EP2113646A1 - Procédé de détermination de la position d'un point mort supérieur d'un moteur à combustion interne - Google Patents

Procédé de détermination de la position d'un point mort supérieur d'un moteur à combustion interne Download PDF

Info

Publication number
EP2113646A1
EP2113646A1 EP09100251A EP09100251A EP2113646A1 EP 2113646 A1 EP2113646 A1 EP 2113646A1 EP 09100251 A EP09100251 A EP 09100251A EP 09100251 A EP09100251 A EP 09100251A EP 2113646 A1 EP2113646 A1 EP 2113646A1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
internal combustion
speed
dead center
top dead
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.)
Withdrawn
Application number
EP09100251A
Other languages
German (de)
English (en)
Inventor
Steffen Meyer-Salfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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
Publication of EP2113646A1 publication Critical patent/EP2113646A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/087—Safety, indicating, or supervising devices determining top dead centre or ignition-timing
    • 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

Definitions

  • the present invention relates to a method for determining the position of a top dead center of a multi-cylinder internal combustion engine, in which a physical quantity representing the rotational speed of a crankshaft is measured.
  • the DE 10 2004 044 248 A1 describes an internal combustion engine, in which a determination of the deviation of the upper and / or lower dead center of a piston of an internal combustion engine from an applied nominal position takes place in overrun mode. For this purpose, incremental period durations are determined as a function of a crankshaft angle of the internal combustion engine from a tachometer sensor signal. Then, a model function describing the progression of the incremental period lengths as a function of a respective crankshaft angle is approximated, on the basis of which the upper and / or lower dead center of the internal combustion engine is determined by determining the extreme value.
  • a disadvantage of the prior art is that in such internal combustion engines, the determination of the top dead center takes place exclusively in the overrun mode.
  • An object of the invention is therefore to provide a new method and a new device that allow for an internal combustion engine to determine the position of a top dead center of the internal combustion engine.
  • This problem is solved by a method for determining the position of a top dead center of an internal combustion engine having a plurality of cylinders, in which a rotational speed of a crankshaft representing physical variable is measured, the engine expires without load from a predetermined speed to a stop, which falls below a predetermined speed threshold is determined on the basis of the measured speed suitable for determining the top dead center of the internal combustion engine speed parameter.
  • the invention enables a reliable determination of the position of the top dead center of the internal combustion engine.
  • the predetermined speed threshold value is undershot if, for at least one of the cylinders, a direction of rotation reversal of the internal combustion engine is detected.
  • the internal combustion engine oscillates, in which the bottom dead center of a cylinder of the internal combustion engine is passed through in a pendulum fashion several times.
  • the course of the rotational speed or the increment period durations about the bottom dead center is approximated by a computer program stored in the engine control unit by a mathematical term (for example polynomial).
  • the speed curve before and / or after the direction of rotation reversal of the internal combustion engine is described using a mathematical term from which the position of top dead center can be determined by determining the extreme value and / or further downstream corrections or correlations. Using the extreme value determination conclusions about the position of the bottom dead center can be made.
  • the invention can be realized easily and inexpensively using already existing components and elements.
  • the predetermined speed threshold value is undershot if the speed of the internal combustion engine falls below the idling speed.
  • the measured speed after falling below the predetermined speed threshold defines a speed oscillation with an associated phase position.
  • a thermodynamic loss angle is determined for the internal combustion engine, which indicates a deviation of the position of the top dead center of the phase position of the maximum pressure value.
  • a computer program for carrying out a method for determining the top dead center position of a multi-cylinder internal combustion engine, in which a physical variable representing the rotational speed of a crankshaft is measured.
  • a physical variable representing the rotational speed of a crankshaft is measured.
  • the computer program determines the computer program when falling below a predetermined speed threshold on the basis of the measured speed suitable for determining the top dead center of the internal combustion engine speed parameter.
  • an internal combustion engine having a plurality of cylinders, in which a physical variable representing the rotational speed of a crankshaft can be measured to determine the position of a top dead center of the internal combustion engine.
  • a load-free leakage of the internal combustion engine from a predetermined speed to a standstill, when falling below a predetermined speed threshold on the basis of the measured speed suitable for determining the top dead center of the internal combustion engine speed parameter can be determined.
  • Fig. 1 shows a schematic representation of a fuel injection system 1 of an internal combustion engine 6.
  • This comprises a fuel tank 2, from which a prefeed pump 3 via a line 4 with a corresponding feed pressure fuel to a fuel via a cam 7 or driven by a crankshaft high pressure fuel pump 8 pumps.
  • a quantity control valve 9 is arranged at the high-pressure pump 8 at the high-pressure pump 8 at the high-pressure pump 8.
  • the delivery rate of the high-pressure pump 8 is set.
  • the cam 7 or the crankshaft is driven by the internal combustion engine 6, for example by an associated cam or crankshaft 10 and may also be part of this cam or crankshaft 10.
  • the high-pressure pump 8 compresses the fuel to a very high pressure and conveys it via one or more lines 5 into one or more high-pressure accumulators 11, in which the fuel is stored under very high pressure and which is also referred to as a "distributor tube” or “rail” become.
  • To these several injectors or injectors 12 are connected, which inject the fuel directly into them associated combustion chambers of the internal combustion engine 6, not shown in detail.
  • the internal combustion engine 6 has e.g. four combustion chambers or cylinders 6.1, 6.2, 6.3, 6.4 and serves e.g. for driving a motor vehicle.
  • the actual fuel pressure in the high-pressure accumulator 11 is detected by a first pressure sensor 13.
  • the pressure sensor 13 transmits an electrical signal representing the actual fuel pressure to a control and regulating device 15, which is also connected on the input side to a temperature sensor 16 and a speed sensor 17 assigned to the crankshaft 10.
  • the control and regulating device 15 is connected to the prefeed pump 3 and the quantity control valve 9.
  • the control and regulating device 15 carries out a method for determining the position of a top dead center of the internal combustion engine 6, in which a rotational speed of the crankshaft 10 representing physical quantity is measured by the speed sensor 17 and the control and regulating device 15 on a storage medium 18th , which is usable with the control and regulating device 10 is stored.
  • the internal combustion engine 6 runs without load from a predetermined speed to standstill, which falls below a predetermined speed threshold on the basis of the measured speed suitable for determining the top or bottom dead center of the engine 6 speed parameter is determined, as below in detail with reference to the Fig. 2 to 4 described.
  • the method for determining the top dead center of the internal combustion engine 6 is implemented as a computer program, which is executable by the control and regulating device 15.
  • This computer program is stored for example on the electronic storage medium 18.
  • Fig. 2 2 shows a diagram 200 which illustrates a time curve 210 of an engine speed n in rpm of the internal combustion engine 6 and a time curve 220 of an incremental period IPD of a provided rpm sensor wheel after dropping below a predetermined speed threshold value by way of example.
  • the speed sensor wheel is designed according to the prior art with a certain number of teeth or gaps.
  • the incremental period IPD describes the temporal tooth-tooth distance or the time gap-gap distance.
  • the diagram 200 illustrates an embodiment of a method for determining the top dead center of the internal combustion engine 6 of FIG Fig. 1 in which a physical quantity representing the rotational speed of the crankshaft 10, as a rule the signal of the rotational speed sensor 17, is measured and evaluated.
  • the evaluation of the measured rotational speed preferably takes place from a point in time 232 at which a first direction of rotation reversal of the internal combustion engine 6 is detected in the example shown for the cylinder 6.1 and the predefined rotational speed threshold value is therefore considered to be undershot.
  • the first direction of rotation reversal is due to the fact that in an immediately preceding revolution of the internal combustion engine 6, a filling present in the cylinder 6.1 is compressed without the top dead center of the cylinder 6.1 being exceeded. That the vertex 254 determined at time 234 is not the top dead center of the cylinder 6.1.
  • the built-up in the compression pressure in the cylinder 6.1 thus acts on a piston arranged in the cylinder 6.1 back and leads short-term to reverse, but which is maintained only for a fraction of a revolution.
  • a mathematical term (e.g., polynomial) is approximated for the course of the engine speed or increment period between two points in the direction of rotation reversal.
  • a local maximum of the engine speed or a local minimum of the increment period duration is calculated.
  • the position of this local extreme value correlates with the position of the bottom dead center of the cylinder 6.1, so that the position of the dead center stored in the engine control unit can be corrected if necessary. From the mathematically determined position of the bottom dead center, the position of top dead center can very easily be deduced, and the position of top dead center stored in the engine control unit can be corrected if necessary.
  • Fig. 3 shows a diagram 300, the time course 310 of an engine speed n in rpm (rpm) and a time course 320 of the increment period of the internal combustion engine 6 of Fig. 1 by way of example in a method for determining the top dead center of the internal combustion engine 6 according to another embodiment.
  • this method is analogous to that at Fig. 2 described a method representing the rotational speed of the crankshaft 10 physical size and evaluated.
  • the internal combustion engine is placed in a load-free state at a time 315 at a speed n1 reached by dragging or firing at time 314. As a result, the speed falls from n1 to standstill n0, which is reached at time 318.
  • the time profile 310 of the measured rotational speed n assumes no linear shape, as illustrated. Instead, the measured rotational speed defines a rotational speed oscillation superimposed on the rotational speed ramp 324 from n1 to n0.
  • the oscillation of the rotational speed is dependent on the movement performed by the pistons of the engine 6: During the compression of the charge introduced into the combustion chamber by the piston, rotational energy of the internal combustion engine is converted into static energy, whereby the rotational speed decreases. During decompression, the pressure energy previously introduced into the gas is again partially converted into rotational energy, which leads to an increase in the rotational speed.
  • phase relationship between the piston movement of the speed oscillation is related to engine-specific parameters (for example, the wall heat losses and the flywheel mass). From the oscillation of the rotational speed and the assumed assumed phase position conclusions on the position of the top dead center can be drawn and the deposited in the engine control unit position of top dead center be corrected if necessary.

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)
EP09100251A 2008-04-30 2009-04-27 Procédé de détermination de la position d'un point mort supérieur d'un moteur à combustion interne Withdrawn EP2113646A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001488 2008-04-30
DE102008042980A DE102008042980A1 (de) 2008-04-30 2008-10-21 Verfahren zur Bestimmung der Lage eines oberen Totpunkts einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
EP2113646A1 true EP2113646A1 (fr) 2009-11-04

Family

ID=40935653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09100251A Withdrawn EP2113646A1 (fr) 2008-04-30 2009-04-27 Procédé de détermination de la position d'un point mort supérieur d'un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP2113646A1 (fr)
DE (1) DE102008042980A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900525A (zh) * 2011-07-28 2013-01-30 法国欧陆汽车公司 确定表示带齿目标的实际齿位置的信息的方法和相关设备
US10041966B2 (en) 2012-09-21 2018-08-07 Continental Automotive France Method for estimating the speed of an engine in a predefined position
CN113864047A (zh) * 2021-06-18 2021-12-31 广州柴油机厂股份有限公司 一种确定飞轮上止点记号的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014016416B4 (de) 2014-11-04 2018-06-28 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zur Bestimmung der Hubposition eines Kolbens im Zylinder einer Hubkolbenbrennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6499342B1 (en) * 2000-09-05 2002-12-31 Ford Global Technologies, Inc. Method of determining the stopping position of an internal combustion engine
EP1321667A1 (fr) * 2000-09-28 2003-06-25 Mitsuba Corporation Demarreur de moteur
JP2004225623A (ja) * 2003-01-23 2004-08-12 Toyota Motor Corp エンジン始動制御装置およびエンジン始動制御方法
DE102004044248A1 (de) 2004-09-10 2006-03-16 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zur Ermittlung des Totpunktes eines Kolbens einer Verbrennungskraftmaschine
JP2008057507A (ja) * 2006-09-04 2008-03-13 Mazda Motor Corp エンジンのクランク角検出装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6499342B1 (en) * 2000-09-05 2002-12-31 Ford Global Technologies, Inc. Method of determining the stopping position of an internal combustion engine
EP1321667A1 (fr) * 2000-09-28 2003-06-25 Mitsuba Corporation Demarreur de moteur
JP2004225623A (ja) * 2003-01-23 2004-08-12 Toyota Motor Corp エンジン始動制御装置およびエンジン始動制御方法
DE102004044248A1 (de) 2004-09-10 2006-03-16 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zur Ermittlung des Totpunktes eines Kolbens einer Verbrennungskraftmaschine
JP2008057507A (ja) * 2006-09-04 2008-03-13 Mazda Motor Corp エンジンのクランク角検出装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900525A (zh) * 2011-07-28 2013-01-30 法国欧陆汽车公司 确定表示带齿目标的实际齿位置的信息的方法和相关设备
US10041966B2 (en) 2012-09-21 2018-08-07 Continental Automotive France Method for estimating the speed of an engine in a predefined position
CN113864047A (zh) * 2021-06-18 2021-12-31 广州柴油机厂股份有限公司 一种确定飞轮上止点记号的方法

Also Published As

Publication number Publication date
DE102008042980A1 (de) 2009-11-12

Similar Documents

Publication Publication Date Title
DE102008054690B4 (de) Verfahren und Vorrichtung zur Kalibrierung von Teileinspritzungen in einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs
DE102004048957B4 (de) Kraftstoffversorgungseinrichtung für Brennkraftmaschinen
EP1884646A2 (fr) Procédé de commande dýun moteur à combustion interne
EP1561937B1 (fr) Procédé de command d'un injecteur de moteur à combustion interne
DE102013220589B3 (de) Verfahren zum Betrieb einer Brennkraftmaschine sowie Einrichtung zum Steuern und Regeln einer Brennkraftmaschine, Einspritzsystem und Brennkraftmaschine
DE102006043678A1 (de) Vorrichtung und Verfahren zum Betreiben einer Brennkraftmaschine
DE102004051122A1 (de) Common-Rail-Kraftstoffeinspritzsystem
EP2142785B1 (fr) Procédé et dispositif de commande d'injection d'un moteur à combustion interne
DE102014223322A1 (de) Verfahren zur Erkennung der Pumpenorientierung einer Kraftstoffhochdruckpumpe
EP1741912A2 (fr) Méthode et dispositif de commande d'un système d'injection de carburant pour un moteur à combustion interne d'un véhicule automobile
DE102014107903A1 (de) Technik zur Bestimmung des Einspritzverhaltens eines Kraftstoffinjektors
DE19726757A1 (de) Verfahren zur Steuerung und/oder Regelung einer mit mehreren Brennräumen versehenen Brennkraftmaschine
EP2113646A1 (fr) Procédé de détermination de la position d'un point mort supérieur d'un moteur à combustion interne
DE102006034513B3 (de) Verfahren zur Erkennung einer Voreinspritzung
DE19908678C5 (de) Steuerung einer Kraftstoff direkteinspritzenden Brennkraftmaschine eines Kraftfahrzeugs insbesondere im Startbetrieb
DE102014211314A1 (de) Verfahren zum Korrigieren einer pumpenverursachten Abweichung einer Ist-Einspritzmenge von einer Soll-Einspritzmenge
DE10036772A1 (de) Verfahren zum Betreiben eines Kraftstoffzumesssystems einer direkteinspritzenden Brennkraftmaschine
DE10342130A1 (de) Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
EP1266134A1 (fr) Procede pour faire fonctionner un moteur a combustion interne
DE10252399B4 (de) Verfahren zur Regelung einer Brennkraftmaschinen-Generator-Einheit
EP1369573B1 (fr) Procédé pour faire fonctionner un système d'injection de carburant pour moteurs à combustion interne
DE102006006823B3 (de) Verfahren und Vorrichtung zum Einspritzen von Kraftstoff
DE102008002216A1 (de) Verfahren zum Betreiben eines Einspritzsystems mit mindestens zwei Rails für eine Brennkraftmaschine
EP1464819A2 (fr) Procédé d'exploitation d'un moteur à combustion interne
DE102008016662A1 (de) Verfahren und Einrichtung zum Einspritzen von Kraftstoff in einen Kraftfahrzeugmotor

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100505