Scania Cv Ab

Carl-Johan Karlsson

Klas Telborn

A method and a system for estimation of a soot load in a particle filter in an exhaust cleaning system, which estimation involves using a pressure drop across said particle filter in order to determine the soot load. Measurement of the pressure drop across the particle filter and therefore the estimation have to take place at a time when an exhaust mass flow of the exhaust cleaning system exceeds a flow threshold value, the particle filter is substantially free from water and a temperature of the particle filter exceeds a first threshold value. The result is a robust estimate of the soot load in the particle filter.

Method and system for exhaust cleaning

A method for regeneration of a particle filter () pertaining to a combustion process, which filter treats exhaust gases arising from combustion in a combustion engine (): During regeneration, controlling the engine () according to a first mode and a second mode, in the first mode, the engine () is controlled such that a high exhaust temperature is generated, determining a temperature of the particle filter (), and controlling the engine () according to the first mode when the temperature determined is below a first value until the temperature reaches a higher second value, and then controlling the engine in the second mode. The invention relates also to a system and a vehicle ().

Method and system for diesel particle filter regeneration

A method pertaining to regeneration of a particle filter () pertaining to a combustion process, which filter is arranged to treat exhaust gases arising from combustion in a combustion engine (). When at least one measure for raising the temperature of the particle filter () is activated, determining a temperature for the particle filter (), comparing the temperature determined with a first temperature and discontinuing the measure for raising the temperature of the particle filter () when the temperature determined is below the first temperature.

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Strömstad, Sweden

Carl-Johan Karlsson