EP3740664A1 - Verfahren zur bestimmung einer position einer verbrennungskraftmaschine - Google Patents
Verfahren zur bestimmung einer position einer verbrennungskraftmaschineInfo
- Publication number
- EP3740664A1 EP3740664A1 EP18811790.7A EP18811790A EP3740664A1 EP 3740664 A1 EP3740664 A1 EP 3740664A1 EP 18811790 A EP18811790 A EP 18811790A EP 3740664 A1 EP3740664 A1 EP 3740664A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- speed
- crankshaft
- engine
- generated
- 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
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
- F02D2041/0092—Synchronisation of the cylinders at engine start
-
- 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
- F02D2200/101—Engine speed
-
- 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
- F02D2200/1012—Engine speed gradient
Definitions
- the invention relates to a method for determining a position of a Ver combustion engine and an arrangement for carrying out the method.
- the invention further relates to a computer program and a machine-readable storage medium for carrying out the method.
- injections and ignitions are controlled by the engine control unit using engine management software.
- This software must have knowledge of what position or at which lifting height the cylinder is to act injections and ignitions to be.
- a sensor wheel mounted on the crankshaft of the internal combustion engine and having a number of teeth and a circumferential gap can be used.
- a donor wheel with some teeth mounted on the camshaft There are then mounted sensors on these donor wheels, which, when the machine is working and so that the crankshaft rotates, electrical signals he testify. These donor wheels have a fixed relationship to the mechanical position of the machine.
- crankshaft signal is faulty
- crankshaft encoder wheels it is still possible to synchronize the software with engine position.
- the accuracy of the information provided by the engine management software is not very high, and therefore, the torque is limited in such a mode that may be called a crank wave backup mode.
- crankshaft sensor sensor signal In the low-priced two-wheel segment usually only one crankshaft sensor sensor signal is available, even if the engine has more than one cylinder.
- software techniques are used. One of the known techniques is to use the suction pipe pressure signal information in combination with the crankshaft sensor signal to detect the engine position.
- a method for determining a crankshaft position of an internal combustion engine in which a rotational speed curve of the crankshaft over a time is detected, the crankshaft position by adjusting the speed curve with a known Drehbaumver running a working cycle of the internal combustion engine is determined.
- the known speed curve in this case has a characteristic of the crankshaft position section.
- the presented method makes it possible to determine the motor position, ie the position in which one or more cylinders are located, and thus to determine the power stroke. It can also be said at this point that the method is used to determine the crankshaft position. Therefore, it is possible to determine which operating stroke the cylinder (s) are in and accordingly to set injections and ignitions by synchronizing the software.
- the described method is therefore based on generating or generating a signal which uses the information of the engine speed signal, which is received by the engine control unit.
- This motor speed typically indicates the speed of the motor.
- the speed information is provided either by the crankshaft sensor signal or by the signal of the generator, which is mounted in a bicycle directly to the Kurbelwel le.
- This generated signal highlights the significant change in engine speed information or engine speed in the area of top dead center compression (TDC) of the high pressure loop. If this signal pattern verwen det, it is easily possible to detect the position of a cylinder in an internal combustion engine. In the case of a single-cylinder engine, there is only once a speed change due to compression and decompression in the high-pressure loop during a work cycle.
- TDC top dead center compression
- this method requires only the gate speed signal. There are no further signals and information he required. It can be used in particular for all Zweiradsystemen with a single cylinder, two cylinders and also in multi-cylinder systems effectively Erfas solution for engine position.
- the presented method at least in some of the embodiments, has the following advantages:
- the presented algorithm can be used to detect the phase or power stroke during a kick start
- the generator signal providing the engine speed information may also be used to detect the engine position. Thus costs for a sensor wheel, a sensor and signal conditioning circuits can be saved
- the algorithm can detect the engine position faster compared to other procedures, therefore the engine start can be carried out faster,
- the method can be used to detect the power stroke during startup. It is also possible to use the method in resynchronizing at higher speed of the machine. Therefore, the scope of the method is extended compared to other methods. There is no need to use additional techniques, so the complexity of the software is reduced
- a calibration of the algorithm is also faster compared to other power stroke detection methods.
- FIG. 1 shows curves of a crankshaft and camshaft signal.
- FIG. 2 shows in a graph the speed behavior of an engine when starting by means of an electromechanical starter.
- Figure 3 shows a waveform of a signal representing a ratio.
- FIG. 4 shows sequences of the presented method on the basis of a state machine.
- FIGS. 5 to 10 show courses of a crankshaft signal.
- FIG. 11 shows in a graph a speed characteristic of a start with kickstarter.
- FIG. 1 shows the progressions of a crankshaft signal 10 and a camshaft signal 12.
- crankshaft signal top dead centers (OT) are marked, namely OT2 20, OT1 22, OT3 24 and OT4 26.
- Figure 2 shows the course of an engine speed signal 50 in a two-wheel with a cylinder during the start.
- the crankshaft angle [° CA] is plotted on an abscissa 52 and the engine speed [rpm] is plotted on an ordinate 54.
- the illustration shows that the engine speed falls during the compression stroke and increases greatly during the decompression phase.
- FIG. 3 shows the course or the behavior of this generated signal 100. Since the time and an ordinate 104 are plotted on an abscissa 102. Furthermore, a calibrated threshold value 106 is entered in the illustration. In the course shown, a particular pattern 108 is seen that repeats itself in the generated signal 100. This pattern 108 appears once for a compression in top dead center of the high pressure phase. In a Zweiradsys system with a cylinder is exactly such a pattern per cycle or Ar beitszyklus to recognize.
- This particular pattern 108 has a fixed relationship with the mechanical position of the motor.
- the software may be synchronized with the engine position based on the particular pattern once this pattern 108 has been identified in the signal 100.
- the signal pattern 100 shown is constructed, as expressed by the following equation: where t [i], t [j] represents the edge time from the machine speed signal.
- This edge time on the machine speed signal can between two rising signal edges, between two falling signal edges o- between all signal edges (rising to falling or vice versa) measured become.
- the machine speed may also be used directly instead of the edge times to generate the signal pattern.
- the sums shown are calculated for two different sets of measured edge times. In order to obtain a suitable ratio of the times t [i] or tp], these need not be consecutive, but they may be. Also, the number of accumulated times may be one or more. Depending on the selected times for numerator and denominator different ratio properties can be achieved. An example is shown in FIG. The choice of the quantities for numerator and denominator can be chosen in a way who the, that the resulting ratio of the sums clearly highlights the special pattern for synchronizing the engine position and so makes it suitably detectable ge.
- the amplitude of the resulting pattern can be checked against a calibratable threshold. If the amplitude is greater than the calibratable threshold, or less if the characteristic point is maximum or minimum, this means that the software has found the motor position.
- This threshold depends on environmental conditions, such as engine temperature, engine speed, altitude, etc., and can be easily adjusted by calibration or during run time.
- the ratio pattern may be evaluated by various other signal processing techniques, such as cross-correlation, to find certain characteristic points.
- FIG. 4 shows a state machine 130 which illustrates the phase detection algorithm at each edge of the speed signal.
- the illustration shows different states, namely:
- the method can be used to capture motor position in the following systems:
- the software can be easily synchronized with the mechanical engine position, where the gap information from the crankshaft sensor and the pattern in the generated signal are used.
- a crankshaft signal 200 of an engine with an asymmetrically mounted two-cylinder system with crankshaft sensor is shown in FIG. Furthermore, the illustration OT1 shows 202 and OT2 204.
- a first arrow 206 indicates the distance between the speed signal gap and a first TDC
- a second arrow 208 indicates the distance between the speed signal gap and a second TDC.
- the different length of the arrows illustrates the asymmetric positioning of the cylinder relative to the crankshaft and the associated speed signal.
- a crankshaft signal 250 of a motor with symmetrically mounted Zweizy Lindersystems with crankshaft sensor is shown in Figure 6. Furthermore, the illustration OT1 shows 252 and OT2 204.
- a first arrow 206 indicates the distance between the speed signal gap and a first TDC
- a second arrow 208 indicates the distance between the speed signal gap and a second TDC. The same length of the arrows illustrates the symmetrical distance of the cylinder relative to each other with respect to the crankshaft and the associated Drehieresig signal.
- crankshaft sensor signal there is no crankshaft sensor signal with gap available.
- the motor speed signal information about the generator signal is available, the signal is generated using the motor speed signal, ie the generator signal,
- This distance information can be used to detect the mechanical engine position.
- a crankshaft signal 300 of an engine with an asymmetrically mounted two-cylinder system without crankshaft sensor is shown in FIG. Furthermore, the illustration OT1 shows 302 and OT2 304.
- crankshaft sensor signal There is no crankshaft sensor signal with gap available. However, engine speed signal information about the generator signal is available.
- the signal is generated using the engine speed signal, i. H. the generator signal generated,
- crankshaft signal 350 of a motor with symmetrically mounted Zweizy Lindersystems without crankshaft sensor is shown in Figure 8. Furthermore, the illustration shows OT1 352 and OT2 354. Case 5
- the top dead center position may have a unique pattern. In one revolution of the crankshaft, two top dead centers can be observed, and in another turn of the crankshaft, only one top dead center can be observed.
- crankshaft signal 400 of a three-cylinder engine with crankshaft sensor is shown in FIG. Furthermore, the illustration shows OT1 402, OT2 404 and OT3 406.
- crankshaft signal 450 of a three-cylinder engine with crankshaft sensor is shown in FIG. Furthermore, the illustration OT1 452,
- FIG. 11 shows the behavior of the engine speed signal 500 during a kick start for a single-cylinder engine, wherein the crankshaft angle [° CA] is plotted on an abscissa 502 and the engine speed [rpm] is plotted on an ordinate 504.
- a unique pattern can also be created around top dead center compression during kickstart on a single cylinder engine.
- This signal pattern can be used to detect the motor position also during the kick-start.
- additional intelligence is required to detect the pattern in the generated signal. This is due to the fact that the engine speeds increase strongly during the kick start. This has an influence on the quality of the generated signal.
- the engine speeds begin to decrease after a maximum value has been reached, it must be possible to easily detect the pattern in the generated signal.
- the presented procedures for synchronizing systems with one or more cylinders can also be used for Kickstarter booting.
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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018200521.4A DE102018200521A1 (de) | 2018-01-15 | 2018-01-15 | Verfahren zur Bestimmung einer Position einer Verbrennungskraftmaschine |
| PCT/EP2018/082931 WO2019137688A1 (de) | 2018-01-15 | 2018-11-29 | Verfahren zur bestimmung einer position einer verbrennungskraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3740664A1 true EP3740664A1 (de) | 2020-11-25 |
| EP3740664B1 EP3740664B1 (de) | 2025-02-12 |
Family
ID=64564869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18811790.7A Active EP3740664B1 (de) | 2018-01-15 | 2018-11-29 | Verfahren zur bestimmung einer position einer verbrennungskraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3740664B1 (de) |
| CN (1) | CN111601960B (de) |
| DE (1) | DE102018200521A1 (de) |
| WO (1) | WO2019137688A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021207797A1 (de) | 2021-07-21 | 2023-01-26 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren und Vorrichtung zur Phasenerkennung einer Kolbenbewegung in einem Zylinder eines Mehrzylinder-Viertakt-Verbrennungsmotors |
| CN117167160A (zh) * | 2022-05-26 | 2023-12-05 | 比亚迪股份有限公司 | 一种发动机控制方法、系统、车辆、设备和介质 |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043189A (en) * | 1976-05-07 | 1977-08-23 | United Technologies Corporation | Engine, cylinder identification (CID) transducer |
| DE3611262A1 (de) * | 1986-04-04 | 1987-10-08 | Bosch Gmbh Robert | Verfahren zur erkennung des arbeitstaktes eines zylinders einer brennkraftmaschine |
| AT388457B (de) * | 1986-11-25 | 1989-06-26 | Avl Verbrennungskraft Messtech | Verfahren und einrichtung zur pruefung einer brennkraftmaschine |
| JP2541949B2 (ja) * | 1986-11-28 | 1996-10-09 | 本田技研工業株式会社 | 4サイクル内燃機関の点火時期制御装置 |
| US5165271A (en) * | 1991-03-29 | 1992-11-24 | Cummins Electronics | Single sensor apparatus and method for determining engine speed and position |
| DE19521277A1 (de) * | 1995-06-10 | 1996-12-12 | Bosch Gmbh Robert | Einrichtung zur Zylindererkennung bei einer mehrzylindrigen Brennkraftmaschine |
| US5979413A (en) * | 1996-03-01 | 1999-11-09 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder judging device for internal combustion engine |
| EP0813050B1 (de) * | 1996-06-14 | 2004-06-30 | Robert Bosch Gmbh | Einrichtung zur Zylindererkennung bei einer Mehrzylinder-Brennkraftmaschine |
| DE19638010A1 (de) * | 1996-09-18 | 1998-03-19 | Bosch Gmbh Robert | Verfahren zur Bestimmung der Phasenlage bei einer 4-Takt Brennkraftmaschine |
| JP3508720B2 (ja) * | 2000-01-27 | 2004-03-22 | 株式会社デンソー | エンジン制御装置 |
| DE10015595A1 (de) * | 2000-03-29 | 2001-10-04 | Bayerische Motoren Werke Ag | Verfahren zur Erkennung des Verbrennungstaktes bei einem Einzylinder-Viertaktmotor |
| JP3853586B2 (ja) * | 2000-10-18 | 2006-12-06 | 三菱電機株式会社 | 内燃機関の気筒判別装置 |
| GB2374150B (en) * | 2000-12-23 | 2003-02-19 | Bosch Gmbh Robert | Method of determining engine speed |
| DE10122247B4 (de) * | 2001-05-08 | 2004-06-24 | Robert Bosch Gmbh | Verfahren zur Phasenerkennung bei einer Brennkraftmaschine |
| JP4033718B2 (ja) * | 2002-06-13 | 2008-01-16 | 愛三工業株式会社 | 内燃機関の行程判別方法および行程判別装置 |
| US6874473B2 (en) * | 2003-08-11 | 2005-04-05 | Tecumseh Products Company | Engine cycle recognition for fuel delivery |
| DE502005009083D1 (de) * | 2004-03-01 | 2010-04-08 | Bosch Gmbh Robert | Verfahren und vorrichtung zur ermittlung eines winkellagesignals bei einer brennkraftmaschine |
| US7142973B2 (en) * | 2004-06-11 | 2006-11-28 | Denso Corporation | Engine control apparatus designed to ensure accuracy in determining engine position |
| DE102004057260A1 (de) * | 2004-11-26 | 2006-06-01 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine mit mehreren Zylindern |
| DE102007037582B4 (de) * | 2006-08-16 | 2021-12-02 | Andreas Stihl Ag & Co. Kg | Verfahren zum Erkennen von Betriebsparametern eines Arbeitsgerätes mit einem Verbrennungsmotor |
| JP5359932B2 (ja) * | 2010-02-26 | 2013-12-04 | 日産自動車株式会社 | 4ストロークサイクル内燃機関およびその気筒判別方法 |
| DE102010061769A1 (de) * | 2010-11-23 | 2012-05-24 | Robert Bosch Gmbh | Steuerung und Verfahren zur Drehzahlerfassung einer Brennkraftmaschine |
| US10036335B2 (en) * | 2011-09-15 | 2018-07-31 | General Electric Company | Systems and methods for diagnosing an engine |
| US9297321B2 (en) * | 2011-12-13 | 2016-03-29 | Woodward, Inc. | Flexible crank angle position sensing |
| DE102013216122A1 (de) * | 2013-08-14 | 2015-02-19 | Robert Bosch Gmbh | Verfahren zum Bestimmen eines Drehrichtungswechsels einer Kurbelwelle einer Brennkraftmaschine |
| DE102013223626A1 (de) * | 2013-11-20 | 2015-05-21 | Robert Bosch Gmbh | Verfahren zum Bestimmen eines aktuellen Zylindertakts eines Hubkolbenmotors |
| DE102014206182A1 (de) * | 2014-04-01 | 2015-10-01 | Robert Bosch Gmbh | Verfahren zur Bestimmung einer Kurbelwellenposition einer Brennkraftmaschine |
| US9500175B2 (en) * | 2014-06-18 | 2016-11-22 | Startec Ltd. | Motorcycle engine control system and method for enabling the use of traditional crankshaft |
| JP6579852B2 (ja) * | 2015-08-04 | 2019-09-25 | ボッシュ株式会社 | 内燃機関の始動制御装置及び始動制御方法 |
| DE102016201124A1 (de) * | 2016-01-27 | 2017-07-27 | Robert Bosch Gmbh | Ermitteln von Betriebszuständen eines Verbrennungsmotors durch einen Generatorregler einer mit dem Verbrennungsmotor gekoppelten elektrischen Maschine |
-
2018
- 2018-01-15 DE DE102018200521.4A patent/DE102018200521A1/de active Pending
- 2018-11-29 EP EP18811790.7A patent/EP3740664B1/de active Active
- 2018-11-29 CN CN201880086453.7A patent/CN111601960B/zh active Active
- 2018-11-29 WO PCT/EP2018/082931 patent/WO2019137688A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019137688A1 (de) | 2019-07-18 |
| DE102018200521A1 (de) | 2019-07-18 |
| CN111601960B (zh) | 2022-12-06 |
| EP3740664B1 (de) | 2025-02-12 |
| CN111601960A (zh) | 2020-08-28 |
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