EP1280987A1 - Abtastverfahren für drucksensoren bei druckbasierter füllungserfassung - Google Patents
Abtastverfahren für drucksensoren bei druckbasierter füllungserfassungInfo
- Publication number
- EP1280987A1 EP1280987A1 EP01936012A EP01936012A EP1280987A1 EP 1280987 A1 EP1280987 A1 EP 1280987A1 EP 01936012 A EP01936012 A EP 01936012A EP 01936012 A EP01936012 A EP 01936012A EP 1280987 A1 EP1280987 A1 EP 1280987A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- combustion engine
- internal combustion
- cylinder
- scanning
- 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
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 title description 3
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 230000010349 pulsation Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000012935 Averaging Methods 0.000 description 14
- 238000005070 sampling Methods 0.000 description 9
- 239000000446 fuel Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/14—Timing of measurement, e.g. synchronisation of measurements to the engine cycle
Definitions
- the pressure sensor is sampled every 1 ms, after which the sampled values are summed up over a segment.
- the sum of the samples is divided by the number of samples, so that an arithmetic mean value is obtained which allows a charge calculation based on the respective partial pressures of residual gas and fresh gas of the cylinder of a ner internal combustion engine.
- a pressure sensor that senses a pressure signal is sampled continuously every 1 ms and then averaging between two ignitions (segment). The values obtained serve to determine the total partial pressure, consisting of the residual gas partial pressure and the fresh gas partial pressure.
- a determination of the total partial pressure and the filling determination based thereon on the respective cylinders of an internal combustion engine delivers precise values only in the case of a symmetrical pulsation amplitude in order to be able to carry out a filling determination calculated indirectly via the intake manifold pressure.
- the pulsation forms occurring on the internal combustion engine at the time the inlet valve closes can be extremely asymmetrical; therefore arithmetic averaging to determine the fresh air cylinder charge can provide imprecise results.
- a sampling every 1 ms is much more sensitive due to sporadic interferences than averaging.
- These disturbances can be caused, for example, by electromagnetic influences (EMC).
- EMC electromagnetic influences
- Such an electrical interference pulse can also occur, for example, during a cold start and totally falsify the measurement result of the pressure sensor, so that an inaccurate charge calculation is carried out for the cylinders of the internal combustion engine. This results in poor cold start behavior, as well as a strong but avoidable increase in emissions during the start phase, which places a considerable burden on the environment, but would be avoidable.
- a sampling of the pressure sensor every 1 ms can lead to incorrect pressure information for the fresh gas filling calculation due to interference peaks, e.g. during a cold start or due to EMC influences, since the partial pressures determined are inaccurate and do not correctly reflect the actual conditions.
- the total partial pressure on the respective cylinders of an internal combustion engine can be measured several times in succession shortly before the “inlet valve closes” (ES) time.
- a sampling method is advantageously proposed in which the sampling values are divided by the number of samples and so that a representative mean value pressure reflecting the actual circumstances is available for further processing.
- the fresh gas filling in the cylinder can be calculated ) corresponds to the intake manifold pressure determined in the intake manifold of the internal combustion engine to the total partial pressure prevailing in the cylinder. Since a large number of scans are made in quick succession during the above time, Possibly recorded incorrect scans, caused by EMN or other spikes during the cold start phase, are averaged out, so that no inaccurate, because falsified, pressure information is stored in the
- Another advantage associated with the solution according to the invention is the fact that in engines with a large ratio of cylinder / intake manifold volume, i.e. with an extremely small intake manifold, the damping effect of the intake manifold with respect to the intake air pulsations is very strongly reduced in its effect. A fresh air calculation via the intake manifold pressure would not be possible in this case, since the pressure signal has pulsations that are too large in a stationary manner.
- the signal curve of the pressure sensor signal 1 is plotted over the time axis 2 in [mV]. Time axis 2 is scaled in [ms].
- the amplitude 3 of the pressure signal can easily be read from the representation of the pressure sensor signal 1 in FIG. 1. From the course of the pressure signal 1 it can be seen that the pulsation form of the pressure signal 1 over the time axis, i.e. the crankshaft angle is extremely asymmetrical.
- Fig. 2 shows the course of the pressure signal, which is continuously sampled in ms-cycle and the relationship to the crankshaft.
- the course of the pressure signal is plotted over the time axis 2 in the upper half of FIG. 2;
- the course 1.2 of the ms signal and the reference to the crankshaft are shown in the lower half of FIG. 2.
- the horizontal line representing the course of the crankshaft revolution is initially provided with a reference mark 5 (GRD value) for a first cylinder of an internal combustion engine. From this value, which corresponds to a specific angular position of the crankshaft, a software counter 4 implemented in the control electronics counts the crankshaft angle at which the intake valve of the relevant cylinder of the internal combustion engine closes. This point in time is identified by reference number 9. During the period from the reference mark 5 to When the inlet valve of the relevant cylinder of the internal combustion engine closes, the first cylinder of an internal combustion engine has an ignition - the compressed one
- the inlet valve is about to go into its closed state.
- the scanning sequence 10 which sweeps over the scanning area 11 at the time 9 of the closing of the intake valve - for example via a microcontroller with a crystal frequency of 24 MHz - and enables scanning sequences 10 of individual pulses 11 which are only 160 ⁇ s apart. Compared to a sampling that takes place every 1 ms, as was previously the case with the
- sampling intervals of 160 ⁇ s are possible, so that the pressure signal per cylinder of the internal combustion engine can be sampled about 6 times more frequently than in previous applications.
- the scanning signals can be weighted differently when calculating and evaluating them.
- the pressure signals at time 9, ie when the intake valve closes can be weighted differently when calculating the charge determination of the cylinder in question; the signals which are very early in relation to the closing time 9 of the intake valve or those signals which are late can be weighted little compared to those when averaging in the microcontroller Signals that are obtained immediately before the intake valve actually closes.
- These signals correspond with very high accuracy to the actual total partial pressure in the corresponding cylinder of the internal combustion engine. These signals can then be taken more into account when determining the actual total partial pressure in the cylinder of the internal combustion engine when averaging.
- the compressed fuel / air mixture is ignited in a further cylinder, namely cylinder 2 of the internal combustion engine, which is identified by reference numeral 13.
- the ignition point is a few crankshaft angle degrees before the top dead center of the cylinder 2 of the internal combustion engine, designated by reference numeral 14 in FIG. 3.
- the summation unit 17 can be reset to the value 0 via a reset element 16.
- the number of determined individual scans 12 is recorded within the scan sequence 10 via an electronically implemented counting device 15.
- the counting device 15 is also provided with a reset element 18.
- the signals Both the counting device 15 and the summation unit 17 are transmitted to an averaging stage 19, where averaging is either weighted or arithmetically. In the case of weighted averaging, those signals which are in the vicinity of the actual closing point of the intake valve are taken into account more than those signals which are further away from the actual closing point of the intake valve.
- the pressure values obtained are divided by the number of individual pulses 12 determined.
- an averaging can take place, which, however, is based on a higher number of pressure signals reflecting the actual total partial pressure ratio on the cylinder. Therefore, the mean values obtained in this way are much more meaningful and reflect an image of the conditions actually present on the respective cylinder whose fresh air filling is to be calculated.
- the sampling frequency has been significantly increased precisely at the critical point in time, ie when the intake valve of the respective cylinder of the internal combustion engine closes 9.
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)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10021647A DE10021647A1 (de) | 2000-05-04 | 2000-05-04 | Abtastverfahren für Drucksensoren bei druckbasierter Füllungserfassung |
| DE10021647 | 2000-05-04 | ||
| PCT/DE2001/001635 WO2001083968A1 (de) | 2000-05-04 | 2001-05-02 | Abtastverfahren für drucksensoren bei druckbasierter füllungserfassung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1280987A1 true EP1280987A1 (de) | 2003-02-05 |
| EP1280987B1 EP1280987B1 (de) | 2005-12-28 |
Family
ID=7640714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01936012A Expired - Lifetime EP1280987B1 (de) | 2000-05-04 | 2001-05-02 | Abtastverfahren für drucksensoren bei druckbasierter füllungserfassung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6675638B2 (de) |
| EP (1) | EP1280987B1 (de) |
| JP (1) | JP2003532019A (de) |
| DE (2) | DE10021647A1 (de) |
| WO (1) | WO2001083968A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4148238B2 (ja) * | 2005-05-19 | 2008-09-10 | 株式会社デンソー | コモンレール式燃料噴射システム |
| US7606655B2 (en) * | 2006-09-29 | 2009-10-20 | Delphi Technologies, Inc. | Cylinder-pressure-based electronic engine controller and method |
| GB2469826B (en) * | 2009-04-29 | 2012-11-21 | Gm Global Tech Operations Inc | Method for estimating the pressure prevailing in an intake manifold of an internal combustion engine and method of controlling an internal combustion engine |
| US9169784B2 (en) | 2013-02-08 | 2015-10-27 | Cummins Inc. | Processing system and method for calculating pressure decreases due to injection events in a high-pressure fuel system |
| US9551631B2 (en) | 2013-02-08 | 2017-01-24 | Cummins Inc. | System and method for adapting to a variable fuel delivery cutout delay in a fuel system of an internal combustion engine |
| US9903306B2 (en) | 2013-02-08 | 2018-02-27 | Cummins Inc. | System and method for acquiring pressure data from a fuel accumulator of an internal combustion engine |
| US9267460B2 (en) | 2013-07-19 | 2016-02-23 | Cummins Inc. | System and method for estimating high-pressure fuel leakage in a common rail fuel system |
| US9897504B2 (en) | 2015-04-20 | 2018-02-20 | Infineon Technologies Ag | System and method for a MEMS sensor |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02196153A (ja) * | 1989-01-20 | 1990-08-02 | Mitsubishi Electric Corp | エンジンの点火時期制御装置 |
| DE3917905A1 (de) * | 1989-06-01 | 1990-12-06 | Siemens Ag | Verfahren zum optimieren des betriebs einer fremdgezuendeten kolbenbrennkraftmaschine, insbesondere eines otto-motors |
| DE3918534A1 (de) * | 1989-06-07 | 1990-12-20 | Braun Melsungen Ag | Drucksensor fuer infusionsleitungen |
| CA2104144C (en) * | 1992-08-21 | 2004-01-06 | Jay C. Mccombie | Dual sensor misfire detection apparatus and method for an internal combustion engine |
| DE4341796A1 (de) | 1993-12-08 | 1995-09-14 | Bosch Gmbh Robert | Verfahren zur Regelung der Verbrennung im Brennraum einer Brennkraftmaschine |
| DE4441194A1 (de) * | 1994-11-18 | 1996-05-23 | Helmut Dr Baader | Drucksensor |
| DE69620670T2 (de) * | 1995-05-12 | 2002-08-14 | Yamaha Hatsudoki K.K., Iwata | Verfahren und Vorrichtung zur Steuerung des Betriebs einer Brennkraftmaschine |
| US5616834A (en) * | 1996-01-25 | 1997-04-01 | Motorola Inc. | Misfire detection dependent on intake air charge fluctuations |
| DE19756619B4 (de) * | 1997-04-01 | 2007-03-15 | Robert Bosch Gmbh | System zum Betreiben einer Brennkraftmaschine insbesondere für ein Kraftfahrzeug |
| DE19741820B4 (de) | 1997-09-23 | 2009-02-12 | Robert Bosch Gmbh | Verfahren zur Auswertung des Brennraumdruckverlaufs |
| US6138504A (en) * | 1998-06-04 | 2000-10-31 | Ford Global Technologies, Inc. | Air/fuel ratio control system |
| JP2000045823A (ja) * | 1998-07-28 | 2000-02-15 | Honda Motor Co Ltd | 内燃機関の制御方法 |
| DE19900738C1 (de) * | 1999-01-12 | 2000-06-15 | Daimler Chrysler Ag | Verfahren und Vorrichtung zur Bestimmung eines Brennraumdruckverlaufs bei einer Brennkraftmaschine |
-
2000
- 2000-05-04 DE DE10021647A patent/DE10021647A1/de not_active Ceased
-
2001
- 2001-05-02 DE DE50108551T patent/DE50108551D1/de not_active Expired - Lifetime
- 2001-05-02 EP EP01936012A patent/EP1280987B1/de not_active Expired - Lifetime
- 2001-05-02 WO PCT/DE2001/001635 patent/WO2001083968A1/de not_active Ceased
- 2001-05-02 JP JP2001580561A patent/JP2003532019A/ja active Pending
- 2001-05-02 US US10/030,644 patent/US6675638B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0183968A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020170345A1 (en) | 2002-11-21 |
| US6675638B2 (en) | 2004-01-13 |
| DE50108551D1 (de) | 2006-02-02 |
| JP2003532019A (ja) | 2003-10-28 |
| EP1280987B1 (de) | 2005-12-28 |
| WO2001083968A1 (de) | 2001-11-08 |
| DE10021647A1 (de) | 2001-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE4443517B4 (de) | Einrichtung zur Lasterfassung bei einer Brennkraftmaschine | |
| DE69803945T2 (de) | Verfahren zum aufspüren von fehlzündungen bei brennkraftmaschinen und system zur durchführung dieses verfahrens | |
| US5359883A (en) | Apparatus and method for analyzing events for an internal combustion engine | |
| EP1034416B1 (de) | Verfahren zur auswertung des brennraumdruckverlaufs | |
| EP1972780A1 (de) | Fahrzeugdiagnosesystem und -verfahren | |
| EP0269606B1 (de) | Verfahren und Einrichtung zur Prüfung einer Brennkraftmaschine | |
| DE102015120033A1 (de) | Aussetzererkennung mithilfe von Kurbelwellenschwingungen | |
| DE102012102767A1 (de) | Zustandsschätzung, Diagnose und Steuerung unter Verwenden einer äquivalenten Zeitabtastung | |
| DE4001362C2 (de) | ||
| US5132909A (en) | Apparatus for diagnosing individual cylinder performance by estimated instantaneous engine speeds | |
| EP1280987A1 (de) | Abtastverfahren für drucksensoren bei druckbasierter füllungserfassung | |
| EP1046026B1 (de) | Verfahren und vorrichtung zur bewertung von verbrennungsvorgängen an einer brennkraftmaschine | |
| DE10123022B4 (de) | Drehzahlerfassungsverfahren | |
| DE19941171B4 (de) | Verfahren zum Bestimmen des von einer Brennkraftmaschine aufgebrachten Moments | |
| DE4126182A1 (de) | Elektronische steuereinrichtung fuer die kraftstoffeinspritzung bei einem verbrennungsmotor | |
| CA1216672A (en) | Method of locating engine top dead center position | |
| DE602004009400T2 (de) | Verfahren zur Bestimmung von Drehzahlschwankungen eines Motors | |
| EP1801400A1 (de) | Vorrichtung und verfahren zum berechnen der arbeitslast eines motors | |
| EP0269607B1 (de) | Diagnoseverfahren für mehrzylindrige Brennkraftmaschinen und Einrichtung zur Durchführung des Verfahrens | |
| DE102005053024A1 (de) | Vorrichtung zum Erfassen des Verbrennungszustands eines Motors | |
| DE60019365T2 (de) | Vorrichtung zur Ermittlung des Kraftstoffeinspritzzeitpunkts für eine Dieselbrennkraftmaschine | |
| DE69425375T2 (de) | Erfassung von Fehlzündungen durch Beschleunigungen in einem Zyklus | |
| DE102017108995B3 (de) | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine mit einem spülenden Ladungswechsel | |
| DE102011051072A1 (de) | Kompensation von Fehlzündungen im Saugrohr für Motorräder | |
| EP0895089B1 (de) | Einrichtung zur Bestimmung der Drehzahl einer Brennkraftmaschine |
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: 20021204 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): DE FR IT |
|
| 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 IT |
|
| REF | Corresponds to: |
Ref document number: 50108551 Country of ref document: DE Date of ref document: 20060202 Kind code of ref document: P |
|
| ET | Fr: translation filed | ||
| 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: 20060929 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20070526 Year of fee payment: 7 |
|
| 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: 20080502 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140516 Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140724 Year of fee payment: 14 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50108551 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20160129 |
|
| 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: 20151201 |
|
| 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: 20150601 |