Method for regenerating a particle filter

A method for regenerating a particle filter, which is located in an exhaust system of an internal combustion engine, comprising at least the following steps:

• a) performing a first regeneration of the particle filter until a lower limit value of a particle loading of the particle filter is reached;
• b) operating the combustion engine at a first operating point that is freely selectable by a user;
• c) performing a verification measurement, the combustion engine being operated at a second operating point, so that an exhaust gas having at least
• an oxygen excess or
• an increased first temperature
• is provided upstream of the particle filter;
• wherein step c) is initiated at a time interval after the end of the first regeneration in accordance with step a);
• and
• when an increase in a second temperature of the exhaust gas is ascertained during or after step c) downstream of the particle filter, the following step being performed:
• d) initiating a second regeneration of the particle filter.