US 12,104,511 B2
Method for calculating reaction heat in an exhaust system
Elke Baeder, Stuttgart (DE); Sascha Giese, Ludwigsburg (DE); Thomas Zein, Sindelfingen (DE); Michael Stein, Loechgau (DE); and Patrick Thierfelder, Leonberg (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Dec. 20, 2023, as Appl. No. 18/390,102.
Claims priority of application No. 10 2022 214 359.0 (DE), filed on Dec. 23, 2022.
Prior Publication US 2024/0209767 A1, Jun. 27, 2024
Int. Cl. F01N 11/00 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01)
CPC F01N 11/005 (2013.01) [F01N 3/20 (2013.01); F01N 9/005 (2013.01); F01N 2900/0412 (2013.01); F01N 2900/0414 (2013.01); F01N 2900/0601 (2013.01); F01N 2900/10 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1621 (2013.01); F01N 2900/1624 (2013.01); F01N 2900/1631 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for calculating reaction heat in an exhaust system (300) of an internal combustion engine using a computer configured with a model (312) including a first model component (10, 314) and a second model component (150, 316), the method comprising:
calculating, using the first model component (10, 314), an exhaust gas composition based on current engine operational variables,
dividing, using the second model component (150, 316), total gas masses from the first model component (10, 314) among individual components (302) of the exhaust system (300) so as to calculate a reaction heat in each component (302) of the exhaust system (300), and
controlling an amount of heat provided to at least one component (302) of the exhaust system (300) based on the calculated reaction heat.