Volvo Truck Corporation

Martin Wilhelmsson

Oscar Stjernberg

Dan Stenqvist

Mattias Johansson

Irman Svraka

Anders Eriksson

Fredrik Rahm

Johan Bjernetun

Mats Rydström

Tove Audhav

Johan Dahl

Fredrik Blomgren

Linus Nordholm

John Korsgren

Martin Strängberg

Carl Fredrik Mannerfelt

Per-Johan Carlsson

Eva Skvor

A computer system and a method for controlling a power system of a vehicle is disclosed. The power system includes a fuel cell system and an energy storage system comprising one or more batteries. The method includes predicting an upcoming driving event associated with a start time and a time duration, the driving event being an event during which the vehicle is expected to be operated under a load condition. The method further includes determining a preferred operating condition of the fuel cell system during the predicted upcoming driving event based on the load condition and on the time duration, and controlling the power system by performing a preparation action associated with the power system in dependence of the determined operating condition of the fuel system before the start time of the predicted upcoming driving event.

Computer-implemented method for controlling a power system of a vehicle

A system for handling surplus methane in a fuel supply system for an internal combustion engine (ICE) system, the system comprising: an inert gas supply system configured to be in fluid communication with the fuel supply system and further configured to supply inert gas to an inert gas supply conduit position of the fuel supply system; a burner configured to be in fluid communication with the fuel supply system via a controllable valve device, the controllable valve device being disposed downstream the fuel supply conduit position; and a controller comprising processing circuitry configured to: predict an upcoming ICE non-operational time period; in response to the predicted ICE non-operational time period, determine to inject inert gas to the inert gas supply conduit position so as to flush the fuel supply system; and control the controllable valve device to direct any flushed-out methane to the burner.

System and method for controlling a fuel supply system

A computer implemented method controls vehicle operation. The vehicle has vehicle components operable by processing circuitry based on predicted user behavior. The method includes receiving, by the processing circuitry, a signal indicative of a current user behavior for a user currently operating the vehicle; comparing, by the processing circuitry, the current user behavior with a predicted user behavior. When a difference between the current user behavior and the predicted user behavior is above a predetermined threshold limit: new user behavior based on the current user behavior is formed and operation of at least one of the vehicle components is controlled using the new user behavior.

Method of controlling a vehicle operation

A heavy-duty vehicle has a first set of metallic brakes and a second set of non-metallic brakes having lower weight than the metallic brakes. A processor device is configured to acquire prediction data indicative of an upcoming brake event that is expected to occur along a road on which the vehicle is travelling; determine, based on the prediction data, an expected value of kinetic energy that will be absorbed during said upcoming brake event; select, based on said determined expected value of kinetic energy, which one of the first and second sets of brakes that is to be activated to absorb kinetic energy during said upcoming brake event; and control the selected set of brakes to be activated during said brake event, wherein the other set of brakes remains inactivated during said brake event.

Heavy-duty vehicle

A method of operating a reducing agent injector includes determining a reference level of toxic substances exhausted from a catalytic reduction arrangement when injecting reducing agent at the pre-set mass flow rate; controlling a reducing agent injector to inject reducing agent at a first mass flow rate, the first mass flow rate being different from the pre-set mass flow rate; determining a first level of toxic substances exhausted from the catalytic reduction arrangement after injecting reducing agent at the first mass flow rate; determining which one of the reference level of toxic substances and the first level of toxic substances being a lowest level of toxic substances; updating the pre-set mass flow rate of the predefined injection model to an updated pre-set mass flow rate as the mass flow rate causing the catalytic reduction arrangement to exhaust the lowest level of toxic substances; and controlling the reducing agent injector to inject reducing agent at the updated pre-set mass flow rate.

Method of operating a reducing agent injector

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.

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

A computer-implemented method for controlling a regeneration event for an exhaust aftertreatment system of a vehicle is described. The method comprises predicting, by a processor device, expected travelling times for travelling from a starting point to a first destination point and from an auxiliary point to a second destination point based on collected drive time statistical data and collected additional drive time statistical data; and controlling, by the processor device, the regeneration event based on the predicted expected travelling times.

Computer-implemented method for controlling a regeneration event

A method performed by a control unit in connection with a pre-heating process of an aftertreatment system for a combustion engine is provided. The control unit obtains a scheduled start time of the combustion engine. The control unit schedules a pre-heating of the aftertreatment system to be completed before the scheduled start time. The control unit detects a start of the combustion engine at an actual start time. In response to the detected start of the combustion engine, and using the actual and scheduled start times, the control unit determines whether the scheduled pre-heating of the aftertreatment system fulfils one or more success criteria. When the one or more success criteria are fulfilled, the control unit triggers a performance increase of the combustion engine.

Device and method in connection with a pre-heating process of an aftertreatment system

An exhaust aftertreatment system, EATS, for converting NOx emissions in exhaust gases from an engine. The EATS includes a fluid channel for providing a fluid pathway for the exhaust gases; a selective catalytic reduction, SCR, catalyst arranged in the fluid channel, the SCR catalyst being configured to store ammonia; an injector configured to inject a reductant for providing ammonia to the SCR catalyst, the injector being arranged upstream of the SCR catalyst; a fluid flow inducer configured to cause an induced fluid flow in at least a part of the fluid channel when the engine is turned off; and a controlling apparatus configured to precondition the EATS prior to engine start by injecting the reductant into the fluid channel, and transport the reductant into the SCR catalyst by the induced fluid flow to store ammonia in the SCR catalyst.

EATS for converting NOx emissions in exhaust gases from an engine

A method for preconditioning at least a part of an engine system of a vehicle. The engine system includes an engine and an exhaust aftertreatment system, EATS. The method providing predicted vehicle operational information comprising a vehicle operational initialization time and predicted engine operation, determining whether or not cold-start emissions of the predicted engine operation achieves a threshold criterium, in response to achieving the threshold criterium, preconditioning at least a part of the engine system such that at least said part of the engine system is preconditioned at a time of the vehicle operational initialization time.

Method for preconditioning at least a part of an engine system of a vehicle

A method for controlling the operation of an engine system in a vehicle upon engine start. The engine system includes an engine and an exhaust aftertreatment system having a selective catalyst reduction, SCR, catalyst and a reductant dosing system for providing a reductant to the SCR catalyst. The method comprises: determining the temperature of the SCR catalyst; in response of determining that the temperature of the SCR catalyst is above a predetermined threshold, initiating pressurising of the reductant dosing system towards a predefined operating pressure; performing a preventive action for delaying engine start until the operating pressure of the reductant dosing system is reached.

Method for controlling the operation of an engine system in a vehicle upon engine start

A method for controlling oil pressure in a controllable oil pump of an internal combustion engine system. A vehicle is arranged in communication with a control unit, the method comprising: receiving an indication of an upcoming vehicle operating situation affecting an operation of the ICE system; determining an expected change in the operation of the ICE system for the upcoming vehicle operating situation; determining a current oil pressure of the oil pump; and on the basis of said determined expected change in the operation of the ICE system and the determined current oil pressure of the oil pump, determining a minimum oil pressure for the oil pump for the upcoming vehicle operating situation.

Method for controlling oil pressure in an oil pump of an internal combustion engine system

A method for NOx emission control during start of a vehicle comprising an exhaust aftertreatment system, an engine, and a NOx sensor is provided. The method includes determining a temperature of the NOx sensor; if the determined temperature of the NOx sensor is below a predetermined threshold, initiating heating of the NOx sensor, and performing a preventive action for delaying engine start until a determined temperature of the NOx sensor exceeds or is equal to the predetermined threshold.

Controlling NOx emission control during start of a vehicle

A method for detecting a replacement of a differential pressure sensor arranged for measuring a differential pressure across a filter of an aftertreatment system of a vehicle. The method includes determining a sensor offset value being an offset from a sensor value measured with a differential pressure sensor; adding an adaption value to the measured sensor value to compensate for the offset value to centre the sensor value around a predetermined level; if a sum of a subsequently measured sensor value and the adaption value exceeds a limit value, concluding that the differential pressure sensor has been replaced.

Detection of differential pressure sensor replacement

A method for reducing deposits related to a reduction agent (RA) in a portion of an exhaust aftertreatment system (EAS) of an internal combustion engine (ICE) and comprising an injector for injecting the RA into said EAS, said portion located downstream of said injector, as seen in an intended direction of flow of exhaust gas in said EAS, said method comprising:

Growing community of inventors

Gothenburg, Sweden

Martin Wilhelmsson