EP2817494A1 - Brennkraftmaschinenventiltriebverstellvorrichtung - Google Patents
BrennkraftmaschinenventiltriebverstellvorrichtungInfo
- Publication number
- EP2817494A1 EP2817494A1 EP13700194.7A EP13700194A EP2817494A1 EP 2817494 A1 EP2817494 A1 EP 2817494A1 EP 13700194 A EP13700194 A EP 13700194A EP 2817494 A1 EP2817494 A1 EP 2817494A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- valve
- elements
- tracks
- cam elements
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 description 5
- 230000009849 deactivation Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- 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
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- 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
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- 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 a Kraft mecanical negligenceverstellvoroplasty according to the preamble of claim 1.
- the invention is in particular the object of providing a particularly variable and at the same time compact build Kraft mecanical negligenceverstellvoroplasty. It is achieved according to the invention by the features of claim 1. Further embodiments emerge from the subclaims.
- the invention is based on a KraftGermanventiltriebverstellvorraumtage with at least one camshaft comprising at least two axially displaceably arranged cam elements.
- a “camshaft” should be understood to mean, in particular, a shaft which is provided for actuating a plurality of valves of a motor vehicle internal combustion engine and has at least one cam track for actuating a valve, in which case it is conceivable for the camshaft to be designed as an intake camshaft and provided for this purpose, Actuate intake valves, as well as that the camshaft is designed as an exhaust camshaft and is intended to Aus- To operate lassventile.
- a “cam element” is to be understood in particular as an element which is arranged in a rotationally fixed manner on a camshaft and is provided for actuating a valve to act on the corresponding valve directly or indirectly with at least one stroke that transmits a torque and / or a rotary motion unchanged.
- axially is meant in particular axially with respect to a main axis of rotation of the cam element.
- “Axially displaceable” is to be understood in particular as meaning that the cam element is displaceable on the camshaft parallel to the main axis of rotation of the cam element between at least two working positions.
- a “cam track” is to be understood as meaning, in particular, a region of the cam element which forms a valve actuation curve for valve actuation and / or which defines the valve actuation
- Cam elements comprises, but also, depending on a number of cylinders of the motor vehicle internal combustion engine, three cam elements, four cam elements, five cam elements, six cam elements, eight cam elements or another, may include the expert appears reasonable number of cam elements.
- valve lift should be understood to mean, in particular, a movement of the valve triggered by the cam tracks of the cam elements, in which the valve preferably lifts out of its valve seat and thus opens a flow cross section two cam tracks, which define an actuation of the at least one valve are understood.
- At least one of the cam elements has at least one cam track with a valve lift and one cam track with a zero lift.
- a "zero stroke" is to be understood in particular that a valve which is operated with the zero stroke, during a complete revolution of the cam member has a constant valve lift, preferably remains in its valve seat and a flow cross-section of the valve during the entire time in the the zero lift is engaged, remains locked, leaving the cam track has, during one entire revolution of the corresponding cam element, preferably non-contact with the corresponding valve and does not touch it. While a cam member is engaged with a zero stroke, the corresponding valve remains unactuated.
- another of the cam elements exclusively has at least one cam track with one valve lift.
- one of the at least two cam elements each have two cam tracks for actuating one valve each and another of the at least two cam elements each having three cam tracks for actuating a respective valve.
- the camshaft comprises four axially displaceable cam elements, wherein two cam elements each have two cam tracks for actuating a valve and the two other cam elements each have three cam tracks for actuating a valve.
- cam element each having three cam tracks, has a zero stroke.
- the cylinder deactivation can be integrated particularly well and simply into the motor vehicle valve drive adjustment device.
- the KraftGermanventiltriebverstellvorraum has a control and / or regulating unit which is provided to at least partially independently switch the at least two cam elements.
- the cam elements can be switched particularly advantageously and the motor vehicle valve drive adjusting device can be made particularly variable.
- a "control and / or regulating unit” is to be understood as meaning in particular a unit having at least one control unit.
- Control unit is to be understood in particular as a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit.
- the tax and / or regulatory Have a plurality of interconnected control units, which are preferably provided to communicate via a bus system, in particular a CAN bus system with each other.
- the term "provided” should be understood to mean in particular specially programmed, designed and / or equipped. "Switching at least partially independently of one another” should be understood to mean that a cam element can be switched in an operating state independently of whether the other cam elements are switched , In this case, it may be to the circuit of the cam elements to the same actuator, which can switch the cam elements individually and independently. A circuit of all cam elements in a period of less than 10 camshaft revolutions should be understood in particular as a dependent circuit of the cam elements, which is not independent in the sense of separately switchable cam elements.
- control and / or regulating unit is provided in at least one operating state to change a switching position of at least one of the cam elements and to maintain a switching position of at least one other cam element.
- a cam element can be switched particularly advantageously independently of the other cam element.
- a "switching position of a cam element” is to be understood as meaning a defined position of the cam element which occupies the cam element after a circuit has been completed and in which a defined cam track engages the corresponding valve in that a cam element is switched from one switching position to another switching position. Under a “maintain switching position” should be understood in particular that the switching position of the cam element remains the same and in particular no switching is made in a different switching position.
- At least one of the cam elements in at least one operating state has a cam track in engagement, which triggers a different valve lift, than another of the cam elements.
- FIG. 1 is a schematic representation of a motor vehicle valve drive adjusting device according to the invention.
- FIG. 2 shows a characteristic of the motor vehicle valve drive adjusting device according to the invention, which is subdivided into different operating ranges.
- FIG. 1 shows a motor vehicle valve drive adjusting device according to the invention.
- the motor vehicle valve drive device is part of a non-illustrated motor vehicle internal combustion engine 51.
- the motor vehicle internal combustion engine 51 is part of a motor vehicle not shown in detail and has four cylinders not shown in detail. In principle, it is also conceivable that the motor vehicle internal combustion engine 51 has another number of cylinders that appears appropriate to the person skilled in the art.
- the motor vehicle internal combustion engine 51 has, for each cylinder, two valves not shown in detail, designed as inlet valves, and two valves (not shown in detail) designed as outlet valves.
- the motor vehicle valve drive apparatus has a camshaft 10 designed as an intake camshaft, which is provided for actuating the valves designed as inlet valves, and a camshaft 10, not illustrated in detail as an exhaust camshaft, which is provided for actuating the valves designed as exhaust valves.
- a camshaft 10 designed as an intake camshaft may in principle be of essentially the same design as the camshaft 10 designed as an intake camshaft.
- the camshaft 10 designed as an intake camshaft and the camshaft 10 designed as an exhaust camshaft may vary the valves they actuate Apply strokes, which may differ both in their maximum stroke and in a stroke course.
- the camshaft 10 is rotatably supported in a cylinder head of the automobile internal combustion engine 51.
- the camshaft 10 comprises four axially displaceably arranged cam elements 11, 12, 13, 14.
- the first cam element 11 is associated with the first cylinder and the corresponding valves.
- the second cam member 12 is associated with the second cylinder and the corresponding valves.
- the third cam element 13 is the third cylinder assigned to the and the corresponding valves.
- The. fourth cam member 14 is associated with the fourth cylinder and the corresponding valves.
- the axially displaceable cam elements 11, 12, 13, 14 are provided for actuating and adjusting a valve lift of two valves of a cylinder.
- the cam elements 11, 12, 13, 14 are rotatably connected to the camshaft 10 via a positive engagement, not shown.
- cam elements 11, 12, 13, 14 are arranged displaceably.
- the cam elements 11, 12, 13, 14 are connected to the camshaft 10 in another way that appears appropriate to a person skilled in the art.
- a number of cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 for actuating a valve of one of the cam members 11, 12, 13, 14 and a number of cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 for actuating a valve of another of the cam members 11, 12, 13, 14 are different from each other.
- the first axially displaceably arranged cam member 1 1 and the fourth axially displaceable cam member 14 for adjusting a valve lift of a valve of a cylinder per valve in each case two cam tracks 15, 16, 17, 18, 27, 28, 29, 30.
- the first cam element 11 and the fourth camshaft element 14 each have two first cam tracks 15, 17, 27, 29 and two second cam tracks 16, 18, 28, 30.
- first cam tracks 15, 17, 27, 29 and a second cam track 16, 18, 28, 30 are each associated with the same valve of a cylinder and have different valve strokes and Hubverrise on.
- the first cam tracks 15, 17, 27, 29 and the second cam tracks 16, 18, 28, 30, each associated with the same valve of the respective cylinder, are respectively disposed adjacent to the corresponding cam member 11, 14.
- the first cam tracks 15, 17, 27, 29 of the cam elements 11, 14 are provided for a small valve lift.
- the second cam tracks 16, 18, 28, 30 of the cam elements 11, 14 are provided for a large valve lift.
- the first cam tracks 15, 17, 27, 29, which are provided for a small valve lift have a smaller maximum distance from the main rotational axis 36 of the camshaft 10 than the second cam tracks 16, 18, 28, 30 provided for a large stroke.
- the cam elements 11, 14 each have a different cross-section than in a region of the second cam tracks 16, 18, 28, 30.
- the second cam element 12 and the third cam element 13 each have three cam valves for adjusting a valve lift of a valve of the associated cylinder. Traces 19, 20, 21, 22, 23, 24, 25, 26, 31, 32, 33, 34 on.
- the second cam element 12 and the third cam element 13 each have two first cam tracks 19, 21, 23, 25, two second cam tracks 20, 22, 24, 26 and two third cam tracks 31, 32, 33, 34.
- a first cam track 19, 21, 23, 25, a second cam track 20, 22, 24, 26 and a third cam track 31, 32, 33, 34 are each associated with the same valve of a cylinder and have different valve strokes and Hubverfact. All three cam tracks 19, 20, 21, 22, 23, 24, 25, 26, 31, 32, 33, 34 are arranged adjacent to each other and each adjacent directly to each other.
- the first cam tracks 19, 21, 23, 25 are respectively arranged between the third cam tracks 31, 32, 33, 34 and the second cam tracks 20, 22, 24, 26.
- the first cam tracks 19, 21, 23, 25 of the second cam member 12 and the third cam member 13 are formed the same as the first cam tracks 15, 17, 27, 29 of the first cam member 11 and the fourth cam member 14 and are provided for a small valve lift.
- the second cam tracks 20, 22, 24, 26 of the second and third cam members 12, 13 are formed the same as the second cam tracks 16, 18, 28, 30 of the first and fourth cam members 11, 14 and are provided for a large valve lift.
- the third cam tracks 31, 32, 33, 34 of the second cam member 12 and the third cam member 13 have a zero stroke.
- the third cam tracks 31, 32, 33, 34 of the second and third cam members 12, 13 do not cause actuation of the valve during a full rotation of the cam members 12, 13.
- the third cam tracks 31, 32, 33, 34 have a maximum distance from the main axis of rotation 36 of the camshaft 10 which is smaller than that of the first cam tracks 19, 21, 23, 25.
- the third cam tracks 31, 32, 33, 34 are during a full rotation of the cam member 12, 13 without contact with the associated valve.
- the third cam tracks 31, 32, 33, 34 of the cam members 12, 13 do not actuate the valves, whereby the corresponding cylinder is not filled with a fuel-air mixture and thus can not be ignited.
- the third cam tracks 31, 32, 33, 34 of a cam member 12, 13 are engaged, the corresponding cylinder is turned off and does not generate drive torque.
- cam elements 11, 12, 13, 14 are conceivable.
- At least one cam element 11, 12, 13, 14 has only one cam track 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 , 30, 31, 32, 33, 34 or any other number of cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 that appear expedient to the person skilled in the art. 29, 30, 31, 32, 33, 34 which is greater than three.
- At least one of the cam elements 11, 12, 13, 14 each have at least two cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 for actuating a respective valve and another of the at least two cam elements 11, 12, 13, 14 respectively at least three cam tracks 15, 16, 17, 18, 19, 20, 21, 22nd , 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 for actuating a respective valve, wherein none of the cam tracks 15, 16, 17, 18, 19, 20, 21, 22 , 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 has a zero lift.
- the motor vehicle valve drive adjusting device comprises an actuator device 37, which is provided for adjusting the valve lift to axially displace the cam elements of the camshaft 10.
- the cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, which are in engagement with the respective valve are displaced. 29, 30, 31, 32, 33, 34 changed.
- the first cam element 11 and the second cam element 12 each have a first switching position and a second switching position.
- the second cam element 12 and the third cam element 13 have a first switching position, a second switching position and a third switching position.
- first switching position of one of the cam elements 11, 12, 13, 14 are respectively the first two cam tracks 15, 17, 19, 21, 23, 25, 27, 29 of the cam member engaged and actuate the corresponding valve of the corresponding cylinder.
- the valves of the cylinder are operated with the small valve lift.
- the second switching position of the cam elements 11, 12, 13, 14 are respectively the two second cam tracks 16, 18, 20, 22, 24, 26, 28, 30 of the cam member 11, 12, 13, 14 in engagement and actuate the corresponding Valve of the corresponding cylinder.
- the valves of the cylinder are operated with the large valve lift.
- the third cam tracks 31, 32, 33, 34 of the second cam member 12 and the third cam member 13 are respectively engaged. Since the third cam tracks 31, 32, 33, 34 each have the zero stroke and the respective valves have no lift. remain active are the corresponding cylinder in a third switching position of the second and third cam member 12, 13 is turned off.
- the KraftGermanventiltriebverstellvorraum comprises a control and regulating unit 35.
- the control unit 35 is formed as part of a motor control. In principle, it is also conceivable that the control and regulation unit 35 is formed as a separate unit.
- the control and regulation unit 35 is provided to switch the at least four cam elements 11, 12, 13, 14 independently of each other.
- the control unit 35 sends to switch a cam member 1, 12, 13, 14 of a switching position to the other switching position an electrical or electronic signal to the actuator 37, which then the corresponding cam member 11, 12, 13, 14 of a switching position switches to the other switching position.
- the control and regulation unit 35 is provided in at least one operating state to change the switching position of one of the cam elements 11, 12, 13, 14 and to maintain the switching position of another cam element 11, 12, 13, 14.
- the control unit 35 changes the valve lift of the one cam member 11, 12, 13, 14 from a small to a large valve lift, from a large to a small valve lift, or from one of the valve lifts to a zero lift, where the valve lift of the other does not switched cam element 11, 12, 13, 14 at its previous small valve lift, large valve lift or zero stroke remains.
- the control and regulation unit 35 in a defined operating state exclusively a cam member 1 1, 12, 13, 14, two cam elements 11, 12, 13, 14, three cam elements 11, 12, 13, 14 or all four Cam elements 11, 12, 13, 14 switches at least substantially simultaneously. In this case, it may be due to the actuator 37 to temporal differences, which are preferably only up to two camshaft revolutions. In principle, it is also conceivable that all switching cam elements 11, 12, 13, 14 switch at the same time.
- At least one of the four cam elements 11, 12, 13, 14 has a cam track 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 in at least one operating state , 31, 32, 33, 34, which actuates a valve lift other than an engaged cam track 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 of another of the four cam elements 11, 12, 13, 14.
- Different cam elements 11, 12, 13, 14 have in an operating state cam tracks 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 in engagement, which trigger different valve strokes or the zero stroke at the respective valves.
- At least one of the four cam elements 11, 14 is in an operating state in the first switching position, therefore, has a cam track 15, 17, 27, 29 in engagement, which triggers a small valve lift, while at least one other of the four cam elements 12, 13 is in the third switching position, ie the third cam track 31, 32, 33, 34 in engagement, which triggers a zero stroke.
- the actuator device 37 includes a central actuator 38 which is arranged to switch all four cam elements.
- the actuator device 37 comprises two actuators 38 which are each provided to switch two of the four cam elements 11, 12, 13, 14.
- the actuator device 37 for switching each of the cam elements 11, 12, 13, 14 has a separate actuator, which in each case exclusively switches a cam element 11, 12, 13, 14 assigned to it.
- any other arrangement and / or number of actuators which appear expedient to the person skilled in the art is conceivable in order to switch the cam elements 11, 12, 13, 14. It is also possible to combine actuators which only have one cam element 11, 12, 13, 14 and actuators which switch a plurality of cam elements 11, 12, 13, 14.
- the KraftGermanventiltriebverstellvorraum has, as shown in Figure 2, four different operating areas 39, 40, 41, 42.
- a speed of the motor vehicle internal combustion engine 51 is plotted on the abscissa 52 and an output of the motor vehicle internal combustion engine 51 is plotted on the ordinate 53.
- the motor vehicle valve drive adjustment device it is also conceivable for the motor vehicle valve drive adjustment device to have a different number of operating regions 39, 40, 41, 42 that appears appropriate to the person skilled in the art.
- the various operating ranges 39, 40, 41, 42 are associated with a power-speed range of the automotive internal combustion engine 51. Below a defined first power 43 and below a defined first rotational speed 44, the motor vehicle internal combustion engine 51 is located in a first operating region 39.
- the first operating region 39 is designed as a central deactivation operating region. Above the defined first power 43 and below a second defined power 45, or above the first defined speed 44 and below a second defined speed 46, the motor vehicle internal combustion engine 51 is located in a second operating area 40. The second operating area 40 is also shown as a central shutdown. Operating area trained.
- the third operating range 41 is limited by the second defined power 45, the second defined speed 46 and a third defined power 47 and a third defined speed 48.
- the fourth operating range 42 is limited by the third defined power 47, the third defined speed 48 and a maximum power 49 and maximum speed 50.
- a definition of the various powers and rotational speeds takes place as a function of the corresponding motor vehicle engine 51 and moves in areas that appear reasonable for the person skilled in the art.
- the motor vehicle valve drive adjustment device has a different combination of switching positions of the cam elements 11, 12, 13, 14.
- the first cam element 11 and the fourth cam element 14 are each in their first switching position and actuate the respective valves respectively with the small valve lift.
- the second cam member 12 and the third cam member 13 are in the first operating range in each case in the third switching position and actuate the respective valves with the zero stroke.
- the first cam member 11 and the fourth cam member 14 are each in their second shift position and actuate the respective valves respectively with the large valve lift.
- the second cam member 12 and the third cam member 13 are in the third operating position in the second operating region 40 and actuate the respective valves with the zero stroke.
- the control and regulating unit 35 switches the first cam member 11 and the fourth cam member 14 at a transition from the first operating region 39 in the second operating region 40 by means of the actuator device 37 from the first to the second switching position and thus changes the valve strokes of the First cam member 11 and the fourth cam member 14 actuated valves of the first and fourth cylinder from the small valve lift to the large valve lift.
- the control and regulation unit 35 switches the first cam member 11 and the fourth cam member 14 in a transition from the second operating region 40 in the third operating region 41 by means of the actuator 37 each of the second switching position to the first switching position and thus changes the valve strokes of Valves of the first and fourth cylinders operated by the first cam member 11 and the fourth cam member 14 from the large valve lift to the small valve lift.
- control unit 35 switches the second cam member 12 and the third cam member 13 in the transition from the second operating region 40 to the third operating region 41 by means of the actuator device 37 in each case from the third shift position to the first shift position, and thus changes the valve lifts of the valves of the second and third cylinders actuated by the second cam element 12 and the third cam element 13 from the zero lift to the small valve lift.
- the control and regulation unit 35 switches the first cam member 11, the second cam member 12, the third cam member 13 and the fourth cam member 14 at a transition from the third operating region 41 in the fourth operating region 42 by means of the actuator device 37 respectively from the first switching position the second shift position, and thus changes the valve lifts of the valves of the first, second, third and fourth cylinders operated by the first cam member 11, the second cam member 12, the third cam member 13 and the fourth cam member 14 from the small valve lift to the large valve lift.
- any other circuit of the cam elements 11, 12, 13, 14 appearing appropriate to the person skilled in the art is also conceivable in the various operating regions 39, 40, 41, 42.
- the third operating region 41 the first cam element 11 and the fourth cam element 14 are switched to the first switching position and the second cam element 12 and the third cam element 13 are switched to their second switching position.
- the actuator device 37 has a mechanical coding, which defines a defined switching sequence of the cam elements 11, 12, 13, 14. Due to the mechanical coding of the actuator device 37, a switching sequence of the cam elements 1 1, 12, 13, 14 fixed and a circuit of the individual cam elements 11, 12, 13, 14 always follows a predetermined pattern. The individual switching positions of the individual cam elements 11, 12, 13, 14 in the various operating regions 39, 40, 41, 42 are predetermined by the mechanical coding. On the switching position of the cam member 11, 12, 13, 14 follows in a next operating range 39, 40, 41, 42 always the same switching position.
- the control and regulation unit 35 In a circuit from the one operating region 39, 40, 41, 42 into an adjacent operating region 39, 40, 41, 42, the control and regulation unit 35 outputs only a signal for switching to the actuator device 37 and a correct circuit of the cam elements 11, 12, 13, 14 is predetermined by the mechanical coding. A malfunction or failure of a circuit of one of the cam elements 11, 12, 13, 14 is excluded. There are always defined switching positions of the cam elements 11, 12, 13, 14 before.
- the actuator device 37 is provided to switch the cam elements 11, 12, 13, 14 as a function of at least one operating parameter of the motor vehicle internal combustion engine 51.
- the control unit 35 outputs a defined speed 44, 46, 48 or a defined power 43, 45, 47 of the motor vehicle engine 51, the two operating areas 39, 40, 41, 42 from each other, a signal to switch the corresponding Cam elements 11, 12, 13, 14 by means of the actuator device 37th
- Control and / or regulating unit Main axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012003491A DE102012003491A1 (de) | 2012-02-21 | 2012-02-21 | Kraftfahrzeugventiltriebverstellvorrichtung |
PCT/EP2013/000023 WO2013124020A1 (de) | 2012-02-21 | 2013-01-08 | Brennkraftmaschinenventiltriebverstellvorrichtung |
Publications (2)
Publication Number | Publication Date |
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EP2817494A1 true EP2817494A1 (de) | 2014-12-31 |
EP2817494B1 EP2817494B1 (de) | 2015-10-14 |
Family
ID=47557138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13700194.7A Active EP2817494B1 (de) | 2012-02-21 | 2013-01-08 | Brennkraftmaschinenventiltriebverstellvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US20140318485A1 (de) |
EP (1) | EP2817494B1 (de) |
JP (1) | JP2015507140A (de) |
CN (1) | CN104136724A (de) |
DE (1) | DE102012003491A1 (de) |
WO (1) | WO2013124020A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US8931444B2 (en) | 2012-11-20 | 2015-01-13 | Ford Global Technologies, Llc | Head packaging for cylinder deactivation |
US9399964B2 (en) | 2014-11-10 | 2016-07-26 | Tula Technology, Inc. | Multi-level skip fire |
US11236689B2 (en) | 2014-03-13 | 2022-02-01 | Tula Technology, Inc. | Skip fire valve control |
US10662883B2 (en) | 2014-05-12 | 2020-05-26 | Tula Technology, Inc. | Internal combustion engine air charge control |
WO2015175286A1 (en) * | 2014-05-12 | 2015-11-19 | Tula Technology, Inc. | Internal combustion engine using variable valve lift and skip fire control |
DE102014019573A1 (de) * | 2014-12-23 | 2016-06-23 | Daimler Ag | Ventiltriebvorrichtung für eine Brennkraftmaschine |
SE539832C2 (en) * | 2016-04-28 | 2017-12-12 | Scania Cv Ab | A valve drive for an internal combustion engine with variable control of valves |
DE102017130977A1 (de) * | 2017-12-21 | 2019-06-27 | Volkswagen Aktiengesellschaft | Brennkraftmaschine mit vier Zylindern und Verfahren zum Betreiben einer solchen Brennkraftmaschine |
DE102017223500A1 (de) * | 2017-12-21 | 2019-06-27 | Volkswagen Aktiengesellschaft | Verfahren zum Betreiben einer Brennkraftmaschine und Brennkraftmaschine |
CN110005499A (zh) * | 2019-03-27 | 2019-07-12 | 大连理工大学 | 一种普适型多模式配气机构 |
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JP2917636B2 (ja) * | 1991-12-10 | 1999-07-12 | トヨタ自動車株式会社 | 多気筒内燃機関の制御装置 |
DE10148177B4 (de) * | 2001-09-28 | 2015-05-13 | Schaeffler Technologies AG & Co. KG | Ventiltrieb mit Ventilhubumschaltung für die Gaswechselventiele eines 4-Takt-Verbrennungsmotors |
DE102004011586A1 (de) * | 2003-03-21 | 2004-10-07 | Audi Ag | Ventiltrieb einer einen Zylinderkopf aufweisenden Brennkraftmaschine |
DE102007010155A1 (de) * | 2007-03-02 | 2008-09-04 | Audi Ag | Ventiltrieb einer Brennkraftmaschine mit dreistufigen Nockenprofilgruppen |
DE102007037745A1 (de) * | 2007-08-10 | 2009-02-12 | Daimler Ag | Brennkraftmaschinenventiltriebumschaltvorrichtung |
DE102007037747B4 (de) | 2007-08-10 | 2022-06-15 | Mercedes-Benz Group AG | Brennkraftmaschinenventiltriebumschaltvorrichtung |
DE102008029325A1 (de) * | 2008-06-20 | 2009-12-24 | Daimler Ag | Ventiltriebvorrichtung |
DE202009015465U1 (de) * | 2009-02-14 | 2010-02-25 | Schaeffler Kg | Ventiltrieb einer Brennkraftmaschine |
WO2011043301A1 (ja) * | 2009-10-06 | 2011-04-14 | ヤマハ発動機株式会社 | エンジンの動弁装置 |
DE102010005790B4 (de) * | 2010-01-25 | 2012-03-15 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Ventiltrieb zur Betätigung von Gaswechselventilen von Brennkraftmaschinen |
-
2012
- 2012-02-21 DE DE102012003491A patent/DE102012003491A1/de not_active Withdrawn
-
2013
- 2013-01-08 CN CN201380010276.1A patent/CN104136724A/zh active Pending
- 2013-01-08 JP JP2014556939A patent/JP2015507140A/ja active Pending
- 2013-01-08 WO PCT/EP2013/000023 patent/WO2013124020A1/de active Application Filing
- 2013-01-08 EP EP13700194.7A patent/EP2817494B1/de active Active
-
2014
- 2014-07-06 US US14/324,195 patent/US20140318485A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
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See references of WO2013124020A1 * |
Also Published As
Publication number | Publication date |
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DE102012003491A1 (de) | 2013-08-22 |
EP2817494B1 (de) | 2015-10-14 |
JP2015507140A (ja) | 2015-03-05 |
WO2013124020A1 (de) | 2013-08-29 |
CN104136724A (zh) | 2014-11-05 |
US20140318485A1 (en) | 2014-10-30 |
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