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WO1998012432A1 - Procede permettant de determiner l'angle de phase d'un moteur a combustion interne a quatre temps et a nombre impair de cylindres - Google Patents

Procede permettant de determiner l'angle de phase d'un moteur a combustion interne a quatre temps et a nombre impair de cylindres Download PDF

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Publication number
WO1998012432A1
WO1998012432A1 PCT/DE1997/001707 DE9701707W WO9812432A1 WO 1998012432 A1 WO1998012432 A1 WO 1998012432A1 DE 9701707 W DE9701707 W DE 9701707W WO 9812432 A1 WO9812432 A1 WO 9812432A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
internal combustion
combustion engine
crankshaft
sensor
Prior art date
Application number
PCT/DE1997/001707
Other languages
German (de)
English (en)
Inventor
Guenter Braun
Michael Haufer
Taskin Ege
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to DE59706384T priority Critical patent/DE59706384D1/de
Priority to AT97938754T priority patent/ATE213307T1/de
Priority to KR1019980703544A priority patent/KR100572132B1/ko
Priority to JP51413898A priority patent/JP3998719B2/ja
Priority to EP97938754A priority patent/EP0862692B1/fr
Publication of WO1998012432A1 publication Critical patent/WO1998012432A1/fr

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
    • F02D41/009—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
    • 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

Definitions

  • the invention relates to a method for determining the phase position in a 4-stroke internal combustion engine with an odd number of cylinders according to the preamble of the main claim.
  • the control unit of the internal combustion engine calculates, depending on the detected position of the crankshaft or camshaft, after synchronization, at what point in time for which cylinder fuel is to be injected and when in which cylinder an ignition is to be triggered.
  • the angular position of the crankshaft or camshaft In conventional internal combustion engines, the angular position of the crankshaft or camshaft, after synchronization, at what point in time for which cylinder fuel is to be injected and when in which cylinder an ignition is to be triggered.
  • crankshaft To determine the crankshaft with the aid of a sensor which scans a disk connected to the crankshaft with a characteristic surface, for example with a large number of similar angle marks and a reference mark, and emits a corresponding signal to the control unit. Since the crankshaft rotates twice within a working cycle of a 4-stroke internal combustion engine while the camshaft only rotates once, the phase position of the internal combustion engine cannot be clearly determined from the crankshaft sensor signal alone; it is therefore common to use the same
  • phase sensor To determine the camshaft position with the help of its own sensor, a so-called phase sensor, this phase sensor scans a disk connected to the camshaft with a single marking. The resulting signal, which has one pulse per camshaft revolution, is also evaluated in the control unit.
  • the signal supplied by a crankshaft sensor which has one pulse per crankshaft revolution, i.e. two pulses per camshaft revolution, is related in the control unit of the internal combustion engine to a second signal, which is, for example, a signal that fluctuates periodically in the work cycle of the internal combustion engine.
  • This periodically fluctuating signal is either the output signal of a speed sensor or the output signal of an intake manifold pressure sensor.
  • the inventive method for determining the phase position in a 4-stroke internal combustion engine with the features of claim 1 has the advantage that engine synchronization is possible without detecting the camshaft position. This also applies to systems in which a phase relationship between the crankshaft and camshaft can be changed. This advantage is achieved by determining the phase position of the signal supplied by the crankshaft angle sensor, which has a singularity, with a second signal, which fluctuates in the combustion cycle and is cylinder-specific
  • Has peculiarities is set in relation, the course of the second signal during the occurrence of the singularity of the first signal being examined to determine the phase position. Since the method relates exclusively to internal combustion engines with an odd number of cylinders, when the singularity of the first signal occurs in the first crankshaft revolution, the course of the second signal is different from that in the second crankshaft revolution. The reason for this is that the cylinders in the first crankshaft revolution are in a different cycle than in the second, so that the torque delivered by the internal combustion engine is different. This has an effect on the course of the second signal, e.g. B. on the speed curve and the intake manifold pressure curve, these effects are measurable and can be used for cylinder detection.
  • the second signal will therefore be the output signal of a speed sensor or an intake manifold pressure sensor. Further advantages of the invention result from the measures specified in the subclaims. It has proven to be particularly advantageous that phase shifts between the first and the second speed signal are unproblematic when determining the phase position, since the
  • Course of the second signal and not the occurrence of a minimum or maximum of the second signal is related to the singularity of the first signal.
  • the method for determining the phase position can already be carried out during the starting process, that is to say even before the first firing of a cylinder has taken place. This early determination of the phase position is possible since the different cycles have different effects on the speed or the intake manifold pressure even without firing.
  • the sensor including electronics, the camshaft sprocket and the corresponding wiring can be saved.
  • Three connector pins as well as the conditioning circuit for the sensor and a computer port pin can be saved on the engine control unit.
  • the circuit board area can also be reduced.
  • FIG. 1 the components of the control system of an internal combustion engine required to explain the invention are shown schematically.
  • 10 denotes an encoder disk, which is rigidly connected to the crankshaft 11 of the internal combustion engine and has a large number of similar angular marks 12 on its circumference.
  • reference mark 13 which is implemented, for example, by two missing angle marks.
  • the sensor disk 10 is scanned by a sensor 14, for example an inductive sensor or a Hall sensor.
  • the voltage pulses of the signal SI generated when the angle marks pass in the sensor are processed and processed in a suitable manner in the control unit 15 of the internal combustion engine.
  • an internal combustion engine In addition to a crankshaft 11, an internal combustion engine usually also has at least one camshaft, which is designated 25 in FIG. 1 and is usually in a fixed relationship with the crankshaft 11. This reference is symbolized by line 16.
  • the angular position of the camshaft 15 is not detected in the control system of an internal combustion engine shown in FIG. 1.
  • a periodic combustion cycle is performed fluctuating second signal processed in the control unit.
  • This second signal S2 is obtained with the aid of a sensor 17.
  • the sensor 17 is, for example, a sensor that measures the pressure in the intake manifold of the internal combustion engine. In principle, another variable that fluctuates in the combustion cycle could also be evaluated.
  • the control unit 15 can be supplied with further input variables required for the control or regulation of the internal combustion engine, in FIG.
  • Input variable "ignition on” is represented as a signal which is supplied by the terminal K115 of the ignition lock when the ignition switch 18 is closed and which indicates to the control unit 15 that the internal combustion engine has been started up.
  • the control unit 15 itself comprises at least one central computer unit 19 and memory 20.
  • control signals for the injection and ignition are formed for corresponding components of the internal combustion engine, which are not described in detail. These signals are emitted via the outputs 21 and 22 of the control device 15.
  • the control unit is supplied with voltage in the usual way from the battery 23 via a switch 24, which is closed during the operation of the internal combustion engine and, if appropriate, during a run-on phase. The signal processing and evaluation described below takes place in the control unit 15.
  • the angular position of the crankshaft 11 can be detected at any time during operation of the internal combustion engine.
  • a singularity occurs in the signal SI which corresponds to the reference mark of the crankshaft. Since the assignment between crankshaft 11 and camshaft 25 is usually As well as the assignment between the position of the camshaft and the position of the individual cylinders of the internal combustion engine is known, a synchronization can take place after the reference mark has been recognized, but only if a signal that is characteristic of the phase position is present.
  • Output signal of an intake manifold pressure sensor evaluated which has characteristics peculiar to the position of the cylinders.
  • This signal S2 or the characteristic peculiarities of this signal are related to the signal SI, and in particular the course of the signal S2 is evaluated during the occurrence of the reference mark or the singularity of the signal SI.
  • Cylinder 1 in the exhaust stroke Cylinder 2 in the work stroke Cylinder 3 in the intake stroke.
  • the second signals are derived according to the time and thus gradients and / or
  • both the speed curve and the intake manifold pressure curve can be used as signals S2 for synchronization.
  • the evaluation can take place immediately after the start of the rotation of the engine in the unfired mode even before the first injections or ignitions are triggered. In the first revolutions without firing, both the speed curve and the intake manifold pressure curve are characteristic of the first or second crankshaft revolution. After the start of normal engine operation, especially at high engine speeds or speed changes, the speed curve may no longer be used to determine the engine position. If synchronization is to be carried out during operation, it must be carried out by evaluating the intake manifold pressure signal.
  • the methods according to the invention are used in systems with a camshaft sensor, they can always be used as emergency operation if a defect in the camshaft sensor is detected.

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)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

Procédés permettant de déterminer l'angle de phase d'un moteur à combustion interne à quatre temps et à nombre impair de cylindres, exempt de détecteur d'arbre à cames. Selon lesdits procédés, un premier signal produit par un détecteur d'angle de vilebrequin qui présente une singularité est mis en relation avec un second signal qui est par exemple un signal du nombre de tours ou le signal de sortie d'un détecteur de pression monté dans le tuyau d'admission, et la courbe du second signal est évaluée dans la plage de singularité du premier signal. Cette courbe de signal étant différente selon que le vilebrequin se trouve dans sa première ou dans sa deuxième révolution, il est possible de déterminer clairement l'angle de phase.
PCT/DE1997/001707 1996-09-18 1997-08-09 Procede permettant de determiner l'angle de phase d'un moteur a combustion interne a quatre temps et a nombre impair de cylindres WO1998012432A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59706384T DE59706384D1 (de) 1996-09-18 1997-08-09 Verfahren zur bestimmung der phasenlage bei einer 4-takt brennkraftmaschine mit ungerader zylinderzahl
AT97938754T ATE213307T1 (de) 1996-09-18 1997-08-09 Verfahren zur bestimmung der phasenlage bei einer 4-takt brennkraftmaschine mit ungerader zylinderzahl
KR1019980703544A KR100572132B1 (ko) 1996-09-18 1997-08-09 홀수개의실린더를구비한4행정내연기관에서의위상각결정방법
JP51413898A JP3998719B2 (ja) 1996-09-18 1997-08-09 ４サイクル内燃機関における位相位置を求めるための方法
EP97938754A EP0862692B1 (fr) 1996-09-18 1997-08-09 Procede permettant de determiner l'angle de phase d'un moteur a combustion interne a quatre temps et a nombre impair de cylindres

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638010A DE19638010A1 (de) 1996-09-18 1996-09-18 Verfahren zur Bestimmung der Phasenlage bei einer 4-Takt Brennkraftmaschine
DE19638010.3 1996-09-18

Publications (1)

Publication Number Publication Date
WO1998012432A1 true WO1998012432A1 (fr) 1998-03-26

Family

ID=7805981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001707 WO1998012432A1 (fr) 1996-09-18 1997-08-09 Procede permettant de determiner l'angle de phase d'un moteur a combustion interne a quatre temps et a nombre impair de cylindres

Country Status (9)

Country Link
EP (1) EP0862692B1 (fr)
JP (1) JP3998719B2 (fr)
KR (1) KR100572132B1 (fr)
CN (1) CN1078672C (fr)
AT (1) ATE213307T1 (fr)
CZ (1) CZ130698A3 (fr)
DE (2) DE19638010A1 (fr)
ES (1) ES2172807T3 (fr)
WO (1) WO1998012432A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050676A2 (fr) * 1999-05-05 2000-11-08 Delphi Technologies, Inc. Indicateur de position de moteur à combustion interne

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337123A (en) * 1998-05-09 1999-11-10 Rover Group Calculation of crankshaft angle in a four stroke engine having an odd number of cylinders
JP4093682B2 (ja) * 1999-05-28 2008-06-04 本田技研工業株式会社 ４サイクルエンジンの行程判別装置
US6499341B1 (en) * 2000-07-20 2002-12-31 Harley-Davidson Motor Company Group, Inc. Motorcycle having system for determining engine phase
DE10036436C2 (de) * 2000-07-26 2002-06-13 Siemens Ag Verfahren zum Synchronisieren einer Brennkraftmaschine
DE10113194A1 (de) * 2001-03-19 2002-09-26 Volkswagen Ag Verfahren und Vorrichtung zum Erkennen des Arbeitstaktes eines Zylinders eines Verbrennungsmotors
DE10116485B4 (de) * 2001-04-03 2007-01-11 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zum Ermitteln der Motordrehzahl eines Verbrennungsmotors
TWI221880B (en) * 2001-10-24 2004-10-11 Yamaha Motor Co Ltd Engine control device
DE10234949C1 (de) * 2002-07-31 2003-10-30 Siemens Ag Verfahren zum Bestimmen diskreter Winkelpositionen einer Brennkraftmaschine mittels eines Nockenwellensignals
ES2392820T3 (es) * 2002-07-31 2012-12-14 Yamaha Hatsudoki Kabushiki Kaisha Dispositivo de control de motor
DE10344773B3 (de) 2003-09-26 2005-05-25 Siemens Ag Verfahren und Vorrichtung zum Ermitteln einer Phasenlage zwischen einer Kurbelwelle und einer Nockenwelle einer Brennkraftmaschine
JP2006037944A (ja) * 2004-06-24 2006-02-09 Yamaha Motor Co Ltd ４サイクルエンジンの行程判別装置
CN100368673C (zh) * 2004-06-24 2008-02-13 雅马哈发动机株式会社 四冲程发动机的冲程判别设备
DE102004062406B4 (de) 2004-12-23 2007-08-09 Siemens Ag Verfahren und Vorrichtung zum Ermitteln einer Phase einer Brennkraftmaschine
EP1710421A1 (fr) * 2005-04-06 2006-10-11 Scania CV AB (publ) Méthode et dispositif pour moteur à combustion interne
FI121150B (fi) 2005-11-30 2010-07-30 Waertsilae Finland Oy Mäntäpolttomoottorisysteemin laitteisto ja menetelmä tunnistamaan epäyhtenäinen sylinteriteho-osuus
CN101360913B (zh) * 2006-01-26 2010-09-29 德尔菲技术公司 用于防止摩托车踏板起动器反冲的方法和装置
FR2911919A1 (fr) * 2007-06-04 2008-08-01 Siemens Vdo Automotive Sas Procede de synchronisation d'un moteur a combustion interne
FR2925593B1 (fr) * 2007-12-20 2014-05-16 Renault Sas Procede pour produire un signal de synchronisation du cycle de fonctionnement d'un moteur a combustion interne
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
DE102011086124B3 (de) * 2011-11-10 2013-01-31 Continental Automotive Gmbh Verfahren zur Zylindererkennung bei einer Brennkraftmaschine und Steuergerät
JP5884589B2 (ja) * 2012-03-23 2016-03-15 アイシン精機株式会社 エンジン制御装置
CN102678362A (zh) * 2012-05-16 2012-09-19 联合汽车电子有限公司 无相位传感器识别三缸发动机1缸压缩上止点的系统
CN103630365B (zh) * 2012-08-29 2016-09-07 比亚迪股份有限公司 三缸发动机的相位判定方法
CN103016185B (zh) * 2012-11-26 2016-01-20 联合汽车电子有限公司 快速识别曲轴位置的方法
CN104314688B (zh) * 2014-08-13 2016-10-05 吉林大学 一种判定发动机曲轴转动相位和实时位置的装置及方法
CN104806368B (zh) * 2015-04-09 2017-06-06 中国第一汽车股份有限公司无锡油泵油嘴研究所 适用于任意安装相位的发动机快速启动方法
SE541683C2 (en) * 2016-12-19 2019-11-26 Scania Cv Ab Cylinder Detection in a Four-stroke Internal Combustion Engine
DE102018200521A1 (de) * 2018-01-15 2019-07-18 Robert Bosch Gmbh Verfahren zur Bestimmung einer Position einer Verbrennungskraftmaschine
DE102019219278A1 (de) * 2019-12-11 2021-06-17 Volkswagen Aktiengesellschaft Verfahren zur Ermittlung der Nockenwellenlage eines Serienmotors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266427A (en) * 1979-07-11 1981-05-12 Creative Tool Company Combustion timing method and apparatus with direct TDC detection
US4483183A (en) * 1981-06-04 1984-11-20 Fuji Jukogyo Kabushiki Kaisha System for measuring crank angle for internal combustion engine
WO1987005971A1 (fr) * 1986-04-04 1987-10-08 Robert Bosch Gmbh Procede d'identification du temps moteur d'un cylindre dans un moteur a combustion interne
DE4114797A1 (de) * 1991-05-07 1992-11-12 Bosch Gmbh Robert Verfahren und vorrichtung zur arbeitstakterkennung bei einem viertaktmotor
DE4229773A1 (de) * 1992-09-05 1994-03-10 Bosch Gmbh Robert Verfahren zur Zylindererkennung von Brennkraftmaschinen
JPH08121299A (ja) * 1994-10-28 1996-05-14 Daihatsu Motor Co Ltd 独立点火方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266427A (en) * 1979-07-11 1981-05-12 Creative Tool Company Combustion timing method and apparatus with direct TDC detection
US4483183A (en) * 1981-06-04 1984-11-20 Fuji Jukogyo Kabushiki Kaisha System for measuring crank angle for internal combustion engine
WO1987005971A1 (fr) * 1986-04-04 1987-10-08 Robert Bosch Gmbh Procede d'identification du temps moteur d'un cylindre dans un moteur a combustion interne
DE4114797A1 (de) * 1991-05-07 1992-11-12 Bosch Gmbh Robert Verfahren und vorrichtung zur arbeitstakterkennung bei einem viertaktmotor
DE4229773A1 (de) * 1992-09-05 1994-03-10 Bosch Gmbh Robert Verfahren zur Zylindererkennung von Brennkraftmaschinen
JPH08121299A (ja) * 1994-10-28 1996-05-14 Daihatsu Motor Co Ltd 独立点火方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 096, no. 009 30 September 1996 (1996-09-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050676A2 (fr) * 1999-05-05 2000-11-08 Delphi Technologies, Inc. Indicateur de position de moteur à combustion interne
EP1050676A3 (fr) * 1999-05-05 2002-06-05 Delphi Technologies, Inc. Indicateur de position de moteur à combustion interne

Also Published As

Publication number Publication date
ES2172807T3 (es) 2002-10-01
CN1198801A (zh) 1998-11-11
JP3998719B2 (ja) 2007-10-31
KR19990067522A (ko) 1999-08-25
JP2000500841A (ja) 2000-01-25
CN1078672C (zh) 2002-01-30
ATE213307T1 (de) 2002-02-15
DE59706384D1 (de) 2002-03-21
KR100572132B1 (ko) 2006-09-22
CZ130698A3 (cs) 1998-12-16
EP0862692B1 (fr) 2002-02-13
DE19638010A1 (de) 1998-03-19
EP0862692A1 (fr) 1998-09-09

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