Patent ID: 8881504
Filing Date: 2014-11-11
Classification: B60R,F01N,H02J,Y02A,Y02T

Abstract:
1. An exhaust gas treatment system for an internal combustion engine, comprising: an exhaust gas conduit in fluid communication with, and configured to receive an exhaust gas from the internal combustion engine; a generator; a vehicle electrical system; a primary energy storage device selectively connected to the generator, the primary energy storage device having a threshold state of charge (“SOC”); a rechargeable secondary energy storage device selectively connected to the generator and the vehicle electrical system; an electrically heated catalyst (“EHC”) device in fluid communication with the exhaust gas conduit, the EHC device having an electric heater that is selectively connected to the generator for receiving energy, and a selectively activated catalyst that is heated to a respective light-off temperature; and a control module in communication with the EHC device, the generator, the primary energy storage device, and the rechargeable secondary energy storage device, the control module including: a control logic for monitoring the EHC device to determine if the selectively activated catalyst of the EHC device has achieved the light-off temperature; a control logic for disconnecting the primary energy storage from the generator if the primary energy storage device is above the threshold SOC and if the selectively activated catalyst is below the light-off temperature; and a control logic for connecting the generator to the electric heater of the EHC device and the rechargeable secondary energy storage device to the vehicle electrical system if the primary energy storage is disconnected from the generator, and if the selectively activated catalyst is below the light-off temperature.