Patent ID: 11913399
Assignee: ROBERT BOSCH GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. An internal combustion engine, comprising:
an intake tract;
at least one cylinder;
an exhaust tract; and
a computing unit configured to adjust a fuel mass to be injected into the internal combustion engine, the computing unit configured to:
ascertain an air mass introduced into the at least one cylinder of the internal combustion engine;
determine a fuel mass to be injected into the at least one cylinder of the internal combustion engine;
measure using a lamda sensor an air-fuel ratio in the exhaust tract of the internal combustion engine;
temporally adjust the measured air-fuel ratio to obtain a time-adjusted air-fuel ratio, wherein the temporal adjustment of the measured air-fuel ratio is ascertained based on a model of the exhaust track which takes into account a storage behavior of an exhaust gas line between an exhaust valve of the internal combustion engine and a position at which the air-fuel ratio is measured by the lambda sensor, and based on a response behavior of the lambda sensor;
determine a first wall film fuel mass based on the time-adjusted air-fuel ratio, the ascertained introduced air mass, and the determined fuel mass to be introduced; and
adjust the fuel mass to be injected based on the calculated first wall film fuel mass.