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WO2013068367A1 - Procédé de reconnaissance des cylindres destiné à un moteur à combustion interne - Google Patents

Procédé de reconnaissance des cylindres destiné à un moteur à combustion interne Download PDF

Info

Publication number
WO2013068367A1
WO2013068367A1 PCT/EP2012/071964 EP2012071964W WO2013068367A1 WO 2013068367 A1 WO2013068367 A1 WO 2013068367A1 EP 2012071964 W EP2012071964 W EP 2012071964W WO 2013068367 A1 WO2013068367 A1 WO 2013068367A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
valve
intake
cylinders
pressure
Prior art date
Application number
PCT/EP2012/071964
Other languages
German (de)
English (en)
Inventor
Hong Zhang
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2013068367A1 publication Critical patent/WO2013068367A1/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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0203—Variable control of intake and exhaust valves
    • F02D13/0215—Variable control of intake and exhaust valves changing the valve timing only
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • 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
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure

Definitions

  • the invention relates to a method for cylinder recognition in an internal combustion engine and to a control unit.
  • the fuel injection and the ignition for all the cylinders must take place at respectively predetermined piston positions and rotational angles of the crankshaft of the internal combustion engine, i. at the times when each piston of the cylinder occupies a respective predetermined position with respect to the top dead center (TDC). This is particularly important when starting the internal combustion engine in order to decide in which cylinder the first injection must be made.
  • TDC top dead center
  • the object of the invention is to provide a method and a control unit with which cylinder recognition in an internal combustion engine can be made possible without the use of a camshaft sensor.
  • 1 is a schematic representation of an internal combustion engine with an electronic control unit
  • Fig. 2 is a schematic representation of a cylinder of a
  • Fig. 3 is a schematic representation of a hydraulic
  • FIG. 1 shows a schematic representation of an internal combustion engine 1 with four cylinders I, II, III, IV, with a crankshaft 3, the rotational movements of which are detected by a crankshaft sensor 4.
  • the crankshaft 3 has a corresponding mark, which is detected by means of the crankshaft sensor 4 and can be determined by its position when the piston of the first and the piston of the third cylinder I, III are in a top dead center.
  • the crankshaft sensor 4 is connected to a control unit 5 in connection.
  • the control unit 5 is in each case in communication with valve drives of the intake valves of the cylinders.
  • the position of the inlet valves can be adjusted via the valve drive variable and preferably independent of the position of a camshaft.
  • the exhaust valves can be controlled via a camshaft.
  • the control unit 5 is designed to control a fuel injection and the valve drives of the intake valves depending on parameters of the internal combustion engine and a driver's request.
  • the firing order of the individual cylinders is fixed, wherein in the described four-cylinder four-stroke engine, for example, the ignition in the order cylinder I - cylinder III - cylinder IV - cylinder II takes place.
  • An engine cycle extends over two full crankshaft revolutions of 720 ° crankshaft angle. Without a camshaft sensor alone can not be clearly determined due to the position of the crankshaft, whether the piston of the first cylinder I at top dead center of the ignition (ZOT) or at top dead center of air exchange (LWOT).
  • ZOT top dead center of the ignition
  • LWOT top dead center of air exchange
  • the individual cylinders go through the four work cycles of an engine cycle: compression, combustion, exhaust and suction.
  • FIG. 2 shows a schematic representation of a cylinder of the internal combustion engine 1 which has an inlet valve 10 and an outlet valve 11.
  • the intake valve 10 connects an intake tract 13 with a cylinder chamber 15.
  • the exhaust valve 11 connects the cylinder chamber 15 with an exhaust gas tract 14
  • Cylinder space is a piston 16 movably mounted and connected via a connecting rod 17 with the crankshaft 18.
  • the intake valve 10 is movable via a valve drive 19 regardless of a position of a camshaft.
  • the valve drive 19 is connected via a control line 26 to the control unit 5 in
  • the cylinder has a spark plug 6.
  • an injection valve 7 is provided to inject fuel into the cylinder.
  • the control unit 5 detects by the crankshaft sensor 4, the time at which the piston of the first and the piston of the third cylinder I, III are in the region of top dead center.
  • injectors are provided for the cylinders, which are controlled by the control unit.
  • FIG. 3 shows, in a schematic representation, the valve drive 19, which has a camshaft 21 with a cam 22.
  • the camshaft 21 is associated with a pump 23.
  • the pump 23 is filled with a hydraulic fluid and has a hydraulic line 24, which is in operative connection with the inlet valve 10.
  • a valve 25 is connected to the line 24, which is connected via a second control line 27 to the control unit 5.
  • the valve drive 19 functions in such a way that, in the intake stroke of the cylinder, the cam 22 actuates the pump 23 and generates an increased pressure in the line 24.
  • the pump 23 is connected via a feed line 29 to a liquid reservoir via which hydraulic fluid is sucked in for compression.
  • valve 25 controls a connection between the conduit 24 and a drain 28 which is connected to the liquid reservoir. Is the valve 25 closed, the inlet valve 10 is moved from a closed position to an open position via the pressure in the line 24.
  • the inlet valve 10 is biased, for example via a spring in the closed position.
  • the pressure in the conduit 24 can be influenced and thereby controlled the opening process of the intake valve 10, in particular prevented.
  • the opening operation of the intake valve 10 can be varied only in an intake stroke to which the cam 22 of the camshaft 21 presses on the pump 23. Thus, an opening of the
  • Inlet valve 10 only possible in an intake stroke of the respective cylinder.
  • the system for driving an intake valve described in Fig. 3 is known under the brand Uni-Air by FIAT. Instead of the hydraulic power transmission from the camshaft to the intake valve, any other type of power transmission can be used.
  • the control unit 5 recognizes that the pistons of the first and third cylinders I, III are at top dead center , the first cylinder is connected to the intake tract 13 via an opening of the intake valve 10.
  • a pressure sensor 20 is provided, which is connected to the control unit 5.
  • the pressure in the intake tract 13 is detected by the pressure sensor 20 and evaluated by the control unit 5. If the control unit 5 detects that the pressure in the intake tract 13 drops below a predetermined reference pressure, it is recognized that the first cylinder I is in the intake stroke and draws in air.
  • the reference pressure corresponds to a pressure in the intake tract 13 without opening the cylinder I.
  • the control unit 5 recognizes that the first cylinder I in FIG Combustion cycle is located. This automatically means made sure that the third cylinder III is in the intake stroke. If the pressure does not drop, then the first cylinder I is in the combustion cycle and the third cylinder III is in the intake stroke.
  • a unique detection of the phase of the cylinder is possible without a camshaft sensor.
  • the phases of the further cylinders are fixed with respect to the phase of the first cylinder and thus known.
  • the described method offers the possibility, in the case of a variable valve drive, which is dependent on the rotational position of the camshaft, of clearly recognizing the position of the crankshaft, which cylinder is in an intake stroke or in a combustion stroke.
  • the method can also be applied to the cylinders II, IV in an analogous manner.
  • the injection and ignition can be synchronized according to the control unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé et un dispositif de commande permettant une reconnaissance des cylindres, destinés à un moteur à combustion interne comportant plusieurs cylindres, chacun desdits cylindres comportant au moins une soupape d'admission et au moins une soupape d'échappement. Le fonctionnement de l'organe de commande de la soupape d'admission est variable en fonction du temps, ledit organe de commande de soupape étant activé par un arbre à cames pendant une phase d'admission du cylindre. Un capteur permet de détecter un angle décrivant la rotation du vilebrequin et étant caractérisé par le fait que deux des plusieurs pistons desdits cylindres se trouvent à un point mort supérieur. Ensuite, la soupape d'admission de l'un des deux cylindres est ouverte au moyen dudit dispositif de commande dont le fonctionnement est variable. Ensuite, on détecte une pression dans la partie d'admission, ladite pression permettant de reconnaître si le cylindre se trouve en temps de combustion ou en temps d'admission.
PCT/EP2012/071964 2011-11-10 2012-11-07 Procédé de reconnaissance des cylindres destiné à un moteur à combustion interne WO2013068367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110086124 DE102011086124B3 (de) 2011-11-10 2011-11-10 Verfahren zur Zylindererkennung bei einer Brennkraftmaschine und Steuergerät
DE102011086124.6 2011-11-10

Publications (1)

Publication Number Publication Date
WO2013068367A1 true WO2013068367A1 (fr) 2013-05-16

Family

ID=47178649

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/071964 WO2013068367A1 (fr) 2011-11-10 2012-11-07 Procédé de reconnaissance des cylindres destiné à un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102011086124B3 (fr)
WO (1) WO2013068367A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107762584A (zh) * 2016-08-18 2018-03-06 福特环球技术公司 用于调节凸轮轴的方法和系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0640762A1 (fr) 1993-08-26 1995-03-01 Siemens Aktiengesellschaft Synchronisation de cylindre d'un moteur à combustion interne à plusieurs cylindres par détection d'un raté de combustion spécifique
DE19638010A1 (de) * 1996-09-18 1998-03-19 Bosch Gmbh Robert Verfahren zur Bestimmung der Phasenlage bei einer 4-Takt Brennkraftmaschine
DE19804816A1 (de) * 1997-02-13 2000-09-28 Honda Motor Co Ltd Taktidentifiziereinheit für einen Viertaktmotor
US20040010363A1 (en) * 2002-07-11 2004-01-15 Mitsubishi Denki Kabushiki Kaisha Cylinder indentification apparatus for VVT controlled internal combustion engine
US20060118086A1 (en) * 2003-08-14 2006-06-08 Electrojet, Inc. Engine timing control with intake air pressure sensor
EP1707937A1 (fr) * 2005-03-29 2006-10-04 HONDA MOTOR CO., Ltd. Dispositif de détermination de la position angulaire d'un moteur à quatre temps
GB2471890A (en) * 2009-07-17 2011-01-19 Gm Global Tech Operations Inc Control unit for synchronizing fuel injection in an internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0640762A1 (fr) 1993-08-26 1995-03-01 Siemens Aktiengesellschaft Synchronisation de cylindre d'un moteur à combustion interne à plusieurs cylindres par détection d'un raté de combustion spécifique
DE19638010A1 (de) * 1996-09-18 1998-03-19 Bosch Gmbh Robert Verfahren zur Bestimmung der Phasenlage bei einer 4-Takt Brennkraftmaschine
DE19804816A1 (de) * 1997-02-13 2000-09-28 Honda Motor Co Ltd Taktidentifiziereinheit für einen Viertaktmotor
US20040010363A1 (en) * 2002-07-11 2004-01-15 Mitsubishi Denki Kabushiki Kaisha Cylinder indentification apparatus for VVT controlled internal combustion engine
US20060118086A1 (en) * 2003-08-14 2006-06-08 Electrojet, Inc. Engine timing control with intake air pressure sensor
EP1707937A1 (fr) * 2005-03-29 2006-10-04 HONDA MOTOR CO., Ltd. Dispositif de détermination de la position angulaire d'un moteur à quatre temps
GB2471890A (en) * 2009-07-17 2011-01-19 Gm Global Tech Operations Inc Control unit for synchronizing fuel injection in an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107762584A (zh) * 2016-08-18 2018-03-06 福特环球技术公司 用于调节凸轮轴的方法和系统

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