US 11,988,128 B2
Method and processor unit for operating an exhaust gas burner
Michael Nau, Dornhan/Aischfeld (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Apr. 12, 2022, as Appl. No. 17/718,618.
Claims priority of application No. 10 2021 203 678.3 (DE), filed on Apr. 14, 2021.
Prior Publication US 2022/0333518 A1, Oct. 20, 2022
Int. Cl. F01N 3/20 (2006.01); F01N 3/32 (2006.01); F01N 3/36 (2006.01); F01N 3/38 (2006.01); F01N 9/00 (2006.01)
CPC F01N 3/2033 (2013.01) [F01N 3/204 (2013.01); F01N 3/32 (2013.01); F01N 3/36 (2013.01); F01N 3/38 (2013.01); F01N 9/00 (2013.01); F01N 2900/1818 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method (200) for operating an exhaust gas burner (120) in an exhaust section (102) of an internal combustion engine (110), the method comprising:
introducing a purging fluid comprising at least air (20) into the exhaust gas burner (120) during a purging operating phase (205), which lies outside a time of a normal operating phase (201) of the exhaust gas burner (120), and
discharging a discharge mixture (22) formed using the purging fluid from the exhaust gas burner (120),
wherein the exhaust gas burner (120) is operated for a purpose of heating at least one component (130, 150) of the exhaust section (102) to its operating temperature during the normal operating phase (201),
wherein the exhaust gas burner (120) is configured to be in fluid communication with the exhaust section (102) of the internal combustion engine (110), and
wherein a parameter of the purging operating phase is determined (203) as a function of an operating parameter of the exhaust gas burner (120) determined during the normal operating phase (201).