Patent ID: 8152912

Claim:
A device for reducing the particle emissions of an internal combustion engine, in particular a diesel engine, comprising: a particle filter installed in the exhaust gas line of the internal combustion engine; a device for determining the soot charge state of the particle filter, the device for determining the charge state having a pressure sensor arranged in the exhaust gas line in a direction of flow of the exhaust gas upstream of the particle filter for detecting the prevailing pressure in the exhaust gas line and a volumetric flow sensor arranged downstream of the particle filter in the direction of the flow of the exhaust gas, wherein the volumetric flow sensor comprises a measuring cone arranged in the exhaust gas line, a longitudinal axis of the measuring cone being parallel to a longitudinal axis of the exhaust gas line in this section; the measuring cone arranged with a conical surface facing the direction of flow of the exhaust gas in the exhaust gas line, wherein one measuring point for measuring the dynamic pressure in the center of the cone is located opposite to the direction of flow of the exhaust gas, and one measuring point for measuring the static pressure is located in the no-flow zone of the measuring cone; and wherein two sensors for evaluating measured results are connected to control a unit.