Reducing agent injection adjusting method for internal combustion engine, involves adapting amount of reducing agent that is to be injected downstream to catalytic converter on basis of determined hydrocarbon emissions

摘要

The method involves determining hydrocarbon emissions depending on an opetrating parameter that is used for operation of an internal combustion engine (10). An amount of a reducing agent (60) that is to be injected downstream to a selective catalytic reduction catalytic converter (20) is adapted on the basis of determined hydrocarbon emissions. The amount of the reducing agent that is to be injected is controlled by a storage capacity model of a reducing agent, which provides the determined hydrocarbon emissions. An independent claim is also included for a method for operating a selective catalytic reduction catalytic converter.