B60W2300/125

Regenerative braking system and electrically-driven work vehicle using regenerative braking system

A power regeneration device 21 that converts the power of a main engine DC line 16 connected to a main engine power generator 12 through a rectification circuit 14 to supply the converted power to an accessory DC line 34 connected to an accessory power generator 31 through a rectification circuit 32 includes a plurality of power conversion modules 221 to 22N configured such that input sections 221a to 22Na are connected in series. The main engine power generator 12 and a power consumption device 15 are controlled such that a voltage input to the power regeneration device 21 does not exceed a voltage upper limit value Vm and a portion between a positive electrode terminal (+) and a negative electrode terminal (−) of each of the input sections of the power conversion modules to be stopped is short-circuited by a bypass device and the voltage upper limit value Vm is decreased when some of the plurality of power conversion modules 221 to 22N are stopped. With this configuration, operational continuity can be improved while a device size increase is prevented.

Conveying vehicle

Provided is a conveying vehicle that ensures efficiently travelling while suppressing vehicle slip. A dump truck 100 includes a vehicle body 101 provided with wheels 103 and a vehicle control device 300 and travels on a travel route. The vehicle control device 300 calculates and stores slip limit values at a plurality of positions on the travel route, reads out the slip limit values to calculate at least one of a maximum acceleration and a maximum deceleration of the dump truck 100 at which the wheels 103 is capable of maintaining a grip state against a road surface, and sets a target travel speed at a travel position between the dump truck 100 and a target position according to a target speed at the target position and at least one of the maximum acceleration and the maximum deceleration.

Control unit and a method for determining a value indicative of a load bearing capability of a ground segment supporting a vehicle
11834034 · 2023-12-05 · ·

The present invention relates to a control unit for determining a value indicative of a load bearing capability of a ground segment supporting a vehicle. The control unit is configured to issue a control signal to the vehicle to thereby impart a motion change of the vehicle, and receive response information from the vehicle indicative of the vehicle's response to the imparted motion change. The control unit is further configured to, based on the response information, determine a vertical position change of at least one wheel of the vehicle, and based on the determined vertical position change and the imparted motion change, determine the value indicative of the load bearing capability of the ground segment.

VEHICLE MOTION MANAGEMENT WITH A REDUNDANT WHEEL CONTROL SAFETY NET FUNCTION

A motion support device, MSD, control unit for a heavy duty vehicle, configured to control one or more MSDs associated with a wheel on the vehicle, wherein the MSD control unit is configured to be communicatively coupled to a vehicle motion management, VMM, unit for receiving control commands from the VMM unit comprising wheel speed and/or wheel slip requests to control vehicle motion by the one or more MSDs. The MSD control unit is configured to obtain a capability range indicating a range of wheel behaviors of the wheel for which the VMM unit is allowed to influence the behavior of the wheel by the control commands, monitor wheel behavior and to detect if wheel behavior is outside of the capability range, and trigger a control intervention function in case the monitored wheel behavior is outside of the capability range.

A METHOD FOR CONTROLLING A PLATOON OF VEHICLES
20210331674 · 2021-10-28 · ·

The invention relates to a method for controlling a platoon (10) of vehicles (1, X), wherein the platoon (10) comprises a leading vehicle (1) and at least one following vehicle (X) following the leading vehicle (1), wherein the leading and the following vehicle (1, X) at least to a certain extent are commonly controlled by a platoon control system (500) so as to drive at a common speed, wherein the method comprises the steps of: —transmitting data (200) from each vehicle (1, X) to the control system (500) comprising information on a current maximum engine torque output and a potential maximum torque output of respective vehicle (1, X); —identifying (300) which one of the lead and the at least one following vehicle (1, X) that limits an average speed (Va) of the platoon (10); and —increasing (400) the setting of the maximum engine torque output for the vehicle (1, X) identified to limit the average speed (Va) of the platoon (10).

PRECISE PARKING METHOD, APPARATUS AND SYSTEM OF TRUCK IN SHORE-BASED CRANE AREA
20210327271 · 2021-10-21 ·

The present disclosure provides a method, a device, and a system for parking a truck. The method includes a main controller acquiring real-time point cloud data by scanning a lane crossed by a shore crane using a laser radar; the main controller clustering the real-time point cloud data to obtain a set of point clouds for the truck moving in the lane; and the main controller obtaining a real-time distance from the moving truck to a target parking space based on the set of point clouds and a vehicle point cloud model; the main controller broadcasting a message containing the real-time distance, such that a vehicle controller controls the moving truck to stop at the target parking space based on the real-time distance contained in the message.

HYBRID VEHICLE PREDICTIVE POWER CONTROL SYSTEM SOLUTION
20210291803 · 2021-09-23 ·

The embodiment of the invention provides a predictive power control system for hybrid vehicles. The system is mainly specific to the application scenarios of long-distance freight heavy trucks. Based on the vehicle configuration parameters and the current operating conditions, and with the aid of a vehicle-mounted expressway electronic navigation three-dimensional map, the system can be used to accurately and real-timely predict the dynamic road load power time-space function within the range of tens of kilometers of the electronic horizon in front of the vehicle; an electric power shunt device is commanded through a vehicle controller, and the flow direction and amplitude of 100-kilowatt level electric power can be accurately and continuously adjusted among an engine-driven generator set, a battery pack and a driving motor within tens of milliseconds of system response time so that an engine works stably in the high efficiency area of the engine for a long time; and the road load transient power balance required by a vehicle dynamic equation can be met through hundreds of kilowatts of fast charging and discharging of the battery pack in real time. Compared with traditional diesel heavy trucks, the hybrid heavy truck has the advantage that the overall fuel consumption and emissions in real world operation are reduced greatly on the premise of ensuring the vehicle power, freight timeliness and driving safety.

Regenerative electrical power system with state of charge management in view of predicted and-or scheduled stopover auxiliary power requirements
11094988 · 2021-08-17 · ·

Systems and methods to control recapture and use of energy to provide an APU include a vehicle having an electrically powered drive axle to provide supplemental torque to the vehicle to supplement primary motive forces applied through a separate drivetrain powered by a fuel-fed engine of the vehicle. The vehicle further includes an energy store to supply the electrically powered drive axle with electrical power or receive energy recovered using the electrically powered drive axle. The vehicle also includes the APU coupled to receive electrical power from the energy store for stopover operation and without idling of the fuel-fed engine. Further, the vehicle includes a hybrid control system for managing, based on an estimated travel time to a stopover location, an SoC of the energy store while the vehicle travels over a roadway to provide a target SoC of the energy store when the vehicle arrives at the stopover location.

VEHICLES, METHODS, AND DEVICES FOR VEHICLE RETARDER CONTROL AND DISPLAY
20210245752 · 2021-08-12 ·

Industrial vehicles that include a speed sensor configured to generate a speed sensor signal, a payload sensor configured to generate a payload sensor signal, an inclination sensor configured to generate an inclination sensor signal, a wheel motor connected to a wheel of the industrial vehicle, and a controller. The wheel motor includes an electric retarder device for applying a retardation force to the wheel. The controller is configured to receive the speed sensor signal, receive the payload sensor signal, receive the inclination sensor signal, determine a required retardation force for the industrial vehicle based on the payload sensor signal and the inclination sensor signal, determine an available retardation force for the industrial vehicle based on the speed sensor signal, and generate an output indicating the required retardation force for the industrial vehicle relative to the available retardation force for the industrial vehicle.

HEAVY TRUCK HYBRID POWER SYSTEM AND CONTROL METHOD

A heavy hybrid truck is powered by a non-electric powered medium and an electric powered axle. The electric powered axle assists the non-electric powered medium when load changes are detected. The electric powered axle is sourced by a rechargeable battery. The non-electric powered medium is either a fossil fuel combustion engine, a biofuel engine, a hydrogen engine, or a combination.