EP4453390A1 - Brennkraftmaschine und verfahren zum betrieb einer brennkraftmaschine - Google Patents
Brennkraftmaschine und verfahren zum betrieb einer brennkraftmaschineInfo
- Publication number
- EP4453390A1 EP4453390A1 EP22821291.6A EP22821291A EP4453390A1 EP 4453390 A1 EP4453390 A1 EP 4453390A1 EP 22821291 A EP22821291 A EP 22821291A EP 4453390 A1 EP4453390 A1 EP 4453390A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- control unit
- network topology
- signal
- internal combustion
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- 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
- F01L2013/11—Sensors for variable valve timing
- F01L2013/111—Camshafts position or phase
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
- F02D2041/283—Interface circuits between sensors and control unit the sensor directly giving at least one digital reading
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
- F02D2041/285—Interface circuits between sensors and control unit the sensor having a signal processing unit external to the engine control unit
Definitions
- the invention relates to an internal combustion engine with a crankshaft and a plurality of adjustable camshafts. Furthermore, the invention includes a method for assembling the internal combustion engine and preparing for its operation.
- an operating method for an internal combustion engine with an electromechanical camshaft adjuster is described in DE 102 59 133 A1.
- the camshaft adjuster an arrangement for adjusting the rotational angle relationship between a camshaft and a crankshaft of the internal combustion engine, has a modular structure.
- components of the arrangement are also used in part by other control and regulating devices of the internal combustion engine.
- a control unit of the electric motor of the camshaft adjuster is connected to a second control unit, which is the engine control unit of the internal combustion engine.
- Hydraulic or electromechanical camshaft adjusters are mainly used as camshaft adjusters.
- the latter are more complex and expensive, but compared to hydraulic camshaft adjusters, they have improved response behavior and the advantage that the camshaft can be adjusted even when the combustion engine is at a standstill.
- DE 10 2019 113 300 B3 shows camshaft control units with two different network topologies, one of which is the CAN bus and the other bus fulfills real-time requirements.
- camshaft adjusters can be adjusted independently of each other and can be addressed individually via the CAN bus by an engine control unit in order to be able to display the greatest possible variability.
- valve train is complex to manufacture and assemble, so that it is desirable to use as many identical parts as possible.
- camshaft adjusters it is still necessary for the camshaft adjusters to be individually adjustable. To do this, they must be set in such a way that they only react to the CAN signal intended for them and set the desired target angle.
- each camshaft adjuster has a motor including electronics and software, with each electric motor taking over the determination of the angle and the control loop of an individual camshaft.
- each electric motor taking over the determination of the angle and the control loop of an individual camshaft.
- different configuration data sets are stored in a memory of the electronics. This requires either that different configurations must be kept ready during manufacture and during assembly of the internal combustion engine. Both make production more expensive and harbor the risk of confusion during assembly if the components are otherwise identical or similar on the outside in order to benefit from the principle of identical parts.
- the invention is based on the object of further developing an internal combustion engine with a plurality of camshaft adjusters compared to the prior art mentioned with the aspect of using resources as efficiently as possible. Furthermore, the invention is based on the object of specifying a method in which the correct Correct assignment of the camshaft control units can be carried out as automatically as possible.
- the first subtask is solved by an internal combustion engine with the features of claim 1 .
- the second subtask is solved by a method with the features according to claim 6 .
- the internal combustion engine is preferably designed as a reciprocating piston engine and preferably forms a four-stroke engine. It has a crankshaft, which drives a number of camshafts via a timing drive, by means of which the gas exchange takes place as part of the valve drive.
- the angular position of the crankshaft can be determined by a crankshaft sensor.
- the crankshaft angle is calculated from the signal from the crankshaft sensor. The calculation can be performed by evaluation electronics located on the sensor, in a central engine control unit or in another control unit.
- an engine control unit makes the crankshaft signal available for other engine sub-assemblies.
- the signal can only be amplified in its signal strength and/or additionally enriched with information.
- Signal processing is also possible, so that the crankshaft angle calculated from the crankshaft signal is distributed as a new crankshaft signal. In the latter case it can be sent digitally in the form of discrete values, preferably it is provided as a continuous analogue signal.
- the internal combustion engine has multiple camshafts. For many internal combustion engines, it makes sense to provide one camshaft for each row of valves in order to minimize the moving masses. For example, two intake camshafts and two exhaust camshafts are provided in a V engine according to the invention.
- At least some, and preferably all, of the camshafts are phased relative to the crankshaft by a cam shaft physically connected to the camshaft.
- the invention also includes internal combustion engines in which only some of the camshafts are equipped with camshaft adjusters or in which one or more camshaft adjusters do not have the properties of claim 1 or participate in the method according to claim 6. These camshaft phasers could have a logical assignment hard coded, or their logical assignment is done by hand.
- camshaft adjusters are controlled or regulated by camshaft control units. These are usually formed by a controller, which is arranged, for example, in part of an electric motor of an electric camshaft adjuster.
- each camshaft adjuster has its own camshaft control unit.
- the camshaft control unit can be used to adjust the camshaft adjuster to a target value predetermined by the engine control unit.
- At least two, preferably all, camshaft control units are connected to one another in line. Connected in line means a linear network topology. This means that the camshaft control units logically form a chain, of which all chain links apart from the outer ones each have a predecessor and a successor. One of the initially outer chain links can be connected to the engine control unit, which then forms the beginning of the chain. The other outer chain link is preferably left unconnected at one end.
- the first network topology is preferably specified physically.
- the camshaft control units are connected to one another, for example by cables.
- the crankshaft signal is transmitted via this first network topology, forwarding of the crankshaft signal being prevented in a first state of a camshaft control unit.
- the crankshaft signal is forwarded. It can be passed on unprocessed or amplified. It can be processed or enriched with additional information ones done for example by modulation.
- the crankshaft signal is preferably replicated by the camshaft control unit in the second state. As soon as the camshaft control unit transmits the crankshaft signal, it sends out an additional signal in parallel.
- the predefined, linear network topology enables a delayed, logical assignment of the camshaft control units to the camshaft adjusters.
- the camshaft adjusters including the camshaft control units, can be provided as identical parts. Installation is also simplified, because camshaft adjusters or camshaft control units cannot be confused during installation.
- the camshaft adjusters can be physically installed together with a camshaft control unit. During assembly, however, the camshaft control unit does not know which camshaft it logically belongs to and therefore which camshaft control signal sent by the engine control unit it should respond to.
- Each camshaft control unit that receives the crankshaft signal determines the additional signals arriving at the same time or within a predetermined time window. If a camshaft control unit only receives the crankshaft signal within a specified time interval, but no additional signal, it assigns itself the logical number 1 in the linear network topology and will henceforth process camshaft control signals from the engine control unit that are intended for the first camshaft. After the logical assignment to the first camshaft, the camshaft control unit changes to the second state. In this, it forwards the crankshaft signal and sends an additional signal at the same time. This can be information about his successful assignment, usually this will include his number.
- the additional signal can also be transmitted on the first network topology the. It is preferably transmitted on a second network topology, for example a CAN bus.
- the second network topology has fewer bandwidth limitations and is not limited to a linear topology. It is therefore advantageous that the second and the first network topology are physically separate and designed differently.
- the camshaft control unit that is physically next in the first network topology receives the crankshaft signal and at the same time the information of the additional signal of the first camshaft control unit, but no further additional signal. This allows her to deduce that she is the second link in the chain and logically assign the number 2 to herself. Like the first camshaft control unit before it, it changes from the first state to the second state and now forwards the crankshaft signal together with its own additional information. All subsequent camshaft control units follow the same principle and can determine their own position in the chain from the amount of additional information sent or from the highest number sent.
- the engine control unit can end the learning process as soon as it receives an additional signal from the last camshaft control unit.
- a PWM or pulse signal could also be generated in which the motor number is communicated to the following motor. This can also be provided as a fallback solution, for example if CAN reception is disrupted.
- each camshaft control unit can be provided with a permanent data memory, for example an EEPROM, in which the information about the logical assignment is stored, so that the learning process only has to be carried out once.
- a permanent data memory for example an EEPROM
- the learning process takes place automatically before the internal combustion engine is started if the engine control unit does not receive any information about its logical assignment from one of the camshaft control units within a predetermined time window.
- teaching takes place each time the internal combustion engine is started.
- the teach-in described in this way is superior to manual assignment because the teach-in only needs to be initiated centrally once. Furthermore, no physical access to the camshaft control units is required after installation. In addition, an incorrect assignment, for example a double assignment, is excluded. There is also little additional effort during assembly, because the camshaft control units are fitted with connectors anyway, so that the additional effort is kept within limits.
- camshaft adjusters are installed on the intake side and on the exhaust side.
- the intake camshafts are often equipped with electric camshaft adjusters and the exhaust camshafts with hydraulic camshaft adjusters.
- the camshaft control units also differ.
- their logical position can be determined in other ways.
- the different camshaft adjuster types can form two chains. Then the teaching method according to the invention is applied to each chain.
- a camshaft position is only regulated after the logical assignment of the corresponding camshaft control unit. This avoids situations in which the internal combustion engine does not start or in which damage can occur due to different cam geometries. Alternatively, control or regulation takes place in a range that allows emergency operation of the internal combustion engine.
- the invention enables a common parts strategy in which identical camshaft adjusters including camshaft control units can be installed by the camshaft control units themselves learning which camshaft they are mounted on and logically assigned to.
- FIG. 1 shows a symbolized representation of an internal combustion engine with a camshaft adjuster, a camshaft control unit and an engine control unit, and
- FIG. 2 shows a symbolized representation of an engine control unit that is connected to four camshaft control units via a first network topology.
- An actuating gear 4 of the camshaft adjuster 3 is constructed as a three-shaft gear, for example a strain wave gear.
- a first shaft of the setting gear 4 is identical to or permanently connected to a belt or chain wheel and rotates in a manner known per se at half the crankshaft speed of the internal combustion engine 1.
- a second, output-side shaft of the setting gear 4 is non-rotatably connected to the camshaft 10 to be adjusted (Fig 2) connected.
- this has a third shaft in the form of an adjusting shaft, which is non-rotatably connected to the motor shaft of an electric motor 5, which is attributable to the camshaft adjuster 3. is coupled.
- the electric motor 5 is controlled by the camshaft control unit 6 via a line 9 .
- the camshaft control unit 6 is via a second network topology, in the present case a CAN bus 8, linked to the engine control unit of the internal combustion engine 1, which is denoted by 7 .
- the engine control unit 7 is only loaded to a minor extent by the processing of data relating to the operation of the camshaft adjuster 3 .
- FIG. 1 shows only one camshaft adjuster 3 .
- the camshaft control unit 6 is linked to the engine control unit 7 and which forms part of a first network topology 16 .
- Line 15 is used to send the crankshaft signal from engine control unit 7 to camshaft control unit 6 .
- the data volume of the transmitted crankshaft signal is only a small fraction of the data transmitted via the CAN bus 8 between the camshaft control unit 6 and the engine control unit 7 .
- the information is thus available practically in real time with the aid of the line 15.
- FIG. 2 shows the first network topology 16 with an engine control unit 7 and four camshaft control units 21, 22, 23, 24, which are connected to one another by a line 15 designed as a cable.
- the camshaft control units 21 , 22 , 23 , 24 are integrated into the respective drive motors of the camshaft adjusters 11 , 12 , 13 , 14 .
- the four camshaft control units 11, 12, 13, 14 form a chain, so that the components are connected to one another in a line.
- all camshaft control units 11, 12, 13, with the exception of the last one are connected to exactly two neighbors, engine control unit 7 being regarded as the zeroth link in the chain. Due to the linear topology, a good order is possible, so that the order is fixed after assembly in the internal combustion engine.
- crankshaft signal which is sent out by engine control unit 7 , is fed to camshaft control unit 11 via line 15 .
- the software on the engine can control whether replication is active or off. As long as the electric motors do not know their logical position (first state), they must not replicate the crankshaft signal and send it on the CAN bus 8 (not shown in Figure 2). If one of the camshaft control units 21, 22, 23, 24 receives a crankshaft signal but no CAN signal from another camshaft adjuster 11, 12, 13, 14 and is not yet logically assigned, then it will appoint itself to be engine number 1 and store this number internally . After that, the camshaft control unit 21 begins to replicate the crankshaft signal on the first network topology 16 and to send information about its number via the CAN bus 8 .
- camshaft control unit 21 If one of the camshaft control units 21, 22, 23, 24 receives a crankshaft signal, a CAN signal from engine 1, no CAN signal from another camshaft phaser 12, 13, 14 and is logically not yet assigned, then it will appoint itself as engine number 2 and save this number internally. After that, the camshaft control unit 22 begins to replicate the crankshaft signal on the first network topology 16 and to send information about its number via the CAN bus 8 .
- camshaft control unit 21, 22, 23, 24 receives a crankshaft signal, a CAN signal from n-1 engines, no CAN signals from other camshaft adjusters 11, 12, 13, 14 and is logically not yet assigned, then it is designate themselves as engine number n and save this number internally.
- the camshaft control unit 23, 24 then begins to replicate the crankshaft signal on the first network topology 16 and to send information about its number via the CAN bus 8.
- the camshaft control units 21, 22, 23, 24 permanently store the determined engine numbers in the internal memory (EEPROM or similar) so that the learning procedure only needs to be carried out once after assembly or when the engine is replaced. Alternatively, the function can also be carried out every time the engine is started.
- the number of camshaft control units 21, 22, 23, 24 is permanently stored in the engine control unit 7, so that there is a termination condition for this learning process of the logical assignment.
- PWM or pulse signal can be generated in which the engine number can be communicated to the following engine, for example if CAN reception is disturbed.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Valve Device For Special Equipments (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021134044.6A DE102021134044B3 (de) | 2021-12-21 | 2021-12-21 | Brennkraftmaschine und Verfahren zum Betrieb einer Brennkraftmaschine |
| PCT/DE2022/100873 WO2023116964A1 (de) | 2021-12-21 | 2022-11-22 | Brennkraftmaschine und verfahren zum betrieb einer brennkraftmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4453390A1 true EP4453390A1 (de) | 2024-10-30 |
| EP4453390C0 EP4453390C0 (de) | 2025-10-08 |
| EP4453390B1 EP4453390B1 (de) | 2025-10-08 |
Family
ID=84463065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22821291.6A Active EP4453390B1 (de) | 2021-12-21 | 2022-11-22 | Brennkraftmaschine und verfahren zum betrieb einer brennkraftmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12497930B2 (de) |
| EP (1) | EP4453390B1 (de) |
| CN (1) | CN118119764A (de) |
| DE (1) | DE102021134044B3 (de) |
| PL (1) | PL4453390T3 (de) |
| WO (1) | WO2023116964A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909194A (en) * | 1989-07-20 | 1990-03-20 | Siemens-Bendix Automotive Electronics L.P. | Modular position controller for variable valve timing |
| SE503397C2 (sv) * | 1994-09-11 | 1996-06-03 | Mecel Ab | Arrangemang och förfarande för ett reglersystem till en förbränningsmotor innefattande ett distribuerat datornät |
| DE10041448A1 (de) * | 2000-08-23 | 2002-03-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
| DE10236507A1 (de) | 2002-08-09 | 2004-02-19 | Aft Atlas Fahrzeugtechnik Gmbh | Steuereinrichtung zum Verstellen des Drehwinkels einer Nockenwelle |
| DE10242659A1 (de) | 2002-09-13 | 2004-03-18 | Aft Atlas Fahrzeugtechnik Gmbh | Steuereinrichtung und Verfahren zum Verstellen des Verhältnisses der Wirkelgeschwindigkeiten zwischen Nocken und Kurbelwelle |
| DE10259133A1 (de) | 2002-12-18 | 2004-07-01 | Aft Atlas Fahrzeugtechnik Gmbh | Anordnung zum Verstellen der Drehwinkelrelation zwischen Nockenwelle und Kurbelwelle |
| DE102005022714A1 (de) | 2005-05-18 | 2006-11-23 | Schaeffler Kg | Vorrichtung mit einem elektrischen Nockenwellenversteller, einer Steuereinheit und einem zentralen Steuergerät |
| DE102012219297B4 (de) | 2011-11-02 | 2023-12-28 | Schaeffler Technologies AG & Co. KG | Verfahren zum Betreiben eines Kraftfahrzeugs |
| US10184860B2 (en) | 2016-04-08 | 2019-01-22 | Infineon Technologies Ag | Control system for power train control |
| DE102019113300B3 (de) | 2019-05-20 | 2020-07-09 | Schaeffler Technologies AG & Co. KG | Verfahren zum Betrieb eines elektromechanischen Nockenwellenverstellers |
| DE102019118689A1 (de) | 2019-07-10 | 2021-01-14 | Schaeffler Technologies AG & Co. KG | Verbrennungsmotor und Verfahren zum Betrieb eines elektromechanischen Nockenwellenverstellers |
-
2021
- 2021-12-21 DE DE102021134044.6A patent/DE102021134044B3/de active Active
-
2022
- 2022-11-22 EP EP22821291.6A patent/EP4453390B1/de active Active
- 2022-11-22 US US18/722,181 patent/US12497930B2/en active Active
- 2022-11-22 CN CN202280069097.4A patent/CN118119764A/zh active Pending
- 2022-11-22 WO PCT/DE2022/100873 patent/WO2023116964A1/de not_active Ceased
- 2022-11-22 PL PL22821291.6T patent/PL4453390T3/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP4453390C0 (de) | 2025-10-08 |
| US20250059929A1 (en) | 2025-02-20 |
| PL4453390T3 (pl) | 2026-02-02 |
| DE102021134044B3 (de) | 2023-03-16 |
| EP4453390B1 (de) | 2025-10-08 |
| WO2023116964A1 (de) | 2023-06-29 |
| CN118119764A (zh) | 2024-05-31 |
| US12497930B2 (en) | 2025-12-16 |
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