Volvo Truck Corporation

Volvo Lastvagnar Ab

Mattias Åsbogård

Leo Laine

Leon Henderson

Adithya Arikere

Ray Sidhant

Jonas Jerrelind

Erik Lauri

Johan Lindberg

Sidhant Ray

Mikael Askerdal

Krister Fredriksson

Mattias Andreasson

Johan Bringhed

Maud Tribaudeau

Niclas Wennberg

Charul Sampath

A method for controlling a vehicle brake system of a heavy duty vehicle, the brake system comprising a service brake system and an electrical machine brake system. The method includes determining a total brake torque request for braking a wheel of the vehicle, obtaining a brake torque capability of the electrical machine, determining if the total brake torque request exceeds the brake torque capability of the electrical machine, and if the total brake torque request exceeds the brake torque capability of the electrical machine but is below a threshold level, applying a baseline brake torque by the service brake system, wherein the baseline brake torque is configured to compensate for a difference between total brake torque request and brake torque capability of the electrical machine, and controlling wheel slip by the electrical machine brake system.

Method for controlling a vehicle brake system

A method for setting a heavy duty vehicle in motion. The method includes obtaining a motion instruction for setting the vehicle in motion, determining a target wheel slip value corresponding to a wheel slip suitable for executing to the motion instruction, and controlling wheel speed to maintain wheel slip of the vehicle at the target wheel slip value.

Methods for setting a heavy duty vehicle in motion

The present disclosure relates to a vehicle motion management system as well as a motion support system for a vehicle. The vehicle motion management system and the motion support system are arranged to control operation of at least one actuator configured to apply a torque to at least one wheel of the vehicle. The vehicle motion management system is configured to transmit a control signal indicative of a desired torque and a wheel speed limit to the motion support system, whereby the motion support system is, based on the received signal, configured to transmit an actuator signal to the actuator for the actuator to generate an operating torque on the at least one wheel without exceeding an actuator rotational speed limit.

Vehicle motion management system and a motion support system for a vehicle

A control unit () for controlling a heavy duty vehicle (),

Wheel slip based vehicle motion management for heavy duty vehicles

The present disclosure relates to a method for controlling at least one actuator of a vehicle, the actuator being configured to apply a torque on at least one wheel of the vehicle, wherein the applied torque is determined by a control function associated with a control bandwidth, the method comprising configuring the control function to control the applied torque to reduce a difference between a first parameter value related to a current rotational speed of the wheel and a second parameter value related to target rotational speed of the wheel; obtaining data indicative of a current operating condition of the vehicle; setting the control bandwidth of the control function in dependence of the current operating condition of the vehicle; and controlling the actuator using the control function.

Method for controlling an actuator of a vehicle

The invention relates to a method and arrangement for determining a current road inclination, specifically taking into account a quality measure for the determination. The invention also relates to a corresponding computer program product. The method comprises the steps of: &#x2014;measuring (S), a first vehicle operating parameter; &#x2014;receiving (S) the first vehicle operating parameter; &#x2014;determining (S) an indication of a quality level for the first vehicle operating parameter, and &#x2014;determining (S) an estimated value of the current road inclination based on the first vehicle operating parameter and the indication of the quality level for the first vehicle operating parameter.

Method and arrangement for determining road inclination

The invention relates to a drive arrangement for a vehicle and a method for gear shifting in a vehicle. The drive arrangement () comprises at least a first drive axle () operatively connected to a first gear box () and a first propulsion unit (). The drive arrangement () further comprises a second gear box () and a second propulsion unit () operatively connected to the first drive axle () or to an optional second drive axle (). The drive arrangement () further comprises at least one electronic control unit (ECU) adapted to govern gear transmission of the first and the second gear boxes (). The electronic control unit (ECU) is configured to automatically select between shifting gear on the first and the second gear boxes () simultaneously, or sequentially. The drive arrangement and the method provides for a very versatile drive arrangement and gear synchronization providing comfort for the driver and the passengers as well as improved vehicle dynamics.

Device and a method for gear shift coordination

A vehicle system controller is configured to determine a current buffer ratio for a first energy buffer based on a current buffer energy level for the first energy buffer and a predetermined buffer range for the first energy buffer, and determine if the current buffer ratio for the first energy buffer should be increased using energy provided by a power converter, the determination being based on the current buffer ratio for the first energy buffer and a cost for generating energy from energy stored in a second energy buffer using the power converter.

Vehicle comprising a vehicle system controller for controlling energy flows within the vehicle

An arrangement for estimating the input torque of a dual-clutch transmission for a vehicle is provided. The transmission includes an inner input shaft and an outer input shaft arranged concentrically with respect to the inner input shaft. The arrangement further includes a dual-clutch assembly connecting the shafts to an output shaft of an engine. A torque sensor is arranged on the outer input shaft and connected to a transmission control unit. By torque sensor, a measured torque value is provided during operation of the outer input shaft and for providing an estimated torque value during operation of the inner input shaft.

Arrangement and method for estimating the input torque of a dual-clutch transmission

An energy management system (EMS) controls the energy flows in a vehicle by adapting pricing rules. In the EMS the price (Pm, P, PB) of the energy is variable dependent of the momentary supply of energy in a global energy system, i.e. the vehicle. Each auxiliary system (GEN, B, C) in the global energy system has in individual price limit, above which the auxiliary system (GEN, B, C) won't purchase any more energy. Some auxiliary systems (B) have variable price limits depending of those auxiliary systems parameters. The auxiliary systems (GEN, B, C) are represented in the EMS by activation agents (CA, CA, CAn, BA, BAn), which have different behavior depending of what kind of auxiliary system they represent. Said activation agents (CA, CA, CAn, BA, BAn) control the energy flows in the global energy system. In the EMS the energy systems are divided into two categories; energy main system and energy auxiliary systems.

Growing community of inventors

Mölnlycke, Sweden

Mattias Åsbogård