EP1242738A1 - Rundlaufregelung für dieselmotoren - Google Patents
Rundlaufregelung für dieselmotorenInfo
- Publication number
- EP1242738A1 EP1242738A1 EP01993755A EP01993755A EP1242738A1 EP 1242738 A1 EP1242738 A1 EP 1242738A1 EP 01993755 A EP01993755 A EP 01993755A EP 01993755 A EP01993755 A EP 01993755A EP 1242738 A1 EP1242738 A1 EP 1242738A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinders
- speed curve
- cylinder
- rotational speed
- crankshaft
- 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
Classifications
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
- F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
Definitions
- the invention relates to a method for concentricity control, as is known, for example, from DE 195 48 604 C1.
- the known method serves to determine differences in the torque contributions of individual cylinders of an internal combustion engine on the basis of the crankshaft speed curve. It is based on the knowledge that the rotational movement of the crankshaft is non-uniform under the effect of gas and mass forces.
- To determine the speed or torque component of a cylinder individual cylinders are specifically switched off during engine operation. By comparing the speed curve of the engine operated without cylinder deactivation, the torque share of each individual cylinder in the total engine torque can be shown in isolation using the speed signal.
- the injection quantity variations resulting from manufacturing tolerances are recognized and are to be compensated for by producing the same mean pressures in all cylinders by varying the injection quantity.
- the fuel supply of a cylinder can be switched off, which then works, for example, as a compressor.
- the fuel supply to the remaining, normally operating cylinders is changed in a suitable manner. It It should be possible to determine through experimentation and calculation how the torque of the cylinders should be distributed in order to achieve optimal suppression of the vibrations. In this way, determined data are kept available for certain operating cases, according to which the internal combustion engine is controlled.
- the injection quantities are obviously distributed among the individual cylinders in such a way that the vibrations of the 0.5th to 3rd orders are suppressed, since only they are responsible for noticeable vibrations in practice. However, the vibrations of the different orders obviously cannot always be suppressed equally.
- the appropriate fuel distribution appears to be related to the size of the vector responsible for the vibrations.
- a method for the cylinder selective control of a self-igniting internal combustion engine is also known.
- a measuring device is used to record the crankshaft rotation angle and to determine the instantaneous crankshaft speed.
- a control unit determines suitable parameters that enable cylinder-selective equality or a defined unequalization of the mean pressures in various operating areas of the internal combustion engine, the effect of component differences in the fuel supply and the combustion system on the combustion process being minimized.
- the deviations of the individual cylinders can add up so unfavorably that the effect is the same as if a cylinder failed completely.
- interruptions in operation occur due to faults in the injection system. Damaged intake or exhaust valves can result in loss of compression.
- Switching off cylinders also represents an operating case that changes the torsional vibration stress.
- the effect of the operating conditions deviating from normal operation on the excitation behavior of the motor is illustrated by a vector representation of the excitation forces. It is further stated that only the excitatory forces of the 0.5th, 1st and 1.5th order are of interest in intermittent operation.
- the exciting alternating torque is calculated from the vector sum according to the phase position of the harmonic.
- interventions on the engine e.g. B. are practically not feasible by changing the ignition pressure.
- the invention has for its object to represent a concentricity control especially for high-cylinder internal combustion engines.
- the cylinders are switched off one after the other and the speed recorded over the crank angle.
- the speed curve of the healthy intact engine that is, when all cylinders are working normally, is recorded.
- This can be a brand-new engine in normal operation, which has slight differences in the speed components of each cylinder due to tolerances, or an ideal engine, the cylinders of which are equal in terms of their shares in speed acceleration, for example, by using the method according to the invention.
- ideal means that before the reference values are recorded, for example by varying the injection quantities of individual cylinders, a setting is made in which the fluctuations in the speed contributions of the cylinders are minimized. This setting is retained in normal operation.
- Curve curve the spectrum of the speed curve R of a work cycle is formed.
- the Fourier coefficients of the low-frequency vibrations are used, namely preferably the harmonics of the 0.5th to 3rd order, which are processed into a line matrix.
- Injection quantities Cylinders that lie in the direction of the resulting R are corrected more with a positive or negative sign than orthogonal ones.
- the mathematical operation that can achieve the corresponding performance is the formation of the scalar product or the vectorial inproduct from the resultant R and the spectral impulse responses T.
- the required data are held in matrix form.
- the matrix multiplication of the impulse responses ⁇ with the vector of the spectral speed curve R gives values different from zero and leads to one Correction of the injection quantities if there is a runout deviation in normal operation.
- the correction values, which are standardized, are fed to a controller and the injection quantities ⁇ Q are determined, which can be positive or negative and accordingly correct the injection quantities determined by the engine controller for each injector of a cylinder.
- FIGS. 1 to 4. The invention is illustrated by means of the drawings with FIGS. 1 to 4.
- the figures show:
- Figure 1 A speed control loop with the elements necessary for torsional vibration analysis in a schematic representation
- Figure 2 The speed curve of the crankshaft over the angle for a working cycle of the engine
- Figure 3 A spectral representation of the impulse response T of a cylinder
- Figure 4 A pointer representation of the speed components of the cylinders in the 0.5th order for a six-cylinder engine, specifically for a healthy engine (Figure 4a), an engine with no injector (Figure 4b) and for an engine with corrected injection quantity ( 4c).
- Reference numeral 1 denotes a diesel engine
- the crankshaft not shown, is connected to a measuring wheel 2.
- the speed curve of the crankshaft can be recorded over the angle.
- a filter 4 and a filter 5 faults are masked out and the curve shape is averaged by comparing the recorded curve shapes over several work cycles.
- the speed curve of the crankshaft is continuously recorded over the angle in normal engine operation.
- the speed signal of a work cycle is shown by way of example in FIG. 2.
- the radius marked with r corresponds to the current speed at the angle ⁇ .
- the speed curve shows a deformation that occurs when a cylinder fails.
- the spectral speed curve is obtained with the resulting vectors R, to R n , the indices corresponding to the harmonics under consideration.
- the corresponding operation is carried out in the symbolically represented function block 7.
- Fourier decomposition vectors R are the Fourier coefficients. Preferably only the harmonic vibrations of the 0.5th to 3rd order are considered. With ideal concentricity, no resulting parts of the corresponding harmonics occur or are at least negligible. In reality, however, the resultant vector R is small, since the harmonic components are not evenly distributed over the circumference.
- This case is shown for an engine with six cylinders as an example for the harmonic of the 0.5th order in FIG. 4a. Each cylinder makes approximately the same contribution to the rotational acceleration, as the vector pointers ⁇ 1 to ⁇ 6 illustrate. In this case, the injection quantities determined on the basis of the predetermined target and actual speeds in the speed controller 9 and by the injection software 10 are not corrected by the injectors 11 assigned to each cylinder.
- the injection quantity must be corrected individually for each cylinder if, as shown in FIG. 4b, one is due to the low-frequency vibration components
- Resulting R is not equal to zero. In the corresponding case, it is assumed that a cylinder has failed and a harmonic of the 0.5th order occurs, which has the phase position shown with respect to the cylinders.
- the pulse proportion of each cylinder in the speed must be known.
- the corresponding speed-dependent data are kept ready in function block 8.
- the cylinders are switched off one after the other in a measuring run and the speed is recorded over the crank angle. By comparing the speed curve of the healthy engine, one obtains the difference between the two
- the vector pointers indicate the amount and phase of the corresponding harmonic.
- the impulse responses ⁇ are stored in matrix form for the mathematical processing.
- Correction factors for the injection quantities of the individual injectors are generated by forming the scalar in-product of the resulting vectors R with the impulse responses T. This takes place in the multiplication point 13.
- the scalar vector product has the effect that only the components of the resultant R lying in the direction of the impulse response vectors make a contribution to the correction factors, that is to say that collinear vectors are strongly corrected and orthogonal vectors are not corrected at all.
- the correction values are entered in the form of vector arrows for the individual injectors in FIG. 4c.
- the correction factors are converted by multiplication by a constant factor into injection quantities ⁇ Q for each injector, which can be positive or negative, and accordingly the injection quantity Q determined by the engine controller for each injector of a cylinder is corrected positively or negatively in a summation point 12.
- the calculation is based on the following equations:
- T spectral impulse responses
- K correction factors for the injection quantity By multiplying the scalar quantity K by the unit vector e, the impulse response is obtained K:
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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10055192A DE10055192C2 (de) | 2000-11-07 | 2000-11-07 | Rundlaufregelung für Dieselmotoren |
| DE10055192 | 2000-11-07 | ||
| PCT/EP2001/012697 WO2002038936A1 (de) | 2000-11-07 | 2001-11-02 | Rundlaufregelung für dieselmotoren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1242738A1 true EP1242738A1 (de) | 2002-09-25 |
| EP1242738B1 EP1242738B1 (de) | 2003-07-23 |
Family
ID=7662466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01993755A Expired - Lifetime EP1242738B1 (de) | 2000-11-07 | 2001-11-02 | Rundlaufregelung für dieselmotoren |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6820593B2 (de) |
| EP (1) | EP1242738B1 (de) |
| DE (2) | DE10055192C2 (de) |
| WO (1) | WO2002038936A1 (de) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE522658C2 (sv) * | 2002-06-28 | 2004-02-24 | Scania Cv Abp | Metod för att identifiera ett fel förknippat med en särskild cylinder i en flercylindrig förbränningsmotor och datorprogram för genomförande av metoden |
| DE10235665A1 (de) * | 2002-07-31 | 2004-02-12 | Conti Temic Microelectronic Gmbh | Regelung der Betriebsweise einer Brennkraftmaschine |
| DE10235105B4 (de) * | 2002-08-01 | 2015-02-26 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs |
| DE10302806B4 (de) * | 2003-01-24 | 2004-12-09 | Siemens Ag | Verfahren zur Berechnung von Druckschwankungen in einem Kraftstoffversorgungssystem einer mit Kraftstoff-Direkteinspritzung arbeitenden Brennkraftmaschine und zur Steuerung derer Einspritzventile |
| US7231994B2 (en) | 2003-11-24 | 2007-06-19 | Daimlerchrysler Corporation | Hybrid vehicle with integral generator for auxiliary loads |
| DE102004010412B4 (de) * | 2004-03-01 | 2018-03-15 | Robert Bosch Gmbh | Vorrichtung zum Betreiben einer Brennkraftmaschine |
| US7292933B2 (en) | 2004-11-15 | 2007-11-06 | Lotus Engineering, Inc. | Engine misfire detection |
| US7027910B1 (en) * | 2005-01-13 | 2006-04-11 | General Motors Corporation | Individual cylinder controller for four-cylinder engine |
| DE102005047829B3 (de) * | 2005-10-05 | 2007-05-03 | Universität Kassel | Zylindergleichstellung bei Hubkolbenmotoren durch Ausregeln der harmonischen Anteile der Kurbelwellendrehzahl |
| FI121150B (fi) * | 2005-11-30 | 2010-07-30 | Waertsilae Finland Oy | Mäntäpolttomoottorisysteemin laitteisto ja menetelmä tunnistamaan epäyhtenäinen sylinteriteho-osuus |
| DE102006056860A1 (de) * | 2006-12-01 | 2008-06-05 | Conti Temic Microelectronic Gmbh | Verfahren und Vorrichtung zur Steuerung der Betriebsweise einer Brennkraftmaschine |
| DE102008021495B4 (de) * | 2008-04-29 | 2019-09-19 | Conti Temic Microelectronic Gmbh | Verfahren zum Abgleichen eines Einspritzsystems einer Brennkraftmaschine |
| FI122489B (fi) * | 2008-05-26 | 2012-02-15 | Waertsilae Finland Oy | Menetelmä ja järjestelmä dieselmoottorin sylintereiden tasapainottamiseksi |
| GB2463022B (en) * | 2008-08-28 | 2012-04-11 | Gm Global Tech Operations Inc | A method for correcting the cylinder unbalancing in an internal combustion engine |
| DE102008052245A1 (de) * | 2008-10-18 | 2010-04-22 | Conti Temic Microelectronic Gmbh | Verfahren zum Ermitteln einer kurbelwellentorsionsoptimalen Betriebsweise einer Brennkraftmaschine |
| DE102008054215A1 (de) | 2008-10-31 | 2010-05-06 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Vertrimmungsbestimmung einer Brennkraftmaschine mit zumindest zwei Brennkammern |
| DE102009008742A1 (de) | 2009-02-12 | 2010-08-19 | Bayerische Motoren Werke Aktiengesellschaft | Reihensechszylinder-Brennkraftmaschine |
| DE102011005289B3 (de) * | 2011-03-09 | 2012-08-16 | Continental Automotive Gmbh | Verfahren zur Auswertung eines Messsignals |
| US10036335B2 (en) * | 2011-09-15 | 2018-07-31 | General Electric Company | Systems and methods for diagnosing an engine |
| CN104246188B (zh) * | 2012-04-24 | 2017-02-22 | 丰田自动车株式会社 | 内燃机的控制装置 |
| US9606022B2 (en) | 2012-08-31 | 2017-03-28 | General Electric Company | Systems and methods for diagnosing engine components and auxiliary equipment associated with an engine |
| DE102012020488B3 (de) | 2012-10-10 | 2014-03-20 | Mtu Friedrichshafen Gmbh | Verfahren zur Momentenregelung eines Verbrennungsmotors und Verbrennungsmotor |
| DE102012020490B3 (de) * | 2012-10-10 | 2014-03-13 | Mtu Friedrichshafen Gmbh | Verfahren zur Ausfallerkennung von Injektoren in einem Verbrennungsmotor, Motorsteuergerät und System zur Durchführung eines Verfahrens |
| DE102012020489B4 (de) | 2012-10-10 | 2014-04-30 | Mtu Friedrichshafen Gmbh | Verfahren zur Angleichung eines Einspritzverhaltens von Injektoren in einem Verbrennungsmotor, Motorsteuergerät und System zur Angleichung eines Einspritzverhaltens |
| DE102013222556A1 (de) * | 2013-11-06 | 2015-05-07 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Erkennung von defekten Einspritzdüsen eines Verbrennungsmotors |
| US9624851B2 (en) * | 2014-02-12 | 2017-04-18 | GM Global Technology Operations LLC | Method of operating a vehicle powertrain having a gas phase fuelable engine |
| FR3035157B1 (fr) | 2015-04-16 | 2017-04-21 | Continental Automotive France | Procede et dispositif de detection de rotation inverse d'un moteur a combustion interne |
| US9605612B2 (en) * | 2015-06-15 | 2017-03-28 | GM Global Technology Operations LLC | System and method for determining the speed of an engine when one or more cylinders of the engine are deactivated |
| EP3165747A1 (de) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Brennkraftmaschine mit einspritzmengensteuerung |
| EP3165750A1 (de) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Brennkraftmaschine mit kraftstoffinjektordiagnose |
| EP3165745A1 (de) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Brennkraftmaschine mit einspritzmengensteuerung |
| CN109790786B (zh) * | 2016-09-16 | 2020-04-14 | 日产自动车株式会社 | 车辆用发动机的控制方法以及控制装置 |
| CA3076454A1 (en) * | 2017-10-04 | 2019-04-11 | The Board Of Trustees Of Western Michigan University | Torque sensor for engines |
| IT201800001107A1 (it) * | 2018-01-16 | 2019-07-16 | Ferrari Spa | Sistema di identificazione e di soppressione di uno squilibrio di erogazione di coppia di un motore a combustione interna dotato di due o piu' cilindri |
| DE102018209253B4 (de) | 2018-06-11 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Fourier-Diagnose eines Ladungswechselverhaltens eines Verbrennungsmotors |
| JP7261189B2 (ja) * | 2020-01-31 | 2023-04-19 | 日立Astemo株式会社 | 内燃機関制御装置及び内燃機関制御方法 |
| CN112761802B (zh) * | 2021-02-23 | 2023-02-17 | 上海新动力汽车科技股份有限公司 | 柴油机的突卸调速方法 |
| CN120714336B (zh) * | 2025-07-11 | 2026-02-17 | 湖北玉暖铜业有限公司 | 一种黄铜棒生产烟尘环保处理装置 |
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| DE4122139C2 (de) * | 1991-07-04 | 2000-07-06 | Bosch Gmbh Robert | Verfahren zur Zylindergleichstellung bezüglich der Kraftstoff-Einspritzmengen bei einer Brennkraftmaschine |
| DE19548604C1 (de) * | 1995-09-14 | 1997-02-20 | Mtu Friedrichshafen Gmbh | Verfahren zur zylinderindividuellen Bestimmung relativer Unterschiede ungleichförmiger Zylindermomente bei einer Kolbenbrennkraftmaschine und Anwendung des Verfahrens |
| SE512556C2 (sv) * | 1995-12-22 | 2000-04-03 | Volvo Ab | Metod för reducering av vibrationer i ett fordon och anordning för utförande av metoden |
| US6082187A (en) * | 1998-12-18 | 2000-07-04 | Caterpillar Inc. | Method for detecting a power loss condition of a reciprocating internal combustion engine |
| DE19633066C2 (de) * | 1996-08-16 | 1998-09-03 | Telefunken Microelectron | Verfahren zur zylinderselektiven Steuerung einer selbstzündenden Brennkraftmaschine |
| US6021758A (en) * | 1997-11-26 | 2000-02-08 | Cummins Engine Company, Inc. | Method and apparatus for engine cylinder balancing using sensed engine speed |
| US6189378B1 (en) * | 1998-12-14 | 2001-02-20 | Caterpillar Inc. | Electronically controlled fuel injector trimming |
| DE19859074A1 (de) * | 1998-12-21 | 2000-06-29 | Bosch Gmbh Robert | Verfahren zur Regelung der Laufruhe eines Verbrennungsmotors |
| US6668812B2 (en) * | 2001-01-08 | 2003-12-30 | General Motors Corporation | Individual cylinder controller for three-cylinder engine |
| US6546912B2 (en) * | 2001-03-02 | 2003-04-15 | Cummins Engine Company, Inc. | On-line individual fuel injector diagnostics from instantaneous engine speed measurements |
-
2000
- 2000-11-07 DE DE10055192A patent/DE10055192C2/de not_active Expired - Fee Related
-
2001
- 2001-11-02 US US10/169,611 patent/US6820593B2/en not_active Expired - Fee Related
- 2001-11-02 EP EP01993755A patent/EP1242738B1/de not_active Expired - Lifetime
- 2001-11-02 DE DE50100412T patent/DE50100412D1/de not_active Expired - Lifetime
- 2001-11-02 WO PCT/EP2001/012697 patent/WO2002038936A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0238936A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20030089338A1 (en) | 2003-05-15 |
| DE50100412D1 (de) | 2003-08-28 |
| DE10055192C2 (de) | 2002-11-21 |
| DE10055192A1 (de) | 2002-05-29 |
| WO2002038936A1 (de) | 2002-05-16 |
| US6820593B2 (en) | 2004-11-23 |
| EP1242738B1 (de) | 2003-07-23 |
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