Controlling exhaust gas post treatment device in compression ignition engine comprises determining exhaust gas temperature value, and determining charge value of current source

摘要

Controlling an exhaust gas post treatment device (110) in a compression ignition engine comprises determining an exhaust gas temperature value, determining a charge value of a current source (82), and connecting the current source to a power-reinforced turbocharger depending on the charge value to approximate the exhaust gas temperature value with a required exhaust gas temperature value. An Independent claim is also included for an engine arrangement for compression ignition (10) comprising an exhaust gas post treatment device (110) with a particle filter, a power-reinforced turbocharger (14), and a control device. Preferred Features: The step of determining a charge value of the current source comprises comparing the charge value with a maximum charge value and a minimum charge value. The step of connecting the current source comprises feeding a negative power to the turbocharger when the exhaust gas temperature lies below the required exhaust gas temperature value and the charge value lies below the maximum charge value.