EP1497540A1 - Verfahren zur steuerung und/oder regelung eines k hlsystems einer brennkraftmaschine eines kraftfahrzeugs - Google Patents
Verfahren zur steuerung und/oder regelung eines k hlsystems einer brennkraftmaschine eines kraftfahrzeugsInfo
- Publication number
- EP1497540A1 EP1497540A1 EP03746236A EP03746236A EP1497540A1 EP 1497540 A1 EP1497540 A1 EP 1497540A1 EP 03746236 A EP03746236 A EP 03746236A EP 03746236 A EP03746236 A EP 03746236A EP 1497540 A1 EP1497540 A1 EP 1497540A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- internal combustion
- combustion engine
- branch
- cooling system
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 48
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 19
- 230000001276 controlling effect Effects 0.000 title claims abstract description 8
- 239000002826 coolant Substances 0.000 claims abstract description 100
- 230000033228 biological regulation Effects 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000006870 function Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
- F01P7/167—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
-
- 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
-
- 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
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- 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
- F01P2025/36—Heat exchanger mixed 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
- F01P2025/52—Heat exchanger 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
- F01P2060/08—Cabin heater
Definitions
- the invention relates to a method for controlling and / or regulating a cooling system of an internal combustion engine of a motor vehicle, in which a coolant is circulated by a coolant pump and in which the coolant flows outside the internal combustion engine at least through a cooler branch and through a bypass branch.
- the invention further relates to a control and / or regulation of a cooling system of an internal combustion engine of a motor vehicle, with a coolant pump for circulating a coolant and with at least one cooler branch and a bypass branch through which coolant can flow outside the internal combustion engine.
- a cooling circuit for an internal combustion engine of a motor vehicle includes in the
- a heat source to be cooled (the internal combustion engine), which is cooled by means of a coolant by free or forced convection.
- the temperature difference above the heat source depends on the heat input and the size of the coolant flow, while the absolute temperature of the coolant is determined by the heat input from the heat source, the heat dissipation via coolers in the circuit and the heat capacities of the materials.
- mechanical water pumps are used in motor cooling systems of motor vehicles, which are driven by the crankshaft of the engine via V-belts.
- the pumps are dimensioned so that even in the most critical operating conditions, For example, when driving uphill at high speed, high load and low vehicle speed, there is no impermissibly high engine temperature or temperature difference above the engine.
- the mixing ratio between the bypass branch and the cooler branch is set by an expansion-operated thermostatic valve depending on the coolant temperature.
- the thermostatic valve is dimensioned in such a way that there is no impermissibly high coolant temperature.
- a cooling system for an internal combustion engine of a motor vehicle has become known, in which the pump is designed as a mechanically driven coolant pump.
- the author proposes to throttle the coolant flow of the coolant pump.
- Two different versions are proposed for this.
- the author suggests that a throttle plate be inserted in the bypass branch of the cooling system.
- the author suggests installing a throttle valve directly at the pump outlet.
- the coolant flow can be can be regulated by branch, while in the second alternative the total coolant flow of the cooling system can be regulated.
- the invention has for its object to provide a flexible control and / or regulation of the coolant flows in a cooling system of an internal combustion engine of a motor vehicle.
- the object is achieved by a method for controlling and / or regulating a
- Cooling system of an internal combustion engine of a motor vehicle in which a coolant is circulated by a coolant pump, in which the coolant flows outside of the internal combustion engine at least through a cooler branch and through a bypass branch and in which control means and / or regulating means throttling a coolant flow through the cooler branch and of a coolant flow through the bypass branch is carried out independently of one another.
- the coolant flows can be specified particularly flexibly in the method according to the invention.
- One measure provides that a desired temperature of the coolant is set by means of a predeterminable activation of the control and / or regulating means.
- the method according to the invention is used to set a coolant target temperature in a particularly flexible manner.
- a predeterminable total coolant flow is set by means of the control and / or regulating means.
- the method according to the invention also makes it possible for a predeterminable mixing ratio of the coolant flows through the cooler and bypass branch to be set independently of the boundary condition of the predetermined total coolant flow by means of the control and / or regulating means. In other words, it is possible to simultaneously set a specific total coolant flow and a mixing ratio of the coolant flows between the cooler and the bypass branches. (The mixing ratio is the manipulated variable for motor temperature control).
- the object is further achieved by a control and / or regulation of a cooling system of an internal combustion engine of a motor vehicle, with a coolant pump for
- control and / or regulation according to the invention has the same advantages as the method according to the invention.
- FIG. 1 shows a cooling system according to the prior art
- Figure 2 shows a cooling system according to the invention
- Figure 3a shows a first embodiment of a method according to the invention
- Figure 3b shows the same exemplary embodiment in a different representation
- Figure 4 shows a hydraulic network according to the invention
- FIG. 5 shows an illustration for determining the desired hydraulic resistance in accordance with the invention.
- the control of the coolant flow (volume flow) and the temperature level in a cooling system of the internal combustion engine is also possible with a conventional mechanical water pump if the bypass and the cooler branches are decoupled from one another can be throttled.
- the throttling of the cooler branch and the bypass branch can be adjusted independently of one another to allow the mixing ratio of the coolant flows through the cooler branch and the bypass branch to be set flexibly.
- the coolant flow can be adjusted despite the operating point of the mechanical water pump, which is determined by the speed of the internal combustion engine, by changing the total hydraulic resistance of the system.
- the throttle valves are set in such a way that the desired mixing ratio between the cooler and the bypass branch as well as the desired total hydraulic resistance is set in the system, from which a desired total coolant flow of the cooling system results.
- a prerequisite for carrying out the method according to the invention is knowledge of the hydraulic resistances of the cooling circuit components and knowledge of the pump characteristic of the mechanical water pump.
- FIG. 1 shows an example of a conventional cooling system.
- an internal combustion engine 1 has a coolant flowing through it.
- the coolant flows out of the internal combustion engine 1 via a line 2 and flows back into the internal combustion engine 1 via a three-way cooler valve 3, a bypass branch 4, a coolant pump 5 and a line 6.
- part of the coolant flows, starting from the Three-way cooler valve 3, via a line 7 to a cooler 8, from there via a line 9 and also via the coolant pump 5 and line 6 back to the internal combustion engine 1.
- the coolant leaves the internal combustion engine 1 via a line 10 and flows from there via a heater valve 11, a line 12, a heating heat exchanger 13, a line 14, the coolant pump 5 and line 6 back to the internal combustion engine 1.
- the line 10 , the heating valve 11, the line 12, the heating heat exchanger 13 and the line 14 form a heating branch.
- FIG. 1 also shows three temperature sensors which record the temperatures at specific points in the cooling system. These are the temperature sensor 15 that the temperature sensor 15 that the temperature sensor 15 that the temperature sensor
- the temperature sensor 16 which detects the temperature in line 6 and the temperature sensor 17, which detects the temperature in line 9.
- the temperature sensor 15 thus detects the temperature at an output of the internal combustion engine 1.
- the temperature sensor 16 thus detects the temperature at an input of the Internal combustion engine 1.
- the temperature sensor 17 thus detects the temperature of the coolant at an outlet of the radiator fan system 8.
- FIG. 2 shows a cooling system according to the invention.
- Those parts which correspond to the parts shown in FIG. 1 are each provided with the same reference numerals, and only the difference from FIG. 1 is discussed below.
- the three-way cooler valve 3 shown there is replaced by two separate valves 3 a and 3 b.
- a cooler valve 3 a is inserted into line 7, whereby line 7 is divided into two sub-lines 7 a and 7 b.
- a bypass valve 3 b was used, whereby the line 4 is divided into the parts 4a and 4b.
- the cooler valve 3, the sub-lines 7a, 7b, the cooler 8 and the line 9 form a cooler branch.
- the bypass valve 3 and the sub-lines 4a, 4b form a bypass branch.
- the target mixing ratio and the total target coolant flow can be set. If necessary, it must be assumed that all other branches that short-circuit the coolant pump 5 can also be disconnected, such as the heating branch 10-14. On the determination of the target mixing ratio between the cooler branch 3, 7a, 7b, 8, 9 and the bypass branch 3b, 4a, 4b and on the determination of the
- FIG. 3 a shows a first exemplary embodiment of the method according to the invention. This shows schematically how the corresponding positions of the two valves 3a and 3b according to FIG. 2 are determined from the target mixing ratio and the total target coolant flow.
- the operating point of the coolant pump 5 is determined as a function of the speed n of the internal combustion engine 1 and the desired hydraulic system resistance R is determined as a function of the total target coolant flow Vp by means of a first map 31.
- This desired hydraulic system resistance R and a desired mixing ratio MV are the inputs of the second and third characteristic Fields 32, 33.
- the cooler valve 3a is activated from the second characteristic diagram 32 and the bypass valve 3b from the third characteristic diagram 33. Accordingly, signals are obtained from the two characteristic diagrams 32, 33, which correspond to the desired positions of the valves 3a, 3b.
- valves 3 a and 3 b The control of the valves 3 a and 3 b according to the invention is thus achieved by the corresponding connection of the three characteristic diagrams 31, 32, 33.
- two three-dimensional maps can be used instead of the three two-dimensional maps 31, 32, 33.
- Figure 3b shows the same embodiment in a different representation.
- a first step 34 the input variables setpoint mixing ratio MV, total setpoint coolant flow Vp and speed n of internal combustion engine 1 are recorded. Based on these input data, the total hydraulic resistance R of the cooling system is determined in a step 35 by means of the total target coolant flow Vp and the speed n.
- step 36 This total hydraulic resistance R is transmitted to step 36, in which, based on the target mixing ratio MV and the total target coolant flow Vp, control variables for the cooler valve 3a and the bypass valve 3b are determined.
- step 37 the cooler valve 3a and the bypass valve 3b are finally activated accordingly.
- the first characteristic diagram 31 for determining the desired hydraulic resistance R and optionally the second and third characteristic diagrams 32, 33 can be generated automatically when the internal combustion engine is applied.
- the characteristic diagram of the coolant pump 5 must be known, which specifies the pressure difference over the pump dependency of the coolant flow and the pump or internal combustion engine speed.
- the hydraulic resistances of the components should be known if necessary. In the case of the pump map, a hydraulic resistance can clearly be found for each pair of data from the coolant flow and speed.
- FIG. 4 An example of such a hydraulic network according to the invention is shown in FIG. 4.
- the individual resistances of the components add up to the total resistance analogously to an electrical circuit. This results in the system characteristic.
- the desired total coolant flow of the cooling system through the coolant pump 5 then results from the intersection of the pump characteristic curve with the system characteristic curve.
- the hydraulic resistors 44, 45 of the bypass valve 3b and the remaining bypass branch 4a, 4b are connected in series. This series connection is in turn connected in parallel to the series connection of hydraulic resistor 46 of cooler valve 3 a and hydraulic resistor 47 of the remaining cooler branch 7a, 7, 8, 9.
- Figure 5 shows characteristic curves for determining the desired hydraulic resistance.
- 5 shows coolant flows Vp on the horizontal axis, while pressure differences dp are shown on the vertical axis. Pump characteristics 51, 52, 53 are shown for the speeds nl, n2 and n3 (nl>n2> n3).
- a system characteristic curve 54 which (in the case of turbulent flow) results from the multiplication of the hydraulic resistance R by the square of the coolant flow Vp.
- the system characteristic curve 54 thus represents a parabola, the pressure difference dp being a function of the square of the coolant flow Vp, the square of the coolant flow Vp being linked to the hydraulic resistance R as a factor.
- the slope of the system characteristic 54 thus becomes smaller and ultimately results in a system-related minimum hydraulic resistance R sys min, the dependence on the coolant flow Vp of which is given the reference number 55. If, on the other hand, the hydraulic resistance R increases, the system characteristic 54 increases, and the system characteristic 54 would shift further in the direction of the vertical axis. Knowing the current speed n of the internal combustion engine 1 and a desired total coolant flow Vp, it is thus possible to determine the desired system characteristic from the intersection of the coolant flow Vp sought with the corresponding pump characteristic 51-53, from which the sought hydraulic resistance R can be determined. For example, in the illustration according to FIG.
- intersection points 56, 57 and 58 are shown for the coolant flows Vpl, Vp2, Vp3 with the corresponding pump characteristic curve 51-53.
- the system characteristic curve 54 results from these intersection points 56-58, as a result of which the sought hydraulic resistance R can be inferred.
- the method according to the invention shown can be integrated, for example, in a control unit of a motor vehicle, which additionally takes on the task of controlling internal combustion engine 1, for example.
- the functional relationships shown can include e.g. B. can be represented by corresponding mathematical functions, a multi-dimensional map or by several maps in the engine control unit. All in all, there is a particularly flexible and exact possibility of independently controlling coolant flows Vp and mixing ratios between cooler branch 3a, 7a, 7b, 8, 9 and bypass branch 3b, 4a, 4b, which enables simple, possibly computer-aided or automated applicability.
- the for the application The required data are easy to measure, but should also be known or made known as part of the cooling system dimensioning from the vehicle manufacturer or from the component supplier.
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)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10216646 | 2002-04-15 | ||
| DE10216646 | 2002-04-15 | ||
| DE10316017 | 2003-04-07 | ||
| DE2003116017 DE10316017A1 (de) | 2003-04-07 | 2003-04-07 | Verfahren zur Steuerung und/oder Regelung eines Kühlsystems einer Brennkraftmaschine eines Kraftfahrzeugs |
| PCT/DE2003/001228 WO2003087552A1 (de) | 2002-04-15 | 2003-04-11 | Verfahren zur steuerung und/oder regelung eines kühlsystems einer brennkraftmaschine eines kraftfahrzeugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1497540A1 true EP1497540A1 (de) | 2005-01-19 |
| EP1497540B1 EP1497540B1 (de) | 2008-10-01 |
Family
ID=29251760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03746236A Expired - Lifetime EP1497540B1 (de) | 2002-04-15 | 2003-04-11 | Verfahren zur steuerung und/oder regelung eines kühlsystems einer brennkraftmaschine eines kraftfahrzeugs |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1497540B1 (de) |
| DE (1) | DE50310574D1 (de) |
| WO (1) | WO2003087552A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2475079B (en) * | 2009-11-05 | 2015-02-18 | Ford Global Tech Llc | Cooling systems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4033261C2 (de) * | 1990-10-19 | 1995-06-08 | Freudenberg Carl Fa | Temperaturgesteuerter Kühlkreis einer Verbrennungskraftmaschine |
| US6178928B1 (en) * | 1998-06-17 | 2001-01-30 | Siemens Canada Limited | Internal combustion engine total cooling control system |
| FR2804721B1 (fr) * | 2000-02-03 | 2002-06-21 | Peugeot Citroen Automobiles Sa | Dispositif de refroidissement d'un moteur de vehicule automobile |
| JP4337207B2 (ja) * | 2000-02-10 | 2009-09-30 | 株式会社デンソー | 液冷式内燃機関の冷却装置 |
-
2003
- 2003-04-11 EP EP03746236A patent/EP1497540B1/de not_active Expired - Lifetime
- 2003-04-11 DE DE50310574T patent/DE50310574D1/de not_active Expired - Lifetime
- 2003-04-11 WO PCT/DE2003/001228 patent/WO2003087552A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03087552A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1497540B1 (de) | 2008-10-01 |
| DE50310574D1 (de) | 2008-11-13 |
| WO2003087552A1 (de) | 2003-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1509687B1 (de) | Verfahren zur wärmeregulierung einer brennkraftmaschine für fahrzeuge | |
| EP0744539B1 (de) | Kühlanlage mit einem elektrisch regelbarem Stellglied | |
| DE10359581B4 (de) | Verfahren zur Steuerung eines Fahrzeugmotorkühlsystems | |
| DE102019102235A1 (de) | System und verfahren zur motorkühlung | |
| DE19803653B4 (de) | Steuervorrichtung für Direkteinspritzungsmotoren | |
| DE10024034A1 (de) | Steuerung eines Automatikgetriebes | |
| DE112013003619T5 (de) | Wärme-Kaltstartsystem mit Multifunktionsventil | |
| EP1454039B1 (de) | Verfahren zur temperaturregelung eines motors | |
| DE60123587T2 (de) | Verfahren und einrichtung zur kühlung einer brennkraftmaschine eines kraftfahrzeugs | |
| DE10210586A1 (de) | Verfahren und Vorrichtung für einen Kühlventilatorsteueralgorithmus | |
| DE60217434T2 (de) | Steuerungssystem und Methode für eine Mehrzylinder-Brennkraftmaschine | |
| DE10260260A1 (de) | Maschinenkühlsystem | |
| DE68906971T2 (de) | Ruck-kontrollsystem fuer ein antriebssystem. | |
| DE19500648B4 (de) | Kühlanlage für einen Verbrennungsmotor eines Kraftfahrzeuges mit einem Thermostatventil | |
| WO2019149792A1 (de) | Verfahren zum regeln einer temperatur eines kühlmittels eines kühlmittelkreislaufs einer antriebseinheit auf einem prüfstand | |
| DE102015113200A1 (de) | Kühlmittelsteuersysteme und -verfahren, um ein sieden von kühlmittel zu vermeiden | |
| EP0744538A2 (de) | Kühlanlage mit elektrisch regelbarem Stellglied | |
| DE102015113209A1 (de) | Steuersysteme und-verfahren für eine kühlmittelpumpe zur gegendruckkompensation | |
| DE10316017A1 (de) | Verfahren zur Steuerung und/oder Regelung eines Kühlsystems einer Brennkraftmaschine eines Kraftfahrzeugs | |
| EP1497540B1 (de) | Verfahren zur steuerung und/oder regelung eines kühlsystems einer brennkraftmaschine eines kraftfahrzeugs | |
| DE102014108175B4 (de) | Kühlmittelsteuerungsverfahren für ein Fahrzeug zur Getriebetemperaturregelung | |
| DE3610962C1 (de) | Verfahren zum Regeln der Innenraumtemperatur,insbesondere eines Kraftfahrzeugs | |
| DE60123402T2 (de) | Verfahren und einrichtung zur kühlung einer brennkraftmaschine eines kraftfahrzeugs | |
| EP1523612B1 (de) | VERFAHREN UND VORRICHTUNG ZUR REGELUNG DER TEMPERATUR EINES KüHLMITTELS EINER BRENNKRAFTMASCHINE | |
| DE102016100041B4 (de) | Verfahren zur Steuerung eines Kühlmittelsystems eines Fahrzeugs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20041115 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
| 17Q | First examination report despatched |
Effective date: 20071102 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 50310574 Country of ref document: DE Date of ref document: 20081113 Kind code of ref document: P |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20090702 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140423 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20140429 Year of fee payment: 12 Ref country code: FR Payment date: 20140416 Year of fee payment: 12 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150411 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150411 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150411 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20151231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150430 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20160628 Year of fee payment: 14 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50310574 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171103 |