EP4436803A1 - Verfahren zum ausbilden einer schwenkbaren verbindung zwischen einem zugfahrzeug und einem anhänger, zustands-ermittlungsanordnung und fahrzeug - Google Patents
Verfahren zum ausbilden einer schwenkbaren verbindung zwischen einem zugfahrzeug und einem anhänger, zustands-ermittlungsanordnung und fahrzeugInfo
- Publication number
- EP4436803A1 EP4436803A1 EP22809851.3A EP22809851A EP4436803A1 EP 4436803 A1 EP4436803 A1 EP 4436803A1 EP 22809851 A EP22809851 A EP 22809851A EP 4436803 A1 EP4436803 A1 EP 4436803A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trailer
- towing vehicle
- coupling
- hitch
- vehicle
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/36—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for facilitating connection, e.g. hitch catchers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/02—Bolt or shackle-type couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/58—Auxiliary devices
- B60D1/62—Auxiliary devices involving supply lines, electric circuits or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D53/00—Tractor-trailer combinations; Road trains
- B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
- B62D53/08—Fifth wheel traction couplings
Definitions
- the invention relates to a method for forming a pivotable connection between a towing vehicle and a trailer via a trailer hitch, a status determination arrangement and a vehicle, in particular a commercial vehicle.
- a trailer is to be coupled to a towing vehicle via a trailer hitch, i.e. pivoted to it, the correct locking of the trailer hitch must be checked, i.e. whether the trailer hitch is actually locked.
- Existing systems do this with a camera by using the recorded image to determine directly whether there is an existing connection.
- position sensors or locking sensors are known, with which it is checked whether the respective locking mechanism is closed.
- DE 10 2020 103 099 A1 and DE 10 2020 102 667 A1 each describe a coupling support system in which a camera is aimed at the coupling ball in order to control the approach process between the towing vehicle and the trailer. A vehicle course is determined and this is then followed.
- DE 10 2014 003 953 A1 also describes an assistance system for coupling a trailer to a towing vehicle, with a camera being used for this purpose, which determines the position of the eyelet on the trailer drawbar when reversing. A trajectory is then determined from this, along which the towing vehicle approaches the trailer, with no check being made as to whether the trailer coupling is in the locked state.
- DE 10 2019 007 662 A1 also describes how a towing vehicle and a trailer are adjusted to the correct height, with sensor signals from a camera, a LIDAR sensor, a radar Sensor or an ultrasonic sensor is used.
- DE 10 2018 122 224 A1 describes a monitoring unit for coupling the towing vehicle and trailer, with the vehicle movement being monitored for this purpose. For this purpose, movement information of the towing vehicle or the trailer is evaluated by a sensor device. However, it is not checked whether a correct coupling has taken place
- EP 1 580 043 B1 also describes how the hitch is monitored when a drawbar trailer is attached to the towing vehicle by means of a single sensor device, which can be used to generate a signal indicating the mechanical coupling state of the trailer. If there is no correct coupling, the brake of the towing vehicle and/or trailer is engaged.
- EP 0 794 110 B1, EP 3 297 896 A1 and DE 60 207 502 T2 also describe locking indicators for a fifth wheel plate via a sensor that measures when the locking mechanism is in a closed position.
- DE 10 2020 1 15 065 A1 a position of a sensor pin on the trailer hitch is determined in order to determine the state of the hitch.
- DE 10 2004 029 129 A1 also describes an image sensor of a camera that monitors the movement of a closure element associated with the trailer hitch. If the locking element indicates that the trailer hitch is locked, the towing vehicle is braked. If a trailer hitch with a sensor for detecting the open state of the trailer hitch is used, the towing vehicle can also be braked if a locked state is determined using this sensor. Monitoring of a locking system is also described in EP 3 122 618 B1, with the vehicle being braked when an improper clutch is detected, so that it is not driven off with an open clutch.
- DE 20 2019 104 576 U1 also describes how a vehicle can be driven correctly in front of a trailer.
- DE 10 2018 117 584 A1 also shows an automatic coupling system for the trailer's supply facilities, ie for the transmission of compressed air and energy. Furthermore, locking indicators for a driver's cab are known, for example from DE 34 37 690 A1.
- the task is also to provide a vehicle.
- a method for forming a pivotable connection between a towing vehicle and a trailer via a trailer hitch wherein when the trailer hitch is in a locked state, a pivoting connection is formed between a towing vehicle-side coupling element on the towing vehicle and a trailer-side coupling element on the trailer, with at least following steps: - Determining a coupling state of the trailer hitch using at least one piece of status information from which the coupling state can be derived/derived or which is related in any way to the coupling state, the coupling state being determined after the towing vehicle has approached the trailer, ie the actual approach process is complete and the coupling elements are preferably already touching or have touched, so that the coupling state indicates whether a pivotable connection is formed after the actual approach and coupling process or not, and
- any unexpected positioning of the coupling elements relative to one another can advantageously be canceled or eliminated by the corrective relative movement or corrective movement. It is assumed, for example, that the at least one piece of status information cannot be used to determine, or not plausibly, whether the trailer hitch is in the locked state if it is prevented or not possible to set the trailer hitch in a locked state, for example if the coupling element on the towing vehicle and the trailer-side coupling element are distorted or are not correctly aligned with one another. In this case, depending on the type of detection, an unlocked state can be detected or not plausibly detected which coupling status actually exists. However, such a tension or incorrect positioning can be eliminated in a simple and reliable manner by the corrective movement, so that the locked state can still be set without having to carry out a complex test.
- the corrective movement is caused automatically by the towing vehicle and/or the trailer being set in motion at least briefly.
- Tension can thus already be eliminated by briefly moving the two coupling elements relative to one another, so that, for example, a coupling bolt or a coupling claw can still engage in the respective coupling element if this was previously prevented by the tension. Accordingly, a simple correction of the previously non-locked state is already possible by briefly moving the towing vehicle and/or the trailer. It is assumed that it is only important to bring about a corrective relative movement between the two vehicle parts (towing vehicle and trailer) or coupling elements, which can be done either by moving the trailer or by moving the towing vehicle, or both.
- the corrective movement is caused by a towing vehicle functional unit arranged in the towing vehicle and/or a trailer functional unit arranged in the trailer being automatically controlled, for example by a state determination unit according to the invention or depending on one of the states -Determination unit output control signal
- the towing vehicle functional unit is formed by at least one unit selected from the group consisting of: a towing vehicle drive system, a towing vehicle clutch Transmission unit with a towing vehicle clutch, which can preferably be part of the towing vehicle drive system, a towing vehicle braking system with at least one towing vehicle braking means, for example service brakes and/or parking brakes and/or permanent brakes, a towing vehicle level control system, a towing vehicle steering system for steering a steerable towing vehicle axle, a towing vehicle lifting axle control for raising or lowering a towing vehicle lifting axle, and the trailer functional unit is formed by at least one unit selected from the group consisting of: a trailer drive system, a trailer coupling Transmission unit with a towing vehicle clutch, which
- the corrective movement is caused by the towing vehicle drive system and/or the trailer drive system being controlled with a jerk control signal in such a way that the towing vehicle and/or the trailer is/are driven with a jerk to effect a jerk, ie a brief, jerky forward and backward movement of the towing vehicle and/or the trailer.
- this causes a relative movement or corrective movement between the two vehicle parts, which can be used to release or eliminate tension or misalignments of the coupling elements.
- the towing vehicle clutch transmission unit and/or the trailer clutch transmission unit is or are controlled in such a way that a minimum forward gear or a minimum reverse gear is engaged in the corresponding part of the vehicle and the Towing vehicle clutch and / or the trailer clutch of the respective clutch-gear unit is simultaneously adjusted to an intermediate position in such a way that the respective clutch is allowed to slip in the lowest forward gear or in the lowest reverse gear.
- This is a simple way to automatically generate a jerky movement or a jerk in the present situation and in this way to form the locked state of the trailer hitch if, for example, there is tension or misalignment of the coupling elements.
- the towing vehicle brake system and/or the trailer braking system is also activated in order to brake the towing vehicle and/or the trailer in such a way that the jerky driving of the towing vehicle and/or the trailer is limited.
- the vehicle is also braked, so that the towing vehicle or trailer does not move too much when it is briefly moved forwards and backwards, and damage caused by approaching too closely can be avoided.
- such a jerk is also possible without such braking, in which case the respective clutch is only allowed to "come” briefly and is then immediately actuated again, whereupon the towing vehicle or trailer immediately stops again.
- the corrective movement is caused by the towing vehicle braking system and/or the trailer braking system being controlled with a release control signal in such a way that the towing vehicle braking means and/or the trailer braking means are released for tilt-dependent movement of the towing vehicle and/or the trailer, if necessary. So if the vehicle is parked and it is determined that it is not locked, the brakes on at least one part of the vehicle are released.
- this release of the braking means causes the vehicle to move off and the desired corrective movement is automatically carried out, which releases the tension or misalignment of the coupling elements or can be eliminated.
- the towing vehicle brake system is activated with the release control signal in order to release the towing vehicle brake means, and the trailer brake means in the trailer brake system are or remain applied, or only the trailer brake system with the Release control signal is driven to release the trailer braking means, and the towing vehicle braking means are tightened in the towing vehicle braking system or remain. In this way, only one vehicle part moves and the other remains stationary, as a result of which a corrective relative movement or corrective movement can be caused in an efficient manner.
- the corrective movement is caused by the towing vehicle level control system and/or the trailer level control system being controlled with a height control signal in such a way that a height difference between the coupling element on the towing vehicle and the coupling element on the trailer side Coupling element changed. Tensions or misalignments between the coupling elements can also be released or eliminated in this way in a simple manner.
- a change in the height difference or a correction movement can also be caused by the towing vehicle lifting axles control and / or the trailer lifting axles control is controlled in such a way with a lifting axles control signal or are that a Towing vehicle lift axle and/or a trailer lift axle raises or lowers and thereby changes a height difference between the towing vehicle-side coupling element and the trailer-side coupling element. Raising or lowering the respective lifting axle in this way also results in a change in the height of the structure of the towing vehicle and/or trailer, since the remaining axles are subjected to greater or lesser loads, whereupon the towing vehicle or trailer sinks in or is raised. In this way, too, a corrective movement can therefore be caused in a simple manner.
- the corrective movement is caused by the towing vehicle drive system and/or the trailer drive system being controlled with a drive control signal in such a way that the towing vehicle moves away from moved away from the trailer to realign the two. If there is tension or a misalignment, the two vehicle parts can also be moved slightly apart from one another in such a way that a controlled approach process can take place again, during which tension or misalignments of the coupling elements ideally no longer occur.
- This embodiment can be used, for example, when the corrective movement according to the other embodiments does not result in the locked state being formed, ie there may be tension or malpositions that cannot be easily remedied without realignment .
- the corrective movement is caused by the towing vehicle steering system and/or the trailer steering system being controlled with a steering control signal in such a way that the corresponding steerable vehicle axle(s) turn and the stationary towing vehicle and/or the stationary trailer moves slightly as a result of such a steering movement.
- Advantage is therefore taken of the fact that with any steering movements the respective vehicle part is also set in motion slightly and this can also cause a corrective movement.
- This also has the advantage that the towing vehicle or trailer itself is not set in motion to such an extent that there is a risk of contact with other vehicles or personnel. It can preferably be provided that the steerable towing vehicle axles on the towing vehicle are turned in the opposite direction to the steerable trailer axles, resulting in an opposite and therefore maximum correction movement.
- the towing vehicle drive system and/or the trailer drive system are controlled in such a way that the towing vehicle moves away from the trailer or is turned around in order to realign the two with one another if the correction has been caused several times, for example three times -Movement is determined independently based on at least one status information that the trailer hitch is not in the locked state.
- the coupling state of the trailer hitch is determined using at least two independently determined pieces of state information, for example coupling information and positioning information, after the towing vehicle has approached the trailer, with no or it cannot be plausibly determined whether the trailer hitch is in the locked state if at least one of the independently determined items of state information indicates that the locked state is not present. Accordingly, it can either be determined unequivocally that an unlocked state or no locked state is present if all state Information point out, or it can not be determined plausibly whether the locked state is actually present when a state information on an unlocked state and another state information point to a locked state.
- the coupling state of the trailer hitch is determined in at least the following steps:
- the coupling result indicating whether a pivotable connection between the towing vehicle and the trailer is formed via the trailer hitch or not.
- at least two measuring principles that are independent of one another and also have different effects are used in order to validate the coupling state of the trailer hitch. This ensures that incorrectly determined coupling information does not result in an incorrect coupling state, since a correct coupling result can only be assumed with a high degree of certainty if the positioning information also indicates the same coupling state. Accordingly, the status information, coupling information and positioning information can be mutually checked for plausibility and only then can a final coupling result be output or, for the above method according to the invention, it can be concluded that a locked state is not present or not plausible.
- a wave-based sensor device is preferably used for this purpose, i.e. a sensor device that evaluates waves or radiation in the visible and invisible wavelength range, for example visible light from a camera, laser radiation from a LIDAR sensor, radar radiation from a radar sensor and Ultrasonic radiation from an ultrasonic sensor. All of these wave-based sensor devices make it possible to determine position information relating to an object in the environment that is involved in the pivotable connection.
- the determination of the positioning information has the following steps:
- the wave-based sensor device Detecting at least one object in an environment by the wave-based sensor device and outputting sensor signals, wherein the wave-based sensor device is arranged on the towing vehicle or the trailer;
- position information of the detected object in particular an actual position and/or an actual orientation of the detected object relative to the wave-based sensor device or relative to the towing vehicle o- the trailer on which the wave-based sensor device is arranged, the at least one detected object being the towing vehicle and/or the trailer or a connected object in the environment that is involved in forming the pivotable connection, for example the one on the towing vehicle Coupling element and / or the trailer-side coupling element.
- the wave-based sensor device can, for example, be part of an existing driver assistance system in the vehicle, for example a reversing assistance system, so that no additional sensors need to be installed in the vehicle for this plausibility monitoring of the pivotable connection by determining the positioning information.
- the coupling elements on the towing vehicle and/or on the trailer are not necessarily in the detection range of the wave-based sensor device, since the actual position and/or the actual alignment are determined by geometric considerations from e.g. the actual position and/or the actual orientation of the towing vehicle or trailer can be reconstructed.
- the determination of the positioning information also has the step:
- the positioning information preferably indicates that the trailer hitch is in the locked state could be located if the determined actual position and/or the determined actual orientation and/or the determined position information of the detected object does not change when the towing vehicle moves, and/or there is no relative movement between the towing vehicle and the trailer .
- the sensor signals from the wave-based sensor device can also be used to determine whether the towing vehicle can still move relative to the trailer, which can be used to validate the coupling information, i.e. to confirm it or not.
- the coupling information indicates that the trailer hitch could be in the locked state if it follows from a movement of the locking mechanism of the trailer hitch and/or from a control signal from an electrical actuating mechanism for actuating the locking mechanism that the locking mechanism is in a closed position.
- Information about the clutch status can therefore be derived in a simple manner from a clutch or locking sensor located on one of the clutch elements.
- the towing vehicle jerk and/or the trailer jerk to determine the coupling information via
- An acceleration sensor on the towing vehicle and/or on the trailer can be determined.
- a speed or acceleration sensor can be a wheel speed sensor, for example, preferably an active wheel speed sensor, which detects the speeds at the respective wheels, and the speed or acceleration can be derived from the speeds.
- wheel speed sensor for example, preferably an active wheel speed sensor, which detects the speeds at the respective wheels, and the speed or acceleration can be derived from the speeds.
- other sensors are also conceivable.
- Existing sensors can therefore be used to infer a jerk, which can also indicate whether coupling has taken place. Normally, when the coupling elements are touched, there is an abrupt change in the speed or acceleration of the towing vehicle or trailer.
- the coupling information indicates that the trailer coupling could be in the locked state when the towing vehicle jerk and/or the trailer jolt indicates that the trailer-side coupling element has touched the towing vehicle-side coupling element, in particular the Towing vehicle jerk and/or trailer jerk reach or exceed a jerk limit.
- the coupling information and the positioning information are determined one after the other or in parallel.
- the positioning information is only determined when the coupling information indicates that the trailer hitch could be in the locked state, or vice versa.
- initially data acquisition and evaluation only has to take place for one of the possibilities and only subsequently, for plausibility checking or validation, does a further evaluation of data take place.
- both the coupling information and the positioning information indicate that the trailer hitch could be in the locked state, it is additionally determined whether the towing vehicle jerk and/or the trailer jerk is a specified jerk - Reach or exceed the threshold value, in particular within a time delay after the towing vehicle is set in motion, and the coupling result indicates that a pivotable connection between the towing vehicle and the trailer is formed when the specified jerk threshold value has been reached. Accordingly, after a validated coupling condition, it can be determined again whether the trailer is being pulled with a delay after the towing vehicle has started due to play in the coupling.
- a status determination arrangement for forming a pivotable connection between a towing vehicle and a trailer via a trailer hitch, in particular according to the method according to the invention, with a status determination unit, the status determination unit being designed
- a vehicle in particular a commercial vehicle, consisting of a towing vehicle and a trailer
- a pivotable connection can be formed between a towing vehicle-side coupling element on the towing vehicle and a trailer-side coupling element on the trailer via a trailer hitch when a locking mechanism of the trailer hitch is in a closed position Is brought into position
- the vehicle further comprises the state determination arrangement according to the invention for forming a pivotable connection between the towing vehicle and the trailer via the trailer hitch.
- the trailer hitch can preferably
- - Be designed as a pin coupling in which an eye on a drawbar as a trailer-side coupling element can be held via a coupling bolt as a locking mechanism in a hitch as a towing vehicle-side coupling element in order to form a pivotable connection, or
- a king pin can be held as a trailer-side coupling element via a coupling claw as a locking mechanism on a saddle plate as a towing vehicle-side coupling element in order to form a pivotable connection. Therefore, a flexible use for different types of coupling is given.
- FIG. 1a, 1b schematic views of a vehicle with different trailer couplings
- Fig. 2 is a flow chart of a method for determining a
- FIG. 3 shows a flow chart of the method according to the invention.
- FIGS. 1a and 1b both show a vehicle 1 in schematic form, which consists of a towing vehicle 2 and a trailer 3 coupled thereto, with a pivotable connection V between the two being formed via a trailer hitch 4.
- the trailer 3 is a drawbar trailer 3a with a drawbar 5a and an eyelet 5b arranged on it as a trailer-side coupling element 5 and a towing hitch 6a with coupling bolt 6b as a towing vehicle-side coupling element 6.
- the trailer coupling 4 is therefore designed in the manner of a bolt coupling 4a, with which the eyelet 5b of the drawbar 5a is held via the coupling bolt 6b as a locking mechanism 8 in the hitch 6a and so a pivotable connection V between the drawbar trailer 3a and the towing vehicle 2 is formed.
- the drawbar 5a can be connected rigidly (rigid drawbar) or articulated (turntable) to the trailer frame.
- the trailer 3 is a semi-trailer 3b with a kingpin 5c as the trailer-side coupling element 5 and a fifth wheel plate 6c with a coupling claw 6d as the towing vehicle-side coupling element 6.
- the trailer coupling 4 is therefore designed in the manner of a fifth wheel coupling 4b, in which the kingpin 5c is held via the coupling claw 6d as a locking mechanism 8 on the saddle plate 6c and a pivotable connection V between the semi-trailer 3b and the towing vehicle 2 (semi-trailer) is formed.
- the two vehicles 1 in Fig. 1 a and 1 b therefore differ in particular by the type of trailer hitch 4.
- the trailer hitch 4 can be in a locked state ZV or in an unlocked state ZE, with these two coupling states Z being activated by an adjustment or a movement of the locking mechanism 8, ie the coupling bolt 6b (bolt coupling 4a) or the clutch claw 6d (fifth wheel 4b), for example by means of an electrical actuating mechanism 7 can be adjusted. If the eyelet 5b is correctly positioned in the hitch 6a or the kingpin 5c in the fifth wheel plate 6c, a relative movement between the respective trailer 3 and the towing vehicle 2 that changes the distance can be prevented in the locked state ZV of the trailer hitch 4 or made possible in the unlocked state ZE of the trailer hitch 4 accordingly .
- a pivoting movement and a relative movement between the trailer 3 and the towing vehicle 2 occurring due to wear of the trailer hitch 4 are not to be regarded as distance-changing relative movements within the scope of the invention.
- the coupling state Z which characterizes the state of the pivotable connection V formed via the trailer coupling 4 between the towing vehicle 2 and the trailer 3, can be monitored or determined by a state determination unit 20 in a state determination arrangement 10. This is done by means of a plausibility check, i.e. access is made to two pieces of status information ZI determined independently of one another, which are each related in some way to the coupling state Z or from which this coupling state Z can be derived.
- the status determination unit 20 can, for example, be part of a towing vehicle braking system 2e (EBS, electronic braking system) or a trailer braking system 3f (T(railer)EBS).
- the two independently determined status information items ZI, ie coupling information Kl and positioning information PI accessed:
- the status determination arrangement 10 can, for example, comprise a position sensor 10a, which can be used to directly determine or directly monitor the position S in which the locking mechanism 8 (coupling bolt 6b or coupling claw 6d) is located, i.e. in a closed position SG or in an open position SO.
- the locking mechanism 8 is able to establish and maintain a pivotable connection V between the trailer-side coupling element 5 and the towing vehicle-side coupling element 6, insofar as the eyelet 5b or the kingpin 5c is correctly positioned in the hitch 6a or on the Fifth wheel 6c are positioned (corresponding to the locked state ZV of the trailer hitch 4).
- the position sensor 10a can, for example, monitor the movement of the locking mechanism 8, i.e. the coupling bolt 6b or the coupling claw 6d, and/or actuating signals S7 of the electrical actuating mechanism 7.
- the coupling state Z of the trailer hitch 4 can be derived in the state determination unit 20 .
- the status determination arrangement 10 comprises or has an acceleration sensor 10b and/or a speed sensor 10c, which are arranged on the towing vehicle 2 and/or on the trailer 3, with these in Vehicle 1 may already be present, for example as part of another vehicle unit. From the towing vehicle acceleration a2 and/or trailer acceleration a3 and/or towing vehicle speed v2 and/or trailer speed v3, a towing vehicle jerk j2 and/or a trailer jerk j3 (first time derivative of the respective acceleration a2, a3, second time derivative of the respective speed v2, v3) can be determined.
- the acceleration sensor 10b and/or the speed sensor 10c which are shown only schematically in FIG. 1, can be designed as wheel speed sensors on the individual wheels of the towing vehicle 2 or the trailer 3, for example Measure wheels, from which the speed or acceleration results. Existing sensors in the vehicle can therefore be used.
- the coupling state Z of the trailer hitch 4 can also be derived from this in the state determination unit 20, with a locked state ZV of the trailer hitch 4 only being to be expected if the eyelet 5b or the king pin 5c hits the hitch 6a or the saddle plate 6c in a correct positioning.
- the coupling information K1 which is used in the method described, for example, results from at least one of the possibilities described, ie via the position sensor 10a and/or the acceleration sensor 10b and/or the speed sensor 10c.
- the coupling information Kl then only indicates that the trailer hitch 4 could be in the locked state ZV, since a Correct positioning of the coupling elements 5, 6 can not be checked with these options.
- the coupling information K1 can also be determined using several of the options mentioned, in that the position S; SG, SO of the locking mechanism 8 is checked for plausibility with the jerk j2, j3 monitored or detected via the acceleration sensor 10b and/or speed sensor 10c in order to obtain reliable clutch information Kl.
- state determination unit 20 cannot yet reliably determine which coupling state Z of trailer hitch 4 is actually present. This follows from the fact that it cannot be ensured whether the eyelet 5b is correctly positioned in the hitch 6a or the kingpin 5c is correctly positioned in the fifth wheel plate 6c when the coupling bolt 6b or the coupling claw 6d is brought into the closed position SG.
- a correspondingly determined jerk j2, j3, which is above the jerk limit value jGW, can also lead to an incorrectly derived coupling state Z if the positioning is incorrect.
- the state determination unit 20 therefore also uses the sensor signals S10d of a wave-based sensor device 10d, which is arranged on the towing vehicle 2 or on the trailer 3, and with the help of which a positioning -Information PI can be determined.
- the wave-based sensor device 10d can be formed, for example, by a camera 15a or have one, the camera 15a being able to spatially resolve an object O in its environment U via an image sensor that emits/reflects electromagnetic waves from the object O Radiation detected in particular in the visible range to capture and depending on the sensor signals S10d to generate and output.
- a LIDAR Sensor 15b may be provided, which scans the environment U with laser beams and detects reflected laser radiation, so that an object O in the environment U can be “imaged” in a spatially resolved manner.
- Comparable imaging principles based on the reflection of waves or radiation can be implemented with a radar sensor 15c and/or an ultrasonic sensor 15d, with which objects O in the surroundings U can be scanned. These imaging principles, which are based on the reflection of waves or radiation, are based on determining a distance from an object point on the respective object O in the environment U, on which the respective sensor 15b, 15c, 15c is aligned, by measuring the transit time of the respective radiation is to determine. If the distances to several object points on an object O are determined by changing the orientation of the respective sensor 15b, 15c, 15d (scanning), an image of the respective object O can be generated from this.
- the status determination unit 20 is therefore able, as a function of the generated and output sensor signals S10d of the sensor device 10d, to an “image” of an object O in the surroundings U, which is involved in the formation of the pivotable connection V. ie the towing vehicle 2 and/or the respective trailer 3 to use to validate the coupling state Z.
- the wave-based sensor device 10d is installed on the towing vehicle 2, as shown in FIG.
- the wave-based sensor device 10d can be arranged on a rear 2a of the towing vehicle 2, for example as part of an existing driver assistance system, for example a reversing assistance system. As shown in FIG.
- the wave-based sensor device 10d can also be installed on the trailer 3, with its detection range 11 then being directed forwards, in particular towards the towing vehicle 2, in order to be able to detect the towing vehicle 2.
- This enables status determination unit 20 to determine an actual position P3lst of trailer 3 and/or an actual alignment A3lst of trailer 3, for example relative to sensor device 10d on towing vehicle 2, from sensor signals S10d from sensor device 10d . If the sensor device 10d is arranged on the trailer 3, an actual position P2lst of the towing vehicle 2 and/or an actual alignment A2lst of the towing vehicle 2, for example relative to the sensor device 10d, can be determined from the sensor signals S10d of the sensor device 10d be estimated at trailer 3.
- the actual position POIst of the respectively detected object O (2, 3, 4, 5), which is involved in forming the pivotable connection, can be described by one or more fixed reference points on the respectively detected object O.
- the actual orientation AOIst of the respectively detected object O (2, 3, 4, 5) relates, for example, to a longitudinal center axis L2, L3 of the detected towing vehicle 2 or the detected trailer 3. From the actual position POIst and the actual -Alignment AOIst, the respective object O can thus be reconstructed accordingly.
- the sensor position and the sensor orientation of the sensor device 10d on the towing vehicle 2 or on the trailer 3, for example relative to a fixed reference point or to the longitudinal center axes L2, L3 of the towing vehicle 2 or the trailer 3, are taken into account , which follows from a previous calibration of the sensor device 10d.
- general position information LI with regard to the respectively detected object O in the surroundings U which is involved in the formation of the pivotable connection, i.e.
- mapping algorithms are used for this purpose, for example edge detection, in order to be able to clearly identify the towing vehicle 2 or the trailer 3 or the coupling elements 5, 6 using the sensor signals S10d.
- the actual position P5lst, P6lst and/or the actual alignment A5lst, A6lst of the respective coupling element 5, 6 can also be omitted derive geometric considerations, insofar as these are rigidly attached to the towing vehicle 2 or the trailer 3 or are unchangeable.
- the actual position P5lst and/or the actual Alignment A5lst of the drawbar 5a together with the eyelet 5b (trailer-side coupling element 5) can also be reconstructed based on the specified structure and the dimensions of the drawbar 5a.
- the structure and the dimensions of the drawbar 5a are stored in the status determination unit 20, for example, or the latter can access it in some other way, for example from previous images.
- the actual position P5 Ist and/or the actual alignment A5lst of these trailer-side coupling elements 5 can also be derived from the determined actual position P3lst and/or the actual alignment A3lst of the trailer 3, for example. Also in this case are the structure and the dimensions of the respective trailer-side coupling element
- the actual position POIst or the actual alignment AOIst of the respectively detected object O can be specified relative to the sensor device 10d. In addition, it can also be derived from geometric considerations, taking into account the sensor position and the sensor orientation, how the respectively detected object O is relative to the coupling element 5,
- the actual position P5lst and the actual orientation A5lst of the drawbar 5a including the eyelet 5b relative to the hitch 6a can be specified if the sensor device 10d is on the towing vehicle 2 and has been calibrated accordingly beforehand.
- the actual position P6lst and the actual orientation A6lst of the hitch 6a to the drawbar 5a or to the eyelet 5b can be derived from geometric considerations.
- the coupling state Z of the trailer hitch 4 according to FIG. 2 can be monitored or determined by the state determination unit 20 as follows:
- STO the method is initialized, for example, with the start of a coupling process in which the trailer
- the coupling information Kl is determined, i.e. whether based on the monitored or determined position S; SG, SO of the coupling bolt 6b or the coupling claw 6d (via the position sensor 10a) and/or based on the monitored jerk j2, j3 (via the acceleration sensor 10b and/or the speed sensor 10c), if this exceeds the specified If jerk limit value jGW is reached or exceeded, it can be deduced, as described above, that trailer hitch 4 could be in a locked state ZV. If this is not the case, the system waits until this is the case.
- a locked state ZV this is validated or checked in a second step ST2 in the state determination unit 20 via the shaft-based sensor device 10d by the positioning information PI being determined independently of the coupling information Kl.
- the actual position POIst and/or the actual alignment AOIst of the respective object O (traction vehicle 2 or trailer 3) or of the respective coupling element 5, 6 is determined or estimated as described above.
- a second intermediate step ST2.2 the determined actual position POIst and/or the determined actual alignment AOIst of the respective object O is compared with a specified target position POSoll or a target alignment AOSoll for the respective object O in order to derive the positioning information PI, which also shows whether the trailer hitch 4 could be in the locked state ZV. It is therefore checked based on the position information LI whether the towing vehicle 2 or the trailer 3 or the respective coupling element 5, 6 such are aligned and positioned as is to be expected for the locked state ZV of the trailer hitch 4.
- the respective target position POSoll or the target alignment AOSoll of the respective object O is selected or specified in such a way that with a pin coupling 4a the eyelet 5b on the drawbar 5a is correctly positioned in the hitch 6a or with a fifth wheel coupling 4b the king pin 5c correctly are positioned and aligned in the fifth wheel plate 6c.
- setpoint position POSoll or setpoint alignment AOSoll that is assigned to a visible or sufficiently visible object O can be selected for the comparison. If the king pin 5c or the eyelet 5b or part of the drawbar 5a is not visible to a sensor device 10d on the towing vehicle 2, the target position P3Soll of the trailer 3 is used for a comparison with the actual position P3 Actual of the trailer 3 , from which it can also be estimated whether the rigidly connected kingpin 5c or the eyelet 5b or the drawbar 5a is correctly positioned or aligned with respect to the fifth wheel plate 6c or the towing hitch 6a. The same applies to the hitch 6a or the saddle plate 6c, which are not visible to a sensor device 10d on the trailer 3 and whose correct positioning and alignment can also be derived from a target/actual comparison of the position of the towing vehicle 2.
- the trailer 3 can also be made, for example, for the trailer 3 to be detected via the sensor device 10d and from the actual position P3lst and the actual orientation A3lst
- Actual distance Dlst between a reference point on the drawbar 5a as a trailer-side coupling element 5 to a reference point on the towing vehicle 2, for example to the hitch 6a as a towing vehicle-side coupling element 6 can be determined.
- a locked state ZV can be inferred if the actual distance Dlst reaches a target distance DSoll, which follows from the specified target position P3Soll or target alignment A3Soll of the trailer 3 has.
- an actual angle Wact between a longitudinal center axis L5a of the drawbar 5a and the longitudinal center axis can be calculated from the actual position P3lst and the actual orientation A3lst of the trailer 3 L2 of the towing vehicle 2 can be determined.
- it can be additionally checked, for example, whether a limit angle WG has been exceeded, ie the actual angle W actual is too acute to be able to bring about a locked state ZV at all. This also allows a supposedly locked state ZV determined in the first step ST1 to be checked or validated.
- a third intermediate step ST2.3 can also be used to check whether and to what extent the actual position POIst and/or the actual alignment AOIst change after the first step ST1 it was already determined that a locked state ZV of the trailer hitch 4 could be present and/or in the second intermediate step ST2.2 a match with the target position POSoll and/or target orientation AOSoll of the respective object O was determined. It can therefore be checked whether there is a relative movement Brei between the towing vehicle 2 and the trailer 3 or between the coupling elements 5, 6 during coupling, which indicates that a locked state ZV is incorrectly assumed or another defect exists. In this case, the towing vehicle 2 must be braked accordingly in order to avoid damage.
- a locked state ZV of the trailer hitch 4 could be present and/or in the second intermediate step ST2.2 a match with the target position POSoll and/or target orientation AOSoll of the respective object O was determined
- a fourth intermediate step ST2.4 it can also be checked whether the jerk j2, j3 described above on the towing vehicle 2 and/or reaches or exceeds a specified jerk threshold value jSW on the trailer 3 after the towing vehicle 2 is set in motion.
- a time delay tV of, for example, a maximum of 2s, preferably a maximum of 1.5s, which results in a short, sudden increase of the jerk j2, j3 within the time delay tV.
- the time delay tV is set in such a way that even a small amount of play in the coupling connection is taken into account, which is why the trailer 3 is not immediately pulled along.
- the intermediate step ST2.4 can also take place later, in particular also between the second step ST2 and the third step ST3 in FIG.
- a previously supposedly determined locked state ZV is not confirmed or determined, for example a brake on towing vehicle 2 and possibly .can also be inserted on the trailer 3 in order to avoid damage to lines that may already be connected.
- a correction step STK can be initiated as described below.
- the positioning information PI can first be determined by permanent monitoring of the environment U over time and only then the coupling information Kl when it is derived from the positioning information PI that a locked state ZV could exist.
- both pieces of information Kl, PI can also be continuously checked parallel to one another.
- a correction step STK is carried out according to the invention.
- the correction step STK described below with reference to FIG From which the coupling state Z can be derived, it cannot be determined or cannot be plausibly determined that a correct pivotable connection V is formed between the towing vehicle 2 and the trailer 3 via the trailer hitch 4 .
- a corrective relative movement Brei or a corrective movement BK between the towing vehicle 2 and the trailer 3 or between the towing vehicle-side coupling element 6 and the trailer-side coupling element 5 is caused in the correction step STK by a towing vehicle functional unit in the towing vehicle 2 F2 and/or a trailer functional unit F3 in the trailer 3 can be controlled automatically as described below. Accordingly, the actual orientation AOIst determined above and/or the actual position POIst of the respective objects O involved in the coupling process are corrected in order to ideally convert the trailer hitch 4 into the locked state ZV.
- connection V is subsequently correctly formed or can be formed, so that the locked state ZV of the trailer hitch 4 is established.
- the cause of the corrective movement BK between the towing vehicle 2 and the trailer 3 can be based on Various types can be carried out, with preferably only a slight corrective movement BK being induced by a corresponding activation of the towing vehicle functional unit F2 and/or the trailer functional unit F3, as described below:
- the towing vehicle 2 and/or the trailer 3 is driven by a corresponding electrical activation of a towing vehicle drive system 2b or a trailer drive system 3c, insofar as it is a trailer 3 with such a functionality (E- Trailer) is driven for a short time with a jerk in order to set the towing vehicle 2 and/or the trailer 3 forwards or backwards accordingly for a short time, i.e. to bring about a so-called jerk.
- the status determination unit 20 outputs a pull-back control signal S20a to the towing vehicle drive system 2b or the trailer drive system 3c.
- a towing vehicle clutch transmission unit 2c in the towing vehicle drive system 2b or a trailer clutch transmission unit 3d in the trailer drive system 3c is actuated in such a way that the smallest forward gear VGO or the smallest reverse gear RGO is engaged becomes.
- a towing vehicle clutch 2d or trailer clutch 3e of the respective clutch-gear unit 2c, 3d is adjusted to an intermediate position, i.e. the respective clutch 2d, 3e is allowed to slip in the lowest forward gear VGO or reverse gear RGO, so that the towing vehicle 2 and/or the trailer 3 moves in the respective direction (forward/backward) only very slightly with a jerk, e.g. only a few centimetres.
- a towing vehicle braking system 2e or a trailer braking system 3f (if present) is activated in order to control the towing vehicle 2 or the trailer 3 by actuating the towing vehicle - Braking means 2f or trailer braking means 3g, for example service brakes or parking brakes, and therefore to limit the jerky drive movement of the towing vehicle 2 or trailer 3, i.e. only allow a very slight jerk in the respective direction.
- the towing vehicle brake system 2e and/or the trailer brake system 3f (if present) is controlled in correction step STK in this way or that the towing vehicle brakes 2f or the trailer brakes 3g are released, preferably by axle, e.g. initially a tandem axle or a steering axle when using a turntable trailer.
- axle e.g. initially a tandem axle or a steering axle when using a turntable trailer.
- the towing vehicle brakes 2f are released while the trailer brakes 3g are or remain applied, or vice versa, so that a corrective movement BK between the towing vehicle 2 and the trailer 3 is caused in any case.
- the coupling element 6 on the towing vehicle and/or the coupling element 5 on the trailer can be strained so that the trailer coupling 4 does not close properly. If the towing vehicle braking means 2f or the trailers are nger brake means 3g is released, for example by the status determination unit 20 in the correction step STK transmitting a release control signal S20b to the towing vehicle brake system 2e and/or to the trailer brake system 3f (with supply lines already plugged in), this can automatically lead to at least a slight movement of the towing vehicle 2 and/or the trailer 3 depending on the environmental conditions, such as a slope of the ground, and/or due to an existing tension between the two coupling elements 5, 6.
- a subsequent height correction of the towing vehicle 2 relative to the trailer 3 is provided within the correction step STK. Therefore, it is assumed that a distortion of the coupling elements 5, 6 is caused by improper or unfavorable height adjustment.
- the status determination unit 20 sends a height control signal S20c to a towing vehicle level control system 2g (EGAS, Electronically Controlled Air Suspension) and/or a trailer level control system 3h in order to calculate a height difference dH between the two coupling elements 5, 6, e.g. 10 cm up and/or down.
- a towing vehicle level control system 2g EGAS, Electronically Controlled Air Suspension
- a trailer level control system 3h in order to calculate a height difference dH between the two coupling elements 5, 6, e.g. 10 cm up and/or down.
- correction step STK provides for a subsequent height correction of towing vehicle 2 relative to trailer 3 by status determination unit 20 using a lift - Axis control signal S20g to a towing vehicle lifting axle control 2k and/or a trailer lifting axle control 3I in order to change the height difference dH between the two coupling elements 5, 6.
- a towing vehicle lifting axle 2I and/or a trailer lifting axle 3m is lowered or raised, whereupon the structure of the towing vehicle 2 or trailer 3 is lowered or raised because the other axles are loaded more or less heavily become.
- correction step STK involves realigning towing vehicle 2 and/or the Trailer 3 provided. If, based on the independently determined status information ZI, it cannot be determined, or cannot be plausibly, that a correct swiveling connection V is being formed between the towing vehicle 2 and the trailer 3 via the trailer hitch 4, and at least one of this status information ZI additionally indicates this that the coupling elements 5, 6 are not positioned correctly in relation to one another in order to form a correct pivotable connection V, a realignment is provided.
- the hitch 6a or the saddle plate 6c is still open, for example, while the actual distance Dlst mentioned in the second intermediate step ST2.2 has already reached or fallen below a target distance DSoll of 2m, for example, this indicates that the eyelet 5b on the Drawbar 5a has not hit the hitch 6a or the king pin 5c, the saddle plate 6c.
- the towing vehicle 2 and/or the Trailer 3 is first braked by the status determination unit 20 transmitting a corresponding brake control signal S20d to the towing vehicle brake system 2e and/or the trailer brake system 3f. Otherwise this could lead to damage to the towing vehicle 2 or trailer 3 or the Drawbar 5a or kingpin 5c can be damaged if they have not hit and the coupling process is continued.
- the status determination unit 20 then sends a drive control signal S20e to the towing vehicle drive system 2b and/or the trailer drive system 3c in order to move the towing vehicle 2 and/or the trailer 3 away from one another accordingly, so that both are realigned with one another can.
- a new coupling process or process of approaching the coupling elements 5, 6 can then take place, during which ideally no more tension between the coupling elements 5, 6 occurs.
- correction step STK provides for the stationary towing vehicle 2 and/or the stationary trailer 3 to be steered by a steering movement LB of a steerable towing vehicle axle 2i and/or a steerable trailer axle 3k in motion. If the coupling elements 5, 6 are tense and the trailer hitch 4 therefore does not close properly, such a steering movement LB in the state can help to release this tension.
- the steering movement LB for example on a front axle of the towing vehicle 2, also causes the entire towing vehicle 2 to move slightly, in particular the rear end 2a of the towing vehicle 2, on which the coupling element 6 on the towing vehicle side is also seated.
- a steering movement LB can also be carried out on it when stationary. Overall, such a steering movement LB can be performed on any steerable towing vehicle axle 2i and/or trailer axle 3k while stationary.
- the status determination unit 20 inputs a steering control signal S20f to a towing vehicle steering system 2h and/or in the correction step STK Trailer steering system 3i in order to steer the corresponding steerable vehicle axle(s) 2i, 3k, whereupon there is a corrective movement BK between the towing vehicle 2 and the trailer 3 or the two coupling elements 5 , 6 is coming.
- a corrective movement BK between the towing vehicle 2 and the trailer 3 or the two coupling elements 5 , 6 is coming.
- This steering movement LB when stationary can also cause a corrective movement BK between the towing vehicle 2 and the trailer 3, which releases the tension in the coupling elements 5, 6 and ideally allows the locked state ZV of the trailer coupling 4 to be set.
- a final test step STP it can be checked whether after the correction movement BK has been caused in the correction step STK according to at least one of the embodiments mentioned, the coupling bolt 6b or the coupling claw 6d is in the closed position SG, for example by only the position sensor 10a is read accordingly.
- a plausible check can again be carried out by determining the coupling information K1 and the positioning information PI as to whether the pivotable connection V is formed correctly is. It can then be output as a coupling result KE that there is a high probability that a correct pivotable connection V is formed via the trailer hitch 4, insofar as the respectively ascertained information items Kl or Kl and PI indicate this.
- the correction step STK can be repeated as often as desired, but preferably after the third correction attempt and/or after causing a realignment in the fifth embodiment, a message will be issued to a teleoperator/vehicle driver that forming a pivotable connection V is not possible.
- the towing vehicle 2 is positioned in front of the trailer 3 and the parking brake is engaged, for example with an actual distance Dlst between the coupling elements 5, 6 of between 1 m and 2m for a drawbar trailer 3a and 5m for a Semi-trailer 3b. If it is not possible to position the towing vehicle 2 in front of the trailer 3 , the towing vehicle 2 can be positioned next to the trailer 3 autonomously.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021130865.8A DE102021130865A1 (de) | 2021-11-25 | 2021-11-25 | Verfahren zum Ausbilden einer schwenkbaren Verbindung zwischen einem Zugfahrzeug und einem Anhänger, Zustands-Ermittlungsanordnung und Fahrzeug |
| PCT/EP2022/080440 WO2023094122A1 (de) | 2021-11-25 | 2022-11-01 | Verfahren zum ausbilden einer schwenkbaren verbindung zwischen einem zugfahrzeug und einem anhänger, zustands-ermittlungsanordnung und fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4436803A1 true EP4436803A1 (de) | 2024-10-02 |
Family
ID=84361643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22809851.3A Pending EP4436803A1 (de) | 2021-11-25 | 2022-11-01 | Verfahren zum ausbilden einer schwenkbaren verbindung zwischen einem zugfahrzeug und einem anhänger, zustands-ermittlungsanordnung und fahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250026161A1 (de) |
| EP (1) | EP4436803A1 (de) |
| CN (1) | CN118284526A (de) |
| DE (1) | DE102021130865A1 (de) |
| WO (1) | WO2023094122A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7658335B2 (ja) * | 2022-06-27 | 2025-04-08 | トヨタ自動車株式会社 | 被牽引車両接続判定システム |
| US12365207B2 (en) * | 2023-03-28 | 2025-07-22 | GM Global Technology Operations LLC | Methods and systems for estimating trailer tongue load |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD234991A3 (de) | 1983-10-31 | 1986-04-23 | Ifa Automobilwerke Veb | Anordnung einer kombinierten verschleiss- und verriegelungsanzeige an fahrerhausverschluessen |
| NZ314186A (en) | 1996-03-04 | 1998-02-26 | Holland Hitch Co | Electronic trailer hitch coupling control system |
| US6452485B1 (en) | 2000-01-28 | 2002-09-17 | The Holland Group, Inc. | Electronic system for monitoring a fifth wheel hitch |
| DE102004014497A1 (de) | 2004-03-25 | 2005-11-17 | Deere & Company, Moline | Kombination aus Zugfahrzeug und Anhängegerät |
| DE102004029129B4 (de) | 2004-06-17 | 2008-08-28 | Daimler Ag | Verfahren und Vorrichtung zur Ankupplung eines Anhängers an ein Kraftfahrzeug |
| DE102014003953A1 (de) | 2014-03-20 | 2015-09-24 | Man Truck & Bus Ag | Kamerabasiertes Fahrerassistenzsystem eines Zugfahrzeugs, insbesondere eines Zugfahrzeugs eines Nutzfahrzeuggespanns |
| US9975588B2 (en) | 2014-03-24 | 2018-05-22 | Saf-Holland, Inc. | Fifth wheel coupler safety control system |
| US9723692B2 (en) | 2015-05-20 | 2017-08-01 | Saf-Holland, Inc | Fifth wheel coupling detection system with inspection and indication lighting arrangement |
| AU2017314484A1 (en) | 2016-08-24 | 2019-03-21 | Data Intrans Pty Ltd | Trailer safety systems and methods |
| GB2566493B (en) | 2017-09-15 | 2020-02-26 | Jaguar Land Rover Ltd | System and method for a trailer towable by a vehicle |
| AU2018425457B2 (en) * | 2018-06-01 | 2025-04-03 | Paccar Inc | Systems and methods for automatically updating a model of vehicle turning dynamics |
| DE102018117584A1 (de) | 2018-07-20 | 2020-01-23 | Jost-Werke Deutschland Gmbh | Steckkupplungssystem sowie kupplungssystem |
| DE102018122224B4 (de) | 2018-09-12 | 2023-10-19 | Saf-Holland Gmbh | System zur Überwachung einer Kopplung sowie eine Stützeinheit |
| US11433812B2 (en) * | 2018-10-29 | 2022-09-06 | Ford Global Technologies, Llc | Hitching maneuver |
| SE1851464A1 (en) | 2018-11-27 | 2020-05-28 | Scania Cv Ab | Method and control arrangement for adjusting coupling height of a vehicle |
| US11155133B2 (en) | 2019-02-04 | 2021-10-26 | Ford Global Technologies, Llc | System and methods for vehicle alignment control |
| US11208145B2 (en) | 2019-02-07 | 2021-12-28 | Ford Global Technologies, Llc | Automated hitching system with steering acquisition and handoff |
| US11904778B2 (en) | 2019-05-14 | 2024-02-20 | Magna Electronics Inc. | Vehicular rear vision system with trailer connection verification |
| US11560028B2 (en) | 2019-06-07 | 2023-01-24 | Ford Global Technologies, Llc | Methods and apparatus for payload estimation and hitch condition detection using integrated sensors |
| DE202019104576U1 (de) | 2019-08-20 | 2019-09-02 | Knott Gmbh | Vorrichtung zum Positionieren von zwei Fahrzeugen und Anhänger und Gespann mit einer solchen Vorrichtung |
| US11155298B2 (en) * | 2019-09-03 | 2021-10-26 | Ford Global Technologies, Llc | Modified steering angle at completion of hitch assist operation |
| EP4031423B1 (de) * | 2019-09-17 | 2024-10-16 | Volvo Truck Corporation | Automatische zugversuche für gelenkfahrzeuge |
-
2021
- 2021-11-25 DE DE102021130865.8A patent/DE102021130865A1/de active Pending
-
2022
- 2022-11-01 WO PCT/EP2022/080440 patent/WO2023094122A1/de not_active Ceased
- 2022-11-01 US US18/713,214 patent/US20250026161A1/en active Pending
- 2022-11-01 CN CN202280077463.0A patent/CN118284526A/zh active Pending
- 2022-11-01 EP EP22809851.3A patent/EP4436803A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250026161A1 (en) | 2025-01-23 |
| CN118284526A (zh) | 2024-07-02 |
| WO2023094122A1 (de) | 2023-06-01 |
| DE102021130865A1 (de) | 2023-07-06 |
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