EP2721262B1 - Dispositif de commande des soupapes d'un moteur à combustion interne pour un véhicule - Google Patents

Dispositif de commande des soupapes d'un moteur à combustion interne pour un véhicule Download PDF

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Publication number
EP2721262B1
EP2721262B1 EP11805414.7A EP11805414A EP2721262B1 EP 2721262 B1 EP2721262 B1 EP 2721262B1 EP 11805414 A EP11805414 A EP 11805414A EP 2721262 B1 EP2721262 B1 EP 2721262B1
Authority
EP
European Patent Office
Prior art keywords
actuator
actuators
switching direction
internal combustion
combustion engine
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.)
Not-in-force
Application number
EP11805414.7A
Other languages
German (de)
English (en)
Other versions
EP2721262A1 (fr
Inventor
Thomas Stolk
Alexander Von Gaisberg-Helfenberg
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.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP2721262A1 publication Critical patent/EP2721262A1/fr
Application granted granted Critical
Publication of EP2721262B1 publication Critical patent/EP2721262B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve

Definitions

  • the invention relates to an internal combustion engine valve drive device according to the preamble of claim 1.
  • From the DE 10 2009 006 632 A1 is already an internal combustion engine valve drive device for a motor vehicle, with at least one shift gate, which is intended to convert the rotation switching a rotational movement of at least one cam element in an axial movement of the at least one cam element, with at least one first actuator, which is provided by an operative connection with the Shift gate to move a first cam member axially in a switching direction, with a second actuator, which is intended to axially displace a second cam member in an opposite switching direction by an operative connection with the shift gate, and with a control and / or regulating unit, known.
  • the invention is in particular the object of reducing the cost of the internal combustion engine valve drive device. This object is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.
  • the invention is based on an internal combustion engine valve drive device for a motor vehicle, with at least one shift gate, which is intended to convert a rotational movement of at least one cam element into axial movement of the at least one cam element for stroke switching, with at least one first actuator provided for this purpose Active connection with the shift gate to move a first cam member axially in a switching direction, with at least one second actuator, which is intended to axially displace a second cam member in the same switching direction by an operative connection with the shift gate, and with a control and / or control unit.
  • control and / or regulating unit is provided for simultaneously controlling and / or monitoring the at least two actuators for the axial displacement of the at least two cam elements in the same switching direction.
  • This can be a particularly advantageous control and / or monitoring of all actuators, which are provided for the axial displacement of the cam elements in the same switching direction, i. at least the first actuator and the second actuator can be realized, whereby all actuators for initializing a switching direction can be simultaneously controlled and / or monitored and thus a coding of the switching of the cam elements can be realized.
  • all actuators can be deactivated in case of failure of an actuator, whereby either all cam elements or none of the cam elements are moved axially and thus only unique operating conditions can be realized.
  • a faulty and / or incomplete axial displacement of the cam elements, and thus a faulty and / or incomplete Hubumscnies, can be avoided.
  • control and / or regulating unit is provided to simultaneously control and / or monitor all the actuators provided for the same switching direction.
  • actuators provided for controlling and / or monitoring of the actuators control and / or regulating unit can be simplified, which in particular a number of control and / or output stages or outputs of the control and / or control unit can be reduced. Thereby, costs of the engine valve driving device can be reduced, thus providing a reliable and inexpensive engine valve driving device.
  • the internal combustion engine valve drive device can also have further actuators provided for the same shift direction, which are respectively provided for this purpose, a further cam element which is additional to the first cam element and the second cam element by an operative connection with the shift gate the shift direction, which corresponds to the provided by the first actuator and the second actuator switching direction to move axially.
  • all actuators should be understood in particular as meaning all actuators, ie at least the first actuator and the second actuator, which are assigned to a same camshaft, for example an exhaust camshaft or an intake camshaft for shifting in at least one shift direction, and thus all actuators which are provided for Hubumscrien in at least one switching direction on a same camshaft.
  • a “shift gate” should be understood to mean a shift unit for the axial adjustment of at least one cam element, which has at least one slide track, which is intended to convert a rotational movement into an axial adjustment force.
  • a “slide track” is to be understood in particular as a track for at least one-sided, preferably two-sided, positive guidance of a shift element, in particular a shift pin.
  • the slide track is preferably in the form of a web, in the form of a slot and / or in the form of a groove.
  • the switching element is preferably designed in the form of a bridge shoe engaging around the bridge, in the form of a pin engaging in the slot and / or in the form of a pin guided in the slot.
  • a “stroke changeover” is to be understood as meaning, in particular, a discrete switchover between at least two valve actuation curves which define an actuation of a gas exchange valve of an internal combustion engine having the internal combustion engine valve drive device.
  • a “rotational movement and / or axial movement” is to be understood in particular a rotational movement and / or axial movement with respect to a rotational axis of the camshaft.
  • a “cam element” is to be understood in particular an element which has at least one cam for actuating at least one gas exchange valve of the internal combustion engine and / or which forms the at least one valve actuation curve.
  • An “operative connection” is to be understood, in particular, as meaning a form-locking operative connection, by means of which the rotational movement is converted into the axial movement.
  • a “shift direction” is to be understood in particular with respect to the axis of rotation of the camshaft axial direction of movement of a cam element, wherein by a movement of the cam member in the direction of movement, the Hubumscaria and by the operative connection of the actuator with the shift gate, in particular with the corresponding slide track of the shift gate , is defined.
  • a “control and / or regulating unit” is to be understood in particular as a unit having at least one control unit.
  • control unit is to be understood in particular as meaning a unit having a processor unit and a memory unit as well as an operating program stored in the memory unit.
  • control and / or regulating unit can have a plurality of interconnected control units, which are preferably provided to communicate with one another via a bus system, in particular a CAN bus system.
  • a "same switching direction" is to be understood in particular an axial direction of movement of the at least two cam elements in a same direction in the sense that the valve actuation curves of a first operating mode, such as high load of the internal combustion engine, to a second operating mode, such as low load of Internal combustion engine, to be switched, with the error-free and / or complete axial displacement, and thus for error-free and / or complete Hubumscnies, all cam elements in the same or opposite axial direction of movement, in particular sequentially, must be moved.
  • a first operating mode such as high load of the internal combustion engine
  • a second operating mode such as low load of Internal combustion engine
  • all cam elements should be understood as meaning, in particular, all cam elements, ie at least the first cam element and the second cam element, which are assigned to a same camshaft, for example an exhaust camshaft or an intake camshaft, and thus all cam elements which are used to change over the stroke at the same Camshaft are provided.
  • Provisioned is to be understood in particular specially programmed, designed, equipped and / or arranged.
  • At least the first actuator and the second actuator are electrically connected in parallel or in series with each other. As a result, simultaneous control and / or monitoring can be realized particularly easily.
  • control and / or regulating unit to a control and / or output stage, which is connected simultaneously with the at least two actuators, which are provided for the axial displacement of the at least two cam elements in the same switching direction, whereby costs especially can be easily reduced.
  • a "final stage” is to be understood in particular an output-side unit, via which at least one actuator is controlled and / or monitored and / or which is intended to provide the at least one actuator for driving with sufficient power and in particular one of a microprocessor ( CPU) output signal for the at least one actuator to amplify.
  • a control stage should be understood to mean, in particular, a unit which is connected upstream of one or more output stages.
  • control and / or regulating unit is provided for axially displacing the at least two cam elements, the at least two actuators and at least one third actuator, which is provided, by an operative connection with the shift gate, the first cam element and / or axially displace the second cam member in a shift direction that is opposite to the shift direction provided by the first actuator and the second actuator to simultaneously drive and / or monitor independent of a shift direction of the actuators.
  • switching direction dependent of a switching direction
  • all actuators, no matter which switching direction they are provided are controlled and / or monitored and / or, no matter in which switching direction the cam elements are to be moved, all actuators and thus at least the first actuator, the second actuator and the third actuator is controlled and / or monitored.
  • a "switching direction provided by an actuator” should in particular be understood to mean a switching direction which results from the operative connection of the actuator with the shifting gate.
  • the internal combustion engine valve drive device has at least the third actuator, wherein the third actuator is electrically connected in parallel or in series with the first actuator and the second actuator and is provided, by an operative connection with the shift gate, the first cam element and / or the axially displacing the second cam member in a shift direction opposite to the shift direction provided by the first actuator and the second actuator.
  • the third actuator is electrically connected in parallel or in series with the first actuator and the second actuator and is provided, by an operative connection with the shift gate, the first cam element and / or the axially displacing the second cam member in a shift direction opposite to the shift direction provided by the first actuator and the second actuator.
  • the internal combustion engine valve drive device can also have further actuators provided for the same shift direction, which are respectively provided for this, another cam element by an operative connection with the shift gate in the shift direction, that provided by the first actuator and the second actuator Switching direction is opposite, to move axially.
  • control and / or output stage is connected simultaneously with the at least three actuators which are provided for the axial displacement of the at least two cam elements in the two opposite switching directions.
  • costs can be further reduced particularly simply.
  • the internal combustion engine valve drive device has at least one third actuator, which is connected electrically separated from the first actuator and the second actuator and is provided, by an operative connection with the shift gate, the first cam element and / or the second cam element in a switching direction axially displaced, which is opposite to the provided by the first actuator and the second actuator switching direction aligned.
  • a particularly advantageous internal combustion engine valve drive device can be provided, in which only the actuators that are connected to the axial Shifting the cam elements are provided in a same switching direction, jointly controlled and / or monitored, ie in which the simultaneous control and / or monitoring of the actuators per switching direction takes place.
  • electrically isolated is meant in particular that at least the third actuator is independently controlled and / or monitored independently of the first actuator and the second actuator and / or individually.
  • control and / or output stage is connected only to at least the first actuator and the second actuator, and thus only with the actuators, which are provided for the same switching direction, simultaneously, whereby only a single control and / or output stage, in particular a single output stage per switching direction, in particular independent of a number of actuators, and thus of a number of cam elements is needed.
  • the engine valve drive device has at least one fourth actuator which is connected electrically in parallel or in series with the third actuator and is intended to axially displace the first cam element or the second cam element in the switching direction by an operative connection with the shift gate that corresponds to the switching direction provided by the third actuator.
  • the first cam element and the second cam element can be moved particularly advantageously axially in the two switching directions.
  • control and / or regulating unit has a further control and / or output stage which is connected at least to the third actuator.
  • a particularly advantageous control and / or monitoring of the actuators can be realized, in which all actuators of the same switching direction simultaneously and independently of all actuators of the opposite switching direction are controlled and / or monitored.
  • the further control and / or output stage with all the actuators which are provided for the provision of a switching direction which corresponds to the provided by the third actuator switching direction, are provided, and thus at least connected to the third actuator and the fourth actuator simultaneously.
  • all actuators which are provided for the axial displacement of all cam elements in the same switching direction, ie at least the first actuator and the second actuator, and thus all actuators for initialization of a switching direction, particularly advantageous by means of only one control and / or power amplifier, in particular be driven and / or monitored simultaneously by means of only one output stage, whereby costs of the internal combustion engine valve drive device can be reduced.
  • the FIG. 1 schematically shows an internal combustion engine valve drive device for a motor vehicle.
  • the engine valve drive device is configured as an automotive internal combustion engine valve drive device.
  • the internal combustion engine valve drive device has a camshaft 24a.
  • the camshaft 24a is formed as an intake camshaft.
  • the internal combustion engine valve drive device has a further, not shown exhaust camshaft, which can basically be controlled or monitored analogous to the camshaft 24a.
  • This camshaft, not shown, is formed as an exhaust camshaft.
  • the engine valve drive device may have further analog controlled or monitored camshafts.
  • the camshaft 24a has two axially displaceable cam elements 12a, 13a.
  • the cam elements 12a, 13a are displaceable along a rotation axis 25a of the camshaft 24a.
  • the cam elements 12a, 13a are each formed as a cam carrier.
  • On each of the cam elements 12a, 13a two cams 26a, 27a, 28a, 29a are arranged, each having two partial cams with different valve actuation curves.
  • the partial cams of each of the cams 26a, 27a, 28a, 29a are each arranged immediately adjacent.
  • the cam elements 12a, 13a thus each have two discrete switching positions in which a different valve lift is connected for one or more cylinders associated with the corresponding cam element 12a, 13a.
  • the cams 26a, 27a, 28a, 29a may be integrally formed with the respective cam element 12a, 13a or arranged to be displaceable and non-rotatable thereon.
  • the camshaft 24a can also have further cam elements, with at least one cam.
  • the camshaft 24a comprises a drive shaft 30a.
  • the drive shaft 30a includes a crankshaft connection for connection to a crankshaft, not shown, of the internal combustion engine.
  • the crankshaft connection can be formed by means of a camshaft adjuster which is provided to set a phase position between the camshaft 24a and the crankshaft.
  • the cam elements 12a, 13a are axially displaceable and non-rotatably mounted on the drive shaft 30a.
  • the drive shaft 30a has a straight toothing on its outer circumference.
  • the cam elements 12a, 13a have on their inner circumference a corresponding straight toothing, which engages in the straight toothing of the drive shaft 30a.
  • the shift gate 10a For Hubumsciens the internal combustion engine valve drive device on a shift gate 10a, which is intended to convert a rotational movement 11a of the cam elements 12a, 13a in an axial movement 14a of the cam elements 12a, 13a.
  • the shift gate 10a is intended to axially displace the two cam elements 12a, 13a sequentially in a switching operation.
  • the shift gate 10a comprises four slide tracks 31a, 32a, 33a, 34a.
  • the slide tracks 31a, 32a, 33a, 34a each extend around a cam element 12a, 13a, and thus about the axis of rotation 25a.
  • the slide tracks 31a, 32a are associated with the first cam element 12a.
  • the slide tracks 33a, 34a are associated with the second cam element 13a. They are arranged on the second cam element 13a.
  • the slide tracks 31a, 33a are formed identical to one another with respect to the associated cam element 12a, 13a, and the slide tracks 32a, 34a are formed identical to one another with respect to the associated cam element 12a, 13a.
  • the slide track 31a is provided to axially displace the first cam member 12a in the shift direction 16a
  • the slide track 33a is provided to axially displace the second cam member 13a in the same shift direction 16a.
  • the slide tracks 31 a, 33 a are provided for the switching direction 16 a.
  • the slide track 32a is provided to axially displace the first cam member 12a in the shift direction 21a and the slide track 34a is provided to axially displace the second cam member 13a in the same shift direction 21a.
  • the slide tracks 32a, 34a are provided for the switching direction 21a.
  • the engine valve drive device has four actuators 15a, 17a, 20a, 22a.
  • the actuators 15a, 17a are provided for the same switching direction 16a and are referred to hereinafter as the first actuator 15a and the second actuator 17a. They provide the same switching direction 16a.
  • the first actuator 15a is provided for axially displacing the first cam element 12a in the switching direction 16a by an operative connection with the slide track 31a of the shift gate 10a.
  • the second actuator 17a is provided to axially displace the second cam element 13a in the same switching direction 16a by an operative connection with the slide track 33a of the shift gate 10a.
  • the actuators 20a, 22a are provided for the same switching direction 21a, which is opposite to the switching direction 16a, and are referred to hereinafter as the third actuator 20a and the fourth actuator 22a. They provide the same switching direction 21a, which is opposite to the switching direction 16a provided by the first actuator 15a and the second actuator 17a.
  • the third actuator 20a is provided to axially displace the first cam element 12a in the switching direction 21a by an operative connection with the slide track 32a of the shift gate 10a.
  • the fourth actuator 22a is provided to axially displace the second cam element 13a in the same switching direction 21a by an operative connection with the slide track 34a of the shift gate 10a.
  • each of the four actuators 15a, 17a, 20a, 22a has a switching pin.
  • the switching pins are the Actuators 15a, 17a, 20a, 22a respectively for engagement in the corresponding slide track 31 a, 32 a, 33 a, 34 a provided.
  • the actuators 15a, 17a, 20a, 22a each have a stator housing, which is fixedly connected to an engine block of the internal combustion engine, not shown.
  • the switching pins are each arranged displaceably along their main extension direction in the corresponding stator housing.
  • each of the four actuators 15a, 17a, 20a, 22a has a coil which generates a magnetic field by energizing, whereby the corresponding switching pin moves out of the stator housing.
  • the slide tracks 31a, 32a, 33a, 34a are each designed as a groove in which the corresponding shift pin can be forcibly guided on both sides.
  • the actuator 15a provides the switching direction 16a by the engagement of its switching pin in the slide track 31a, and thus by an operative connection with the shift gate 10a.
  • For an axial displacement of the second cam member 13a in the switching direction 16a of the switching pin of the second actuator 17a is brought into engagement with the slide track 33a of the shift gate 10a.
  • the actuator 17a provides by the engagement of its switching pins in the slide track 33a, and thus by an operative connection with the shift gate 10a, the switching direction 16a ready.
  • the shift pin of the third actuator 20a is brought into engagement with the slide track 32a of the shift gate 10a.
  • the actuator 20a provides by the engagement of its switching pins in the slide track 32a, and thus by an operative connection with the shift gate 10a, the switching direction 21a ready.
  • the switching pin of the fourth actuator 22a is brought into engagement with the slide track 34a of the shift gate 10a.
  • the actuator 22a provides by the engagement of its switching pins in the slide track 34a, and thus by an operative connection with the shift gate 10a, the switching direction 21 a ready.
  • all four actuators 15a, 17a, 20a, 22a are electrically connected in parallel with each other.
  • the actuators 15a, 17a, 20a, 22a are, regardless of which switching direction 16a, 21a they are provided, electrically connected in parallel.
  • the actuators 15a, 17a, 20a, 22a are only jointly and simultaneously controllable.
  • the coils of the actuators 15a, 17a, 20a, 22a are connected in parallel with each other and are thus energized in parallel, and thus simultaneously.
  • the internal combustion engine valve drive device has a control and regulation unit 18a.
  • a control and regulation unit 18a For the axial displacement of the two cam elements 12a, 13a in the switching direction 16a and in the switching direction 21a controls and monitors the control unit 18a simultaneously all four actuators 15a, 17a, 20a, 22a.
  • the control unit 18a simultaneously controls and simultaneously monitors all the actuators 15a, 17a, 20a, 22a for the axial displacement of the two cam elements 12a, 13a independently of the switching direction 16a, 21a.
  • the control and regulating unit 18a For controlling, and thus for actuating the actuators 15a, 17a, 20a, 22a, the control and regulating unit 18a energizes all the coils of the actuators 15a, 17a, 20a, 22a at the same time, as a result of which all switching pins move out simultaneously and independently of the switching direction 16a, 21a become.
  • the control and regulation unit 18a can also only actuate or merely monitor the actuators 15a, 17a, 20a, 22a.
  • the control and regulation unit 18a recognizes a defective or nonfunctional actuator 15a, 17a, 20a, 22a, for example a defective or separate electrical connection to the actuators 15a, 17a, 20a. 22a, whereby the control and regulation unit 18a deactivates all the actuators 15a, 17a, 20a, 22a and thereby prevents an undefined mixing state of the cam elements 12a, 13a.
  • the control unit 18a deactivates the actuators 15a, 17a, 20a, 22a, for example by deactivating energization of the coils of the actuators 15a, 17a, 20a, 22a.
  • control and regulation unit 18a can be provided to output an error message upon detection of a defective or inoperable actuator 15a, 17a, 20a, 22a, for example by activating an optical, acoustic and / or haptic warning element in a motor vehicle interior.
  • the control unit 18a has only one output stage 19a for controlling and monitoring all the actuators 15a, 17a, 20a, 22a.
  • the output stage 19a is connected simultaneously with the four actuators 15a, 17a, 20a, 22a, which are provided for the axial displacement of the two cam elements 12a, 13a in both switching directions 16a, 21a. It is thus simultaneously with the two actuators 15a, 17a, which are provided for the axial displacement of the two cam elements 12a, 13a in the switching direction 16a and simultaneously with the two actuators 20a, 22a, which are provided for the axial displacement of the two cam elements 12a, 13a in the opposite switching direction 21 a, connected.
  • the output stage 19a can in principle also be designed as a control stage.
  • the control unit 18a controls the parallel-connected actuators 15a, 17a, 20a, 22a, and thus the actuators 15a, 17a are provided for the correct switching direction 16a, and the actuators 20a, 22a provided for the wrong switching direction 21a simultaneously, whereby the coils of each actuator 15a, 17a, 20a, 22a are energized simultaneously and thereby the switching pins of each actuator 15a, 17a, 20a, 22a exit simultaneously.
  • the switching pins of the actuators 15a, 17a which are associated with the correct switching direction 16a, simultaneously engage in the corresponding slide track 31a, 33a, whereby the actuator 15a and the actuator 17a are in operative connection with the shift gate 10a and the cam elements 12a, 13a through the Rotational movement 11a of the camshaft 24a are displaced axially in the switching direction 16a sequentially.
  • the switching pins of the actuators 20a, 22a, which are associated with the wrong switching direction 21a, are immediately, without having caused axial displacement of the cam elements 12a, 13a, by the Ausschieberampe the respective slide track 32a, 34a back into the corresponding stator housing of the actuator 20a 22, whereby the actuators 20a, 22a are deactivated.
  • the control and regulation unit 18a detects a defective actuator 15a, 17a, 20a, 22a and deactivates the remaining actuators 15a, 17a, 20a, 22a.
  • the actuators 15a, 17a, 20a, 22a which are provided to provide the same switching direction 16a, 21a, may be connected in parallel with each other.
  • the first actuator 15a and the second actuator 17a both provided for axially displacing the two cam elements 12a, 13a in the same switching direction 16a, would then be parallel connected to each other and the third actuator 20a and the fourth actuator 22a, both of which are provided for the axial displacement of the two cam elements 12a, 13a in the same, opposite to the switching direction 21a extending switching direction 21 a, connected in parallel.
  • the actuators 15a, 17a are electrically separated from the actuators 20a, 22a.
  • the actuators 15a, 17a are electrically connected independently of the actuators 20a, 22a.
  • the coils of the actuators 15a, 17a are parallel to each other and the coils of the actuators 20a, 22a connected in parallel.
  • the control unit 18a controls and monitors the axial displacement of the cam elements 12a, 13a in the switching direction 16a, the actuators 15a, 17a and axial displacement of the cam elements 12a, 13a in the switching direction 21a, the actuators 20a, 22a simultaneously. It controls either the actuators 15a, 17a or the actuators 20a, 22a depending on the switching direction 16a, 21a at the same time.
  • control and regulating unit 18a has an output stage, which is connected simultaneously to the first actuator 15a and the second actuator 17a, and an output stage, which is simultaneously connected to the third actuator 20a and the fourth actuator 22a.
  • the control unit 18a thus has one output stage per switching direction 16a, 21a.
  • FIG. 2 a further embodiment of the invention is shown.
  • the following descriptions are essentially limited to the differences between the embodiments, with respect to the same components, features and functions on the description of the other embodiment, in particular the FIG. 1 , can be referenced.
  • the letter a in the reference numerals of the embodiment in the FIG. 1 by the letter b in the reference numerals of the embodiment of FIG. 2 replaced.
  • like-named components in particular with regard to components with the same reference numerals, can in principle also to the drawing and / or the description of the embodiment of FIG. 1 to get expelled.
  • FIG. 2 is an alternatively formed internal combustion engine valve drive device of a motor vehicle, with a shift gate 10b, which is provided for the Hubumsciens a rotational movement 11 b of two cam elements 12b, 13b to convert an axial movement 14b of the cam elements 12b, 13b.
  • the engine valve drive device has four actuators 15b, 17b, 20b, 22b, which are electrically connected in series with each other in the switching direction 16b, 21b.
  • the actuators 15b, 17b provided to provide the same switching direction 16b are electrically in series with each other, and the actuators 20b, 22b provided to provide the same switching direction 21b are also electrically connected in series with each other.
  • the first actuator 15b and the second actuator 17b both of which are respectively provided for axial displacement of a cam member 12b, 13b in the switching direction 16b, are electrically connected in series with each other.
  • the third actuator 20b and the fourth actuator 22b both of which are respectively provided for axial displacement of a cam member 12b, 13b in the switching direction 21b, are electrically connected in series with each other.
  • the third actuator 20b and the fourth actuator 22b are electrically separated from the first actuator 15b and the second actuator 17b.
  • the third actuator 20b and the fourth actuator 22b which are electrically connected independently of the first actuator 15b and the second actuator 17b, are provided to operatively connect the first cam member 12b and the second cam member 13b in the same switching direction through an operative connection with the cam 10b 21 b to move axially, wherein the switching direction 21 b opposite to that provided by the first actuator 15b and the second actuator 17b switching direction 16b is aligned.
  • a circuit for driving the series-connected actuators 15b, 17b and the series-connected actuators 20b, 22b is closed only when all the electrical connections between the actuators 15b, 17b or the actuators 20b, 22b and the control unit 18b are functional.
  • the actuation of the actuators 15b, 17b and the actuators 20b, 22b is only possible if all electrical connections between the actuators 15b, 17b and the actuators 20b, 22b and the control and regulating unit 18b are functional.
  • Actuation of only one actuator 15b, 17b of the two actuators 15b, 17b or of only one actuator 20b, 22b of the two actuators 20b, 22b is impossible.
  • the actuators 15b, 17b connected in series or the actuators 20b, 22b connected in series can only be actuated together or not at all.
  • the internal combustion engine valve drive device has a control and regulation unit 18b.
  • the control and regulation unit 18b controls either the first actuator 15b and the second actuator 17b or the third actuator 20b and the fourth actuator 22b simultaneously.
  • the control unit 18b controls the control unit 18b only the actuators 15b, 17b at the same time, which are provided to provide the switching direction 16b.
  • control and regulation unit 18b additionally or alternatively monitor the actuators 15b, 17b, 20b, 22b, whereby all other actuators 15b, 17b, 20b, 22b are deactivated upon detection of a defective or nonfunctional actuator 15b, 17b, 20b, 22b and optionally a warning message is issued.
  • the control and regulating unit 18a has two output stages 19b and 23b for controlling and monitoring all the actuators 15b, 17b, 20b, 22b. It has only one output stage 19b, 23b per switching direction 16b, 21b.
  • the output stage 19b is connected simultaneously with the first actuator 15b and the second actuator 17b, which are provided for the axial displacement of the two cam elements 12b, 13b in the same switching direction 16b.
  • the output stage 23b is simultaneously connected to the third actuator 20b and the fourth actuator 22b, which are provided for the axial displacement of the two cam elements 12b, 13b in the same switching direction 21b.
  • the control and regulation unit 18b activates only the series-connected actuators 15b, 17b at the same time. It thus controls only the actuators 15b, 17b at the same time, which are provided for the correct switching direction 16b, whereby only coils of the actuators 15b, 17b are energized simultaneously and thereby simultaneously pull out switching pins only from the actuators 15b, 17b. Coils of the actuators 20b, 22b, which are provided to provide the wrong switching direction 21 b, remain energized.
  • the switching pins of the actuators 15b, 17b which are associated with the correct switching direction 16b, simultaneously engage in a corresponding slide track 31b, 33b, whereby the actuator 15b and the actuator 17b are in operative connection with the shift gate 10b and the cam elements 12 b, 13 b are axially displaced by the rotational movement 11 b of a camshaft 24 b sequentially in the switching direction 16 b. If an electrical connection between the actuators 15b, 17b is defective or disconnected, the electric circuit between the actuators 15b, 17b connected in series is disconnected, whereby they are de-energized, and thus deactivated.
  • all actuators 15b, 17b, 20b, 22b which are provided for providing the two switching directions 16b, 21b, may be connected in series with one another. Referring to the embodiment described above FIG. 2 Then, the first actuator 15b, the second actuator 17b, the third actuator 20b and the fourth actuator 22b would be electrically connected in series with each other, regardless of which switching direction 16b, 21b they are provided. The coils of all the actuators 15b, 17b, 20b, 22b are connected in series. The actuators 15b, 17b are electrically dependent on the actuators 20b, 22b.
  • a circuit for controlling the actuators 15b, 17b, 20b, 22b is closed only when all electrical connections between the actuators 15b, 17b, 20b, 22b and the control and regulation unit 18b are functional.
  • the actuation of the actuators 15b, 17b, 20b, 22b is only possible if all electrical connections between the actuators 15b, 17b, 20b, 22b and the control and regulation unit 18b are functional.
  • Activation of only one, two or three actuators 15b, 17b, 20b, 22b is impossible. Only all the actuators 15b, 17b, 20b, 22b together or none of the actuators 15b, 17b, 20b, 22b can be actuated.
  • the control and regulation unit 18b controls for the axial displacement of the cam elements 12b, 13b regardless of the switching direction 16b, 21b always all actuators 15b, 17b, 20b, 22b at the same time.
  • the control and regulating unit 18b has a single output stage, which is connected simultaneously to the first actuator 15b, to the second actuator 17b, to the third actuator 20b and to the fourth actuator 22b.
  • the control unit 18b thus has an output stage for both switching directions 16b, 21b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (10)

  1. Dispositif de distribution à soupapes de moteur à combustion interne pour un véhicule automobile, doté d'au moins une coulisse d'actionnement (10a ; 10b), qui est destinée, pour la commutation de levage, à convertir un mouvement rotatif (11 a, 11 b) d'au moins un élément à came (12a, 13a, 12b, 13b) en un mouvement axial (14a, 14b) du ou des éléments à came (12a, 13a, 12b, 13b), doté d'au moins un premier actionneur (15a, 15b) destiné à déplacer axialement, par liaison fonctionnelle avec la coulisse d'actionnement (10a, 10b), un premier élément à came (12a, 12b) dans une direction de commutation (16a; 16b), doté d'au moins un second actionneur (17a, 17b), destiné à déplacer axialement, par liaison fonctionnelle avec la coulisse d'actionnement (10a, 10b), un second élément à came (13a, 13b) dans la même direction de commutation (16a, 16b), et doté d'une unité de réglage et/ou de commande (18a, 18b), caractérisé en ce que l'unité de commande et/ou de réglage (18a, 18b) est destinée à commander simultanément et/ou à surveiller lesdits deux actionneurs (15a, 17a; 15b, 17b), pour le déplacement axial d'au moins deux éléments à came (12a, 13a, 12b, 13b) dans la même direction de commutation (16a, 16b).
  2. Dispositif de distribution à soupapes de moteur à combustion interne selon la revendication 1, caractérisé en ce qu'au moins le premier actionneur (15a, 15b) et le second actionneur (17a, 17b) sont couplés électriquement en parallèle l'un avec l'autre ou en série.
  3. Dispositif de distribution à soupapes de moteur à combustion interne selon la revendication 1 ou 2, caractérisé en ce que l'unité de commande et/ou de réglage (18a, 18b) présente un étage final et ou de commande (19a, 19b) qui est relié simultanément au moins au deux actionneurs (15a, 17a; 15b, 17b), destinés au déplacement axial d'au moins deux éléments à came (12a, 13a, 12b, 13b) dans la même direction de commutation (16a, 16b).
  4. Dispositif de distribution à soupapes pour moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de réglage et/ou de commande (18a) est destinée à, pour le déplacement axial d'au moins deux éléments à came (12a, 13a), commander simultanément et/ou surveiller au moins les deux actionneurs {15a, 17a) et au moins un troisième actionneur (20a), lequel est destiné à déplacer axialement, par liaison fonctionnelle avec la coulisse de commutation (10a), le premier élément à came (12a) et/ou le deuxième élément à came (13a) dans la direction de commutation (21 a), qui est aligné dans la direction inverse de la direction de commutation (16a) mise à disposition par le premier actionneur (15a) et le deuxième actionneur (173), indépendamment d'une direction de commutation (16a, 21 a) des actionneurs (15a, 17a, 20a).
  5. Dispositif de distribution à soupapes pour moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un troisième actionneur (20a) est couplé électriquement en parallèle ou en série avec le premier actionneur (15a) et le deuxième actionneur (17a).
  6. Dispositif de distribution à soupapes pour moteur à combustion interne selon l'une des revendications 3 et 4, caractérisé en ce que l'étage final et/ou de commande (19a) est relié simultanément auxdits au moins trois actionneurs (15a. 17a, 20a) destinés au déplacement axial d'au moins deux éléments à came (12a, 13a) qui sont disposés dans les deux directions de commutation (16, 21 a) opposées.
  7. Dispositif de distribution à soupapes pour moteur à combustion interne selon l'une quelconque des revendications de 1 à 3, caractérisé en ce qu'au moins un troisième actionneur (20b), qui est séparé électriquement du premier actionneur (15b) et du deuxième actionneur (17b) et destiné, par liaison fonctionnelle avec la coulisse de commutation (10b), à déplacer axialement le premier élément à came (12b) et/ou le second élément à came (13b) dans une direction de commutation (21 b), qui est alignée dans la direction inverse à la direction de commutation (16b) mise à disposition par le premier actionneur (15b) et le deuxième actionneur (17b).
  8. Dispositif de distribution à soupapes pour moteur à combustion interne selon la revendication 7, caractérisé en ce qu'au moins un quatrième actionneur (22b), qui est couplé en parallèle ou en série avec le troisième actionneur (20b) et destiné à, par une liaison fonctionnelle avec la coulisse de commutation (10b), à déplacer axialement le premier élément à came (12b) ou le second élément à came (13b) dans une direction de commutation (21 b), qui correspond à la direction de commutation (21 b) mise à disposition par le troisième actionneur (20b).
  9. Dispositif de distribution à soupapes pour moteur à combustion interne selon l'une des revendications 3 et 7, caractérisé en ce que l'unité de réglage et/ou de commande (19a) présente un autre étage final et/ou de commande (23b) qui est relié au moins au troisième actionneur (20b).
  10. Procédé d'inversion de la course du piston dans un moteur à combustion interne d'un véhicule automobile au moyen d'un dispositif de distribution à soupapes de moteur à combustion interne, en particulier un dispositif de distribution à soupapes de moteur à combustion interne selon l'une quelconque des revendications précédentes, au moyen d'une liaison fonctionnelle d'un premier actionneur (15a, 15b) avec une coulisse de commutation (10a, 10b) un premier élément à came (12a, 12b) est déplacé axialement dans une direction de commutation (16a, 16b) et au moyen d'une liaison fonctionnelle d'un second actionneur (17a, 17b) avec la coulisse à commutation (10a, 10b) un second élément à came (13a, 13b) est déplacé axialement dans la même direction de commutation (16a, 16b), caractérisé en ce que pour le déplacement axial d'au moins deux éléments à came (12a, 13a, 12b, 13b) au moins le premier actionneur (15a, 15b) et le deuxième actionneur (17a, 17b) sont commandés simultanément.
EP11805414.7A 2011-06-16 2011-12-14 Dispositif de commande des soupapes d'un moteur à combustion interne pour un véhicule Not-in-force EP2721262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011104382A DE102011104382A1 (de) 2011-06-16 2011-06-16 Brennkraftmaschinenventiltriebvorrichtung für ein Kraftfahrzeug
PCT/EP2011/006300 WO2012171545A1 (fr) 2011-06-16 2011-12-14 Dispositif de commande des soupapes d'un moteur à combustion interne pour un véhicule

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EP2721262A1 EP2721262A1 (fr) 2014-04-23
EP2721262B1 true EP2721262B1 (fr) 2015-03-04

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US (1) US9145835B2 (fr)
EP (1) EP2721262B1 (fr)
JP (1) JP2014517200A (fr)
CN (1) CN103608552B (fr)
DE (1) DE102011104382A1 (fr)
WO (1) WO2012171545A1 (fr)

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Publication number Publication date
US9145835B2 (en) 2015-09-29
DE102011104382A1 (de) 2012-12-20
CN103608552B (zh) 2017-05-17
WO2012171545A1 (fr) 2012-12-20
JP2014517200A (ja) 2014-07-17
CN103608552A (zh) 2014-02-26
US20140102389A1 (en) 2014-04-17
EP2721262A1 (fr) 2014-04-23

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