EP1934468A1 - Verfahren und system zum betreiben eines heizelements eines kraftfahrzeugs - Google Patents
Verfahren und system zum betreiben eines heizelements eines kraftfahrzeugsInfo
- Publication number
- EP1934468A1 EP1934468A1 EP06806758A EP06806758A EP1934468A1 EP 1934468 A1 EP1934468 A1 EP 1934468A1 EP 06806758 A EP06806758 A EP 06806758A EP 06806758 A EP06806758 A EP 06806758A EP 1934468 A1 EP1934468 A1 EP 1934468A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- sensor signals
- internal combustion
- combustion engine
- heating element
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 52
- 230000004913 activation Effects 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 230000002123 temporal effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
Definitions
- the present invention relates to a method for operating a heating element of a motor vehicle, in particular a Gluh.kerze a self-igniting internal combustion engine of the motor vehicle, in which the heating element is driven in response to a plurality of sensor signals.
- the present invention further relates to a system for
- Such methods and devices are known from the prior art and are used, for example, in self-igniting internal combustion engines to heat a combustion chamber as quickly as possible to a suitable operating temperature before starting the internal combustion engine.
- a sensor signal indicating the opening of a driver's door of the motor vehicle is evaluated in order to determine a start of a control of the heating element, so that heating of the combustion chamber can already be initiated with the opening of the door.
- After opening the driver's door to evaluate their closing or the signal of a sensor that detects that a person has taken place in the driver's seat.
- This object is inventively achieved in a method of the type mentioned in that depending on the sensor signals, a confidence value is determined which indicates a probability that the internal combustion engine is started within a predetermined time interval, and that the control of the heating element as a function of Confidence value.
- the determination of the confidence value according to the invention allows a flexible consideration of various sensor signals, for example by applicable and / or dynamically adaptable rules for forming the confidence value as a function of the sensor signals, so that in contrast to the conventional method in which fixed predefined states of individual sensor signals or fixed predefined links such sensor signals are evaluated in order to control the heating element, an improved, in particular more precise estimate is possible, whether a start of the sensor signals.
- FIG. 1 is a block diagram of an embodiment of the system according to the invention.
- FIG. 2 shows a flow chart of an embodiment of the method according to the invention.
- FIG. 1 schematically shows a self-igniting internal combustion engine 100 which has a heating element 10 embodied as a glow plug for heating a combustion chamber of the internal combustion engine 100 not shown in FIG.
- the heating element 10 is controlled according to the invention by a system realized in the control unit 30 controlling the internal combustion engine 100.
- the system is embodied, for example, in the form of a computer program which can run on a computing unit of the control unit 30 not shown in FIG.
- system according to the invention may be in the form of a separate control device (not shown), which may be in data communication with the
- Control unit 30 of the internal combustion engine 100 is.
- Such a data connection can be realized, for example, in the form of a CAN bus 150, via which the control unit 30 is also connected to other, not shown, control devices of the internal combustion engine 100 or of the motor vehicle.
- system according to the invention can also be provided separately in the control unit 30 or separately Circuit arrangement (not shown) for acting on the heating element 10 with a heating current, which is indicated in Figure 1 by the connection 50.
- control unit 30 is supplied with different sensor signals 20a, 20b,..., which are evaluated in accordance with the invention in the manner described below, in order to make a statement as to whether a start of the internal combustion engine 100 is imminent , And if necessary to control the heating element 10 depending on this statement.
- a confidence value is determined which indicates a probability that the
- Internal combustion engine 100 is started within a predetermined time interval.
- the confidence value can be achieved, for example, by summation of preferably applicable numerical values, wherein the numerical values in each case correspond to one of the numerical values
- Sensor signals 20a, 20b, .. are assigned to express a meaning of the respective sensor signal (20a, 20b, ..) for the possibility of an imminent start of the internal combustion engine 100. That is to say, the confidence value represents, mathematically speaking, a sum of the corresponding sensor signals 20a, 20b,..., Which are weighted with the respective numerical values and which are usually exclusively binary signals.
- a sensor signal indicating the opening of a driver's seat may be assigned a higher numerical value than a sensor signal indicating the opening of a trunk, etc.
- the respective numerical value or weighting factor which is assigned to a specific sensor signal 20a, 20b, .., can be calculated as a function of the time which has elapsed between the respective sensor signal entry and a preceding sensor signal entry. That is, the method step 200 of FIG. 2 is divided into a defined but applicable sequence of sensor signals. It is also conceivable, for example, to weight the relevant numerical value as a function of a time duration which lies between a first occurrence of a sensor signal entry such as, for example, unlocking the vehicle door and the occurrence of a subsequent sensor signal entry corresponding to the numerical value.
- the present invention allows a more precise statement about the possibility of an imminent start of the internal combustion engine 100.
- the confidence value according to the present exemplary embodiment of the invention is compared with a predefinable threshold value. This comparison is made in step 210.
- the inventive value 200 can be used to determine the confidence value at an early stage. In particular, prior to actuation of an ignition lock of the motor vehicle, be closed to an imminent start of the internal combustion engine 100, so that when starting the internal combustion engine 100 no waiting time is created by an unnecessarily late heating of the combustion chamber.
- step 210 shows that the confidence value is smaller than the threshold value, no activation of the heating element 10 (FIG. 1) is undertaken.
- a storage 230 of the instantaneous sensor signals 20a, 20b, .. or the respective states of the sensor signals 20a, 20b, .. and of the confidence value determined therefrom and the information whether the internal combustion engine 100 has actually been started or not is possible, and particularly advantageous, for example, the rules for the formation of the confidence value or the threshold value, with the confidence value is compared in step 210, be adjusted depending on such evaluation.
- one or more links are specified for the sensor signals 20a, 20b,..., And the confidence value is determined as a function of a result of the link or the link
- Links formed or changed in comparison to the purely additive formation of the confidence value from the numerical values of the respective sensor signals 20a, 20b, .., it is possible in an especially advantageous manner to have necessary conditions or states of individual sensor signals 20a, 20b, .. in the formation of the confidence value with a particularly large weight to take into account.
- a first sensor signal which signals an opening of the driver's cab of the motor vehicle
- a second sensor signal which signals a closing of the driver's door by a logical AND connection
- Sensor signals are assigned a negative numerical value, when a combination of the sensor signals corresponding to the combination reduces the likelihood of a future start of the internal combustion engine 100.
- a sensor signal indicative of opening the driver's door may be ANDed with a sensor signal indicative of the opening of the trunk, and with a true result of this ANDing, the confidence value is reduced by a predeterminable numerical value.
- a door of the motor vehicle and / or the application of a seat of the Motor vehicle, in particular a driver's seat, with a weight and / or gripping a steering wheel of the motor vehicle by a person and / or the presence of a person in an interior and / or Betatigen an ignition of the motor vehicle and / or Betatigen a brake pedal of the motor vehicle and or indicate the actuation of a starter or automatic start of the motor vehicle.
- the aforementioned applying a seat of the motor vehicle with a weight force can be determined for example via an airbag control unit, which is in data communication with the control unit 30, for example via the CAN bus 150.
- the gripping of the steering wheel by a person is, for example via a capacitive tap a
- Steering wheel heater detectable, with a data exchange with a corresponding Steuergerat the steering wheel heating can also be done via the CAN bus 150.
- the detection of persons in the interior of the motor vehicle can take place, for example, via so-called keyless entry systems or an immobilizer.
- the actuation of a brake pedal of the motor vehicle can also be determined in a conventional manner via the CAN bus 150.
- a particularly expedient combination of sensor signals 20a, 20b, .. according to a further embodiment of the present invention is given below:
- the formation of the confidence value in dependence on a release of a driver's door of the motor vehicle and an opening of the driver's door is made. If the driver finally sits down on the driver's seat, which can be recognized, for example, via an airbag control unit as described above, the confidence value is further increased by a corresponding numerical value. According to the invention, a comparable increase in the confidence value can also be achieved by the detection of a person in the vehicle interior by means of a keyless entry system or an immobilizer.
- the confidence value is incrementally increased in accordance with the numerical values assigned to the sensor signals, so that a correspondingly increasing certainty of the assessment of the possibility of an imminent start of the internal combustion engine 100 is made possible.
- the inventive determination or use of the confidence value for assessing the probability of an imminent start of the internal combustion engine 100 allows an evaluation that can be adapted to the availability of different sensor signals 20a, 20b,... as well as a change in the rules for forming the confidence value, eg a change in the weighting of individual sensor signals 20a, 20b,
- Links which also dynamic or operating time of the system adaptation to an individual behavior of a driver possible and thus a further increase in precision can be achieved. Accordingly, when using the method according to the invention less unnecessary heating processes occur, whereby the heating element 10 is spared.
- Another advantage of the invention is that the precise early detection of an imminent start of the internal combustion engine 100 can be used cost-effective, designed for operation with a supply voltage of 11 volts Gluh.kerzen having no Schnellstartmogrete.
- the inventive method is not limited to the application in connection with Gluh.kerzen; it is also conceivable to operate other heating elements of a motor vehicle as a function of a confidence value determined according to the invention, for example heating elements for fuel systems or catalysts or the like.
- control of systems other than heating systems of a motor vehicle can be controlled with the present method, in which an activation or deactivation before a start of the internal combustion engine is important.
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)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005045231A DE102005045231A1 (de) | 2005-09-22 | 2005-09-22 | Verfahren und System zum Betreiben eines Heizelements eines Kraftfahrzeugs |
| PCT/EP2006/066063 WO2007033906A1 (de) | 2005-09-22 | 2006-09-06 | Verfahren und system zum betreiben eines heizelements eines kraftfahrzeugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1934468A1 true EP1934468A1 (de) | 2008-06-25 |
| EP1934468B1 EP1934468B1 (de) | 2009-12-02 |
Family
ID=37420931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06806758A Not-in-force EP1934468B1 (de) | 2005-09-22 | 2006-09-06 | Verfahren und system zum betreiben eines heizelements eines kraftfahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1934468B1 (de) |
| AT (1) | ATE450709T1 (de) |
| DE (2) | DE102005045231A1 (de) |
| ES (1) | ES2336370T3 (de) |
| WO (1) | WO2007033906A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2466275A (en) * | 2008-12-18 | 2010-06-23 | Gm Global Tech Operations Inc | Controlling Diesel engine glow plugs |
| DE102010038337A1 (de) | 2010-07-23 | 2012-01-26 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Steuerung des Glühverhaltens einer Glühstiftkerze eines Verbrennungsmotors |
| EP2489864B1 (de) * | 2011-02-18 | 2021-07-14 | Fiat Group Automobiles S.p.A. | Dieselkraftstoffeinspritzsystem in einem mit dieselmotor ausgestatteten kraftfahrzeug |
| FR2979603B1 (fr) * | 2011-09-06 | 2013-10-04 | Peugeot Citroen Automobiles Sa | Strategie de preparation de demarrage d'un moteur diesel |
| FR2979604B1 (fr) * | 2011-09-06 | 2013-10-04 | Peugeot Citroen Automobiles Sa | Strategie d'arbitrage de demarrage d'un moteur diesel |
| FR3002984B1 (fr) * | 2013-03-05 | 2015-04-03 | Peugeot Citroen Automobiles Sa | Dispositif de mise en pression de circuit d'huile de lubrification de moteur thermique de vehicule automobile |
| DE102014001381A1 (de) | 2014-02-01 | 2015-08-06 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Heizvorrichtung für eine Antriebseinheit in einem Kraftfahrzeug und Verfahren zur Steuerung einer solchen Heizvorrichtung |
| DE102016201559A1 (de) * | 2016-02-02 | 2017-08-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Vermessen eines zu testenden Systems |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835273A (ja) * | 1981-08-27 | 1983-03-01 | Nippon Denso Co Ltd | 機関予熱制御方法 |
| DE4121520C2 (de) * | 1990-07-07 | 2003-02-13 | Volkswagen Ag | Schaltungsanordnung zum Vorwärmen von Zündeinrichtungen nach Art von Glühkerzen für eine ein Kraftfahrzeug antreibende Brennkraftmaschine |
| DE4223954C1 (de) * | 1992-07-21 | 1994-01-13 | Bosch Gmbh Robert | Vorrichtung zum Steuern eines Heizelements in einem Kraftfahrzeug |
| DE19519713A1 (de) * | 1995-05-30 | 1996-12-05 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Steuern eines Heizelements in einem Kraftfahrzeug |
| DE19906950C2 (de) * | 1999-02-19 | 2002-10-24 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Ansteuerung von wenigstens einem Heizelement |
-
2005
- 2005-09-22 DE DE102005045231A patent/DE102005045231A1/de not_active Withdrawn
-
2006
- 2006-09-06 EP EP06806758A patent/EP1934468B1/de not_active Not-in-force
- 2006-09-06 WO PCT/EP2006/066063 patent/WO2007033906A1/de not_active Ceased
- 2006-09-06 DE DE502006005544T patent/DE502006005544D1/de active Active
- 2006-09-06 ES ES06806758T patent/ES2336370T3/es active Active
- 2006-09-06 AT AT06806758T patent/ATE450709T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007033906A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2336370T3 (es) | 2010-04-12 |
| DE502006005544D1 (de) | 2010-01-14 |
| DE102005045231A1 (de) | 2007-03-29 |
| ATE450709T1 (de) | 2009-12-15 |
| WO2007033906A1 (de) | 2007-03-29 |
| EP1934468B1 (de) | 2009-12-02 |
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