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US 2014/0360163 A1Published application
System and method for controlling an engine that includes low pressure egr
AssigneeFord Global Technologies, LLC
InventorsEric Matthew Kurtz, Waheed Alashe
Life of this patent
Estimating the term…
Abstract
Methods and systems for operating an engine that includes a low pressure EGR passage and a selective reduction catalyst are disclosed. In one example, an actuator is adjusted in response to a NOx mass flow rate in the low pressure EGR passage.
Claims20
A method for operating an engine, comprising:
- adjusting an actuator in response to a NOx mass flow rate in a low pressure EGR passage between an engine exhaust system and an engine air intake system.
A method for operating an engine, comprising:
- varying an amount of EGR delivered to an engine via a high pressure EGR passage and a low pressure EGR passage in response to a concentration of NOx in an exhaust passage location downstream of an SCR catalyst.
A method for operating an engine, comprising:
- adjusting an amount of high pressure EGR and an amount of low pressure EGR provided to an engine in response to a NOx mass flow in one of a high pressure EGR passage and a low pressure EGR passage.
Dependencies are inferred from the claim text.