EP1529936A1 - Système de refroidissement pour un moteur à combustion interne d'un véhicule avec une pompe à eau désactivable - Google Patents

Système de refroidissement pour un moteur à combustion interne d'un véhicule avec une pompe à eau désactivable Download PDF

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Publication number
EP1529936A1
EP1529936A1 EP04023547A EP04023547A EP1529936A1 EP 1529936 A1 EP1529936 A1 EP 1529936A1 EP 04023547 A EP04023547 A EP 04023547A EP 04023547 A EP04023547 A EP 04023547A EP 1529936 A1 EP1529936 A1 EP 1529936A1
Authority
EP
European Patent Office
Prior art keywords
water pump
internal combustion
combustion engine
cooling system
engine
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.)
Granted
Application number
EP04023547A
Other languages
German (de)
English (en)
Other versions
EP1529936B1 (fr
Inventor
Heinz Lemberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
PSA Automobiles SA
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1529936A1 publication Critical patent/EP1529936A1/fr
Application granted granted Critical
Publication of EP1529936B1 publication Critical patent/EP1529936B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • 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
    • F01P2025/08—Temperature
    • 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
    • F01P2025/08—Temperature
    • F01P2025/12—Cabin temperature
    • 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
    • F01P2025/08—Temperature
    • F01P2025/13—Ambient temperature
    • 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
    • F01P2025/62—Load
    • 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
    • F01P2025/64—Number of revolutions
    • 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
    • F01P2031/00—Fail safe
    • 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

Definitions

  • the present invention relates to a cooling system for an internal combustion engine a vehicle according to the features of claim 1.
  • the water pump is mechanically via a V-belt driven by the engine.
  • the water pump thus runs during engine operation constantly with.
  • the water pump can be dispensed with.
  • From DE 100 23 508 A1 is a cooling system with a shut-off water pump known, during the operation of the internal combustion engine, the load condition of the engine and the operating temperature of the internal combustion engine be monitored.
  • a cooling system with a shut-off water pump is also from the DE 40 32 701 A1.
  • the object of the invention is to provide a cooling system for an internal combustion engine a shut-off water pump to create a respect of energy consumption of the internal combustion engine, the life of the internal combustion engine and the reliability has improved shutdown logic.
  • the water pump only becomes switched off when the at least one thermal condition parameter and the Load state and the operating state of the passenger compartment heating and the time parameters make the switching off of the water pump permissible and if the error memory is error-free.
  • the thermal condition parameter and the load condition and operating condition of the passenger compartment heater and the time parameter let a shutdown of the water pump appear permissible is for each of these "queries” each set a “evaluation logic", which will be explained in more detail later.
  • the water pump can be electrically driven. Preferably, however, is one provided mechanically driven by the internal combustion engine water pump.
  • the Water pump can mechanically from the engine via a friction gear be driven.
  • the friction wheel drive is mechanically biased.
  • the water pump By acting on the friction wheel actuator, the water pump be switched off.
  • a mechanical spring may be provided, which at a Power failure, i. if the actuator is de-energized, the friction wheel drive "closes". In this way, a "fail-safe function" can be displayed in a simple manner, the at a fault ensures the drive of the water pump.
  • a thermal state parameter the engine temperature is and that as a necessary condition considered to be admissible for switching off the water pump, that the engine temperature is less than a predetermined value.
  • the instantaneous coolant temperature can be interrogated with each engine start which corresponds approximately to the engine temperature.
  • the engine temperature can also be through separate sensors or through Maps are determined. Is the engine temperature or the coolant temperature at engine start smaller than a predetermined value, the water pump should be switched off be, since in this case, a cooling of the engine is not required and Energy can be saved by switching off the water pump. At higher Engine or coolant temperature, however, there is no more savings, so that when exceeding a predetermined value for the engine or coolant temperature the water pump should remain switched on.
  • the temperature of the Internal combustion engine sucked air to be monitored As another thermal condition parameter, the temperature of the Internal combustion engine sucked air to be monitored. As more necessary Condition for the permissibility of switching off the water pump can be considered be that the temperature of the intake air from the engine is less than a predetermined value. At an intake air temperature or at a Ambient air temperature that is greater than a predetermined value, the Water pump be switched on when starting the engine, if no savings more available. If the temperature is below the engine start, however the predetermined value, the water pump should remain switched off.
  • the engine temperature and the intake air temperature may be in the control logic by an AND link to a "start operating criterion" or - in general spoken - be summarized to a "thermal condition criterion".
  • the thermal condition criterion only indicates a shutdown of the Water pump when the engine temperature or the coolant temperature and at the same time the intake air temperature is less than the respectively predetermined Temperature values are. In other words, as a necessary condition for the permissibility of switching off the water pump, that the engine or coolant temperature is less than the predetermined value and that in addition the intake air temperature is less than the predetermined value.
  • the water pump For the assessment of the permissibility of switching off the water pump is called further necessary condition of the operating state of the passenger compartment heating supervised.
  • the water pump When assessing whether a shutdown during the starting phase of the engine the water pump is allowed or not, plays for the passenger compartment requested heating power a role.
  • For reliable defrosting of the windscreen or to ensure adequate heating comfort may be required be that the water pump already switched on in the starting phase of the engine becomes.
  • the water pump may only be turned off when the driver requested for the passenger compartment heating power is less than a predetermined value is.
  • the "operating state" of the passenger compartment heating for example, based be monitored by the driver set passenger compartment target temperature.
  • the set Setpoint temperature is less than a predetermined value or that the heating power, the setpoint temperature and the set airflow depends, is smaller than a predetermined value.
  • the load condition of the Internal combustion engine monitored.
  • the load state of the internal combustion engine can based on a load state parameter or on several load state parameters be monitored. It can be provided that as a necessary Prerequisite for the admissibility of switching off the water pump in the starting phase of the internal combustion engine is considered that at least one load state parameter is less than a predetermined value.
  • the load condition Representing signals can, for example, the vehicle speed and / or the speed of the internal combustion engine and / or the Internal combustion engine supplied fuel quantity or the internal combustion engine supplied fuel mass flow can be considered.
  • the load condition of the engine does not exceed a predetermined load condition.
  • the vehicle speed, the engine speed and the fuel mass flow For example, they can be linked together by an OR operation be linked. If the vehicle speed is less than a predetermined Value is or the engine speed is less than a predetermined value or the Internal combustion engine supplied fuel mass flow less than a predetermined Value, this is considered a necessary load condition criterion for shutting off the Water pump viewed.
  • a time counter provided be, during the operation of the internal combustion engine, the duration measures while the water pump is switched off.
  • the time measured by the time counter is less than a predetermined value. It can be provided that the water pump for a predetermined period of time should remain switched off after a cold start of the engine.
  • a necessary The prerequisite for switching off the water pump is that the measured Time is less than a predetermined period of time.
  • the time counter at a shutdown and a subsequent restart of the internal combustion engine only to a starting value, e.g. Reset "zero seconds" if the Water pump switched on before the last shutdown of the internal combustion engine was.
  • a starting value e.g. Reset "zero seconds” if the Water pump switched on before the last shutdown of the internal combustion engine was.
  • the "time routine" runs with each engine start so that the Counting time counter on various repeat starts and that until the Water pump is switched on and the internal combustion engine with a few seconds Idling speed or a higher speed has run. In a subsequent Restart the timer is then reset.
  • Modern vehicles have onboard diagnostic electronics (OBD).
  • OOB onboard diagnostic electronics
  • Onboard diagnostic electronics In the Onboard diagnostic electronics become various error or fault conditions of the vehicle or individual vehicle components stored. From the one in a vehicle monitored "fault states", individual states are relevant for the cooling circuit, other fault conditions are the function of the cooling circuit irrelevant.
  • One Switching off the water pump is only considered permissible if none for the cooling circuit relevant error states stored in the error memory are. If, for example, it is detected that a sensor for sensing the engine or Cooling water temperature is defective, this is stored in the fault memory.
  • the "shutdown logic" for the water pump is then bridged, with the result that the water pump runs from the start of the engine, i. that she is not switched off. It makes sense to all parameters which have a negative influence on the function of the engine can when the water pump is switched off.
  • the water pump only then is switched off when all considered necessary for shutdown Conditions exist, i. if the at least one thermal condition parameter, the load state of the internal combustion engine, the operating state of Passenger compartment heating, the time parameter and the fault memory "show” that shutdown of the water pump is allowed. If only one of these "test criteria" is not in order, remains or is the water pump for safety reasons switched on.
  • FIGURE 1 shows an embodiment of a circuit logic of a Cooling system according to the invention.
  • FIG. 1 schematically shows a logic diagram for switching off a water pump 1, which can be driven by an internal combustion engine 2 via a friction gear 3. Further is a control unit 4 is provided which drives the Reibradgetriebene 3.
  • the Friction gear 3 is designed so that in the de-energized state of the control unit. 4 the internal combustion engine 2 via the friction gear 3, the water pump 1 drives. By appropriate control of the friction gear 3 by the control unit. 4 the drive of the water pump 1 can be switched off.
  • the engine temperature T MOT and the temperature of the intake air T A sucked by the internal combustion engine are monitored.
  • a necessary condition for the permissibility of switching off the water pump 1 is that the engine temperature T MOT is less than 80 ° C and that the intake air temperature T A is less than 30 ° C.
  • the engine temperature and the intake air temperature T A form inputs 10, 11 of an AND operation 12.
  • the operating state of the passenger compartment heater is checked. For example, it may be provided that switching off the water pump only is then considered admissible if requested for the passenger compartment Heating power is less than a predetermined value or if the heater is not turned on is what is indicated schematically here by a non-member 13, which forms another input of the AND gate 12.
  • function block 7 the vehicle speed, the engine speed and monitors the instantaneous fuel consumption of the engine. If the Vehicle speed is less than 80 km per hour or if the Engine speed is less than 4000 1 / min or fuel consumption is less than one is given value, an OR gate 14 provides a logical "1", which is a another input 15 of the AND gate 12 is supplied.
  • the time duration is measured by means of a time counter, while the water pump 1 is switched off during operation of the internal combustion engine.
  • the time counter is reset to zero.
  • the timer begins to run.
  • the Function block 8 is a logical "1" to an input 16 of the And-gate 12, which switching off the water pump allowed.
  • the function block 8 is a logical zero, so that the water pump is switched on automatically.
  • function block 9 is monitored whether at any time one for the cooling system relevant fault condition has been present or present. Only if not for the Cooling system relevant fault condition has been present or present, delivers the function block 9 a logical "1" to the AND gate 12.
  • the "No-relevant-error-query" is indicated here schematically by a negation element 18.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP20040023547 2003-11-03 2004-10-02 Système de refroidissement pour un moteur à combustion interne d'un véhicule avec une pompe à eau désactivable Active EP1529936B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10351148 2003-11-03
DE2003151148 DE10351148A1 (de) 2003-11-03 2003-11-03 Kühlanlage für einen Verbrennungsmotor eines Fahrzeugs mit einer abschaltbaren Wasserpumpe

Publications (2)

Publication Number Publication Date
EP1529936A1 true EP1529936A1 (fr) 2005-05-11
EP1529936B1 EP1529936B1 (fr) 2012-12-05

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EP20040023547 Active EP1529936B1 (fr) 2003-11-03 2004-10-02 Système de refroidissement pour un moteur à combustion interne d'un véhicule avec une pompe à eau désactivable

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EP (1) EP1529936B1 (fr)
DE (1) DE10351148A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017188A1 (fr) * 2011-07-29 2013-02-07 Audi Ag Circuit de fluide de refroidissement pour un moteur à combustion interne et procédé pour faire fonctionner un circuit de fluide de refroidissement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037062A1 (de) * 2008-08-08 2010-02-11 Bayerische Motoren Werke Aktiengesellschaft Kühleinrichtung für eine Kraftfahrzeug-Brennkraftmaschine und Verfahren zum Betreiben derselben
DE102011108203A1 (de) 2011-07-20 2012-05-31 Daimler Ag Diagnoseverfahren für eine schaltbare Wasserpumpe
DE102015011244B4 (de) * 2015-08-27 2022-04-28 Audi Ag Kraftfahrzeug mit einem Kühlmittelkreislauf

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024209A1 (de) * 1979-07-02 1981-01-22 Guenter Dr Rinnerthaler Fluessigkeitskuehlung fuer verbrennungsmotoren
EP0323210A2 (fr) * 1987-12-28 1989-07-05 Honda Giken Kogyo Kabushiki Kaisha Système de commande de refroidissement
EP1046798A2 (fr) * 1999-04-22 2000-10-25 TCG UNITECH Aktiengesellschaft Système de refroidissement pour un moteur à combustion interne
DE10248552A1 (de) * 2002-10-18 2004-04-29 Bayerische Motoren Werke Ag Kühlkreislauf für einen Verbrennungsmotor mit einer abschaltbaren Wasserpumpe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032701A1 (de) * 1990-10-15 1992-06-25 Schatz Oskar Verfahren zur beeinflussung der betriebstemperatur eines verbrennungsmotors der kolbenbauart und motor zur durchfuehrung des verfahrens
DE10023508B4 (de) * 2000-05-13 2005-09-22 Audi Ag Kühlanlage eines flüssigkeitsgekühlten Verbrennungsmotors
EP1308609B1 (fr) * 2001-10-31 2005-01-26 Visteon Global Technologies, Inc. Procédé pour refroidir un moteur à combustion interne
DE10154091A1 (de) * 2001-11-02 2003-05-15 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zur Regelung eines Kühlsystems einer Verbrennungskraftmaschine
DE10163943A1 (de) * 2001-12-22 2003-07-03 Bosch Gmbh Robert Verfahren zur Ansteuerung von elektrisch betätigbaren Komponenten eines Kühlsystems, Computerprogramm, Steuergerät, Kühlsystem und Brennkraftmaschine
DE10210303B4 (de) * 2002-03-08 2007-05-03 Robert Bosch Gmbh Kühlkreislauf für einen Verbrennungsmotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3024209A1 (de) * 1979-07-02 1981-01-22 Guenter Dr Rinnerthaler Fluessigkeitskuehlung fuer verbrennungsmotoren
EP0323210A2 (fr) * 1987-12-28 1989-07-05 Honda Giken Kogyo Kabushiki Kaisha Système de commande de refroidissement
EP1046798A2 (fr) * 1999-04-22 2000-10-25 TCG UNITECH Aktiengesellschaft Système de refroidissement pour un moteur à combustion interne
DE10248552A1 (de) * 2002-10-18 2004-04-29 Bayerische Motoren Werke Ag Kühlkreislauf für einen Verbrennungsmotor mit einer abschaltbaren Wasserpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017188A1 (fr) * 2011-07-29 2013-02-07 Audi Ag Circuit de fluide de refroidissement pour un moteur à combustion interne et procédé pour faire fonctionner un circuit de fluide de refroidissement
US9903255B2 (en) 2011-07-29 2018-02-27 Audi Ag Coolant circuit for an internal combustion engine and method of operating a coolant circuit

Also Published As

Publication number Publication date
EP1529936B1 (fr) 2012-12-05
DE10351148A1 (de) 2005-06-02

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