für Blockheizkraftwerke ausgebildet ist.The figure shows a coolant circuit designed according to the invention Internal combustion engine, in particular as a gas engine system for combined heat and power plants is trained.
Der Kühlmittelkreislauf weit eine außerhalb der Brennkraftmaschine 1 angeordnete
Kühlmittelpumpe 2 auf, die von einem Elektromotor 3 regelbar angetrieben
ist. Die Kühlmittelpumpe 2 fördert das Kühlmittel durch eine Verbindungsleitung,
in die ein flexibler Anschluß 4a eingebaut ist, in den Kühlmittelkreislauf
der Brennkraftmaschine 1, die ihrerseits einen Generator 5 antreibt.
Der Ausgang aus dem Kühlmittelkreislauf der Brennkraftmaschine ist wiederrum
mit einem flexiblem Anschluß 4b versehen, und im weiteren Verlauf der
motorexternen Kühlmittelleitung ist eine einstellbare und arretierbare Drossel 6
eingesetzt. Im weiteren Strömungsverlauf ist hinter der Drossel 6 eine Abzweigeleitung
vorgesehen, in die ein Entlüftungsventil 7 und ein Überdruckventil 8
eingeschaltet sind. Weiter gelangt das Kühlmittel durch den Hauptkreislauf in
einen Wärmetauscher 9, um von dort wieder in den Eingang der Kühlmittelpumpe
2 zu gelangen. Dabei ist zwischen dem Wärmetauscher 9 und der
Kühlmittelpumpe 2 eine weitere Abzweigleitung vorgesehen, in die ein Ausdehnungsgefäß
10 und ein weiteres Überdruckventil 11 eingeschaltet sind.The coolant circuit is arranged outside the internal combustion engine 1
Durch das erfindungsgemäße Betreiben der Kühlmittelpumpe 2 während des
Stillstandes der Brennkraftmaschine 1 wird das Kühlmittel auf ca. 40°C erhitzt.
Durch diese Vorwärmung bedingt ergibt sich ein besseres Startverhalten der
Brennkraftmaschine und die Brennkraftmaschine 1 kann bei geringen Abgasemissionswerten
schneller auf ihren Betriebspunkt hochgefahren werden.
Ein weiterer wesentlicher Vorteil ist eine deutliche Verringerung des Verschleißes
der Brennkraftmaschine.By operating the
Claims (6)
- An internal combustion engine with at least one cooling medium circuit, in which transmissible cooling medium circulates from a cooling medium pump (2) through at least the internal combustion engine (1) and a heat exchanger (9), which can be heated during the standstill of the internal combustion engine (1), whereby the cooling water can be moved around the cooling medium circuit by a cooling medium pump (2), which can be driven during the standstill of the internal combustion engine (1),
characterised in that the cooling medium pump (2) can be driven by an electric motor (3) and that the cooling medium pump (2) moves the cooling water for cooling purposes during operation of the internal combustion engine (1) - An internal combustion engine according to Claim 1,
characterised in that the cooling medium pump (2) can be operated in dependence upon the cooling medium temperature. - An internal combustion engine according to Claim 1 or 2,
characterised in that the cooling medium pump (2) can be adjusted in dependence upon the cooling medium temperature. - An internal combustion engine according to one of the Claims 1 to 3, characterised in that a throttle (6) can be connected in the cooling medium circuit.
- An internal combustion engine according to Claim 4, characterised in that the throttle (6) has a variable throttle cross section.
- An internal combustion engine according to one of the Claims 4 or 5, characterised in that the throttle cross section can be changed in dependence upon the cooling medium temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4344602 | 1993-12-24 | ||
| DE4344602A DE4344602A1 (en) | 1993-12-24 | 1993-12-24 | Internal combustion engine with a coolant circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0664381A1 EP0664381A1 (en) | 1995-07-26 |
| EP0664381B1 true EP0664381B1 (en) | 1998-09-09 |
Family
ID=6506314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94118644A Expired - Lifetime EP0664381B1 (en) | 1993-12-24 | 1994-11-26 | Internal combustion engine with cooling means circuit |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0664381B1 (en) |
| DE (2) | DE4344602A1 (en) |
| DK (1) | DK0664381T3 (en) |
| ES (1) | ES2120559T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916551A1 (en) * | 1999-04-13 | 2000-10-19 | Pierburg Ag | Coolant pump |
| CN104612877A (en) * | 2014-11-28 | 2015-05-13 | 中联重科股份有限公司渭南分公司 | Vehicle engine warming control equipment, system, method and engineering machine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1085207A (en) * | 1952-10-16 | 1955-01-28 | Device for starting internal combustion engines | |
| GB749023A (en) * | 1953-01-29 | 1956-05-16 | Thompson Prod Inc | Improvements in or relating to a combined heater and pump for fluids |
| GB834090A (en) * | 1957-09-27 | 1960-05-04 | Vickers Electrical Co Ltd | Improvements relating to cooling arrangements for internal combustion engines |
| DE2607343A1 (en) * | 1976-02-23 | 1977-08-25 | Moll Hans Heinrich | Drive system for lubricating oil pump and water cooling pump - in which each pump has own engine speed independent drive unit |
| DE2940643A1 (en) * | 1979-10-06 | 1981-04-16 | Klöckner-Humboldt-Deutz AG, 5000 Köln | FACILITIES FOR THE HEATING MACHINES |
| DE3005966A1 (en) * | 1980-02-16 | 1981-09-03 | Klöckner-Humboldt-Deutz AG, 5000 Köln | DEVICE FOR HEATING INDOOR AIR |
| DK147207C (en) * | 1981-10-29 | 1984-11-05 | Niels Thure Hallin | REFRIGERATOR ENGINE COOLING COOLING SYSTEM |
| DE3151472A1 (en) * | 1981-12-24 | 1983-07-21 | Klöckner-Humboldt-Deutz AG, 5000 Köln | DEVICE FOR HEATING A CONTROL CAB |
| DE3341097A1 (en) * | 1983-11-12 | 1985-05-23 | Volkswagenwerk Ag, 3180 Wolfsburg | Internal combustion engine for vehicles, in particular passenger vehicles |
-
1993
- 1993-12-24 DE DE4344602A patent/DE4344602A1/en not_active Withdrawn
-
1994
- 1994-11-26 DE DE59406882T patent/DE59406882D1/en not_active Expired - Fee Related
- 1994-11-26 ES ES94118644T patent/ES2120559T3/en not_active Expired - Lifetime
- 1994-11-26 EP EP94118644A patent/EP0664381B1/en not_active Expired - Lifetime
- 1994-11-26 DK DK94118644T patent/DK0664381T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0664381A1 (en) | 1995-07-26 |
| DE59406882D1 (en) | 1998-10-15 |
| DK0664381T3 (en) | 1999-06-07 |
| ES2120559T3 (en) | 1998-11-01 |
| DE4344602A1 (en) | 1995-06-29 |
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