Emissions control in stationary rich burn engines

摘要

A catalyst system may include a three-way catalyst that receives exhaust gases from an engine and an ammonia slip catalyst that receives exhaust gases from the three-way catalyst. An air injection component can be configured between the three-way catalyst and the ammonia slip catalyst. A first sensor can determine first exhaust gases data and transmits that data to a controller, while a second sensor can determine second exhaust gases data and transmit that data to a controller. The controller can estimate unmeasured exhaust gases data based on the data received from the sensors and determine a setting of a component of the system and/or of the engine based on the unmeasured exhaust gases data.

主权项

1. A system comprising:
a three-way catalyst that receives first exhaust gases from an engine; an ammonia slip catalyst that receives second exhaust gases from the three-way catalyst; an air injection component configured between the three-way catalyst and the ammonia slip catalyst; a first sensor that determines first exhaust gases data and transmits the first exhaust gases data to a controller; a second sensor that determines second exhaust gases data and transmits the second exhaust gases data to the controller; and the controller that estimates unmeasured exhaust gases data based on the first exhaust gases data and the second exhaust gases data and determines a setting of at least one of a component of the system or a component of the engine based on the unmeasured exhaust gases data.