METHOD FOR ADJUSTING A FUEL/AIR RATIO OF AN INTERNAL COMBUSTION ENGINE

The invention relates to a method for adjusting a fuel/air ratio of an internal combustion engine (10), comprising a catalyst volume (26) with a first catalyst partial volume (26.1) and a second catalyst partial volume (26.2). The second catalyst partial volume (26.2) is arranged downstream from the first catalyst partial volume (26.1). An actual filling level of an exhaust gas constituent in thecatalyst volume (26) is calculated from operating parameters of the internal combustion engine (10) and the exhaust system (14) using a computing model, and is adjusted to a nominal value by modifyingthe fuel/air ratio. The adjustment is carried out first for the second catalyst partial volume (26.2) and only later for the first catalyst partial volume (26.1). 本发明涉及一种用于调节燃烧马达（10）的燃料/空气比的方法，所述燃烧马达具有催化器容积（26），所述催化器容积具有第一催化器部分容积（26.1）和第二催化器部分容积（26.2）。所述第二催化器部分容积（26.2）处于所述第一催化器部分容积（26.1）的下游。所述催化器容积（26）中的废气成分的实际填充水平从所述燃烧马达（10）和排气系统（14）的运行参数中用计算模型来计算并且通过所述燃料/空气比的改变来调节到目标值。首先为所述第二催化器部分容积（26.2）并且后来才为所述第一催化器部分容积（26.1）进行所述调节。