Patent ID: 11939903
Assignee: ROBERT BOSCH GMBH
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 18:
19. An apparatus, comprising:
a combustion engine;
an exhaust system with an exhaust burner including a combustion chamber and a glow plug as an ignition device with which a fuel/air mixture within the combustion chamber of the exhaust burner can be ignited;
wherein the apparatus is configured to:
activate the ignition device as a function of a release condition, wherein the ignition device is heated up to a specifiable target temperature;
meter fuel at a first time point into the combustion chamber of the exhaust burner at a specifiable first injection frequency using an injection valve, wherein the combustion chamber is not actively supplied with air, and wherein the fuel is diesel fuel;
set a first target air-mass flow using a secondary air system at a further, second time point, wherein an air-mass flow is increased strictly monotonically;
control an air-fuel ratio to a first target air-fuel ratio as a function of a lambda sensor starting from the second time point, and metering fuel at a specifiable second injection frequency; and
set a second target air-mass flow at a further, third time point.