A system and method are provided for disabling a retarder during a gearshift at low speeds for improved driver comfort. These embodiments recognize that power flow is interrupted during a shifting process and use that opportunity to disable the retarder at low speeds, thereby eliminating an additional, uncomfortable jolt to the driver. Several embodiments are provided.

A method of controlling a vehicle during a braking operation includes providing a first and a second brake actuator, a brake input device, a steer input device, and a cross-drive transmission having two outputs and a controller. The method includes detecting a first output speed at the first output and a second output speed at the second output, and receiving a brake input request and a steer input request. The method also includes determining a differential output speed based on the first output speed and the second output speed, and comparing the differential output speed to a first threshold, the brake input request to a second threshold, and the steer input request to a third threshold. The method includes determining the first or the second output is locked during the braking operation, and controlling the first or the second brake actuator based on which output is determined to be locked.

A system for use in connection with a wheel torque generating component in a heavy-duty vehicle. The system comprises a fluid conduit, a compressor configured to provide a pressurized air flow through the fluid conduit, a mass flow adding arrangement configured to add a fluid to the pressurized air flow in the fluid conduit, thereby increasing the mass flow of the pressurized air flow, and a flow directing device arranged downstream of the mass flow adding arrangement and configured to direct the pressurized air flow, including the added fluid, from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component. The invention also relates to a method for use in connection with a wheel torque generating component in a heavy-duty vehicle.

A braking control arrangement is for a braking system of a vehicle. The braking system comprises an anti-lock braking system, ABS, and an electronic stability control, ESC. The braking control arrangement comprises a module that is arranged to operate with the anti-lock braking system and the electric stability control. The arrangement is also arranged to drive a gear arrangement of the vehicle in such a way that when braking the vehicle, the anti-lock braking system works, and a slippery road is detected, the gear arrangement of the vehicle is driven to shift a reverse gear.

An outdoor grounds maintenance vehicle is self-propelled by a hydrostatic traction drive system that provides dynamic braking to the vehicle without the need for separate service brakes acting on the wheels of the vehicle. An engine kill device can be manually actuated by the operator to access the dynamic braking of the traction drive system by reducing the speed of the prime mover that powers the pump of the traction drive system. This provides an auxiliary braking system that can be used in an emergency or on demand by the operator in the event the accelerator pedal does not properly control the pump swashplates. The operator can control the rate at which the auxiliary brake system reduces the speed of the prime mover to zero.

A braking method includes: obtaining a first state information of the vehicle, which includes a vehicle mass and a deceleration required by braking; calculating a braking torque according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque; obtaining a current vehicle speed and a mechanical braking application delay time; calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking; calculating a mechanical braking application speed according to the mechanical braking application delay time, the deceleration required by braking, and the electric braking exit speed; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the electric braking exit speed, and the mechanical braking application speed.

A system and method are provided for disabling a retarder during a gearshift at low speeds for improved driver comfort. These embodiments recognize that power flow is interrupted during a shifting process and use that opportunity to disable the retarder at low speeds, thereby eliminating an additional, uncomfortable jolt to the driver. Several embodiments are provided.

The present disclosure relates to a resource allocation procedure for allocating time-frequency radio resources by a scheduler in a mobile communication system. A plurality of numerology schemes are defined, each partitioning a plurality of radio resources of the mobile communication system into resource scheduling units in a different manner. A reference resource set is defined per numerology scheme, each being associated to a set of radio resources usable for being allocated according to the respective numerology scheme. The reference resource set of at least one numerology scheme overlaps with the reference resource set of at least another numerology scheme in the frequency and/or time domain. The resource allocation procedure is performed for allocating radio resources to one or more user terminals according to the numerology schemes. The resource allocation procedure is performed for each numerology scheme based on a scheduling time interval defined for the respective numerology scheme.

An electric vehicle, and braking system and a method of operating the electric vehicle. The braking system includes a mechanical braking system, a regenerative braking system, and a controller. The controller is configured to calculate a total braking torque for operating the electric vehicle at a selected velocity during braking, determine an available regenerative braking torque via the regenerative braking system, calculate a mechanical brake torque for the mechanical braking system from the total braking torque and the available regenerative brake torque, and apply the mechanical brake torque at the mechanical braking system.

A system for regulating speed of a vehicle along a road surface, the system including: at least one controller; at least one throttle sensor in communication with the at least one controller; at least one brake sensor in communication with the at least one controller; at least one gear sensor in communication with the at least one controller; at least one speed sensor in communication with the at least one controller; at least one motor in communication with the at least one controller; and at least one energy source in communication with the at least one controller and the at least one motor; wherein the at least one controller further includes a proportional integral and derivative controller; and at least one retardive braking system in communication with the at least one controller and controlled by the proportional integral and derivative controller.