US 11,988,129 B2
Method for operating a fuel-operated burner
Chao Zhang, Beilstein (DE); Dietmar Uhlenbrock, Stuttgart (DE); Erwin Schiele, Flein (DE); Winfried Langer, Illingen (DE); Markus Deissler, Heilbronn (DE); and Michael Nau, Dornhan/Aischfeld (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Feb. 16, 2023, as Appl. No. 18/170,311.
Claims priority of application No. 10 2022 201 645.9 (DE), filed on Feb. 17, 2022.
Prior Publication US 2023/0258116 A1, Aug. 17, 2023
Int. Cl. F01N 3/20 (2006.01)
CPC F01N 3/2033 (2013.01) 11 Claims
OG exemplary drawing
 
1. A method for operating a burner (3) to introduce burning gases or burning exhaust gas into an exhaust system downstream of an engine (1) and upstream of a catalytic converter (4), the method comprising:
actuating a fuel metering device (10) to deliver fuel (11) to the burner (3) starting at a meter time (t1),
actuating an ignition apparatus (12) of the burner (3) such that it ignites at an ignition time (t0) and subsequently burns for a burning duration (304), and
determining the meter time (t1) and/or the ignition time (t0), such that fuel delivered to the burner (3) at the meter time (t1) is not deposited in the burner prior to the ignition time but reaches the ignition apparatus at ignition time (t0) or during the burning duration (304),
wherein the ignition apparatus is a spark plug and
wherein the burning duration is a time during which an energy of an ignition coil of the spark plug discharges to a secondary side of the spark plug.