EP2039903A2 - Procédé de détermination d'une capacité de puissance d'un système de refroidissement - Google Patents

Procédé de détermination d'une capacité de puissance d'un système de refroidissement Download PDF

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Publication number
EP2039903A2
EP2039903A2 EP08164380A EP08164380A EP2039903A2 EP 2039903 A2 EP2039903 A2 EP 2039903A2 EP 08164380 A EP08164380 A EP 08164380A EP 08164380 A EP08164380 A EP 08164380A EP 2039903 A2 EP2039903 A2 EP 2039903A2
Authority
EP
European Patent Office
Prior art keywords
cooling system
retarder
temperature
performance
temperature gradient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08164380A
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German (de)
English (en)
Other versions
EP2039903A3 (fr
Inventor
Peter Schmidtner
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP2039903A2 publication Critical patent/EP2039903A2/fr
Publication of EP2039903A3 publication Critical patent/EP2039903A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F01P11/16—Indicating devices; Other safety devices concerning coolant 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/06—Retarder

Definitions

  • the present invention relates to a method for determining a performance of a cooling system according to the preamble of claim 1.
  • Cooling systems are mounted in different sizes and with different capabilities in vehicles. At a cooling system of a vehicle several applications are connected, for. As engine, retarder and transmission whose control and regulation must be adjusted to the cooling system to prevent overheating of the cooling system. Thus, for each application, multiple controls must be present in order to adapt the applications to the current cooling system. For example, the same retarder with different back-regulation strategies must be provided to work with different-performing cooling systems. Additional controls or regulations for different application and cooling system variants mean additional costs.
  • the cooling liquid of a cooling cooling system of the retarder is heated up. How quickly the temperature drops after switching off the retarder depends on the efficiency of the cooling system. In a high performance cooling system, the temperature will drop quickly and in a lower performance cooling system, the temperature will drop more slowly. Therefore, an inventive method is proposed, in which by determining the temperature gradient of the coolant immediately after a braking of the retarder, the performance of the cooling system is determined. Temperature sensors for determining the temperature of the coolant are present in every cooling system as standard. Thus, the method is both simple and inexpensive, since no additional devices are needed to determine the performance of the cooling system. If the retarder control can determine the performance of the cooling system itself, several feedback control strategies can be preprogrammed in the control, and the control itself selects the feedback control strategy appropriate for the cooling performance of the cooling system.
  • the temperature gradient of the coolant is additionally determined during retarder braking, wherein the determination of the temperature gradient is performed before switching back on.
  • the performance of the cooling system is classified into predefined levels, such as good, medium and poor cooling systems.
  • the measured temperature gradients be stored. An average value is calculated from several consecutively determined and stored temperature gradients.
  • the engine and the engine brake are additionally monitored by already existing CAN signals and their influence on the temperature gradient of the coolant is taken into account.
  • the inventive method determines the performance of the cooling system, it is possible to save different variants of the retarder control. Instead, the retarder control is provided with several different feedback control strategies, the appropriate being selected by the result of the method according to the invention.
  • Fig. 1 and 2 diagrams are recorded in which a temperature T of a coolant of a cooling system of a vehicle is shown in relation to the time t. Until the time t_1 retarder braking is performed and the coolant of the cooling system has a temperature T_1. At time t_1, the retarder is switched off, the temperature T falling to T_2.
  • the temperature gradient dT / dt shows how quickly the cooling system cools down again when the retarder no longer supplies heat in the cooling system.
  • the temperature gradient dT / dt is measured and stored. If at least two temperature gradients dT / dt are stored, an average value of the temperature gradient dT / dt is calculated. The average value is used to determine the performance of the cooling system.
  • the Fig. 1 and 2 show an ideal situation in which neither engine nor engine brake from time t_1 are turned on, but the vehicle rolls out.
  • Fig. 1 the temperature gradient dT / dt is greater than that in Fig. 2 .
  • the controller may be provided with a plurality of alternative feedback control strategies selected depending on the determined performance of the refrigeration system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Regulating Braking Force (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
EP08164380A 2007-09-22 2008-09-16 Procédé de détermination d'une capacité de puissance d'un système de refroidissement Withdrawn EP2039903A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710045370 DE102007045370A1 (de) 2007-09-22 2007-09-22 Verfahren zur Bestimmung einer Leistungsfähigkeit eines Kühlsystems

Publications (2)

Publication Number Publication Date
EP2039903A2 true EP2039903A2 (fr) 2009-03-25
EP2039903A3 EP2039903A3 (fr) 2013-01-23

Family

ID=40243924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08164380A Withdrawn EP2039903A3 (fr) 2007-09-22 2008-09-16 Procédé de détermination d'une capacité de puissance d'un système de refroidissement

Country Status (3)

Country Link
EP (1) EP2039903A3 (fr)
BR (1) BRPI0804065A2 (fr)
DE (1) DE102007045370A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014063863A1 (fr) * 2012-10-25 2014-05-01 Voith Patent Gmbh Procédé de limitation du couple de freinage maximal d'un ralentisseur hydrodynamique ainsi que ralentisseur hydrodynamique pour véhicule automobile
CN106232959A (zh) * 2014-04-30 2016-12-14 卡明斯公司 优化发动机和交通工具传动系减速器集成的***和方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012220364A1 (de) 2012-11-08 2014-05-08 Zf Friedrichshafen Ag Verfahren zur Steuerung der Bremsleistung eines hydrodynamischen Retarders
DE102022214357B3 (de) 2022-12-23 2024-03-14 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Erkennen des Betriebs einer motorunabhängigen Zusatzheizung und zur Diagnose eines Kühlmitteltemperatursensors eines Kraftfahrzeugs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004040327A1 (de) 2004-08-20 2006-03-09 Volkswagen Ag Vorrichtung und Verfahren zur Überwachung der Leistungsfähigkeit eines Kühlsystems eines Fahrzeugs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2635640A1 (de) * 1975-08-11 1977-03-03 Wormald Int Waerme-detektoreinrichtung
JPS5717810A (en) * 1980-07-07 1982-01-29 Nippon Denso Co Ltd Alarm method and device for vehicle
ES2201363T3 (es) * 1997-04-23 2004-03-16 VOITH TURBO GMBH & CO. KG Procedimiento y dispositivo para el maximo aprovechamiento del efecto de frenado de un retardador.
SE526865C2 (sv) * 2004-02-25 2005-11-15 Scania Cv Ab Övervakning av motorkylvätsketemperaturgivare
JP2005256641A (ja) * 2004-03-09 2005-09-22 Toyota Motor Corp 内燃機関の冷却制御装置
GB2424474A (en) * 2005-03-21 2006-09-27 Bombardier Transp Gmbh Cooling system for an internal combustion engine, and a method of use in a vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004040327A1 (de) 2004-08-20 2006-03-09 Volkswagen Ag Vorrichtung und Verfahren zur Überwachung der Leistungsfähigkeit eines Kühlsystems eines Fahrzeugs

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014063863A1 (fr) * 2012-10-25 2014-05-01 Voith Patent Gmbh Procédé de limitation du couple de freinage maximal d'un ralentisseur hydrodynamique ainsi que ralentisseur hydrodynamique pour véhicule automobile
CN104755785A (zh) * 2012-10-25 2015-07-01 福伊特专利有限公司 限制液力减速器的最大制动力矩的方法以及机动车的液力减速器
CN106232959A (zh) * 2014-04-30 2016-12-14 卡明斯公司 优化发动机和交通工具传动系减速器集成的***和方法
EP3137747A4 (fr) * 2014-04-30 2017-12-13 Cummins, Inc. Système et procédé destinés à optimiser l'intégration de moteurs et de ralentisseurs sur transmission de véhicule
CN106232959B (zh) * 2014-04-30 2020-12-22 康明斯公司 优化发动机和交通工具传动系减速器集成的***和方法
US11230969B2 (en) 2014-04-30 2022-01-25 Cummins Inc. System and method for optimizing the integration of engines and vehicle driveline retarders

Also Published As

Publication number Publication date
EP2039903A3 (fr) 2013-01-23
DE102007045370A1 (de) 2009-04-02
BRPI0804065A2 (pt) 2010-06-15

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