EP0931208B1 - Verfahren und steuerung zur regelung des kühlkreislaufes eines fahrzeuges mittels einer thermisch geregelten wasserpumpe - Google Patents
Verfahren und steuerung zur regelung des kühlkreislaufes eines fahrzeuges mittels einer thermisch geregelten wasserpumpe Download PDFInfo
- Publication number
- EP0931208B1 EP0931208B1 EP97909371A EP97909371A EP0931208B1 EP 0931208 B1 EP0931208 B1 EP 0931208B1 EP 97909371 A EP97909371 A EP 97909371A EP 97909371 A EP97909371 A EP 97909371A EP 0931208 B1 EP0931208 B1 EP 0931208B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- retarder
- coolant
- speed
- engine
- 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
Links
Images
Classifications
-
- 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
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
-
- 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
- F01P2005/105—Using two or more 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
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
-
- 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
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/66—Vehicle speed
-
- 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
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/06—Retarder
-
- 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
- F01P7/161—Controlling of coolant flow the coolant being liquid by thermostatic control by bypassing 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
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
Definitions
- the invention relates to a method for adjusting the engine temperature by means of a cooling circuit and a device for adjusting the Engine temperature.
- cooling circuits comprising a coolant, preferably water with the appropriate anti-freeze additives. It flows through a certain amount of coolant per unit of time the engine to be cooled, absorbs the heat of the internal combustion engine and transports them to a cooler, for example a finned cooler, in the amount of heat absorbed and transported to the environment is delivered.
- the cooling capacity of such a system is in the essentially determined by the amount of coolant circulated.
- the coolant is circulated by means of a coolant pump. there the flow rate of the coolant pump determines the coolant flow through the Cooling circuit.
- Coolant pump generally depends on its speed.
- Conventional coolant pumps are in constant drive connection the engine, so they work depending on the engine speed.
- this method for cooling an engine, especially one Internal combustion engine is that high pumping power even in cases in to whom this is not required. For example summer and winter will always be the same with such an arrangement Amount of coolant pumped through the cooling circuit. This is what happens an unnecessary power consumption on the part of the engine, which in certain operating situations to unnecessarily high fuel consumption leads.
- This problem becomes particularly serious when in the cooling circuit a retarder is inserted, its working medium at the same time Coolant for the engine is. Then the must for safe heat dissipation Flow rate of the coolant pump should be designed so that even connected retarder the heat can be dissipated. This requires Pumps with very high performance.
- a separate fluid circuit e.g. according to DE-A-44 47 166, Fig. 13
- the retarder is in the To integrate the water circuit of the engine cooler (DE-A-44 47 166, Fig. 10-12, column 4).
- JP-A-63097 823 are the temperature setpoints in the cooling circuit to be determined depending on the load.
- this object is achieved by a method according to the Claim 1 and a device according to claim 16 solved.
- the coolant temperature in the Cooling circuit by means of a speed-controlled coolant pump is set that an optimal engine temperature value as quickly as possible reached and a maximum value is never exceeded.
- the Engine temperature is continuously determined, for example in sampling intervals, the can range from several seconds to milliseconds.
- the predetermined maximum temperature value for the motor in further training depending on the current Engine power specified.
- the cooling circuit always close to the temperature limit of the engine drive, which is particularly fuel-efficient because the performance of the Coolant pump is then optimally adjusted.
- Cooling circuits include a retarder, wherein the coolant the Working medium of the retarder itself.
- the retarder in Cooling circuit can be switched on and off, for example by means of a Changeover valve that bypasses the coolant past the retarder leads when this is not working.
- a particularly fuel-efficient embodiment provides that in addition to the speed-controlled coolant pump at least one more Coolant pump is provided. This can either depending on engine speed, driving speed or operated depending on the retarder speed.
- the speed-controlled coolant pump can be designed so that the Provides basic cooling load in the cooling circuit and only for special ones Loads that the additional coolant pump is switched on, for example at Ascent.
- Cooling circuits which include a retarder, as particularly advantageous.
- the speed-controlled coolant pump in its Performance is designed so that it is for everyone Operating situation of the engine with or not in operation the retarder is switched off sufficient cooling of the motor geußraut.
- the at least one further coolant pump when the retarder is operated is switched on, so that the additional heat generated in the retarder can be safely removed, d. H. with the help of this further coolant pump in combination with the speed-controlled coolant pump sufficient cooling of the motor is guaranteed.
- the further coolant pump depending on the engine speed, operated depending on retarder speed or depending on vehicle speed is measured in its performance so that it for a sufficient cooling of the engine required basic power in all Provides operating states.
- the coolant pump is then only operated when the retarder is switched on exactly in such a way that the maximum of the previously mentioned maximum on the motor Engine temperature is not exceeded.
- a coolant Water with the appropriate antifreeze.
- the retarder can be a primary retarder, i.e. a retarder whose Speed is dependent on the engine speed, or else a secondary retarder, whose speed is dependent on the driving speed. It goes without saying it is possible that the coolant at the same time as working medium of the retarder serves.
- the invention is also intended to include the case that the coolant of the Motors is not the working tool of the retarder, but only for example, is passed through a heat exchanger and from there the Heat, which is generated in the retarder during braking, absorbs.
- the invention provides a device for adjusting the Motor temperature available.
- the cooling circuit of the device according to the invention comprises in one Development of the invention in addition to the retarder, a changeover valve.
- FIG. 1 is a drive unit consisting of a motor 1 and a Cooling circuit 3 shown.
- the cooling circuit 3 comprises a cooler 5, one Coolant pump 7, which is designed as a speed-controlled coolant pump, and a surge tank 9, the pump suction side always for one sufficient overpressure. Furthermore, one is in the cooling circuit Switchover valve 11 and a retarder 13 are provided.
- the invention but is in no way limited to only those embodiments in which a retarder is arranged in the coolant circuit. The invention is also applicable when only engine cooling by means of a cooling circuit and a speed-controlled coolant pump is provided.
- a bypass line 40 leads past the cooler and branches at point 42.
- a changeover valve 44 is arranged, which is a 3/2-way valve can be designed.
- the 3/2-way valve has the function of Control coolant flow so that it either through the radiator or can be led past the cooler through the bypass line 40.
- the 3/2-way valve controls the operating phase with high heat dissipation Some or most of the cooling flow to the cooler 5.
- Lower in phase The 3/2-way changeover valve 44 controls heat dissipation via the coolant the bypass line to motor 1 or to pump 7.
- the 3/2-way valve can be designed as an expansion valve or as an electrical or pneumatic continuously regulating valve.
- the cooler can be supported by means of a fan 15.
- the engine 1 has in the present case as a means for determining the temperature Temperature sensor 20 on.
- a control device 24 supplied, which represents the current engine temperature.
- the control device 24 a variety of temperature signals and to determine the actual temperature value, which as Reference variable in the present control loop, an averaging over a Large number of temperature signals.
- the control device 24 itself is a maximum temperature value for the motor as a setpoint for the Control loop filed.
- this maximum temperature set point is a single value for all operating states of the engine.
- a Value that follows the load state of the motor following the pump speed control act directly i.e. the pump control is not just that Temperature setpoint dependent.
- the detection of the load status can Torque sensor or the control unit of the engine. It different control algorithms are now conceivable. So it can speed-controlled coolant pump 7 with a certain constant Speed are operated and the control only intervenes when the Motor temperature exceeds the specified maximum temperature value. It is then adjusted, i. H. the delivery rate increases.
- the amount of coolant caused by the engine is always promoted so that the engine at the maximum permissible coolant temperature is driven, d. H. the coolant pump will in their speed both with deviations to higher as well as lower temperatures than the specified target temperature using the Regulating device 24 regulated. This ensures that in the cooling circuit only circulates the exact amount that is required for Reaching the engine setpoint temperature is required. This is it Particularly advantageous if the coolant pump 7 is speed-controlled means its delivery rate directly from the speed at which it rotates depends.
- FIG. 2 shows a further embodiment of the invention, wherein in the cooling circuit in addition to the speed-controlled pump 7 another Pump 30 is provided.
- the pump 30 is in this embodiment the switching valve 11 for the bypass 26 is arranged.
- the same reference numerals are again chosen in FIG. 2.
- the advantage of the training shown in FIG. 2 is that the speed-controlled pump 7 depending on the control device 24 the motor temperature recorded via the sensor 20 is regulated in their delivery rate can be designed very low, because in the cooling circuit a further pump 30 is provided, which in the present Embodiment is operated depending on the vehicle speed and for provides a basic delivery rate in the cooling circuit.
- the pump 30 is like this dimensioned so that when the retarder is not operated, i. H. in that condition, in which the coolant passes the retarder through the bypass line 26 is sufficient to provide the pump power required for engine cooling to provide.
- the control will respond and the control device Start speed-controlled pump 7, which then exactly with one is operated such a speed that an additional flow rate for Is provided to undue heating of the engine prevent.
- the control device in turn operates as in FIG. 1 described, d. H. in the event of deviations from a specified one Motor temperature setpoint is the speed of pump 7 as long set accordingly until this specified setpoint motor temperature is reached.
- the regulation allows the coolant circuit Always drive straight so that the engine is close to the maximum permissible temperature. As already shown above, this has one considerable fuel savings.
- a third embodiment shown in Fig. 3 are again for same aggregates the same reference numerals as in Figs. 1 and 2 used.
- the further pump 30 is now behind the changeover valve 11 arranged immediately before the retarder 13.
- the base load for The speed-controlled pump 7 now takes over coolant delivery again depending on the engine temperature using the Control device 24 controlled and in such a way that depending on predetermined target value and the deviation of the actual value from it speed-controlled pump is controlled.
- the speed-controlled pump can be interpreted in their delivery rate very low, since they only the in Coolant circuit without any heat generated by the retarder must be removed. If the retarder is now switched on, the another pump 30 switched on and the higher required for cooling Delivery volume made available by this.
- Both according to the embodiment according to FIG. 2 and according to FIG. 3 can the control device additionally via a signal line 32 with the Switching valve 11 may be connected in order to be supplied with a status signal to get information about whether the coolant through the Retarder or bypassed by this.
- the To activate control by means of the control device 24 only when on a signal is present on the signal line 32, which indicates the coolant is passed through the retarder and serves as the working medium there.
- the speed-controlled pumps 7 can be driven by means of a Electric motor, which in turn is connected to the electrical circuit of the vehicle connected.
- Electric motors that are suitable are known to the person skilled in the art the prior art, see, for example, "Dubbel, Paperback for mechanical engineering, 18th edition, 1995, pages V18 - V51 known.
- coolant pumps be one or more of which are speed-controlled coolant pumps.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
In diesem Motorkühlkreislauf wird aufgrund der Regelung anhand von permanent erfaßten kritischen Bauteiltemperaturen (S.VI; Sp.2) eine vorbestimmte Motortemperatur unabhängig vom zu- und abschaltbaren Retarderbetrieb nicht überschritten.
Claims (19)
- Verfahren zur Einstellung der Motortemperatur mittels eines Kühlkreislaufes in dem ein Kühlmedium umläuft, umfassend wenigstens eine Kühlmittelpumpe, sowie einen Retarder, dessen Arbeitsmedium das Kühlmedium ist;
das Verfahren ist dadurch gekennzeichnet, daß
die Temperatur des Kühlmittels mittels mindestens einer drehzahlgeregelten Kühlmittelpumpe (7) in Abhängigkeit von der Motortemperatur derart eingestellt wird, daß ein vorherbestimmter maximaler Motortemperaturwert unabhängig vom Retarderbetriebszustand nicht überschritten wird, wobei der vorbestimmte Temperaturmaximalwert ständig der aktuellen Motorleistung angepaßt wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Motortemperatur ständig ermittelt wird.
- Verfahren gemäß einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Retarder zu- und abschaltbar ist.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Kühlmittelkreislauf neben der mindestens einen drehzahlgeregelten Kühlmittelpumpe (7) mindestens eine weitere Kühlmittelpumpe (30) umfaßt.
- Verfahren gemäß Anspruch 4, dadurch gekennzeichnet, daß die mindestens eine weitere Kühlmittelpumpe (30) motordrehzahlabhängig betrieben wird.
- Verfahren gemäß Anspruch 4, dadurch gekennzeichnet, daß die mindestens eine weitere Kühlmittelpumpe (30) fahrgeschwindigkeitsabhängig betrieben wird.
- Verfahren gemäß Anspruch 4, dadurch gekennzeichnet, daß die mindestens eine weitere Kühlmittelpumpe (30) retarderdrehzahlabhängig betrieben wird.
- Verfahren gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die drehzahlgeregelte Kühlmittelpumpe (7) in ihrem Leistungsvermögen derart ausgelegt ist, daß sie eine ausreichende Kühlung des Motors bei abgeschaltetem Retarder gewährleistet.
- Verfahren nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß die mindestens eine weitere Kühimittelpumpe (30) bei zugeschaltetem Retarder zugeschaltet wird, so daß eine ausreichende Kühlung des Motors in diesem Zustand gewährleistet wird.
- Verfahren nach Anspruch 4 und einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, daß die drehzahlgeregelte Kühlmittelpumpe (7) nur bei zugeschaltetem Retarder betrieben wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß
die mindestens eine weitere Kühlmittelpumpe (30) ständig betrieben wird und in ihrem Leistungsvermögen so bemessen ist, daß sie eine ausreichende Kühlung des Motors gewährleistet. - Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das Kühlmedium Wasser bw. ein Wassergemisch ist.
- Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß der Retarder (13) ein Primärretarder ist
- Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß der Retarder (13) ein Sekundärretarder ist.
- Vorrichtung zum Einstellen der Motortemperatur mit
Mitteln zur Bestimmung der Motortemperatur;
einem Kühlkreislauf mit mindestens einer Kühimittelpumpe zur Einstellung der Motortemperatur, wobei diese als drehzahlgeregelte Kühlmittelpumpe ausgelegt ist, deren Fördermenge von deren Drehzahl abhängt und der Kühlkreislauf des weiteren einen Retarder (13) umfasst, dessen Arbeitsmedium das Kühlmedium des Kühlkreislaufs ist,
dadurch gekennzeichnet, daß
eine Regelvorrichtung zur Regelung der Fördermenge der mindestens einen Kühlmittelpumpe in Abhängigkeit von der Motortemperatur vorgesehen ist, derart, daß unabhängig vom Retarderbetriebszustand ein vorbestimmter maximaler, ständig der aktuellen Motorleistung angepaßter Motortemperaturwert nicht überschritten wird. - Vorrichtung gemäß Anspruch 15, dadurch gekennzeichnet, daß
der Kühlkreislauf des weiteren ein Umschaltventil (11) umfasst. - Vorrichtung gemäß einem der Ansprüche 15 bis 16, dadurch gekennzeichnet, daß die Vorrichtung des weiteren eine Umschaltventilansteuervorrichtung umfasst.
- Vorrichtung gemäß einem der Ansprüche 15 bis 17, dadurch gekennzeichnet, daß die Vorrichtung des weiteren eine Ansteuervorrichtung für mindestens eine weitere Pumpe umfaßt.
- Vorrichtung gemäß einem der Ansprüche 15 bis 18, dadurch gekennzeichnet, daß der Kühtkreislauf eine Bypassleitung, die am Kühler vorbeiführt, umfaßt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996141558 DE19641558A1 (de) | 1996-10-09 | 1996-10-09 | Verfahren und Steuerung zur Regelung des Kühlkreislaufes eines Fahrzeuges mittels einer thermisch geregelten Wasserpumpe |
DE19641558 | 1996-10-09 | ||
PCT/EP1997/005545 WO1998015726A1 (de) | 1996-10-09 | 1997-10-08 | Verfahren und steuerung zur regelung des kühlkreislaufes eines fahrzeuges mittels einer thermisch geregelten wasserpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0931208A1 EP0931208A1 (de) | 1999-07-28 |
EP0931208B1 true EP0931208B1 (de) | 2003-03-12 |
Family
ID=7808239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97909371A Expired - Lifetime EP0931208B1 (de) | 1996-10-09 | 1997-10-08 | Verfahren und steuerung zur regelung des kühlkreislaufes eines fahrzeuges mittels einer thermisch geregelten wasserpumpe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0931208B1 (de) |
DE (2) | DE19641558A1 (de) |
WO (1) | WO1998015726A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818030C2 (de) * | 1998-04-22 | 2003-12-18 | Schatz Thermo System Gmbh | Verfahren und Vorrichtung zum Betreiben eines Kühlmittelkreises einer Brennkraftmaschine |
DE19848544C1 (de) * | 1998-10-22 | 2000-06-21 | Voith Turbo Kg | Verfahren und Vorrichtung zur Erhöhung der Bremsmomentenausnutzung eines hydrodynamischen Retarders in einem Kraftfahrzeug |
DE19951735A1 (de) | 1999-10-27 | 2001-05-17 | Zahnradfabrik Friedrichshafen | Retardersystem |
DE10023519A1 (de) | 2000-05-13 | 2002-01-03 | Zahnradfabrik Friedrichshafen | Kühlsystem für Fahrzeuge |
DE102004018227A1 (de) * | 2004-04-15 | 2005-11-17 | Zf Friedrichshafen Ag | Kühlsystem |
DE102005013075A1 (de) * | 2005-03-18 | 2006-09-21 | Voith Turbo Gmbh & Co. Kg | Kühlkreislauf mit einer hydrodynamischen Bremse |
US8131431B2 (en) | 2007-01-23 | 2012-03-06 | Volvo Lastvagnar Ab | Method for controlling cooling of an auxiliary brake |
DE102011116933A1 (de) | 2011-10-26 | 2013-05-02 | Man Truck & Bus Ag | Kühlkreislauf für eine flüssigkeitsgekühlteBrennkraftmaschine |
SE538626C2 (sv) * | 2013-10-24 | 2016-10-04 | Scania Cv Ab | Kylsystem i ett fordon |
CN105799493A (zh) * | 2014-12-29 | 2016-07-27 | 上海大郡动力控制技术有限公司 | 纯电动汽车水泵的控制方法 |
CN110805487B (zh) * | 2019-01-24 | 2020-10-27 | 长城汽车股份有限公司 | 一种发动机电子水泵的控制方法和*** |
SE543280C2 (en) | 2019-03-08 | 2020-11-10 | Scania Cv Ab | A method for controlling a vehicle in association with a descent, a powertrain, a vehicle, a computer program and a computer-readable medium |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6913276A (de) * | 1968-09-17 | 1970-03-19 | ||
FR2384106A1 (fr) * | 1977-03-16 | 1978-10-13 | Sev Marchal | Dispositif de refroidissement pour moteur a combustion interne |
DE3024209A1 (de) * | 1979-07-02 | 1981-01-22 | Guenter Dr Rinnerthaler | Fluessigkeitskuehlung fuer verbrennungsmotoren |
US4434749A (en) * | 1981-03-25 | 1984-03-06 | Toyo Kogyo Co., Ltd. | Cooling system for liquid-cooled internal combustion engines |
JPH0623539B2 (ja) * | 1985-05-20 | 1994-03-30 | 本田技研工業株式会社 | 車両用エンジン冷却装置 |
DE3738412A1 (de) * | 1987-11-12 | 1989-05-24 | Bosch Gmbh Robert | Vorrichtung und verfahren zur motorkuehlung |
DE3810174C2 (de) * | 1988-03-25 | 1996-09-19 | Hella Kg Hueck & Co | Einrichtung zur Regelung der Kühlmitteltemperatur einer Brennkraftmaschine, insbesondere in Kraftfahrzeugen |
JPH0417715A (ja) * | 1990-05-07 | 1992-01-22 | Nippondenso Co Ltd | 内燃機関の冷却装置 |
DE4102929A1 (de) * | 1991-01-31 | 1992-08-06 | Man Nutzfahrzeuge Ag | Kraftfahrzeug mit einer einrichtung zur bremsenergierueckgewinnung |
SE501444C2 (sv) * | 1993-07-01 | 1995-02-20 | Saab Scania Ab | Kylsystem för ett med retarder utrustat fordon |
DE9419818U1 (de) * | 1994-02-09 | 1995-03-16 | Lübeck, Tino, 44866 Bochum | Regelbare elektrische Wasserpumpe zur Kühlung von Verbrennungskraftmaschinen |
DE4445024A1 (de) * | 1994-12-16 | 1995-06-08 | Voith Turbo Kg | Antriebseinheit |
DE4446288A1 (de) * | 1994-12-23 | 1995-06-29 | Voith Turbo Kg | Antriebseinheit mit einer Brennkraftmaschine und einem hydrodynamischen Retarder |
DE4447166A1 (de) * | 1994-12-30 | 1995-06-08 | Voith Turbo Kg | Bremsanlage mit einem hydrodynamischen Retarder, insbesondere für ein Kraftfahrzeug |
-
1996
- 1996-10-09 DE DE1996141558 patent/DE19641558A1/de not_active Withdrawn
-
1997
- 1997-10-08 WO PCT/EP1997/005545 patent/WO1998015726A1/de active IP Right Grant
- 1997-10-08 EP EP97909371A patent/EP0931208B1/de not_active Expired - Lifetime
- 1997-10-08 DE DE59709520T patent/DE59709520D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0931208A1 (de) | 1999-07-28 |
WO1998015726A1 (de) | 1998-04-16 |
DE19641558A1 (de) | 1998-04-16 |
DE59709520D1 (de) | 2003-04-17 |
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