Engine assembly comprises engine, which is configured, such that engine selectively generates exhaust gas and by engine speed, which has value for selectively variable engine speed

摘要

The engine assembly comprises an engine (10), which is configured, such that the engine selectively generates the exhaust gas and by an engine speed, which has a value for selectively variable engine speed. An exhaust system (78) is provided, which has a line (82) that defines a passageway (86) and operatively connected to the engine. A data storage unit (128) is provided storing a database (132) for multiple different combinations of engine speed value and estimated quantity of nitrogen oxides in exhaust gas. An independent claim is also included for a method for estimating the quantity of nitrogen oxides in the exhaust gas of an engine.