EP1058774B1 - Dispositif pour ajuster la trajectoire de mouvement des soupapes d'echange de gaz d'un moteur a combustion interne - Google Patents

Dispositif pour ajuster la trajectoire de mouvement des soupapes d'echange de gaz d'un moteur a combustion interne Download PDF

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Publication number
EP1058774B1
EP1058774B1 EP99908943A EP99908943A EP1058774B1 EP 1058774 B1 EP1058774 B1 EP 1058774B1 EP 99908943 A EP99908943 A EP 99908943A EP 99908943 A EP99908943 A EP 99908943A EP 1058774 B1 EP1058774 B1 EP 1058774B1
Authority
EP
European Patent Office
Prior art keywords
camshaft
control signal
adjustment
actuator
totz
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.)
Expired - Lifetime
Application number
EP99908943A
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German (de)
English (en)
Other versions
EP1058774A1 (fr
Inventor
Hong Zhang
Gerd RÖSEL
Erhard Otto
Wolfgang Schulte
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.)
Bayerische Motoren Werke AG
Siemens AG
Original Assignee
Bayerische Motoren Werke AG
Siemens AG
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 Bayerische Motoren Werke AG, Siemens AG filed Critical Bayerische Motoren Werke AG
Publication of EP1058774A1 publication Critical patent/EP1058774A1/fr
Application granted granted Critical
Publication of EP1058774B1 publication Critical patent/EP1058774B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
    • F01L1/34406—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
    • F01L2001/34443—Cleaning control of oil control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2201/00—Electronic control systems; Apparatus or methods therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/05—Timing control under consideration of oil condition

Definitions

  • the invention relates to a device for adjusting the Movement course of the gas exchange valves of an internal combustion engine according to the preamble of claim 1.
  • GB-A-2 288 037 describes a setting device the course of movement of the gas exchange valves of an internal combustion engine known with a camshaft that has a regulator, which is an actuating signal for an actuator of an actuating device generated for adjusting the camshaft. Furthermore is a feedforward control is provided which additively the control signal corrected. From JP-A-60 190610 A is a device for setting the course of movement of the gas exchange valves an internal combustion engine with a camshaft known.
  • the object of the invention is the known device such to further develop that comfortable operation of the internal combustion engine, also in non-stationary operation and with long dead times the establishment, with a low at the same time Fuel consumption and high performance is ensured.
  • the object is achieved by the features of patent claim 1.
  • the solution is characterized in that the course of movement the gas exchange valves surprisingly simple very can be adjusted quickly. So each one in the current Operating state of the internal combustion engine desired course of motion of the gas exchange valves are guaranteed. Moreover the controller only needs inaccuracies in the feedforward control compensate.
  • An internal combustion engine ( Figure 1) includes a cylinder 1 a piston 11 and a connecting rod 12.
  • the connecting rod 12 is connected to the piston 11 and a crankshaft 2.
  • a first gear 21 is arranged on the crankshaft 2.
  • the first gear 21 is connected to a second chain 21a
  • Gear 31 mechanically coupled on a camshaft 3 is arranged.
  • the camshaft 3 has cams 32, 33 on, which act on gas exchange valves 41, 42.
  • the internal combustion engine is shown in Figure 1 with a cylinder. Of course, the internal combustion engine can also have multiple cylinders.
  • An actuating device 5 for setting the course of movement the gas exchange valve is assigned to the internal combustion engine.
  • the actuating device 5 has a mechanical adjustment part 51, the hydraulic lines 52, 53 with an actuator 54, which is preferably designed as a hydraulic three-way valve is connected.
  • the actuator is with a High pressure hydraulic line 55 and a low pressure hydraulic line 56 connected to an oil reservoir, which if necessary an oil pump is also assigned.
  • a control device 6 is provided, which is assigned to sensors are, which record different measured variables and each determine the measured value of the measured variable.
  • the control device 5 determines a control signal TVAN_S depending on the measured variables for the actuator 54.
  • the sensors are designed as a speed sensor 71 which a speed N and a crankshaft angle KW of the crankshaft 2 detects a camshaft angle sensor 72, the camshaft angle NW detects an air mass meter 73, the one Air mass flow MAF detected, or an oil temperature sensor 74, which detects the oil temperature TOEL.
  • a speed sensor 71 which a speed N and a crankshaft angle KW of the crankshaft 2 detects a camshaft angle sensor 72
  • the camshaft angle NW detects an air mass meter 73
  • the one Air mass flow MAF detected detected
  • an oil temperature sensor 74 which detects the oil temperature TOEL.
  • the invention can be any subset of the sensors mentioned or additional sensors may also be present.
  • FIG. 2 shows the camshaft 3 with the mechanical adjustment part 51 in a sectional view.
  • the mechanical Adjustment part 51 is assigned to second gear 31, which is positively connected to a third gear 511 is.
  • the third gear 511 has helical teeth, in an assigned helical toothing of a ring gear 512 intervenes.
  • the sprocket faces inward On a straight toothing, which in a corresponding trained toothing of a fourth gear 583 intervenes.
  • the ring gear 512 is axially displaced to the camshaft.
  • a spring 514 is provided for resetting the Sprocket in a predetermined rest position, if none forces caused by the oil pressure in the lines act on the gear rim 512.
  • the adjusting device 5 enables a phase adjustment of the Camshaft 3 relative to the crankshaft 4. So the phase continuously adjusted within a specified range become. The start and end of the stroke of the gas exchange valves can thus be varied.
  • a pilot control has a summing point S1, in which the difference NWSOLL_DIF of the nominal value NWSOLL and an estimated value NW_MOD_O_TOTZ the adjustment of the camshaft without consideration the dead time TOTZ_VANOS of the actuating device is determined.
  • a pilot control value T_VAN of the duration of the energization of the Three-two-way valve 54 determined. The determination of the input tax value T_VAN takes place cyclically with a given one Cycle time, preferably speed synchronous.
  • a block B2 forms the route behavior of the actuating device 5 and includes, for example, an integrator that is dependent from the pilot control value T_VAN and the cycle duration and the speed N and a determined adjustment speed of the camshaft the estimated value NW_MOD_O_TOTZ of the adjustment of the Camshaft determined without taking the dead time TOTZ_VANOS into account.
  • the dead time TOTZ_VANOS is caused by the Excitation time of the electromagnets of the three-two-way valve, the behavior of the hydraulic system with different oil viscosities, of the oil pressure build-up at low engine speeds N and the design of the three-two-way valve itself.
  • an estimate NW_MOD of the adjustment the camshaft taking into account the dead time of the actuating device 5 determined. This depends on the dead time TOTZ_VANOS the actuating device 5, which consists of a map depending on the speed N, the air mass flow MAF and the oil temperature TOIL is determined.
  • a second summing point S2 becomes the difference between the measured value NWIST and the Estimated NW_MOD of the adjustment of the camshaft determined.
  • the measured value NWIST of the adjustment of the camshaft 3 becomes dependent on the detected crankshaft angle KW and camshaft angle NW determined.
  • a controller is provided that depends on the difference NW_DIF_REG of the actual value NWIST and the estimated value NW_MOD and the dead time TOTZ_VANOS a control value TVAN_REG the duration of the energization of the three-two-way valve determined.
  • the controller is preferably a P controller educated. But it can also be used as a PI or PID or formed as another controller known to those skilled in the art his.
  • the controller is preferably designed to be adaptive, in such a way that the controller parameters are dependent on the Dead time TOTZ_VANOS.
  • a block B5 is preferably provided, which is an integrator which integrates the control value TVAN_REG until it has a minimal time period T_MIN_VAN of energizing the three-two-way valve exceeds. If the integrated control value T_VAN_REG_INT exceeds the minimum time period T_MIN_VAN, this integrated control value is sent to a third summing point S3 output and the integrator reset. Thereby is achieved that even small control differences are corrected can, which lead to energization times, which in Tolerance range of the actuating device 5 are.
  • block B6 it is checked whether the difference in the pilot value T_VAN and the integrated control value T_VAN_REG_INT the duration of the energization of the three-two-way valve has an amount greater than the minimum Duration T_MIN_V of energizing the three-two-way valve. Only in this case will the respective electromagnet of the three-two-way valve for the duration TVAN_S. This increases the lifespan of the actuator 5, particularly the three-two-way valve 54, since it energized less frequently during operation of the internal combustion engine becomes.
  • the controller of block B4 only needs to be inaccurate Compensate feedforward control. So the adjustment can be adjusted the camshaft 3 take place very quickly.
  • the control device is also characterized by this that the feedforward control determines the position independently of the system dead time with a very high, usually maximum adjustment speed implements.
  • the scope of Fluctuations in the dead time for the controller is high. This increases the robustness of the control loop significantly without one measurable deterioration in control quality and control speed.
  • the adjustment part 51 also be designed such that the stroke course of the gas exchange valves is variable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un dispositif pour ajuster la trajectoire de mouvement des soupapes d'échange de gaz d'un moteur à combustion interne comportant un arbre à cames. Ce dispositif comprend un régulateur qui produit un signal de réglage pour un élément de réglage (54) d'un dispositif de réglage (5) servant à déplacer l'arbre à came (3). Il est prévu une commande pilote qui corrige de manière additive le signal de réglage.

Claims (6)

  1. Dispositif pour la régulation du déroulement du mouvement des soupapes de changement des gaz d'un moteur à combustion interne comportant un arbre à cames (3), qui présente un régulateur (B4), lequel génère un signal de régulation pour un composant de régulation (54) d'un dispositif de régulation (5) pour le réglage de l'arbre à cames (3), et dans lequel est prévue une commande pilote qui corrige de manière additive le signal de régulation, le dispositif de régulation (5) étant un système présentant des temps morts,
    caractérisé en ce que
    la commande pilote détermine une valeur estimée (NW_MOD_O_TOTZ) du réglage de l'arbre à cames (3) sans tenir compte du temps mort (TOTZ_VANOS) du dispositif de régulation (5) et en ce que la commande pilote corrige le signal de régulation en fonction de la valeur estimée (NW_MOD_O_TOTZ) et d'une valeur de consigne prédéterminée (NWSOLL).
  2. Dispositif selon la revendication 1, caractérisé en ce que la commande pilote corrige le signal de régulation en fonction d'une grandeur de charge, du nombre de tours (N) et de la température de l'huile (TOEL).
  3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le régulateur (B4) détermine le signal de régulation en fonction d'une valeur mesurée (NWIST) et d'une valeur estimée (NW_MOD) du réglage de l'arbre à cames (3) en tenant compte du temps mort (TOTZ_VANOS).
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu un intégrateur (B5) qui intègre le signal de régulation et le transmet au composant de régulation seulement lorsque le signal de régulation intégré a dépassé une valeur seuil prédéterminée.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le signal de régulation est déterminé de façon cyclique, et ceci de façon synchrone avec le nombre de tours, et en ce qu'il est prévu un modèle physique du dispositif de régulation au moyen duquel la valeur estimée du réglage est déterminée en tenant compte du temps de cycle.
  6. Dispositif selon la revendication 5, caractérisé en ce que la valeur estimée est déterminée en fonction du nombre de tours (N) et de la vitesse de réglage.
EP99908943A 1998-02-27 1999-02-24 Dispositif pour ajuster la trajectoire de mouvement des soupapes d'echange de gaz d'un moteur a combustion interne Expired - Lifetime EP1058774B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19808354 1998-02-27
DE19808354 1998-02-27
PCT/EP1999/001180 WO1999043930A1 (fr) 1998-02-27 1999-02-24 Dispositif pour ajuster la trajectoire de mouvement des soupapes d'echange de gaz d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1058774A1 EP1058774A1 (fr) 2000-12-13
EP1058774B1 true EP1058774B1 (fr) 2003-05-02

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ID=7859131

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EP99908943A Expired - Lifetime EP1058774B1 (fr) 1998-02-27 1999-02-24 Dispositif pour ajuster la trajectoire de mouvement des soupapes d'echange de gaz d'un moteur a combustion interne

Country Status (6)

Country Link
US (1) US6318314B1 (fr)
EP (1) EP1058774B1 (fr)
JP (1) JP4316797B2 (fr)
DE (1) DE59905327D1 (fr)
ES (1) ES2198899T3 (fr)
WO (1) WO1999043930A1 (fr)

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JP3701191B2 (ja) * 2000-11-17 2005-09-28 三菱電機株式会社 内燃機関のバルブタイミング制御装置
DE10108055C1 (de) * 2001-02-20 2002-08-08 Siemens Ag Verfahren zum Steuern einer Brennkraftmaschine
US6810843B2 (en) * 2002-06-17 2004-11-02 Borgwarner Inc. Control method for achieving expected VCT actuation rate using set point rate limiter
US6766776B2 (en) * 2002-06-17 2004-07-27 Borgwarner Inc. Control method for preventing integrator wind-up when operating VCT at or near its physical stops
DE10232942B4 (de) * 2002-07-19 2004-08-26 Siemens Ag Verfahren zur Steuerung einer gleichmäßigen Drehmomentabgabe einer Brennkraftmaschine mit Abgasturbolader
JP3849618B2 (ja) * 2002-08-30 2006-11-22 トヨタ自動車株式会社 内燃機関の動弁装置の制御装置
DE10303705B4 (de) * 2003-01-30 2006-08-31 Siemens Ag Verfahren zum Betreiben einer mit Kraftstoffdirekteinspritzung arbeitenden Brennkraftmaschine
JP4225186B2 (ja) * 2003-11-19 2009-02-18 トヨタ自動車株式会社 内燃機関のバルブタイミング制御装置
EP1553265B1 (fr) * 2004-01-07 2007-08-22 Ford Global Technologies, LLC Système et méthode d'estimation d'un modèle d'opération d'un système d'huile de moteur de véhicule
EP1605140B1 (fr) * 2004-06-09 2016-11-02 Schaeffler Technologies AG & Co. KG Déphaseur d'arbre à cames
DE102004031295B4 (de) * 2004-06-29 2008-03-13 Audi Ag Verfahren zum Durchführen von Verstellvorgängen für Ventile bei Brennkraftmaschinen mit mehreren Brennkammern sowie Brennkraftmaschine zur Durchführung des Vefahrens
DE112013002562A5 (de) 2012-05-18 2015-02-05 Schaeffler Technologies Gmbh & Co. Kg Nockenwelleneinheit

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Also Published As

Publication number Publication date
ES2198899T3 (es) 2004-02-01
JP2002505398A (ja) 2002-02-19
EP1058774A1 (fr) 2000-12-13
US6318314B1 (en) 2001-11-20
JP4316797B2 (ja) 2009-08-19
WO1999043930A1 (fr) 1999-09-02
DE59905327D1 (de) 2003-06-05

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