Scania Cv Ab

Joakim Sommansson

Erik Höckerdal

Hans Göransson

Markus Olofsson

Sebastian Zamani

Mats Ekman

Jens Gustavsson

Kurt Källkvist

Fredrik Strååt

Lars-Göran Kjellström

Erik Ersvik

Emanuel Remmo

Oscar Hällman

Markos Saleeb

A method for discharging a capacitor. An active discharge circuit is connected in parallel with the capacitor. An interface provides a signal connection between a message-based communication system and the active discharge circuit. The interface comprises at least one input for receiving messages from the message-based communication system. The interface comprises a wake-up functionality. The at least one input comprises an input for the wake-up functionality. The method comprises: receiving at the input for the wake-up functionality a disable discharge command message of said messages for the disabling of the discharge of the capacitor, wherein upon cessation of the disable discharge command message the discharge of the capacitor is enabled. An apparatus for the discharge of a capacitor, wherein the apparatus comprises the interface and the active discharge circuit connectable in parallel with the capacitor.

Apparatus and a method for discharging a capacitor

A control device and method for controlling a compression release brake arrangement is provided. The compression release brake arrangement comprises an exhaust valve actuator assembly, a first actuator valve and a second actuator valve. The method comprises controlling the first and second actuator valves to a first state in which one of the actuator valves is open and the other one is closed. The disclosure further relates to a computer program, a computer readable medium, as well as to a vehicle comprising the control device.

Control device and method for controlling a compression release brake arrangement for an engine

The invention relates to a method, system, and computer program product for diagnosing an exhaust gas processing configuration for a combustion engine of a vehicle, said configuration comprising two SCR-units, two NOx-sensors and two reducing agent dosing units suitably arranged, comprising the steps of: performing a series of reducing agent dosing operations by a first reducing agent dosing unit; comparing measured NOx-contents measured by a first NOx-sensor and a second NOx-sensor related to said operations; and if the respective NOx-content measured by the respective NOx-sensors during the performed reducing agent dosing operations are substantially equal, determining that the respective NOx-sensors provide a proper performance.

System and a method for diagnosing the performance of two NOX sensors in an exhaust gas processing configuration comprising two SCR units

Disclosed is a method for adapting control of a reducing agent dosing unit in a reducing agent provision system for emission control of a combustion engine. Characteristics relating to pressure variations associated with a dosing cycle are used for determining a first time period and a second time period. The time periods relate to a delay between activation of dosing and de-activation of dosing, respectively. The first time period and second time period are used for adapting operation of said reducing agent dosing unit.

System and a method for adapting control of a reducing agent dosing unit

A method for evaluating an effective component content (C) of a reducing agent for engine exhaust gas processing arranged in a container () in which a heat transfer provision arrangement () is provided, including steps of: determining (s; s) a prevailing volume (V) and temperature (T) of the reducing agent in the container (); determining (s) a prevailing temperature (T) of the heat transfer provision arrangement (); determining (s) a prevailing temperature (T) of a medium surrounding the container (); for a predetermined time period, determining (s) a mean temperature change rate (Tprim) for the reducing agent; and determining (s) the effective component content (C) of the reducing agent on the basis of the above determined parameters.

Method and a system for evaluating an effective component content of a reducing agent

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Grödinge, Sweden

Joakim Sommansson