US 12,460,569 B2
Engine data processor and computer-implemented method for the adjustment of an exhaust gas composition
Karsten Harder, Oberteuringen (DE)
Assigned to Rolls-Royce Solutions GmbH, Friedrichshafen (DE)
Filed by Rolls-Royce Solutions GmbH, Friedrichshafen (DE)
Filed on Sep. 13, 2024, as Appl. No. 18/884,387.
Claims priority of application No. 102023003755.9 (DE), filed on Sep. 15, 2023.
Prior Publication US 2025/0092812 A1, Mar. 20, 2025
Int. Cl. B60T 7/12 (2006.01); F01N 9/00 (2006.01); F01N 11/00 (2006.01)
CPC F01N 11/00 (2013.01) [F01N 9/007 (2013.01); F01N 2900/1614 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An engine data processor for an internal combustion engine, the engine data processor comprising:
the engine data processor, which is structured and arranged for adjusting a leaking exhaust gas composition for the internal combustion engine, the engine data processor being further structured and arranged for:
receiving a geometric characteristic of an exhaust unit which is structured and arranged for being that through which the exhaust gas composition is discharged, and determining from the geometric characteristic a smoke visibility limit value;
receiving a filter fill status information from an exhaust gas filter which is structured and arranged for filtering the exhaust gas composition;
receiving a mean catalytic converter temperature of an exhaust gas catalytic converter structured and arranged for catalyzing the exhaust gas composition and determining a nitrogen dioxide conversion rate subject to the filter fill status information which has been received and the mean catalytic converter temperature;
comparing the nitrogen dioxide conversion rate—which has been calculated—with the smoke visibility limit value, and determining therefrom a control variable for the internal combustion engine so that the exhaust gas composition is invisible; and
issuing the control variable.