Patent ID: 9181828
Filing Date: 2015-11-10
Classification: F01N,F02B,F02D,F02M,Y02T

Abstract:
1. A method for providing EGR in an internal combustion engine having an exhaust system and an intake system, comprising: flowing exhaust gases in an EGR line, said EGR line connecting to said exhaust system at a location in said exhaust system that is downstream of a turbine and upstream of a first particulate filter and an oxidation catalyst, said oxidation catalyst upstream of the first particulate filter, said exhaust gases flowing through a second particulate filter that is heated by an electrical heater, said second particulate filter disposed in said EGR line that enters said intake system; and activating the electrical heater in response to turbocharger rotational speed and applying a level of current to the electrical heater and increasing the level of current at a ramp rate responsive to an increasing temperature of said second particulate filter.