EP1242738A1 - Regulation of true running for diesel engines - Google Patents
Regulation of true running for diesel enginesInfo
- 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 |
---|---|---|---|
DE10055192 | 2000-11-07 | ||
DE10055192A DE10055192C2 (en) | 2000-11-07 | 2000-11-07 | Concentricity control for diesel engines |
PCT/EP2001/012697 WO2002038936A1 (en) | 2000-11-07 | 2001-11-02 | Regulation of true running for diesel engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1242738A1 true EP1242738A1 (en) | 2002-09-25 |
EP1242738B1 EP1242738B1 (en) | 2003-07-23 |
Family
ID=7662466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01993755A Expired - Lifetime EP1242738B1 (en) | 2000-11-07 | 2001-11-02 | Regulation of true running for diesel engines |
Country Status (4)
Country | Link |
---|---|
US (1) | US6820593B2 (en) |
EP (1) | EP1242738B1 (en) |
DE (2) | DE10055192C2 (en) |
WO (1) | WO2002038936A1 (en) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE522658C2 (en) * | 2002-06-28 | 2004-02-24 | Scania Cv Abp | Method for identifying a fault associated with a particular cylinder in a multi-cylinder internal combustion engine and computer program for carrying out the method |
DE10235665A1 (en) | 2002-07-31 | 2004-02-12 | Conti Temic Microelectronic Gmbh | Regulating the operation of an internal combustion engine, involves determining a revolution rate signal and transforming it into an angular frequency range using a Hartley transformation |
DE10235105B4 (en) * | 2002-08-01 | 2015-02-26 | Robert Bosch Gmbh | Method for operating an internal combustion engine, in particular of a motor vehicle |
DE10302806B4 (en) * | 2003-01-24 | 2004-12-09 | Siemens Ag | Method for calculating pressure fluctuations in a fuel supply system of an internal combustion engine working with direct fuel injection and for controlling its injection valves |
US7231994B2 (en) | 2003-11-24 | 2007-06-19 | Daimlerchrysler Corporation | Hybrid vehicle with integral generator for auxiliary loads |
DE102004010412B4 (en) * | 2004-03-01 | 2018-03-15 | Robert Bosch Gmbh | Device for operating an internal combustion engine |
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 (en) * | 2005-10-05 | 2007-05-03 | Universität Kassel | Method for controlling of smooth running of reciprocating engines, involves selection of order so that odd multiple of half camshaft frequency with in row representation is taken into consideration, for generation of control divergence |
FI121150B (en) * | 2005-11-30 | 2010-07-30 | Waertsilae Finland Oy | Apparatus and method for a piston combustion engine for identifying an uneven cylinder power ratio |
DE102006056860A1 (en) * | 2006-12-01 | 2008-06-05 | Conti Temic Microelectronic Gmbh | Method and device for controlling the operation of an internal combustion engine |
DE102008021495B4 (en) * | 2008-04-29 | 2019-09-19 | Conti Temic Microelectronic Gmbh | Method for balancing an injection system of an internal combustion engine |
FI122489B (en) * | 2008-05-26 | 2012-02-15 | Waertsilae Finland Oy | Method and apparatus for stabilizing the diesel engine cylinders |
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 (en) * | 2008-10-18 | 2010-04-22 | Conti Temic Microelectronic Gmbh | Method for determining crank shaft torsional optimal operating method of internal combustion engine, involves determining speed signals of crank shaft under operating condition of internal combustion engine |
DE102008054215A1 (en) | 2008-10-31 | 2010-05-06 | Bayerische Motoren Werke Aktiengesellschaft | Method for trimming determination, particularly signal evaluation by Fourier analysis for synchronizing cylinders in internal-combustion engine, involves measuring signal by operating cycle of internal-combustion engine |
DE102009008742A1 (en) | 2009-02-12 | 2010-08-19 | Bayerische Motoren Werke Aktiengesellschaft | Straight cylinder-internal combustion engine has crank mechanism with crankshaft, which is supported in crankshaft bearing of crankcase |
DE102011005289B3 (en) * | 2011-03-09 | 2012-08-16 | Continental Automotive Gmbh | Method for evaluating measurement signal of e.g. self-activating internal combustion engine for motor car in energized operating state, involves enforcing identical injection quantities to cylinders in energized reference state |
US8626372B2 (en) | 2011-09-15 | 2014-01-07 | General Electric Company | Systems and methods for diagnosing an engine |
WO2013161008A1 (en) * | 2012-04-24 | 2013-10-31 | トヨタ自動車株式会社 | Control device for internal combustion engine |
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 |
DE102012020490B3 (en) * | 2012-10-10 | 2014-03-13 | Mtu Friedrichshafen Gmbh | Method for failure detection of injectors in an internal combustion engine, engine control unit and system for carrying out a method |
DE102012020488B3 (en) | 2012-10-10 | 2014-03-20 | Mtu Friedrichshafen Gmbh | Method for torque control of an internal combustion engine and internal combustion engine |
DE102012020489B4 (en) | 2012-10-10 | 2014-04-30 | Mtu Friedrichshafen Gmbh | Method for adjusting the injection behavior of injectors in an internal combustion engine, engine control unit and system for adjusting an injection behavior |
DE102013222556A1 (en) * | 2013-11-06 | 2015-05-07 | Bayerische Motoren Werke Aktiengesellschaft | Method for detecting defective injection nozzles of an internal combustion engine |
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 (en) | 2015-04-16 | 2017-04-21 | Continental Automotive France | METHOD AND DEVICE FOR DETECTION OF REVERSE ROTATION OF AN INTERNAL COMBUSTION ENGINE |
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 |
EP3165750A1 (en) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Internal combustion engine with fuel injector diagnosis |
EP3165745A1 (en) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Internal combustion engine with injection amount control |
EP3165747A1 (en) | 2015-11-04 | 2017-05-10 | GE Jenbacher GmbH & Co. OG | Internal combustion engine with injection amount control |
WO2018051513A1 (en) * | 2016-09-16 | 2018-03-22 | 日産自動車株式会社 | Control method and control device for engine |
WO2019069211A1 (en) * | 2017-10-04 | 2019-04-11 | The Board Of Trustees Of Western Michigan University | Torque sensor for engines |
IT201800001107A1 (en) | 2018-01-16 | 2019-07-16 | Ferrari Spa | SYSTEM OF IDENTIFICATION AND SUPPRESSION OF A TORQUE DELIVERY UNBALANCE OF AN INTERNAL COMBUSTION ENGINE EQUIPPED WITH TWO OR MORE CYLINDERS |
DE102018209253B4 (en) | 2018-06-11 | 2020-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Fourier diagnosis of a gas exchange behavior of an internal combustion engine |
JP7261189B2 (en) * | 2020-01-31 | 2023-04-19 | 日立Astemo株式会社 | INTERNAL COMBUSTION ENGINE CONTROL DEVICE AND INTERNAL COMBUSTION ENGINE CONTROL METHOD |
CN112761802B (en) * | 2021-02-23 | 2023-02-17 | 上海新动力汽车科技股份有限公司 | Sudden unloading speed regulating method for diesel engine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4122139C2 (en) * | 1991-07-04 | 2000-07-06 | Bosch Gmbh Robert | Method for cylinder equalization with regard to the fuel injection quantities in an internal combustion engine |
DE19548604C1 (en) * | 1995-09-14 | 1997-02-20 | Mtu Friedrichshafen Gmbh | Method for the cylinder-specific determination of relative differences in non-uniform cylinder torques in a piston internal combustion engine and application of the method |
SE512556C2 (en) * | 1995-12-22 | 2000-04-03 | Volvo Ab | Method for reducing vibration in a vehicle and device for carrying out the method |
US6082187A (en) * | 1998-12-18 | 2000-07-04 | Caterpillar Inc. | Method for detecting a power loss condition of a reciprocating internal combustion engine |
DE19633066C2 (en) * | 1996-08-16 | 1998-09-03 | Telefunken Microelectron | Method for the cylinder-selective control of a self-igniting internal combustion engine |
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 (en) * | 1998-12-21 | 2000-06-29 | Bosch Gmbh Robert | Electronic control unit for equal setting of torque contributions of different cylinders of IC engine to their total torque with sensor for detecting first measure of running instability of IC engine in its engine braking operation |
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/en not_active Expired - Fee Related
-
2001
- 2001-11-02 US US10/169,611 patent/US6820593B2/en not_active Expired - Fee Related
- 2001-11-02 DE DE50100412T patent/DE50100412D1/en not_active Expired - Lifetime
- 2001-11-02 WO PCT/EP2001/012697 patent/WO2002038936A1/en active IP Right Grant
- 2001-11-02 EP EP01993755A patent/EP1242738B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0238936A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2002038936A1 (en) | 2002-05-16 |
US20030089338A1 (en) | 2003-05-15 |
EP1242738B1 (en) | 2003-07-23 |
DE10055192C2 (en) | 2002-11-21 |
US6820593B2 (en) | 2004-11-23 |
DE10055192A1 (en) | 2002-05-29 |
DE50100412D1 (en) | 2003-08-28 |
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