EP0731260A1 - Procédé de commande d'un circuit de refroidissement d'un moteur à combustion interne - Google Patents

Procédé de commande d'un circuit de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
EP0731260A1
EP0731260A1 EP96100636A EP96100636A EP0731260A1 EP 0731260 A1 EP0731260 A1 EP 0731260A1 EP 96100636 A EP96100636 A EP 96100636A EP 96100636 A EP96100636 A EP 96100636A EP 0731260 A1 EP0731260 A1 EP 0731260A1
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EP
European Patent Office
Prior art keywords
coolant
temperature
flow
internal combustion
combustion 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
EP96100636A
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German (de)
English (en)
Other versions
EP0731260B1 (fr
Inventor
Karsten Dipl.-Ing. Michels
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.)
Volkswagen AG
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Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP0731260A1 publication Critical patent/EP0731260A1/fr
Application granted granted Critical
Publication of EP0731260B1 publication Critical patent/EP0731260B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
    • 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
    • F01P2023/08—Microprocessor; Microcomputer
    • 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
    • F01P2025/60—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
    • F01P2031/30—Cooling after the engine is stopped
    • 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
    • F01P2037/00—Controlling
    • F01P2037/02—Controlling starting
    • 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
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P2060/08—Cabin heater
    • 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 regulating a cooling circuit of an internal combustion engine, in particular for motor vehicles, with at least one coolant pump for setting a coolant flow, a cooler module in which heat exchange takes place between an air flow that can be set by means of a blower and the coolant, and possibly a temperature-dependent valve for setting a mixing ratio between the coolant flow led via the cooler module and a coolant flow led via a second flow branch and a control device which controls at least the coolant flow generated by the coolant pump and the air flow generated by the fan.
  • German published patent application DE 44 08 078 A1 describes a device for controlling the cooling of an internal combustion engine, which has a coolant pump for generating the flow of coolant in a coolant circuit guided via the internal combustion engine and a cooler, a blower for generating an air flow through the cooler and a control device which controls the air flow generated by the fan as a function of a temperature setpoint of the coolant.
  • the coolant pump is driven by an organ of the internal combustion engine and thus generates a coolant flow which is dependent on the speed of the internal combustion engine and which, particularly in the warm-up phase after the start of the internal combustion engine, requires too much energy and unnecessarily extends the warm-up phase of the internal combustion engine.
  • the coolant pump driven by an electric motor is controlled as a function of a temperature setpoint in addition to the blowers that generate the air flow through the cooler, but the temperature setpoint is dependent on the Engine load and engine speed specified, so that here too, the warm-up phase is unnecessarily extended by the operating point-dependent control of the coolant pump and the fan.
  • the object of the invention is therefore to provide a method for regulating a cooling circuit for an internal combustion engine, in which the power consumption of the coolant pump and the fan producing the air flow through the cooler module is kept low and the warm-up phase of the internal combustion engine by generating an excessively high coolant flow is not extended unnecessarily.
  • a temperature limit value of the coolant by specifying a temperature limit value of the coolant, a distinction is made between the warm-up phase after the start of the internal combustion engine and an operation of the internal combustion engine at operating temperature.
  • both the coolant flow generated by the coolant pump and the air flow generated by the blower are regulated by the cooler module as a function of a differential temperature setpoint.
  • the coolant pump and the blower are regulated depending on the differential temperature setpoint and a temperature setpoint of the coolant at the engine outlet.
  • a further shortening of the warm-up phase is achieved if neither a coolant flow from the coolant pump nor an air flow from the blower is generated below a coolant start temperature that is lower than the temperature limit value and a defined period of time after the internal combustion engine is started.
  • the time period in which neither the coolant pump nor the blower are controlled is determined so that no hot spots can occur on the internal combustion engine.
  • the control of the coolant pump and / or the fan producing the air flow is dependent of the heat flow into the coolant. This is done by forwarding the control signals generated by the control unit to the coolant pump and / or the blower with a delay. The size of the delay is chosen so that the time behavior of the coolant pump and the fan corresponds to the dynamic behavior of the heat flow of the coolant.
  • the coolant flow generated by the coolant pump and the air flow adjustable by the blower are controlled as a function of a time comparison of the efficiencies of the coolant pump and blower for heat dissipation from the cooler module for a minimal use of energy.
  • the temperature setpoint of the coolant for the control of at least the coolant pump and the blower is preferably determined as a function of an optimal engine temperature for each operating point of the internal combustion engine.
  • the heat flow predetermined at least by the operating point of the internal combustion engine and by the coolant flow is stored as a map in the control unit.
  • the coolant circuit shown in FIG. 1 for an internal combustion engine 2 of a motor vehicle consists of several line branches a to f, the opening cross sections of which are controlled by a temperature-dependent valve 6 (thermostat).
  • the direction of rotation of the coolant flow, which is driven by the coolant pump 3, is indicated by arrows.
  • the line branch a is guided via a cooler module 1 for cooling the coolant emerging from the internal combustion engine 2. Air is drawn in from outside the motor vehicle by the fan 4 arranged behind the radiator module 1. When flowing through the cooler module 1, a heat exchange takes place between the air flow ⁇ l adjustable by the fan 4 and the coolant flow ⁇ w .
  • a line branch b is provided, the cross section of which can be controlled by the temperature-dependent valve 6 in order to influence the coolant temperature.
  • the line branch c has an expansion tank 7 and serves to regulate the pressure in the entire coolant circuit.
  • a heat exchanger 8 for the interior heating of the motor vehicle and a cooler 9 and 10 for cooling the engine oil and the transmission oil are arranged in the additional line branches d to f. These line branches d to f are optional.
  • the corresponding cooling or heating functions can also be solved in other ways.
  • the coolant circuit includes a control unit 5, for example the control unit of the internal combustion engine, which receives the output signal S sen of a coolant temperature ⁇ w as an input signal, temperature sensor 11 which is detected at the engine outlet and, via the output signals S pump , S air and S therm, both the speed of the Coolant pump 3 and the fan 4 and the temperature-dependent valve 6 controls.
  • a control unit 5 for example the control unit of the internal combustion engine, which receives the output signal S sen of a coolant temperature ⁇ w as an input signal, temperature sensor 11 which is detected at the engine outlet and, via the output signals S pump , S air and S therm, both the speed of the Coolant pump 3 and the fan 4 and the temperature-dependent valve 6 controls.
  • FIGS. 2 to 4 show flow diagrams of this control method for explanation.
  • the warm-up V1 of the internal combustion engine As illustrated in FIG. 2, three cases are distinguished in the method according to the invention; the warm-up V1 of the internal combustion engine, the driving mode V2 at the operating temperature of the coolant and the run-on V3.
  • the first step A1 it is checked whether the internal combustion engine 2 was started., This is the case, a comparison is made of the coolant temperature ⁇ w, (output signal S sen of the temperature sensor 11) at the engine outlet to a termination of the warm-up phase ⁇ V1 characterizing temperature limit value w , warm. At a coolant temperature ⁇ w, below this temperature limit, warm-up V1 is detected. If the coolant temperature ⁇ w, the temperature limit ⁇ w, warml has been reached, the coolant circuit is controlled according to the algorithm for driving mode V2 at operating temperature.
  • the coolant circuit is controlled using an algorithm for the run-on V3. If the coolant temperature ⁇ w is below the temperature limit ⁇ w, the control stops after the internal combustion engine 2 is restarted.
  • the coolant temperature ⁇ w is compared in a first method step , is at the engine outlet with a coolant start temperature ⁇ w, start . If the coolant temperature is below the coolant start value ⁇ w, start , the coolant pump 3 starts with a delay of the time period t start in order to keep the heat flow from components of the internal combustion engine 2 into the coolant as low as possible and thus to achieve a faster heating of the components .
  • the coolant flow ⁇ w generated by the coolant pump 3 is continuously increased until, for the first time, the minimum coolant flow ⁇ w , min for maintaining the differential temperature setpoint ⁇ w, Mot, should between engine and outlet is reached.
  • the control signal S pump, min for the coolant pump 3 is calculated in the control unit 5 from the minimum coolant flow ⁇ w, min .
  • the coolant pump 3 is regulated to maintain the differential temperature setpoint ⁇ w, Mot, coolant with a control signal S pump, warml .
  • the differential temperature actual value ⁇ w, Mot, required for the control results from the heat flow Q ⁇ Mot from the internal combustion engine into the coolant, which in turn is calculated from the current coolant flow ⁇ w , the current engine load L Mot and the engine speed n.
  • the heat flow Q ⁇ Mot is preferably stored as a map in the control unit 5 for the special internal combustion engine 2.
  • the reaction of the coolant pump 3 to short-term engine load and speed changes should be prevented. Since, due to the thermal inertia of the internal combustion engine 2, brief changes in the engine load L Mot and the engine speed n play no role for the heat flow Q ⁇ Mot in the coolant, carrying the speed of the coolant pump 3 would represent unnecessary energy consumption.
  • the control signal S pump for the coolant pump is therefore assigned a dynamic transmission behavior, the time constant T stg of which is selected such that the time behavior of the coolant pump roughly corresponds to the behavior of the heat flow Q ⁇ Mot from the internal combustion engine into the coolant. It follows that the speed change of the coolant pump 3 follows the change in the heat flow Qestr Mot in the coolant.
  • the blower 4 is not activated during the warm-up phase V1, ie no airflow ⁇ l is generated by the cooler module 1.
  • the warm-up phase V1 has ended when the current coolant temperature ⁇ w, the temperature limit value den w, warml is reached for the first time.
  • the coolant temperature is also controlled as a function of a temperature setpoint ⁇ w, according to the algorithm for driving mode V2 at operating temperature instead.
  • the temperature setpoint ⁇ w, set is first calculated. For this purpose, there is a map in the control unit 5 in which the optimum temperature setpoint ⁇ w, for the specified engine temperature with variable engine load L Mot , engine speed n and coolant flow ⁇ w , is stored.
  • the control temperature ⁇ w, therm for the temperature-dependent valve 6 results, from which the control signal S therm for the temperature-dependent valve 6 is determined.
  • the valve 6 regulates the coolant temperature ⁇ w via the coolant flow conditions between the line branch a led via the cooler module 1 and the line branch b.
  • the minimum coolant flow ⁇ w, min the required minimum speed of the coolant pump 3 and thus the optimal control signal S pump, min . If the current coolant temperature exceeds ⁇ w, the temperature setpoint is ⁇ w, and if the engine outlet is hot by a difference value ⁇ w, either the speed of the coolant pump 3 and thus the coolant flow ⁇ w or the speed of the fan 4 and thus the air flow ⁇ l increased. Whether it makes more sense in terms of energy to change the speed of the coolant pump 3 or of the blower 4 is determined by comparing their efficiency for heat dissipation at the cooler module 1 over time.
  • the coolant circuit is simultaneously used to cool the engine oil via a cooler 9, the current oil temperature ⁇ oil can be monitored with a sensor (not shown). Exceeds the current oil temperature ⁇ oil has a temperature limit value ⁇ oil, cross so gradually the coolant temperature ⁇ w is reduced until the oil temperature ⁇ oil drops below this limit temperature value again. The coolant temperature required for the selected engine temperature is then set again.
  • the dynamic behavior of the control in the event of brief changes in the engine load L Mot and the engine speed n is different for compliance with the differential temperature setpoint ⁇ w, Mot, setpoint and the temperature setpoint ⁇ w, setpoint.
  • the control according to the differential temperature setpoint ⁇ w, Mot, soll corresponds in dynamics to that of warm-up V1.
  • the regulation according to the temperature setpoint ⁇ w should be done faster by varying the valve current S term and the speeds of the coolant pump 3 and blower 4.
  • a compromise must be found between an energetic optimum and the temperature constancy of the components of the internal combustion engine 2. For energy purposes, it makes sense to allow brief temperature changes in the components, such as those that occur during the overtaking process.

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)
  • Air-Conditioning For Vehicles (AREA)
EP96100636A 1995-03-08 1996-01-18 Procédé de commande d'un circuit de refroidissement d'un moteur à combustion interne Expired - Lifetime EP0731260B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508104A DE19508104C2 (de) 1995-03-08 1995-03-08 Verfahren zur Regelung eines Kühlkreislaufes eines Verbrennungskraftmotors
DE19508104 1995-03-08

Publications (2)

Publication Number Publication Date
EP0731260A1 true EP0731260A1 (fr) 1996-09-11
EP0731260B1 EP0731260B1 (fr) 2000-06-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100636A Expired - Lifetime EP0731260B1 (fr) 1995-03-08 1996-01-18 Procédé de commande d'un circuit de refroidissement d'un moteur à combustion interne

Country Status (4)

Country Link
US (1) US5724924A (fr)
EP (1) EP0731260B1 (fr)
DE (2) DE19508104C2 (fr)
ES (1) ES2148598T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752016A1 (fr) * 1996-07-31 1998-02-06 Renault Dispositif de refroidissement d'un moteur a combustion interne
EP0952315A1 (fr) * 1998-04-24 1999-10-27 GATE S.p.A. Système de commande pour minimiser la consommation d'énergie dans un système de refroidissement d'un moteur à combustion interne
WO2000015952A1 (fr) * 1998-09-11 2000-03-23 Müller-BBM GmbH Systeme de refroidissement, notamment pour vehicules ferroviaires
WO2001012964A1 (fr) * 1999-08-18 2001-02-22 Robert Bosch Gmbh Procede de regulation de la temperature de l'agent refrigerant d'un moteur a combustion interne a l'aide d'une pompe de fluide refrigerant a commande electrique
EP3211194A1 (fr) * 2011-12-01 2017-08-30 Paccar Inc Systèmes et procédés de commande d'une pompe a eau à vitesse variable

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US5660149A (en) * 1995-12-21 1997-08-26 Siemens Electric Limited Total cooling assembly for I.C. engine-powered vehicles
JP3473398B2 (ja) * 1998-05-01 2003-12-02 株式会社日立製作所 地図応用システムおよび地図表示制御方法
US6178928B1 (en) 1998-06-17 2001-01-30 Siemens Canada Limited Internal combustion engine total cooling control system
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FR2793842B1 (fr) * 1999-05-17 2002-06-14 Valeo Thermique Moteur Sa Dispositif electronique de regulation du refroidissement d'un moteur thermique de vehicule automobile
FR2796987B1 (fr) 1999-07-30 2002-09-20 Valeo Thermique Moteur Sa Dispositif de regulation du refroidissement d'un moteur thermique de vehicule automobile
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FR2808304B1 (fr) * 2000-04-27 2002-11-15 Valeo Thermique Moteur Sa Dispositif de refroidissement a l'arret d'un moteur thermique de vehicule automobile
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DE10123444B4 (de) * 2001-05-14 2006-11-09 Siemens Ag Regelanlage zum Regeln der Kühlmitteltemperatur einer Brennkraftmaschine
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FR2869355B1 (fr) * 2004-04-22 2010-09-10 Valeo Thermique Moteur Sa Procede de regulation thermique par modele predictif pour un circuit de refroidissement d'un moteur
JP4631652B2 (ja) * 2005-10-25 2011-02-16 トヨタ自動車株式会社 冷却システムおよびその制御方法並びに自動車
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DE102008000907A1 (de) 2008-04-01 2009-10-08 Robert Bosch Gmbh Magnetventil mit mehrteiligem Anker ohne Ankerführung
DE102009001706A1 (de) 2009-03-20 2010-09-23 Robert Bosch Gmbh Restluftspaltscheibe
US8215381B2 (en) * 2009-04-10 2012-07-10 Ford Global Technologies, Llc Method for controlling heat exchanger fluid flow
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US9022647B2 (en) 2012-03-30 2015-05-05 Ford Global Technologies, Llc Engine cooling system control
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US8689617B2 (en) 2012-03-30 2014-04-08 Ford Global Technologies, Llc Engine cooling system control
US8922033B2 (en) 2013-03-04 2014-12-30 General Electric Company System for cooling power generation system
US9523306B2 (en) * 2014-05-13 2016-12-20 International Engine Intellectual Property Company, Llc. Engine cooling fan control strategy
JP6123741B2 (ja) * 2014-06-20 2017-05-10 トヨタ自動車株式会社 冷却器
US10480391B2 (en) * 2014-08-13 2019-11-19 GM Global Technology Operations LLC Coolant control systems and methods to prevent coolant boiling
US9957875B2 (en) 2014-08-13 2018-05-01 GM Global Technology Operations LLC Coolant pump control systems and methods for backpressure compensation
DE102015006303A1 (de) * 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
DE102015006302A1 (de) 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
KR101694012B1 (ko) * 2015-06-18 2017-01-06 현대자동차주식회사 차량의 워터펌프 제어방법 및 제어장치
JP6384409B2 (ja) * 2015-06-24 2018-09-05 トヨタ自動車株式会社 排熱回収器構造
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Cited By (10)

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FR2752016A1 (fr) * 1996-07-31 1998-02-06 Renault Dispositif de refroidissement d'un moteur a combustion interne
EP0952315A1 (fr) * 1998-04-24 1999-10-27 GATE S.p.A. Système de commande pour minimiser la consommation d'énergie dans un système de refroidissement d'un moteur à combustion interne
US6213061B1 (en) 1998-04-24 2001-04-10 Gate S.P.A. Control system for minimizing electricity consumption in a cooling system of an internal combustion engine
WO2000015952A1 (fr) * 1998-09-11 2000-03-23 Müller-BBM GmbH Systeme de refroidissement, notamment pour vehicules ferroviaires
WO2001012964A1 (fr) * 1999-08-18 2001-02-22 Robert Bosch Gmbh Procede de regulation de la temperature de l'agent refrigerant d'un moteur a combustion interne a l'aide d'une pompe de fluide refrigerant a commande electrique
US6662761B1 (en) 1999-08-18 2003-12-16 Robert Bosch Gmbh Method for regulating the temperature of the coolant in an internal combustion engine using an electrically operated coolant pump
EP3211194A1 (fr) * 2011-12-01 2017-08-30 Paccar Inc Systèmes et procédés de commande d'une pompe a eau à vitesse variable
US10119453B2 (en) 2011-12-01 2018-11-06 Paccar Inc Systems and methods for controlling a variable speed water pump
AU2017201730B2 (en) * 2011-12-01 2019-03-28 Paccar Inc. Systems and methods for controlling a variable speed water pump
US10914227B2 (en) 2011-12-01 2021-02-09 Paccar Inc Systems and methods for controlling a variable speed water pump

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EP0731260B1 (fr) 2000-06-07
DE59605375D1 (de) 2000-07-13
ES2148598T3 (es) 2000-10-16
US5724924A (en) 1998-03-10
DE19508104A1 (de) 1996-09-12
DE19508104C2 (de) 2000-05-25

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