Volvo Lastvagnar Ab

Emotron Ab

Daimler Ag

Volvo Car Corporation

Johan Bengtsson

Hans Bernler

Christer Alm

Henrik Stendahl

Ingemar Eckerström

G&ouml;ran G&ouml;ransson

Mikael Jönson

Annika Isaksson

Siw Eriksson

Tommy Johansson

Reine Persson

Johan Land

Göran Lagerberg

Thomas Gisslén

An exhaust gas after treatment system includes a diesel particulate filter unit (DPFU) provided downstream of a diesel engine, a selective catalytic reduction (SCR) arrangement provided in fluid communication with said DPFU, a first injector for feeding reducing agent into the exhaust gas provided downstream of said DPFU and upstream of said SCR, at least one NOx sensor provided downstream of said SCR for providing at least one NOx signal to a NOx coordinator, at least one temp sensor provided upstream and/or downstream of said SCR for providing at least one temp signal to said NOx coordinator, wherein said NOx coordinator is provided for switching said diesel engine into a high NOx mode or a low NOx mode depending on the values of the at least one NOx signal and the at least one temp signal.

Exhaust gas after treatment system

A control circuit for a reluctance machine having two mutually movable parts and at least one inductive phase winding adapted for a certain maximum drive current value. The method includes detecting when a phase winding is in a non-drive mode; causing a test current, having a second maximum value lower than said certain maximum value, to flow through the phase winding and through a current sensor when the winding is in the non-drive mode; and establishing a mutual position in dependence of the output of said current sensor.

Controller for electrical machines

Growing community of inventors

Göteborg, Sweden

Johan Bengtsson