37 results about "Tractive effort" patented technology

A drive system for an agricultural vehicle is provided herein that may include a pump unit that may be connected to a power plant and configured to generate power through a flow of hydraulic fluid. A first propulsion motor may be fluidly coupled with a pump unit and configured to drive a first tractive force to a first tractive element by applying a first control signal. A sensor system may be configured to capture data indicative of a slip condition of the first tractive element. A computing system may be operably coupled with the sensor system and the first propulsion motor. The computing system may be configured to detect a slip condition of the first tractive element based on the data from the sensor system and provide a superimposed traction signal to the first tractive element to alter a displacement to the first control signal line.

A control device (1) is provided for adapting a basic operating strategy for temperature control of a vehicle interior (11) and / or a traction battery (12) of an electrically powered motor vehicle (10). The control device (1) is designed to detect at least one operating situation of the motor vehicle (10) by observing at least one operating cycle of the motor vehicle (10) (S1), and, after the at least one operating situation has been detected, to predict (S2) an upcoming operating situation of the motor vehicle (10) if it corresponds to the at least one operating situation, and to temporarily adapt the basic operating strategy for the upcoming operating situation (S3) if the upcoming operating situation corresponds to the at least one operating situation.

The present invention discloses an automatic protection device for the bottom of a furnace mouth, comprising a furnace door, a furnace door body is arranged at the upper side of the furnace door, a furnace door bottom platform is arranged at the lower side of the furnace door, a guide rail is fixedly connected to the outer side of the furnace door bottom platform, a trolley body is slidably arranged on the guide rail, the trolley body is composed of a trolley platform and a trolley chassis, the upper surface of the trolley platform is flush with the upper surface of the furnace door bottom platform, the lower side connecting rollers of the trolley chassis are correspondingly arranged on the guide rail, both sides of the trolley chassis are rotatably connected with connecting rods, and the other end of the connecting rod is rotatably connected to the left and right sides of the front surface of the furnace door body. In the present invention, the trolley obtains horizontal reciprocating motion traction through the lifting power of the furnace door, the trolley and the furnace door realize position interlocking and motion synchronization through the left and right connecting rods, the furnace door is opened to complete the automatic protection of the furnace door bottom by the trolley, and the reliable sealing time of the furnace door and the furnace door bottom is extended.

A vehicle includes a system and method of modeling and controlling tractive effort of a wheel of the vehicle. The system includes an observer, a predictive controller, and an online solver. The observer receives dynamic model parameters of the wheel and determines an estimate of a wheel speed and an uncertainty of the wheel speed using a nonlinear model of the wheel. The predictive controller determines an average gain and a differential gain from the estimate of the wheel speed and the uncertainty of the wheel speed. The online solver calculates a motor torque and a wheel brake torque for increasing tractive effort of the wheel on a road based on the average gain and the differential gain. The motor torque and the wheel brake torque are applied on the vehicle.

A hybrid drive train for a vehicle with at least one internal combustion engine (1), with at least one gear transmission with at least two partial transmissions (3, 4) for shifting without interruption of traction, each having at least one shiftable gear stage, with a plurality of electric machines (EM1, EM2), wherein at least two partial transmissions (3, 4) are each assigned at least one electric machine (EM1, EM2) which is operatively connected or can be brought into operative connection with the internal combustion engine (1), and with at least one energy storage device (6) and with at least one control electronics unit (7) for controlling the electric machines (EM1, EM2), wherein at least one electric machine (EM1, EM2) assigned to a partial transmission (3, 4) can be brought into operative connection with the internal combustion engine (1) via at least one positive shifting element (K1, K2), wherein positive gear stage shifting elements (KL1, KL2, KL3,KL4) are provided, and wherein shifting elements (K1, K2, KL1, KL2, KL3, KL4) assigned to the partial transmissions (3, 4) can be switched by means of a common actuating device, characterized in that for actuating the shifting elements (K1, K2, KL1, KL2, KL3, KL4), partial transmission shafts (10, 11) and / or side shafts (12, 12A, 13, 13A) of the partial transmissions (3, 4) are designed to be axially displaceable.

A distributed power system includes a communication device and a control device. The communication device is configured to be disposed onboard a first vehicle of a vehicle system that also includes at least a second vehicle. The communication device is configured to communicate a discover message. The control device is configured to be operatively connected to the communication device, and, responsive to the communication device receiving a discover reply message from a second vehicle, to generate a configure message for the communication device to transmit to the second vehicle based on an identifier of the second vehicle included in the discover reply message. The configure message includes instructions for the second vehicle to transition to a remote mode of operation in which remote control of tractive and braking efforts of the second vehicle is enabled.

The invention relates to a pantograph (3) for an electrically or hybrid-electrically powered road vehicle (1) for supplying traction energy from a two-pole overhead contact line system. It comprises an erectable support frame (6) which can be rotatably supported on the road vehicle (1) via a base joint (7) on the vehicle side and which carries two contact rockers (11) rotatably connected via a rocker joint (10) on the contact wire side. Each of the contact rockers (11) carries at least one contact strip (15) extending in a transverse direction (Y) of the vehicle, which has a contact element holder (23) and an electrically conductive contact element (22) mounted therein, with a contact surface (16) for a contact wire (4) resting on the contact strip (15).According to the invention, the contact surface (16) of the contact piece (22) projects upwards from the contact piece holder (23) in a vehicle-upward direction (Z) by a projection (S), wherein the contact piece (22) is designed to be elastically flexible and / or is spring-loaded in the contact piece holder (23), so that its contact surface (16) can be deflected relative to the contact piece holder (23) against a spring-loaded restoring force by a contact wire (4) resting on the contact strip (15). This increases the availability of the pantograph (3).

A dumper vehicle includes a chassis, a ground engaging propulsion structure mounted to the chassis; an operator seat supported by the chassis; a body supported by the chassis; a drive arrangement comprising an electric motor housed within the body, said electric motor configured to provide, at least in part, tractive power to the ground engaging propulsion structure; an electric energy storage assembly configured to provide electric power to the electric motor, wherein the electric energy storage assembly is located rearward of the ground engaging structure; and an open topped container for carrying a load therein supported by the chassis, wherein the container is moveable between a transport position for transporting a load and a discharge position for discharging of a load.

The invention relates to a method for operating a drive of a work machine. The drive has a conventional maximum traction profile in which the maximum permissible traction of the drive increases as the output rotational speed of the drive decreases. The method includes receiving an activation signal for activating a grader operation of the work machine, where the grader operation has a limited maximum traction profile. The maximum permissible traction force of the drive device is less intensively increased with a decrease in the output rotational speed of the drive device in the case of a limited maximum traction force curve than in the case of a conventional maximum traction force curve. In addition, the method includes determining a current maximum allowable traction based on the limited maximum traction profile and comparing the current traction with the current maximum allowable traction. In addition, the method comprises adjusting the transmission ratio of the transmission mechanism towards a lower output speed of the driving device based on the comparison.

The invention relates to the technical field of vehicle parking, in particular to a multi-layer lifting transverse and longitudinal moving two-wheeled vehicle garage and a control method thereof.The multi-layer lifting transverse and longitudinal moving two-wheeled vehicle garage comprises a steel frame structure, a plurality of first-layer vehicle carrying plates and a plurality of second-layer vehicle carrying plates are arranged on one side of the steel frame structure, and the number of the second-layer vehicle carrying plates is one more than that of the first-layer vehicle carrying plates; the first-layer vehicle carrying plates are located at the bottoms of the corresponding second-layer vehicle carrying plates respectively, the excessive second-layer vehicle carrying plates are located at the bottom of the steel frame structure, pulley shafts are fixedly connected to the second-layer vehicle carrying plates, and movable pulleys are rotationally connected to the pulley shafts; the two-layer vehicle carrying plate is limited through the lifting limiting assembly, single-point lifting is carried out through the single movable pulley, uneven stress generated in the lifting process of the two-layer vehicle carrying plate is prevented, the stability of the two-layer vehicle carrying plate in the lifting process is improved, and through cooperation of the fixed pulley assembly and the movable pulley, the safety of the two-layer vehicle carrying plate is improved. The traction force required for lifting the second-layer vehicle carrying plate is halved, and the power output in the lifting process is reduced.

The invention relates to a vehicle traction system, a control method, a controller and a control device.The vehicle traction system comprises a traction power supply module, a power battery, a current transformation module and a topology switching module.The electrical connection state of a main current transformation branch is dynamically reconstructed through the topology switching module; the main current transformation branch circuits can be electrically isolated from one another in a pantograph power supply mode, and the fault branch circuit can be quickly isolated and blocked when any main current transformation branch circuit or a traction motor driven by the main current transformation branch circuit breaks down, so that fault expansion is effectively prevented, and the basic operation capacity of a vehicle is guaranteed; meanwhile, when a power battery power supply mode is switched to, a plurality of main current transformation branches can be electrically connected with one another, so that all power of a power battery is gathered to be supplied to a traction system, and it is ensured that the vehicle obtains continuous and sufficient traction force and an auxiliary power source under the working conditions of self-walking in a non-network area and over-equal working conditions; and the adaptability and the operation reliability under complex working conditions can be obviously improved.

The invention relates to a separately excited electric machine (FEM) for a traction drive (TA) of an at least partially electrically powered motor vehicle (KFZ), comprising a rotor shaft (RW) of a rotor (RO) to which a shaft end section (WEA) adjoins, wherein the shaft end section (WEA) has a first opening (EO) and a second opening (ZO) spaced apart from the first opening (EO) in an axial direction of the rotor (RO), a potting body (VK) arranged in the shaft end section (WEA) in which an electrically conductive connecting element (VE) is embedded at least partially, wherein the connecting element (VE) has a distal first end (DEE) and a distal second end (DZE), and the distal second end (DZE) can be guided through the second opening (ZO).a slip ring module (SRM) arranged on a distal end section DE of the shaft end section (WEA) with a slip ring (SR) and a connecting section (VA) arranged on the slip ring (SR), which is electrically connected to the distal first end (DEE) of the connecting element (VE), and a bearing device (LE) which sits on an outer cylindrical surface (AM) of the shaft end section (WEA) between the slip ring module (SRM) and the second opening (ZO) and by means of which the rotor (RO) can be mounted in a housing, and no grooves or recesses are formed on the outer cylindrical surface (AM) of the shaft end section (WEA) in the area of ​​the bearing device (LE).

The invention relates to an enclosure device (12) for an electric traction machine (10) of a motor vehicle, with at least two enclosure elements (14) which are pivotably held relative to each other over a pivoting range (16), whereby the enclosure elements (14) can be placed around the electric traction machine (10) in order to enclose the electric traction machine (10).

The invention discloses a simplified running vehicle physical model adjusting method and device, is suitable for scenes such as games and simulation training, and runs on terminal equipment. The method aims at solving the problems that an existing model is complex in calculation and poor in adaptability, or simplified logic is fixed, and authenticity and performance are difficult to balance. The method comprises the following steps: determining an environment scene, a game type and a terminal equipment performance constraint; adjusting an air resistance coefficient and steering sensitivity according to game types, and adjusting an adhesion coefficient and a rolling resistance coefficient according to environment scenes; acquiring player input and converting the player input into a quantized value; calculating traction force, braking force and three kinds of resistance, and combining performance constraint to determine resultant force; correcting the parameters and the resultant force through slip response logic; and the vehicle motion state is updated and output to the rendering or interaction feedback module. The method can dynamically adapt to different scenes and terminals, reduce calculation overhead, reserve basic physical logic, avoid slipping and out-of-control, and effectively balance physical authenticity, user experience and operation efficiency.

The invention relates to a pantograph (3) for a road vehicle (1) with an electric traction drive (2) for supplying traction energy from an overhead line system. It comprises an erectable support frame (6) which can be rotatably supported on the road vehicle (1) via a base joint (7) on the vehicle side and carries two contact rockers (11) rotatably connected via a rocker joint (10) on the contact wire side. Each of the contact rockers (11) carries at least one contact strip (15) extending in a transverse direction (Y) of the vehicle, which has a contact element holder (16) and an electrically conductive contact element (17) mounted therein with a contact surface (18) for a contact wire (4) resting on the contact strip (15). The sliding strips (15) of each of the contact rockers (11) can be electrically connected to a traction drive (2) via power cables (26) laid along the support rod (6).By routing a power cable (26) along the support rod (6) to each contact rocker (11), which branches into several connecting cables (23) in the area of ​​the respective contact rocker (11) to each of the at least one slip ring (15), each of which is electrically connected to the contact piece holder (16) of this slip ring (15) at a connection point (22), the wear of the contact pieces (17) can be reduced.

The invention discloses a method and system for controlling the traction force of a vehicle body in a snowfield driving state, and the method comprises the steps that an ESC control module monitors the parameter information of the vehicle in the driving state through a sensor, and obtains a rolling resistance coefficient through calculation of a calculation module; the ESC control module judges the running state of the vehicle and judges whether the vehicle is in a deep snow running state or not, if yes, the road surface is calibrated, the slip rate offset is generated, and the ESC control module sends the slip rate offset to the traction force control module to adjust the output size of the traction force of the vehicle; through a calculation module, parameter information detected and collected by an ESC control module is calculated to obtain a rolling resistance coefficient, the slip rate offset is adjusted according to the change of the rolling resistance coefficient, and the slip rate offset is sent to a traction force control system to adjust the output of traction force. The control precision of the traction control system on a deep snow road surface can be improved, and the vehicle running speed is increased.

The invention relates to a pantograph (3) for an electrically or hybrid-electrically powered road vehicle (1) for supplying traction energy from a two-pole overhead contact line system. It comprises an erectable support frame (6) which can be rotatably supported on the road vehicle (1) via a base joint (7) on the vehicle side and which carries two contact rockers (11) rotatably connected via a rocker joint (10) on the contact wire side. At least one contact strip (15) extending in a transverse direction (Y) of the vehicle is resiliently mounted on each contact rocker (11). Each contact strip (15) has a contact surface (16) facing upwards in a vertical direction (Z) of the vehicle for a sliding contact with a contact wire (4).According to the invention, at least one contact strip (15) of each contact rocker (11) is equipped with an electrically conductive, flexible surface structure (19) having a longitudinal extent (L) and a transverse extent (B) such that its longitudinal extent (L) extends along the contact strip (15) in the transverse direction (Y) of the vehicle and its transverse extent (B) projects upwards beyond the contact surface (16) by a projection (S) in the vertical direction (Z) of the vehicle. This provides a current collector (1) with fewer arcs and thus higher availability.

The invention relates to a fuel dispensing unit (1) for refuelling a vehicle, comprising a breakaway device (3) comprising a first shut-off valve unit (4) connected to a fuel supply line of the fuel dispensing unit (1) and a second shut-off valve unit (5) connected to a first end (6) of a fuel hose (7), the fuel hose (7) comprising a fuel nozzle (2) at a second end of the fuel hose (7). The first shut-off valve unit (4) and the second shut-off valve unit (5) are intended to be disconnected when a predetermined tractive force from the fuel hose (7) is exceeded to separate the fuel hose (7) from the fuel dispensing unit (1). The fuel dispensing unit (1) comprises a tilting means (8) fixed to an outer side portion (9) of the fuel dispensing unit (1) and supporting the breakaway device (3), such that the breakaway device (3) is inclined at a predetermined angle (α) with respect to the outer side portion (9) of the fuel dispensing unit (1).

Battery arrangement in a vehicle, comprising a traction battery (19) which is rigidly connected to the vehicle body (14) via at least one holder (18), and a guide element with which the traction battery (19) can be displaced in the transverse direction (y) of the vehicle in the event of a side crash, wherein the holder (18) is designed to be plastically deformable in a predefined manner in the transverse direction (y) of the vehicle for the purpose of forming the guide element, and wherein the holder (18) connects the traction battery (19) or a circumferential, structurally rigid support frame (12) of the traction battery (19) to a cross member (14) of the vehicle body arranged in the longitudinal direction (x) of the vehicle in front of and / or behind the traction battery (19), characterized in that the holder (18) has a closed support frame (21) which, in the installed position, has an upper and lower horizontal frame rail (23, 24) as well as vertical frame rails (25, 26) has a window-like recess (27),which is arranged in a normal position in a transverse plane located in the longitudinal direction (x) of the vehicle, that the upper frame rail (23) is attached to the cross member (14) and the traction battery (19) is attached to the vertical frame rails (25, 26) at a distance from the upper frame rail (23), and that in the event of a side crash, the support frame (21) of the holder (18) is plastically deformable in the transverse direction (y) of the vehicle in the manner of a parallelogram, such that during the parallelogram movement the lower horizontal frame rail (24) together with the two vertical frame rails (25, 26) is displaceable with respect to the upper horizontal frame rail (23) which is fixedly attached to the body-in-white cross member (14), namely in the aforementioned transverse plane.

Methods and systems for controlling a power take-off and engagement of an electric machine of an electric vehicle are described. In one example, a power take-off and engagement of a disconnect clutch are controlled in response to vehicle speed and tractive effort. A first electric machine is fixable coupled to a gear set of a transmission and the driveline disconnect clutch may selectively couple a second electric machine to the gear set.

This application provides a vehicle wheel speed control method, device, vehicle controller, storage medium, and vehicle. The method includes: acquiring a current first driving speed of a drive motor within the vehicle; determining a speed threshold matching the first driving speed, wherein the speed threshold is the maximum speed value reached by the drive motor at each time point under different requested torques; calculating a first difference between the speed threshold and the first driving speed when the first driving speed is greater than or equal to the speed threshold; and controlling the drive motor to adjust the first driving speed based on the first difference. This application addresses the problem in existing technologies where only a traction control system can handle situations such as vehicle sideslip or loss of steering ability, resulting in untimely control and a high risk of driving accidents.

A vehicle powertrain features a first electrical machine with first power electronics, a second electrical machine with second power electronics, and a transmission connected between the electrical machines and an output. To execute a powershift, the first and second electrical machines are operated so that one of the electrical machines is used as the main drive machine, and the other electrical machine is used for tractive force support during the execution of the powershift. When a temperature of at least one of the electrical machines and / or of at least one of the power electronics exceeds a temperature limit value, and / or when a target electric current flowing through at least one of the electrical machines and / or at least one of the power electronics exceeds a current limit value, a powershift is adapted to limit heating of the respective electrical machine and / or the respective power electronics.

The utility model relates to the technical field of AGV manufacturing, in particular to a road surface self-adaptive AGV chassis. The front swing balance wheel assembly, the left swing balance wheel assembly and the right swing balance wheel assembly are all hinged to the frame. After assembly is finished, in a horizontal state, the trend of the front swing balance wheel assembly is kept consistent with the width direction of the frame, and the trend of the left swing balance wheel assembly and the trend of the right swing balance wheel assembly are kept consistent with the length direction of the frame. Thus, on one hand, vibration of the AGV in the running process is effectively reduced, bumping and instability of the AGV can be effectively reduced, and loading and weight bearing are facilitated; and on the other hand, the AGV has excellent driving adaptability on a complex road surface, it is ensured that the chassis wheel trains land together, and the phenomenon that due to the fact that the ground is uneven, part of the chassis wheel trains are suspended or friction force is not enough, and consequently traction force of the AGV is insufficient can be avoided.

The invention discloses a power supply switching method for reducing traction loss of a high-speed maglev train long-stator linear synchronous motor, and belongs to the technical field of traction power supply of high-speed maglev trains. According to the method, the absolute position of a train is obtained in real time, power is supplied to a lower stator section in advance when the train is not completely separated from a current stator section, power supply tasks are dynamically distributed through a plurality of converters, motor inductance and flux linkage parameters are corrected in real time in combination with a coupling coefficient, and voltage feedforward of a current loop is calibrated. And the traction loss of the motor during step changing of the stator section is reduced. By reducing the traction loss in the step changing process, the speed increasing time can be shortened, meanwhile, the current fluctuation is reduced, and the traction stability during high-speed operation is improved.

Disclosed is a method and a system for predicting a road surface condition based at least in part on tire resistive forces and vehicle data (218) obtained from the controller area network (CAN) bus (115) of a vehicle (103). In response to determining that the vehicle is in a steady state, tractive forces can be estimated using the vehicle data (218). The tractive forces and the vehicle speed can be inputted into a trained surface condition detection model (230). The surface condition detection model (230) is trained to predict a probability that a surface is wet or dry based at least in part on the tractive forces. The probability that a surface is wet or dry can be provided to other vehicle systems (206) for adjustment of vehicle operations.

The title of the invention is Method and apparatus for operating a vehicle in low traction environments. The present disclosure relates generally to vehicles, and more particularly to a method and apparatus for operating a vehicle in low traction environments. An example vehicle includes an active suspension system, an electric power steering system, and a controller configured to determine a wheel slip of at least one road wheel of the vehicle, and in response to the wheel slip exceeding a wheel slip threshold, cause a first road wheel of the vehicle to be in an in-toed position relative to a track position of the vehicle, and cause a second road wheel of the vehicle to be in an out-toed position relative to the track position of the vehicle.

The disclosure relates to a method for determining a height position that is to be set for a power lift mounted on a utility vehicle and coupled to an attachment for soil cultivation. A force sensor is used to determine an actual tractive force acting on the power lift. An additional sensor is used to determine at least one soil parameter of the soil that has been cultivated or is to be cultivated. The height position that is to be set is determined based on the actual tractive force and the at least one soil parameter. The disclosure also relates to a utility vehicle having a control unit for carrying out such a method.

Disclosed are various embodiments for predicting a road surface condition based at least in part on tire resistive forces and vehicle data obtained from the controller area network (CAN) bus of a vehicle. In response to determining that the vehicle is in a steady state, tractive forces can be estimated using the vehicle data. The tractive forces and the vehicle speed can be inputted into a trained surface condition detection model. The surface condition detection model is trained to predict a probability that a surface is wet or dry based at least in part on the tractive forces. The probability that a surface is wet or dry can be provided to other vehicle systems for adjustment of vehicle operations.

The invention relates to a current collector (6) for an electrically or hybrid-electrically driven road vehicle (1), for feeding traction energy from contact wires (5) of a two-pole overhead line system. The current collector comprises a support linkage (9) which can be put upright and which comprises at least one support arm (10), the support linkage having a vehicle end (13), at which the support linkage can be supported on a chassis (4) of the road vehicle (1) by means of a base joint (14), and having a contact-wire end (16), to which rocker supports (17) supporting two contact strips (19) are rotatably connected by means of one rocker joint (18) each. The current collector has double electrical insulation, the rocker supports (17) being at an intermediate electrical potential (PI) and being insulated from the contact strips (19), which are at an overhead line electrical potential (PO), by electrical insulators (23) and from the base joint (14), which is at a chassis electrical potential (PC), by an arm portion (24) of the at least one support arm (10), said arm portion being made of an insulating material. According to the invention, the at least one support arm (10) has a sheath (28) which at least partly covers the arm portion (24) and which has an exterior (29) which is repellent to foreign layers, whereby the availability of the current collector (6) is increased while its electrical operating safety is maintained.

A propulsion system for a manual wheelchair includes a mounting clamp and a propulsion drive unit having a drive wheel assembly and a support suspension. The support suspension is configured to provide linear movement of the drive wheel and drive hub assembly relative to the manual wheelchair. The support suspension includes a linear bearing and slide member assembly having at least one linear bearing and a slide member for accommodating the linear movement of the drive wheel assembly and further includes a resilient suspension member that provides a tractive effort force to the drive wheel. The drive wheel assembly is supported on a carriage that is attached to one of the at least one linear bearing or the slide member and a mounting block is attached to the other. The mounting block has a clamp interface with a locating tab that engages a corresponding mounting slot in the mounting clamp.