US20040011304A1 - Method for the temperature regulation of an engine - Google Patents

Method for the temperature regulation of an engine Download PDF

Info

Publication number
US20040011304A1
US20040011304A1 US10/399,301 US39930103A US2004011304A1 US 20040011304 A1 US20040011304 A1 US 20040011304A1 US 39930103 A US39930103 A US 39930103A US 2004011304 A1 US2004011304 A1 US 2004011304A1
Authority
US
United States
Prior art keywords
coolant
engine
temperature
cooling circuit
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.)
Abandoned
Application number
US10/399,301
Other languages
English (en)
Inventor
Roland Herynek
Martin Vollmer
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.)
Robert Bosch GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HERYNEK, ROLAND, VOLLMER, MARTIN
Publication of US20040011304A1 publication Critical patent/US20040011304A1/en
Abandoned legal-status Critical Current

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
    • 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
    • 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
    • F01P2023/00—Signal processing; Details thereof
    • 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
    • F01P2025/04—Pressure
    • F01P2025/06—Pressure for determining flow
    • 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
    • F01P2025/30—Engine incoming fluid 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
    • F01P2025/32—Engine outcoming fluid 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
    • F01P2025/46—Engine parts temperature

Definitions

  • the invention is based on a method for regulating the temperature of an engine, in particular an internal combustion engine of a motor vehicle, according to the general class of the main claims.
  • cooling systems are used, among other things, in the case of which a coolant flows through coolant passages that surround the cylinder head and engine block of the internal combustion engine, for example. At least a portion of the heat absorbed by the coolant is then released to the surroundings via a radiator, or it is used to heat the passenger compartment, for example, by means of an additional heat exchanger provided in the cooling system.
  • the coolant temperature can be measured by a temperature sensor that is located in the cooling circuit and that detects the actual temperature of the cooling water at that point in time and forwards it to an electronic control unit, for example.
  • This open-loop control monitors the temperature of the coolant and compares it with a permissible maximum temperature for the coolant and/or for the engine through which coolant flows that must not be exceeded during operation.
  • a device and a method for cooling an internal combustion engine is made known in EP 0 442 489 A1, in the case of which a first temperature sensor detects the temperature of the coolant at the outlet of the cylinder head. Furthermore, the method described in EP 0 442 489 A1 comprises a further temperature sensor that is installed directly on the engine block and serves to determine the engine oil temperature. If the engine oil temperature rises above a specified value, the coolant flow that flows through the internal combustion engine is divided into two different branches. The first branch of the coolant flow continues to flow through the cylinder head, while the second, remaining part of the coolant flow flows through the cylinder block.
  • the volumetric flow of coolant through the cylinder head can be controlled via closed-loop control in accordance with the engine oil temperature in the cylinder head.
  • Publication EP 0 894 953 A1 discloses a cooling system for the internal combustion engine of a motor vehicle having a plurality of sensors that measures a corresponding number of parameters of the engine during operation.
  • the cooling system described in EP 0 894 953 A1 comprises three temperature sensors, in particular, that are installed in the cylinder head cooling circuit, the engine block cooling circuit, and at the outlet of the cylinder head cooling circuit. Each of these sensors detects a temperature of the engine case and forwards the corresponding signals to a central electronic control unit of the cooling circuit.
  • the central control unit of the cooling system controls various components of the cooling system located in the cooling circuit, such as a cooling-air fan, a coolant pump, or a throttle and/or bypass valve.
  • a disadvantage of the cooling system for the internal combustion engine of a motor vehicle disclosed in EP 0 894 953 A1 is the fact that a plurality of sensors, in particular temperature sensors, must be used to determine the engine temperature. Due to the high mechanical and thermal stresses in the engine compartment of an internal combustion engine, these sensors are highly susceptible to malfunction or total functional failure. Moreover, the use of a plurality of sensors represents a not-inconsequential cost factor as well as a marked increase in the complexity of the cooling system and/or its closed-loop control.
  • the method according to the invention for regulating the temperature of an engine having the characterizing features of the main claim has the advantage that the number of sensors used in the cooling system can be reduced to a minimum.
  • the engine temperature and/or the temperature of individual components of the engine can be determined in simple fashion by means of the coolant temperature and the volumetric flow of the coolant that is directed through the engine and/or individual components of the engine. In this manner, a plurality of detectors can be eliminated.
  • due to the continuous diagnosis of the engine temperature it is ensured that the heat-sensitive parts of the engine are not damaged.
  • an electrical pump for circulating coolant in the cooling circuit will deliver a constant volumetric flow given a constant electrical voltage U, a constant electrical current I, and a rotational speed N of the pump.
  • the operating point of the pump i.e., the pressure rise ⁇ p, as well as the volumetric flow ⁇ V/ ⁇ t, can be determined with reference to the known pump characteristics and the known resistance to flow of the cooling circuit when the values (U, I, N) mentioned hereinabove are known.
  • the load on the pump and, therefore, the volumetric flow delivered by the pump can be deduced from the rotational speed N of the pump when the state is known (i.e., constant electrical voltage U applied to the pump), if said pump always draws a constant electrical current I.
  • the load on the pump and, therefore, the volumetric flow of the coolant can be deduced from the measurement of the electrical current I required by the pump.
  • a numeric model of the cooling circuit with its individual components, in particular the engine and/or a thermal model of the engine, the tube routing with the associated resistances to flow, the placement of the valves, and further parameters that describe the cooling circuit are stored in an electronic control unit belonging to the cooling circuit.
  • a model and/or a data set is therefore stored in the electronic control unit that models the influence or the maximum permissible deviations of the volumetric flow of coolant on the component temperature.
  • a correction signal and/or a manipulated variable can therefore be generated that changes the volumetric flow of coolant through the engine in a desired fashion in order to adjust the actual coolant temperature to the setpoint coolant temperature.
  • the method according to the invention uses a second manipulated variable and/or a second correction signal to ensure that the cooling capacity of the cooling circuit works in an optional range for the engine.
  • This second correction signal can be generated directly from the coolant temperature.
  • the coolant temperature is detected, e.g, via a temperature sensor, and the change in coolant temperature over time is compared with a time-dependent model of the coolant temperature curve stored in the electronic control unit.
  • this time-dependent model of the coolant temperature stored in the electronic control unit can be a computer model of the coolant temperature curve during a cold start of the motor vehicle, or it can simulate another typical driving situation.
  • the theoretical model makes it possible to detect whether the coolant temperature of the cooling circuit increases to the “correct extent”.
  • an optimum temperature band width for the engine can be stored in the electronic control unit, for example. If the actual coolant temperature deviates from the setpoint coolant temperature stored in the electronic control unit for the particular situation, or if the actual coolant temperature deviates from the specified temperature band width, a second correction signal is generated.
  • the open-loop and/or closed-loop control of the cooling circuit by means of this second manipulated variable can supersede the corresponding closed-loop control of the volumetric flow, so that this second closed-loop control can be used as an additional safety control for the cooling circuit.
  • the delivery amount of the circulation pump i.e., its rotational speed, in particular, can be varied in accordance with the correction signals generated. It is possible, for example, to vary the volumetric flow of coolant and, therefore, the engine temperature, as needed.
  • valves located in the cooling circuit and further components associated with the cooling circuit can be controlled via closed-loop control by the electronic control unit as needed in accordance with the generated correction signals, so that a volumetric flow of coolant adjusted in optimum fashion for the particular driving situation and/or an optimized coolant temperature prevails in the cooling circuit at all times.
  • the method according to the invention also makes it possible for the electronic control unit to control—via closed-loop control—the cooling capacity of the cooling circuit and, in particular, the volumetric flow of coolant through the engine with consideration for further operating parameters of the vehicle.
  • the optimized pollutant emission of the engine is the optimized pollutant emission of the engine as a function of the cooling capacity delivered to the engine.
  • a pollutant sensor can forward an appropriate signal to the electronic control unit of the cooling circuit, so that the electronic control unit implements an optimized configuration of the active setting elements of the cooling circuit to obtain minimal pollutant emissions based on an optimized engine temperature.
  • a model and/or a data set in the form of a program map or a data base is contained in the electronic control unit—in an analogous fashion to the temperature behavior described hereinabove—that describes the influence of the volumetric flow of coolant on the pollutant emission of the vehicle.
  • Deviations from the engine parameters that are calculated or that were stored previously in the electronic control unit can be not only diagnosed but actively corrected as well by the electronic control unit.
  • the electronic control unit can also inform the vehicle driver about deviations in the cooling system using appropriate warning signals.
  • the “on-board diagnosis” also makes it possible to detect errors or defects in the cooling system, such as blocked valves, pinched connecting lines, or defective pumps.
  • the electronic control unit that controls—via closed-loop control—the active components can be an engine control unit.
  • FIG. 1 is a simplified view of an engine compartment of a vehicle, in which a vehicle motor with a cooling circuit for this engine is located.
  • FIG. 2 is a block diagram for the temperature regulation of a vehicle engine according to an exemplary embodiment of the method according to the invention.
  • FIG. 1 is a simplified, schematic illustration of an engine compartment 10 of a vehicle, in which an internal combustion engine 12 and a cooling circuit 14 for this internal combustion engine 12 are located.
  • the heat given off by the internal combustion engine 12 is dissipated—preferably outwardly—via the cooling circuit 14 , which forms a cooling system.
  • the cooling circuit comprises a radiator 16 that is located in the cooling air stream 18 of the moving vehicle.
  • the cooling air stream 18 and, indirectly, therefore, the cooling capacity of the cooling system can be controlled via air flaps 20 that are installed in the body 22 of the vehicle.
  • the cooling capacity of the cooling circuit is a function of the temperature of the coolant at that point in time and the volumetric flow of coolant pumped through the cooling system.
  • At least one fan is located in the region of the radiator 16 that is composed of a fan wheel 26 and an electric motor 28 driving this fan wheel 26 .
  • the air flaps 20 or additional, further air flaps can also be located between the radiator 16 and the fan 24 .
  • the cooling system has an electric coolant pump 34 to pump a coolant 30 through the connecting lines 32 of the cooling system.
  • Water is used preferably as coolant, and an appropriate cold protective can be added to said water for low temperatures.
  • the coolant 30 coming from the radiator 16 , is directed by the coolant pump 34 through a forward-delivery line 35 to the engine 12 .
  • a temperature sensor 38 is located in the cooling circuit in the region of a coolant inlet 36 of the engine 12 .
  • the coolant 30 flows through the engine 12 along paths not shown further in FIG. 1, and it absorbs a certain amount of heat from the engine 12 , then it exits said engine through a coolant outlet 40 .
  • the internal combustion engine 12 comprises a second coolant inlet 50 , via which a portion of the heated coolant can be directed to a heat exchanger, e.g., for the passenger compartment of the motor vehicle.
  • Cooling circuit architectures that are more complex than the cooling system shown in the exemplary embodiment in FIG. 1 can also be combined with the method according to the invention. Only one highly simplified, schematic cooling circuit is shown in FIG. 1 to describe the method. It is not intended to represent a limitation of the possible cooling circuit architecture.
  • a further, second temperature sensor 42 that detects the temperature of the coolant 30 after it leaves the engine 12 is located in the region of the coolant outlet 40 of the engine 12 .
  • the coolant 30 travels through a return-delivery line 44 back to the radiator 16 of the cooling circuit.
  • a valve 46 is provided in the return-delivery line 44 that allows the coolant to bypass the radiator 16 via a bypass line 48 .
  • the active components of the cooling system e.g., the air flaps 20 , the fan 24 , the coolant pump 34 , the bypass valve 46 , and further components of the cooling circuit not shown explicitly in the exemplary embodiment, are adjusted and/or controlled via closed-loop control—with the aid of an electronic control unit 52 that comprises a memory 54 , a processing block 66 , and a comparing element 68 —over data lines 56 in such a fashion that the engine 12 of the vehicle has a optimum temperature and/or temperature distribution at any point in time during a driving schedule.
  • This optimum temperature can be characterized, for example, by the lowest possible fuel consumption or the lowest possible pollutant emission of the engine.
  • a pollutant sensor 72 that is also interconnected with the electronic control unit 52 via a data line 74 is provided to detect the current pollutant emission.
  • the active, adjustable components of the cooling system such as the air flaps 20 , the fan 23 , the coolant pump 34 , the bypass valve 46 , and further components of the cooling circuit not defined explicitly in the exemplary embodiment are interconnected with the electronic control unit 52 via signal lines 56 that also supply the electrical current to these adjustable components.
  • the further components 60 of the cooling circuit can be additional, adjustable valves or an additional coolant pump, for example.
  • the temperature sensors 38 and/or 42 for determining the coolant temperature are also interconnected with the electronic control unit 52 via appropriate data lines 58 .
  • the electric coolant pump 34 has an energy supply 62 that can be coupled to the vehicle's electrical supply system via the electronic control unit 52 , for example.
  • the electronic control unit 52 detects the working point of the coolant pump 34 , i.e., the volumetric flow delivered by the pump—in the exemplary embodiment shown in FIG. 22—based on the electrical current I that the electric pump requires from the energy supply. This signal is also forwarded to the electronic control unit 52 via a data line 64 .
  • the electronic control unit 52 calculates the volumetric flow of coolant pumped through the cooling circuit, and, based on this, the engine temperature and/or the temperatures of various engine components.
  • a thermal model of the cooling circuit with its components e.g, the line routing, the viscosity change of the coolant, the position of the valves, the cooling capacity of the radiator 16 and the fan 24 , and further parameters that describe the cooling system, is stored in the memory 54 of the electronic control unit 52 .
  • a data set is therefore contained in the electronic control unit 52 that models the influence of a certain volumetric flow of coolant on the engine temperature and/or on the temperature of various engine components.
  • the characteristics of the coolant pump 34 are also stored in the memory 54 of the electronic control unit 52 .
  • the electric pump 34 (during steady-state operation—will deliver a constant volumetric flow. This takes place with a constant electrical voltage U, a constant electrical current I, and a specifiable rotational speed N of the pump.
  • the particular operating point of the pump i.e., the pressure rise ⁇ P and the volumetric flow ⁇ V/ ⁇ t, can therefore be determined by the electronic control unit with reference to the pump characteristics and the stored resistances to flow of the cooling circuit when the values for electrical voltage U, electrical current I and rotational speed N of the pump are known.
  • the electronic control unit can deduce the volumetric flow delivered by the pump.
  • the electrical current I required by the coolant pump can therefore be used to evaluate and diagnose the volumetric flow of coolant delivered by the pump 34 .
  • the volumetric flow of coolant diagnosed in this fashion via the electrical current of the pump 34 is used together with the coolant temperature determined, e.g., by the temperature sensor 42 , by the electronic control unit to calculate the actual engine temperature.
  • the electronic control unit 52 By way of the comparing element 68 , the electronic control unit 52 generates one or more correction signals 56 .
  • the correction signal is used to control and/or adjust the active elements of the cooling circuit, such as the coolant pump 34 , the cooling air fan 24 , the bypass valve 46 or the air flaps 20 .
  • controlling the coolant pump 34 via closed-loop control makes it possible to adjust the volumetric flow of coolant through the engine 12 and optimize the temperature of the engine and/or the temperatures of diverse engine components with regard for fuel consumption and/or pollutant emission.
  • the electronic control unit 52 also delivers a command and control signal to the bypass valve 46 that can adjust the temperature of the coolant at the coolant inlet 36 to the desired value by opening and/or closing the bypass line 48 .
  • the temperature sensor 38 can determine the coolant temperature in front of the coolant inlet 36 of the engine 12 and forward this signal to the electronic control unit 52 . In this fashion, it is possible to detect a defective component in the cooling circuit if it does not meet the thermal specifications of the electronic control unit 52 and the thermal model stored in the electronic control unit.
  • the change in temperature of the coolant over time during the starting phase of the internal combustion engine can be compared with a time-dependent model of the coolant temperature for this phase stored in the electronic control unit. If the actual temperature values deviate from the specified setpoint temperature values—which can be stored in the memory 54 of the electronic control unit 52 in the form of a temperature range—the electronic control unit 52 also issues an appropriate warning signal that indicates the presence of a malfunction in the cooling circuit and, therefore, a possible defective component.
  • the electronic control unit also has appropriate pollutant sensors 72 , for example, that detect the actual pollutant emission of the internal combustion engine and report the result to the processing block 66 of the electronic control unit 52 via a line 74 .
  • the pollutant sensors 72 therefore make it possible to also adjust the engine temperature to its particular optimum value by running a comparison 68 with corresponding data stored in the memory 54 of the electronic control unit.
  • the actual engine temperature and/or component temperature of the engine can be diagnosed indirectly via other characteristic values of the coolant pump. If the pump always draws a constant electrical current I during steady-state operation, i.e., when electrical voltage U is constant, then the load on the pump and, therefore, the volumetric flow that is delivered can be deduced from the rotational speed N of the pump. By using the volumetric flow detected in this fashion and the measured coolant temperature, then, in turn, a component temperature of the engine can be deduced.
  • the other characteristic values (U, N) of the coolant pump must be detected and processed by the electronic control unit 52 .
  • the measurement variables (U, I, N) are evaluated currently by the electronic control unit 52 , where they are then compared with the computer model and the stored pump characteristics. Deviations from the data that were calculated or stored previously in the electronic control unit make it possible, therefore, to detect faults in the cooling system, e.g., caused by blocked valves, defective lines, or an inoperative coolant pump.

Landscapes

  • 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)
US10/399,301 2001-09-08 2002-06-20 Method for the temperature regulation of an engine Abandoned US20040011304A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144275.0 2001-09-08
DE10144275A DE10144275A1 (de) 2001-09-08 2001-09-08 Verfahren zur Temperaturregelung eines Motors
PCT/DE2002/002254 WO2003027456A1 (fr) 2001-09-08 2002-06-20 Procede de regulation de la temperature d'un moteur

Publications (1)

Publication Number Publication Date
US20040011304A1 true US20040011304A1 (en) 2004-01-22

Family

ID=7698319

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/399,301 Abandoned US20040011304A1 (en) 2001-09-08 2002-06-20 Method for the temperature regulation of an engine

Country Status (5)

Country Link
US (1) US20040011304A1 (fr)
EP (1) EP1454039B1 (fr)
JP (1) JP2005504209A (fr)
DE (2) DE10144275A1 (fr)
WO (1) WO2003027456A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090014494A1 (en) * 2007-07-11 2009-01-15 Hilti Aktiengesellschaft Combustion-operated setting tool
US20090301408A1 (en) * 2006-01-19 2009-12-10 Christophe Mounetou Method and device for controlling the initial opening of a thermostat regulating the temperature of an internal combustion engine
US20100251977A1 (en) * 2009-04-06 2010-10-07 Honda Motor Co., Ltd. Cooling System For Variable Cylinder Engines
US20110095716A1 (en) * 2009-10-26 2011-04-28 Fanuc Ltd Motor driver for machine tool with fan motor
US20140095056A1 (en) * 2011-07-11 2014-04-03 Ford Global Technologies, Llc Powertrain Delta Current Estimation Method
US20140343821A1 (en) * 2013-05-15 2014-11-20 Kia Motors Corporation Method and system for diagnosing insufficiency of vehicle coolant
CN104691457A (zh) * 2013-12-09 2015-06-10 福特全球技术公司 车辆
US20150330287A1 (en) * 2014-05-13 2015-11-19 International Engine Intellectual Property Company, Llc Engine cooling fan control strategy
US20160258338A1 (en) * 2015-03-06 2016-09-08 Deere & Company Fan Control System and Method
US20170356327A1 (en) * 2016-06-09 2017-12-14 GM Global Technology Operations LLC Electric pump operating strategy
CN108999694A (zh) * 2017-06-06 2018-12-14 大陆汽车有限公司 冷却装置、机动车辆和用于操作冷却装置的方法
US20190010939A1 (en) * 2016-01-18 2019-01-10 Nidec Global Appliance Germany Gmbh Method for detecting a blocked valve of a coolant compressor and a control system for a coolant compressor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009892A1 (de) * 2006-03-03 2007-09-06 Audi Ag Steuervorrichtung zum Steuern der Kühlmitteltemperatur eines Verbrennungsmotors eines Kraftfahrzeugs sowie Verbrennungsmotor mit einer solchen Steuervorrichtung
DE102008011225A1 (de) * 2008-02-26 2009-08-27 Robert Bosch Gmbh Diagnoseverfahren und Antriebssteuerung
CN104364489B (zh) * 2012-06-18 2017-02-22 丰田自动车株式会社 粘度测定装置
DE102013216627A1 (de) * 2013-08-22 2015-02-26 Robert Bosch Gmbh Drehzahlvariable Fluid-Kühl-Filter-Anordnung
JP6079759B2 (ja) 2014-12-01 2017-02-15 トヨタ自動車株式会社 エンジン冷却システムの孔詰まり判定装置及び方法
CN111441860B (zh) * 2020-04-28 2024-04-12 潍坊力创电子科技有限公司 一种应用电子温控阀的发动机热管理系统及其实现方法
DE102020206513A1 (de) 2020-05-26 2021-12-02 Zf Friedrichshafen Ag Verfahren zum Betrieb einer Pumpenantriebseinheit
CN114542263B (zh) * 2022-03-22 2023-04-18 潍柴动力股份有限公司 一种冷却水温度调控方法及控制系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2712711B2 (ja) 1990-02-16 1998-02-16 株式会社デンソー 内燃機関の冷却方法及びその装置
IT1293664B1 (it) 1997-08-01 1999-03-08 C R F Societa Conosrtile Per A Sistema di raffreddamento per motore a combustione interna di autoveicolo
US6178928B1 (en) * 1998-06-17 2001-01-30 Siemens Canada Limited Internal combustion engine total cooling control system
JP3644262B2 (ja) * 1998-07-29 2005-04-27 株式会社デンソー 液冷式内燃機関の冷却装置

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090301408A1 (en) * 2006-01-19 2009-12-10 Christophe Mounetou Method and device for controlling the initial opening of a thermostat regulating the temperature of an internal combustion engine
US8201524B2 (en) * 2006-01-19 2012-06-19 Renault S.A.S. Method and device for controlling the initial opening of a thermostat regulating the temperature of an internal combustion engine
US8123095B2 (en) * 2007-07-11 2012-02-28 Hilti Aktiengesellschaft Cornbustion-operated setting tool
US20090014494A1 (en) * 2007-07-11 2009-01-15 Hilti Aktiengesellschaft Combustion-operated setting tool
US20100251977A1 (en) * 2009-04-06 2010-10-07 Honda Motor Co., Ltd. Cooling System For Variable Cylinder Engines
US8215283B2 (en) * 2009-04-06 2012-07-10 Honda Motor Co., Ltd. Cooling system for variable cylinder engines
US20110095716A1 (en) * 2009-10-26 2011-04-28 Fanuc Ltd Motor driver for machine tool with fan motor
US9447765B2 (en) * 2011-07-11 2016-09-20 Ford Global Technologies, Llc Powertrain delta current estimation method
US20140095056A1 (en) * 2011-07-11 2014-04-03 Ford Global Technologies, Llc Powertrain Delta Current Estimation Method
US20140343821A1 (en) * 2013-05-15 2014-11-20 Kia Motors Corporation Method and system for diagnosing insufficiency of vehicle coolant
CN104163150A (zh) * 2013-05-15 2014-11-26 现代自动车株式会社 用于诊断车辆冷却剂不足的方法和系统
US9169768B2 (en) * 2013-05-15 2015-10-27 Hyundai Motor Company Method and system for diagnosing insufficiency of vehicle coolant
CN104691457A (zh) * 2013-12-09 2015-06-10 福特全球技术公司 车辆
US20150330287A1 (en) * 2014-05-13 2015-11-19 International Engine Intellectual Property Company, Llc Engine cooling fan control strategy
US9523306B2 (en) * 2014-05-13 2016-12-20 International Engine Intellectual Property Company, Llc. Engine cooling fan control strategy
US20160258338A1 (en) * 2015-03-06 2016-09-08 Deere & Company Fan Control System and Method
US9752492B2 (en) * 2015-03-06 2017-09-05 Deere & Company Fan control system and method
US20190010939A1 (en) * 2016-01-18 2019-01-10 Nidec Global Appliance Germany Gmbh Method for detecting a blocked valve of a coolant compressor and a control system for a coolant compressor
US20170356327A1 (en) * 2016-06-09 2017-12-14 GM Global Technology Operations LLC Electric pump operating strategy
CN107489517A (zh) * 2016-06-09 2017-12-19 通用汽车环球科技运作有限责任公司 电动泵操作策略
US10605151B2 (en) * 2016-06-09 2020-03-31 GM Global Technology Operations LLC Electric pump operating strategy
CN108999694A (zh) * 2017-06-06 2018-12-14 大陆汽车有限公司 冷却装置、机动车辆和用于操作冷却装置的方法

Also Published As

Publication number Publication date
JP2005504209A (ja) 2005-02-10
EP1454039A1 (fr) 2004-09-08
WO2003027456A1 (fr) 2003-04-03
DE50211623D1 (de) 2008-03-13
EP1454039B1 (fr) 2008-01-23
DE10144275A1 (de) 2003-03-27

Similar Documents

Publication Publication Date Title
US20040011304A1 (en) Method for the temperature regulation of an engine
US7263954B2 (en) Internal combustion engine coolant flow
US6655326B2 (en) ECU temperature control
EP0894953B1 (fr) Système de refroidissement pour un moteur à combustion interne d'un véhicule automobile
US6857398B2 (en) Cooling system for internal combustion engine
US7168399B2 (en) Abnormality diagnosis apparatus and engine cooling system having the same
US6343572B1 (en) Method for regulating heat in an internal combustion engine
US20050028756A1 (en) Engine cooling system
US6453853B1 (en) Method of controlling a variable speed fan
US20060162676A1 (en) Engine cooling system
JP2004538418A (ja) 自動車の冷却および加熱のための装置
CN103362628A (zh) 发动机冷却系统控制
US9506414B2 (en) Cold start emissions reduction diagnostic system for an internal combustion engine
CN103362629A (zh) 发动机冷却系统控制
CN103362631A (zh) 发动机冷却系统控制
US10619553B2 (en) Engine-controlling device
US11105254B2 (en) Cooling system and internal combustion engine
US6470863B2 (en) Internal combustion engine having combustion heater
US6851399B2 (en) Method for monitoring a coolant circuit of an internal combustion engine
EP3517752B1 (fr) Moteur à combustion interne comprenant un turbocompresseur
US10612451B2 (en) Method for operating a combustion machine, combustion machine and motor vehicle
JP2004515715A (ja) 自動車用の冷却システム
US6862518B2 (en) Method for monitoring a coolant circuit of an internal combustion engine
JP2006105105A (ja) エンジンの冷却装置
GB2486734A (en) Cooling re-circulated exhaust gases with engine coolant

Legal Events

Date Code Title Description
AS Assignment

Owner name: ROBERT BOSCH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HERYNEK, ROLAND;VOLLMER, MARTIN;REEL/FRAME:014298/0913

Effective date: 20030318

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE