Volvo Truck Corporation

Volvo Lastvagnar Ab

Ab Volvo

Volvo Technology Corporation

Ford Global Technolgoies, LLC

Mack Trucks, Inc.

Volvo Tekisk Utveckling Ab

Volvo Car Corporation

Arne Andersson

Lennart Andersson

Staffan Lundgren

Bengt Johansson

Tove Audhav

Nhut Lam

Fredrik Rahm

Bincheng Jiang

Mats Fagergren

Peter Mårdberg Jozsa

Jan Eismark

Bo Karl Svensson

Magnus Ising

Ingemar Magnusson

Anders Hoglund

Staffan Johansson

Peter Mårdberg

Albert Serra Dalmau

Edward Jobson

Mikael Larsson

John Gibble

Lennart Cider

Pranav Arya

Sassan Etemad

Daniel Grunditz

Bengt Lassesson

Niklas Enander

Peter Tennevall

Vijai Shankar Bhavani Shankar

David Carlson

Filip Acke

Martin Lunden

Jan Christian Holmstr&ouml;m

Peter Jozsa

Gisela Blomkvist

Håkan Sandström

Peter Josza

Peter MÅRDBERG

A vehicle arrangement for braking comprising at least a first electric motor comprising a first shaft being arranged to be mechanically connected to a drive shaft of the vehicle via a gearbox, and a braking compressor comprising a compressor shaft being arranged to be mechanically connected to the first shaft of the first electric motor via a compressor clutch, such that the first shaft drives the compressor shaft, wherein the first shaft is connected to the gearbox via a first motor clutch and a first gearbox shaft, the arrangement further comprising a mass flow rate controller arranged for controlling the air mass flow rate through the compressor. A method for controlling a vehicle arrangement, a method for braking a shaft of an electric motor, a control unit, a vehicle, a computer program and a computer readable medium.

Vehicle arrangement and method for braking

A method of noise management in an electric heavy vehicle, including determining a noise threshold and corresponding reduced target speed for a cooling fan providing cooling of a propulsion/braking system of the vehicle, obtaining look-ahead data pertinent to an upcoming section of a road, and to determine a speed profile for the vehicle such that a cooling requirement of the propulsion/braking system does not exceed a cooling capacity of the cooling fan running at the reduced target speed. The method further includes, while driving along the section of the road, controlling the cooling fan not to exceed the target speed, and controlling the speed of the vehicle in accordance with the speed profile. A corresponding control system, heavy vehicle, computer program and computer program product are also provided.

Noise management in electric heavy vehicles

An air cooled resistor arrangement comprising a first elongated tube member forming a first air flow channel and a second elongated tube member forming a second air flow channel, wherein the first elongated tube member is at least partly housed inside the second elongated tube member. The air-cooled resistor arrangement further comprises an air dilution portion comprising at least one opening at which the first air flow channel is arranged in fluid communication with the second air flow channel.

Air-cooled resistor arrangement

An air cooled resistor arrangement comprising a first elongated tube member which is housed inside a second elongated tube member. The first and second elongated tube members are spaced apart from each other by an air gap for allowing a flow of air to flow through the first elongated tube member and the air gap.

Air cooled resistor

A cooling system includes a fluid circuit and a cooler arranged in fluid communication with said fluid circuit. The cooler regulates the temperature of said coolant. The fluid circuit comprises a first coolant fluid branch for circulating coolant to regulate a temperature of a low temperature component and a second coolant fluid branch for circulating coolant to regulate a temperature of a high temperature component. A first pump unit is arranged in said first coolant fluid branch. A coolant temperature control system is disposed in said first coolant fluid branch and regulates a temperature of the coolant to the low temperature component on the basis of a temperature difference between a coolant temperature upstream the coolant temperature control system and a temperature required at an inlet of the low temperature component. A second pump unit is arranged in said second coolant fluid branch, and directs coolant to said high temperature component; wherein the second coolant fluid branch intersects with the first coolant fluid branch at a fluid circuit position downstream the low temperature component.

Cooling system for a vehicle

A system for use in connection with a wheel torque generating component in a heavy-duty vehicle, comprising a fluid conduit, a flow creating device configured to provide a pressurized air flow through the fluid conduit, a flow directing device enabling the pressurized air flow to be directed from the fluid conduit to the wheel torque generating component so as to control the temperature of the wheel torque generating component, and a control unit configured to compare a determined first temperature of the pressurized air flow with a determined second temperature of the wheel torque generating component, wherein the control unit is configured to, based on the comparison of the first temperature and the second temperature, selectively control the flow directing device to direct the pressurized air flow to the wheel torque generating component. The invention also relates to a method.

System and method for use in connection with a wheel torque generating component in a heavy-duty vehicle

A method performed by a control unit comprised in a vehicle for controlling a distribution of service brake activation between a first vehicle unit and a second vehicle unit of the vehicle is provided. The control unit determines a first periodic brake adjustment and a second periodic brake adjustment to be applied to an electric propulsion system and a service brake system of the vehicle. The control unit determines the first and second periodic brake adjustment, respectively, to adjust a retardation of the vehicle by less than a retardation threshold. The control unit applies the first periodic brake adjustment to the electric propulsion system of the vehicle and applies the second periodic brake adjustment to the service brake system of the vehicle. Applying the first periodic brake adjustment comprises periodically adjusting a charging power of the electric propulsion system of the vehicle. Applying the second periodic brake adjustment comprises periodically adjusting a brake pressure applied to the service brake system of the vehicle. Periodically adjusting the brake pressure applied to the service brake system triggers the service brake system to periodically activate one or more second service brakes of the second vehicle unit of the vehicle.

Method, vehicle and control unit for controlling brake distribution of service brakes

A cooling system for a vehicle propelled by an electric machine. The cooling system is arranged, when the vehicle is operated in a braking mode, to control a first and a second radiator valve to direct a flow of fluid from a radiator through a first fluid circuit and prevent the flow of fluid from the radiator to enter the second fluid circuit, control a compressor arrangement to flow a refrigerant in a direction from a heat exchanger to a condenser of a third fluid conduit, and control a second circuit valve arrangement to direct a heat source fluid to circulate through a heat exchanger and an electric heat source.

Cooling system, and a method of controlling a cooling system

There is provided a truck, comprising a cab and a plurality of storage tanks secured behind the rear of the cab, wherein the storage tanks are configured to contain hydrogen gas. An energy conversion system is configured to receive hydrogen gas from the storage tanks and to convert the chemical energy of the hydrogen into mechanical or electric energy. A cooling arrangement is configured to cool the energy conversion system. A wall is provided behind the cab and laterally of the storage tanks, the wall having its main extension in a vertical plane, wherein said wall houses at least a part of said cooling arrangement.

Truck with rear walls for hydrogen storage

The present invention relates to a method for controlling an internal combustion engine arrangement (). The internal combustion engine arrangement () comprises a combustion cylinder () and an inlet valve () arranged to be positioned in a closed position at a distance before a piston () reaches a bottom dead center during normal operation. The inlet valve is further controllable to be arranged in the open position until the piston reaches the bottom dead center if a required volumetric efficiency of the combustion cylinder is higher than a volumetric efficiency during normal operation.

Method for controlling an internal combustion engine arrangement

The present invention relates to a method for controlling lubrication of a connecting rod bearing of an internal combustion engine arrangement. The method comprises the steps of controlling an inlet valve to be maintained in the closed position during a movement of the reciprocating piston from the top dead center during an intake stroke for a predetermined number of crank angle degrees; and positioning the inlet valve in the open position when the reciprocating piston has traveled the predetermined number of crank angle degrees from the top dead center, wherein lubricating medium is provided to the connecting rod bearing within a predetermined time period before the inlet valve is arranged in the open position.

Method for controlling lubrication of a connecting rod bearing

Internal combustion engine and a vehicle

A combined cooling and water braking system for a vehicle comprises a first water recirculation loop having a first heat exchanger configured to cool water flowing in the first water recirculation loop, the first water recirculation loop comprising a water conduit for transporting heat away from a propulsion device configured to generate a propulsion power for the vehicle. A second water recirculation loop having a second heat exchanger is configured to cool water flowing in the second water recirculation loop. A retarder is configured to be coupled to a pair of wheels of the vehicle. The second water recirculation loop may be selectively used for cooling the propulsion device and for providing water to the retarder for water braking. There is also provided a method for cooling a propulsion device of a vehicle and water braking a pair of wheels of a vehicle.

Combined cooling and water braking system for a vehicle, and a method for cooling a propulsion device of a vehicle and water braking a pair of wheels of a vehicle

An internal combustion engine system includes a reciprocating compressor for pressurizing a fluid medium and having a compressor cylinder for accommodating a compressor piston. The compressor cylinder has a main cylinder volume and a secondary adjustable volume in fluid communication with the main cylinder volume so as to provide a variable geometrical compression ratio.

Internal combustion engine system

An internal combustion engine system, includes a two-stroke piston machine having a cylinder for accommodating a reciprocating piston, and further at least one valve for regulating a flow of fluid medium; the ICE system further comprising a rotatable crankshaft for operating the reciprocating piston. The rotatable crankshaft comprises an integrated cam lobe arranged to operate the at least one valve of the two-stroke piston machine.

Growing community of inventors

Mölnlycke, Sweden

Arne Andersson