7 results about "Tractive effort" patented technology

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).

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.

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.

The application discloses a reverse calculation method and system for engine pump wheel resistance torque in a vehicle sudden acceleration working condition, and relates to the field of vehicle dynamics simulation and engine bench test. The method comprises the following steps: acquiring vehicle parameters and establishing a hydraulic torque converter characteristic mapping table; calculating transient vehicle speeds at each discrete time point of sudden acceleration; comprehensively solving rolling resistance, air resistance and inertial tractive force to obtain total vehicle tractive force; reversely topologically calculating turbine end resistance torque and rotating speed along a transmission system; performing nonlinear calculation by using a multi-step smooth iteration algorithm to obtain engine dynamic rotating speed and pump wheel resistance torque; and generating and outputting a bench loading curve. The application comprehensively considers vehicle coupling resistance and hydraulic torque converter nonlinear characteristics, replaces traditional linear equivalence by step-by-step reverse deduction, significantly improves pump wheel resistance torque calculation precision, can generate high-fidelity dynamic loading instructions, truly restores engine actual stress state under a sudden acceleration working condition, and meets heavy and special vehicle bench transient test requirements.

The embodiment of the application provides a kind of determination method and device of road surface adhesion coefficient, storage medium, electronic equipment, wherein, the method comprises: according to the acceleration of target vehicle collected by sensor, determine the first road surface adhesion coefficient;According to the tractive effort of the target vehicle, determine the second road surface adhesion coefficient, and according to the change information of the target vehicle, determine the weight of the second road surface adhesion coefficient, wherein, the change information at least includes one of the following: throttle pedal opening degree change rate, brake pedal opening degree change rate, yaw angular velocity change rate;According to the first road surface adhesion coefficient, the second road surface adhesion coefficient and the weight of the second road surface adhesion coefficient, determine target road surface adhesion coefficient, solve the problem that the accuracy of road surface adhesion coefficient calculated in the related art is lower.

This application relates to a traction power holding control method, unit, device, and vehicle during power supply switching. Before the vehicle reaches the phase-splitting zone, if a phase-splitting warning signal is received, the power battery system is controlled to supply power to the intermediate DC circuit in a manner matching the voltage of the intermediate DC circuit, and the rectifier is controlled to gradually reduce the power drawn from the grid. When the real-time traction power obtained is less than the preset power, the main circuit breaker is controlled to open and block the rectifier. After the main circuit breaker is opened, the power battery system maintains the voltage stability of the intermediate DC circuit until the grid voltage obtained after passing through the phase-splitting zone is greater than or equal to the preset voltage. In this application, by continuously supplying power to the vehicle during the phase-splitting period, the longitudinal impulse of the train caused by traction unloading is avoided, and the stability of vehicle operation is improved. At the same time, the phase-splitting accident caused by a sudden drop in speed on uphill sections is avoided, ensuring the safety and continuity of train operation.