Abstract: A utility vehicle is configured for independently controlling torque at each of the ground-engaging members.

Abstract: The vehicle control system includes a braking force generating device (6, 22) configured to generate a braking force to shift a load of a vehicle to a side of front wheels thereof at an initial stage of a cornering, and a control device (31) configured to control the braking force generated by the braking force generating device. The control device calculates an additional deceleration (Gxadd) according to vehicle state information, calculates a lateral jerk equivalent value (Jy) according to the vehicle state information, and sets a lateral jerk correction coefficient (Kj) for weakening the additional deceleration. The control device corrects the additional deceleration by the lateral jerk correction coefficient (K), and calculates an additional braking force (Fbadd) to be generated by the braking force generating device according to the corrected additional deceleration.

Abstract: Provided are a vehicle obstacle-avoidance method, an apparatus, and a vehicle. The method includes: acquiring obstacle information, in a case that an obstacle is detected; determining whether the obstacle is a straight-going obstacle in a planned route, according to the planned route and the obstacle information; acquiring a center-of-gravity position of a vehicle, a safe stopping distance and a vehicle current speed, in a case that the obstacle is determined as the straight-going obstacle in the planned route; determining a maximum acceleration of the vehicle, according to the center-of-gravity position; and determining a straight-going obstacle-avoidance strategy, according to the obstacle information, the maximum acceleration, the safe stopping distance and the vehicle current speed.

Abstract: A vehicle control method is applied to a vehicle 1 in which a front wheel 2 is driven by an engine 4, and the method includes a basic torque setting step of setting basic torque to be generated by the engine 4, based on an operational state of the vehicle 1; an acceleration torque setting step of setting acceleration torque, based on a reduction in steering angle of a steering apparatus 5 mounted on the vehicle 1; a torque generation step of controlling the engine 4 so that torque based on the basic torque and the acceleration torque is generated; and an acceleration torque changing step of changing the acceleration torque, based on a vehicle-width-direction mounting position of a steering wheel 6 and an operation direction of the steering wheel 6 when the steering angle is reduced.

Abstract: A method of controlling posture of a vehicle is provided to determine a minute tendency of understeer or oversteer of the vehicle and to control the posture of the vehicle when recognizing the minute tendency of the understeer or oversteer while driving the vehicle straight. The includes determining whether torque is applied to drive wheels while driving the vehicle and acquiring equivalent inertia information of a drive system in real time based on drive system operation information in response to determining that the torque is being applied to the drive wheels. The understeer or oversteer of the vehicle is determined from the equivalent inertia information obtained in real-time.

Abstract: A brake fluid pressure control device for vehicles with bar handle which is configured to start a holding control of a fluid pressure of a wheel brake according to wheel deceleration calculated based on a wheel speed of the vehicle is provided. In the brake fluid pressure control device, the vehicle includes an acceleration sensor which is configured to detect acceleration in a front-rear direction of the vehicle, acceleration, detected by the acceleration sensor, which occurs in a rearward direction when the vehicle is decelerating is detected as a positive value, and the holding control is started when it is judged that the acceleration detected by the acceleration sensor is larger than or equal to a detection acceleration threshold value and the wheel deceleration is smaller than or equal to a wheel deceleration threshold value.

Abstract: Provided are drivetrain systems of electrical vehicles comprising range extending turbines operable to dissipate some or all power generated by electrical drive motor-generators coupled to vehicle wheels. Also provided are methods of operating such systems. Power dissipation using turbines may be used, for example, when batteries cannot be further charged because of their current state of charge or some other conditions. This turbine power dissipation effectively extends engine braking capabilities of electrical vehicles and reduces operation of friction brakes. The power generated by an electrical drive motor-generator may depend on various limits, such as a vehicle deceleration limit, traction limit, power generation limit, and power receiving limit. Specifically, the electrical power is generated at a level when at least one of these limits is reached but neither is exceeded. Furthermore, the power generation level is continuously and dynamically controlled based on changes in operating conditions.

Abstract: A control device is disclosed for a torque distributor arranged between front and rear wheels that can achieve both reduction of vibrations and noises caused by torque transmitted to rear wheels by the torque distributor and securing of turning performance and driving performance. The control device is provided with a normative yaw rate calculation section for calculating a normative yaw rate that is a target value of a yaw rate when the vehicle turns and a yaw rate deviation calculation section for calculating a yaw rate deviation that is a difference between the normative yaw rate and the actual yaw rate. When the yaw rate deviation falls below a threshold Th1, a value of a command torque is limited to a predetermined limit torque value, and when the yaw rate deviation exceeds a threshold Th2, the limit of the command torque by a limit torque value is released.

Abstract: Distant semi-autonomous systems containing their own processors and are capable of thinking for themselves, and to some extent, controlling lower functions is provided herein. These semi-autonomous systems may be referred to as “nodes”. The network is not dependent on actual protocol or network topology. The brain, one or more central multiprocessors, is only tasked with issuing simpler, higher-level commands such as “faster” or “slower”, or “execute a grabbing motion”. These commands are then interpreted and executed by the nodes.

Abstract: An apparatus and method for determining driver distraction based on a jerk and a vehicle system are provided. The apparatus includes: a jerk calculating processor to calculate a lateral jerk of a vehicle based on driving information collected when the vehicle is traveling, an exception event detecting processor to detect an exception event defining a situation where the lateral jerk occurs during normal driving based on the collected driving information, and a determining processor to detect oversteering of the vehicle by comparing the calculated lateral jerk with a reference value and determine a driver distraction based on the detected oversteering and exception event.

Abstract: A system and method of controlling engine clutch engagement during TCS operation of a hybrid vehicle are provided. The method includes determining whether a TCS is operating and upon determining that the TCS is operating, determining a compensation value for early engagement of an engine clutch during the TCS operation based on a difference between a front wheel speed and a rear wheel speed and a slip amount of front wheels. Additionally, the method includes determining whether engagement of the engine clutch is capable of being started based on the compensation value and starting the engine clutch engagement. Since the engagement of the engine clutch is controlled based on the speed of non-drive wheels during TCS operation, the engagement stability of the engine clutch is improved and the amount of time required to engage the engine clutch is decreased.

Abstract: A control device for controlling an engine based on a vehicle operating state is provided, which includes a steering angle detector for detecting a vehicle steering angle, and a processor configured to execute a basic target torque determining module for determining a basic target torque based on a vehicle operating state, a slip controller for acquiring the steering angle from the steering angle detector, detecting a slip state of wheels based on part of the vehicle operating state, and determining a torque control amount based on the slip state, a torque reduction amount determining module for acquiring the steering angle and determining a torque reduction amount based thereon, a final target torque determining module for determining a final target torque based on the basic target torque, the torque reduction amount, and the torque control amount, and an engine controlling module for controlling the engine to output the final target torque.

Abstract: A vehicle control device includes: a slip determination module that determines a slip of each of wheels; a base distribution calculation module that calculates a base distribution torque to be distributed to the front and rear wheels on the basis of requested torques and a base distribution ratio of torques between the front and rear wheels, and changes the base distribution ratio on the basis of a result of slip determination performed by the slip determination module when the slip is detected; a rotation speed control module that decreases the base distribution torque on the basis of the result of slip determination, in a manner that a rotation speed of a slipping wheel that is slipping becomes equal to a target rotation speed; and a torque vectoring module that redistributes a torque down amount of the slipping wheel to the base distribution torque of non-slipping wheels that are not slipping.

Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system, includes, a first calculation unit that converts a first deceleration threshold value to a first regenerative torque threshold value with a curb weight, a second calculation unit that converting a second deceleration threshold value to a second regenerative torque threshold value with a gross vehicle weight, a third calculation unit that calculates a third regenerative torque threshold value, and a determination unit that controls the stop lamp to be turned on when a regenerative torque value exceeds the first regenerative torque threshold value, the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value, and the stop lamp to be turned off when a given state continues.

Abstract: The present invention relates to a control system for a vehicle (100), the system comprising: control means operable to monitor an accelerator control signal of the vehicle and to control a powertrain of the vehicle to apply an amount of torque to one or more wheels (111, 112,114, 115) of the vehicle (100) corresponding to the accelerator control signal, the powertrain comprising prime mover means (121, 123); and means for determining whether the measured rate of acceleration of the vehicle and the accelerator control signal have an expected correspondence, wherein if the measured rate of acceleration and the accelerator control signal do not have the expected correspondence, the control means is operable to command a change in the amount of torque applied to the one or more wheels by the powertrain.

Abstract: A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system includes a calculation unit that converts a first deceleration threshold value for turning on a stop lamp or a second deceleration threshold value for turning off the stop lamp to a first regenerative torque threshold value for turning-on the stop lamp or a second regenerative torque threshold value for turning-off the stop lamp by calculation assumed that a weight of the vehicle is a curb weight or a gross vehicle weight, and a determination unit that performs a comparison between a regenerative torque value generated by the electric regenerative braking system and the first regenerative torque threshold value or the second regenerative torque threshold value and controls the stop lamp to be turned on or turned off based on the comparison result.

Abstract: The present invention relates to methods and apparatuses for performing driving assistance for a controlled vehicle, involving determining a first longitudinal acceleration target value on the basis of a lateral acceleration of the controlled vehicle, determining a second longitudinal acceleration target value on the basis of a target speed of the controlled vehicle, determining a third longitudinal acceleration target value based on a minimum value of the first longitudinal acceleration target value and the second longitudinal acceleration target value, and controlling a longitudinal acceleration of the controlled vehicle on the basis of the determined third longitudinal acceleration target value.

Abstract: An electric driving type utility vehicle having a regenerative brake force distribution control function, and a regenerative brake force distribution control method thereof are provided. The utility vehicle includes: a controller for controlling an output and a recovery of a motor; recovery sensing means for sensing a recovery braking state when the motor is driven; a power measurement unit for measuring the amount of recovery power generated in the recovery braking state; and a power switching unit for automatically switching a drive mode from a two-wheel drive mode to a four-wheel drive mode or vice versa according to the load condition. The present invention can switch the present mode to the four-wheel drive mode by operating the power switching unit according to the control of the controller when sensing the recovery brake through the recovery sensing means in the driving state.

Abstract: When a vehicle speed is equal to or higher than a first vehicle speed threshold value or an uphill gradient is lower than a first gradient threshold value and uphill start control is cancelled, if a state where the vehicle speed is lower than a second vehicle speed threshold value and the uphill gradient is equal to or higher than a second gradient threshold value continues for a first set time, uphill start control is executed. When the vehicle speed is decreased after being once increased within a range where the vehicle speed is lower than the first vehicle speed threshold value and uphill start control is cancelled, if a state where the vehicle speed is lower than the second vehicle speed threshold value and the uphill gradient is equal to or higher than the second gradient threshold value continues for a second set time, the uphill start control is executed.

Abstract: A front wheel differential lock control system for a straddle-ride type four-wheeled vehicle is provided that can reliably switch a differential locking mechanism into a lock state in a low vehicle-speed state. In an engine provided with a manual transmission having forward five-speed and reverse gears, only in a low gear ratio state (1st through 3rd gears) is actuation of a diff-lock actuator permitted to switch a front wheel differential mechanism into a differential lock state. When a diff-lock operation is operated on the time of selection of third-, fourth- or fifth-speed gear, engine rotation number control is exercised to allow an engine rotation number to converge on a predetermined upper limit value. In an engine provided with a start clutch or a torque converter, actuation of the diff-lock actuator is permitted only in a low engine rotation number state where drive force is not transmitted to the front wheels.

Abstract: A vehicle traction system includes a first traction wheel forming part of a first propulsion system including a mechanical drive train, a second traction wheel forming part of a second propulsion system including a hydraulic pump for powering a hydraulic motor, one sensor indicating a take-off condition, and a control unit for controlling the second propulsion unit. The control unit is programmed to automatically detect a take-off condition by the sensor and send an input to the control unit that a take-off condition is fulfilled, automatically provide a traction force from the second propulsion system in response to the indication that there is a take-off condition of the vehicle present and an indication that a traction is or will be provided by the first traction system, and automatically control the second propulsion unit by the control unit in dependence of the manually controlled torque from the first propulsion unit.

Abstract: A method for operating steerable rear wheels of a vehicle includes detecting a rear wheel steering angle of at least one of the steerable rear wheels, and detecting a first vehicular condition. The method further includes determining a weighted rear steering angle value based at least in part upon the rear wheel steering angle and the first vehicular condition, and controlling the steerable rear wheels in response to the weighted rear steering angle value.

Abstract: A driving force control device for a four-wheel-drive vehicle performs, by controlling the driving force that is allocated to the rear wheels by a front and rear torque allocation clutch that is arranged between a propeller shaft and a rear diff, the control of setting front wheels as primary drive wheels and rear wheels as auxiliary drive wheels. A control is performed to disable the allocation of driving force to the rear wheels by disengaging the front and rear torque allocation clutch, when the state that the difference in wheel speed between the left and right rear wheels is equal to or more than 80 km continues for 0.1 sec or longer in the state that the vehicle body speed is equal to or less than 120 km.

Abstract: An electric vehicle is presented. The electric vehicle may include a front motor for driving a front wheel; a rear motor for driving a rear wheel; a target torque determiner for determining a target torque of the front motor and a target torque of the rear motor, based on at least a displacement amount of an accelerator operation member operated by a driver; and a motor controller for controlling the front motor and the rear motor to cause the front motor to output the target torque and the rear motor to output the target torque.

Abstract: A driving force control apparatus includes: a turning radius estimating unit that estimates a turning radius of a four-wheel-drive vehicle; a target slip angle computing unit that computes a target slip angle at the time of turning of the four-wheel-drive vehicle, on the basis of the estimated turning radius; a target rotational speed computing unit that computes target rotational speeds of right and left rear wheels of the four-wheel-drive vehicle, on the basis of the estimated turning radius, the computed target slip angle, and a vehicle speed; and a driving force control unit that controls driving forces that are transmitted to the right and left rear wheels such that actual rotational speeds of the right and left rear wheels approach the computed target rotational speeds.

Abstract: A drive force distribution control apparatus in which if a relay output voltage (Vah) detected by relay-output-voltage detecting means (30) is lower than a first threshold, the relay is repeatedly and successively turned on and off multiple times, and then if the relay output voltage (Vah) detected later by the relay-output-voltage detecting means (30) while an engine speed (Er) is higher than a second threshold and an ignition switch (IG) is on is still lower than the first threshold, it is determined that there is an abnormality that keeps the relay stuck open, and then control for switching the drive mode from a four-wheel-drive mode to a two-wheel-drive mode is executed.

Abstract: A method for acquiring information from a driving operation of a vehicle, in which first information is acquired with respect to at least one operating state of the vehicle and additional second information is ascertained with respect to this at least one operating state using statistical methods, the first and second information concerning this at least one operating state being stored. A method for the assigning and diagnosis of at least one operating state of a vehicle, a control unit, a computer program and a computer-program product are also provided.

Abstract: A hydrostatic drive system includes an anti-slip control unit having a hydraulic pump which supplies a plurality of hydraulic motors of a plurality of axles with pressure medium. Based on a detected slip, a control device switches over between a two-wheel and a multiple-wheel drive and controls the driving torque. Optimal distribution of driving torque and traction between the axles or wheels of the drive system is set in the drive system. A method for anti-slip control of a hydrostatic drive system includes reacting to a slip situation by activating a hydraulic motor for axles or wheels which until then were not driven, or driven only with low driving torque or by increasing the driving torque of wheels which until then did not slip. The capacity of the hydraulic motor of the axles or wheels is raised to enable the activation/increase.

Abstract: A driving force distribution control apparatus for a four-wheel drive vehicle includes a theoretical value calculator, a normative value calculator, and a servo controller. The theoretical value calculator is configured to calculate a primary rotational speed theoretical value of primary drive wheels and a secondary rotational speed theoretical value of secondary drive wheels based on a steering angle, a vehicle speed, a yaw rate, and a slip angle of the four-wheel drive vehicle and configured to calculate a rotational difference normative theoretical value indicating a difference between rotational speed theoretical values of input and output shafts of a drive force distribution apparatus using the primary rotational speed theoretical value and the secondary rotational speed theoretical value.

Abstract: A vehicle behavior control apparatus is equipped with a slip angle detector that detects a slip angle of a vehicle, a control amount calculation portion that calculates a control amount from the slip angle detected by the slip angle detector, a derivative of the slip angle, and a second order derivative of the slip angle, and a control portion that executes a behavior control for the vehicle based on the calculated control amount.

Abstract: A control system (1) for a vehicle (10) with two axle drive devices (5, 12) has an engine control device (28) for controlling a first axle drive device (5) for driving a first axle of the vehicle (10) by a connected combustion engine (14) in a two-wheel drive mode and by a four-wheel drive mode. The control system (1) also has a control device (26) for controlling a second electric axle drive device (12) for driving a second axle of the vehicle in a four-wheel drive mode. The control device (26) is connected to the engine control device (28) for passing on at least one characteristic diagram to the engine control device (28).

Abstract: There is provided a vehicle drive control system that feels less unnatural and that enables an improvement in safety performance. A vehicle motion control system capable of independently controlling a driving force and a braking force of four wheels comprises: a first mode (G-Vectoring control) in which substantially the same driving force and braking force are generated with respect to left and right wheels among the four wheels based on a longitudinal acceleration/deceleration control command that is coordinated with the vehicle's lateral motion; and a second mode (sideslip prevention control) in which different driving forces and braking forces are generated with respect to the left and right wheels among the four wheels based on a target yaw moment derived from the vehicle's sideslip information, wherein the first mode is selected when the target yaw moment is equal to or less than a pre-defined threshold, and the second mode is selected when the target yaw moment is greater than the threshold (FIG. 11).

Abstract: A method for ascertaining a wheel reference speed of a wheel of a vehicle having a hydrostatic drive which uses a transfer medium, the hydrostatic drive acting at least on the one wheel, and the hydrostatic drive having an oscillating motor which may be swiveled to a pumping mode via which a torque may be applied to the wheel, and a wheel speed sensor for detecting the particular wheel speed being situated near the wheel, and the oscillating motor being appropriately adjusted while the wheel speed sensor ascertains the wheel reference speed in order to allow resistance-free flow of the transfer medium through the oscillating motor. The exemplary embodiments and/or exemplary methods of the present invention further relates to a device having arrangements for carrying out the method, and configured as a hydraulic drive control unit, for example.

Abstract: A control device for controlling a front wheel drive force and a rear wheel drive force of a vehicle that includes a transmission comprises: a first controller for controlling a drive force of a main drive wheel and a drive force of an auxiliary drive wheel, the drive force of the main drive wheel being one of the front-wheel drive force and the rear-wheel drive force, and the drive force of the auxiliary drive wheel being another of the front-wheel drive force and the rear-wheel drive force; and a second controller for detecting whether a speed-change ratio of the transmission has changed. In a case that the second controller has detected that the speed-change ratio has changed, the first controller increases the drive force of the auxiliary drive wheel and reduces the drive force of the main drive wheel.

Abstract: A vehicle has at least two drive wheels which can be driven in each case by single-wheel drive units which are in particular of structurally identical dimensions and which can be actuated by means of a control device, control device determines a target torque which, in a torque distribution unit, can be divided into a first target torque for the first drive unit and a second target torque for the second drive unit. The torque distribution unit is assigned an adjustment unit by means of which the first and/or the second target torque can be corrected with an adjustment factor which can be determined as a function of a torque difference, arising owing to manufacturing and/or component tolerances, between the drive units.

Abstract: A vehicle driveline includes a power source, a transmission connected to the power source and including an output driveably connected to primary road wheels, a driveshaft, a synchronizer that opens and closes a drive connection between the output and the driveshaft, and a clutch that alternately opens and closes a drive connection between the driveshaft and secondary road wheels. A control executes synchronization and connection strategies using one of singular, overlapping and sequential activation of the driveline components that produce all-wheel-drive on-demand.

Abstract: Embodiments of the invention are directed toward a geared traction drive system configured to drive a wheel of a vehicle, comprising: a driveshaft for transmitting power to the wheel; an electric drive motor for driving the driveshaft, the electric drive motor configured to receive signals from a vehicle dynamic control system to command a required speed; a gear reduction component for reducing the speed of the motor by a predetermined factor to a lower speed suitable for driving the wheel; and a drive electronics component that works with the electric drive motor to drive the wheel to the speed commanded by the vehicle dynamic control system.

Abstract: A vehicle driving system includes a slip detector that detects an occurrence of excess slipping; an additive/subtractive slip point calculator that time-discretely calculates an additive/subtractive slip point, which is an additive slip point or a subtractive slip point, on the basis detection or non-detection of an occurrence of excess slipping; a cumulative slip point calculator that sequentially calculates a cumulative slip point that is a cumulative sum of values of the additive/subtractive slip point; and a driving mode switcher that switches between a two-wheel driving mode and an all-wheel driving mode on the basis of the cumulative slip point. When excess slipping is detected, the additive/subtractive slip point calculator calculates the additive slip point on the basis of a driving force correlation value that correlates to a driving force a driving wheel for which the excess slipping has occurred.

Abstract: A two wheeled vehicle with a first wheel and a second wheel includes a first electrical motor operable to drivingly rotate the first wheel and a second electrical motor operable to drivingly rotate the second wheel. The vehicle also includes a controller operable to independently control the first and second electrical motors to drive rotation of the first and second wheels independent of each other.

Abstract: A vehicle steering feel improving apparatus is provided for a vehicle, wherein the vehicle is capable of running with a road wheel driven by a driving force from a power source. The vehicle steering feel improving apparatus includes a steering operation detecting means that detects a condition that steering operation is being performed to steer a steerable wheel of the vehicle. A driving force fluctuating means repeatedly fluctuates the driving force to the road wheel, while the steering operation detecting means is detecting the condition that steering operation is being performed.

Abstract: A torque distribution control apparatus for a four-wheel drive vehicle includes a vehicle-speed detector configured to detect a vehicle speed of the vehicle. A wheel-speed detector is configured to detect wheel speeds of main driving wheels and sub-driving wheels of the vehicle. A sub-driving-wheel distribution-torque calculator is configured to calculate a sub-driving-wheel distribution torque in accordance with a rotation speed difference between the main driving wheels and the sub-driving wheels calculated based on an output from the wheel-speed detector. A torque limiter is configured to limit an upper limit of the sub-driving-wheel distribution torque. A controller is configured to control the sub-driving-wheel distribution torque to be transmitted to the right and left sub-driving wheels by right and left torque distribution clutches in accordance with a driving state of the vehicle.

Abstract: A display system for an agricultural vehicle includes a display for displaying a representation of the vehicle's location in a field in which the vehicle is operating and a control device for receiving an indication of an operating state of the vehicle and for controlling a viewing mode of the display according to the operating state.

Abstract: A method for controlling a backing vehicle includes if a back-up sensor indicates that an obstacle is present behind the vehicle and a gear selector is moved to a reverse position, delaying reverse gear engagement and producing a warning signal, and producing a transmission tie-up if brakes are applied insufficiently to stop the vehicle.

Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.

Abstract: According to one aspect, a vehicle control system. The control system includes a steering control coupled to at least one steerable wheel, the steering control having a first position, a second position and a plurality of positions therebetween. The control system also includes a steering sensor coupled to the steering control and configured to generate steering sensor signals based upon the position of the steering control. The control system also includes a control module coupled to the steering sensor, the control module configured to (i) record a first steering sensor signal value when the steering control is in the first position; (ii) record a second steering sensor signal value when the steering control is in the second position; and (iii) determine a current position of the steering control by comparing the first and second steering sensor signal values with a current steering sensor signal value.

Abstract: A system and a method are provided for controlling a foundation brake of a vehicle having at least one foundation brake device, wherein the usability of the foundation brake is limited to a predetermined total application-time of the foundation brake within a predetermined time interval.

Abstract: A vehicle driveline comprising a primary drive system including at least one primary drive wheel and an auxiliary drive system including at least one auxiliary drive wheel is disclosed. The vehicle driveline may further comprise a system for idling the auxiliary drive system. The system may include at least one wheel disconnect device for selectively connecting and disconnecting the auxiliary drive wheel from the auxiliary drive system and a power transfer unit for selectively engaging and disengaging the auxiliary drive system from the primary drive system. The power transfer unit may include a multi-plate clutch in series with a dog clutch.

Abstract: The construction vehicle is provided with an engine, a clutch, a travel device, a work equipment, a drive force setting dial, and a controller that includes: a theoretical value determination unit that determines a theoretical value, for the degree of engagement to make the upper limit value of the drive force equal to a set drive force; an operational state determination unit that determines whether the work equipment is outputting the drive force in a predetermined travel direction; a drive force determination unit that determines whether the drive force is greater than the set drive force; and a degree of engagement reduction unit that, if of operational state determination and of drive force determination are both affirmative, causes the degree of engagement to approach the theoretical value.

Abstract: A method for controlling torque in a vehicle including monitoring a plurality of factors associated with an output torque request in response to an output torque request rate of change exceeding a predetermined threshold, and controlling rate limiting of a delivered output torque to achieve the output torque request rate of change based on the plurality of factors associated with the output torque request.

Abstract: An engine driving force is calculated. A first-lag process is executed based upon the engine driving force to calculate an engaging torque between front and rear shafts. The resultant is output to a transfer clutch drive unit. A braking force according to a change of a driving force, which is decreased with the lapse of time based upon a temporal change of the engine driving force, is calculated by executing a first-order lead process. An acceleration sensitive target yaw moment based upon the braking force according to the change of the driving force is calculated, and a steering sensitive target yaw moment based upon a steering angle velocity is calculated by executing the first-order lead process. A braking force to be added to an inner wheel on a turn is calculated based upon these target yaw moment. The resultant is output to a brake drive unit.