Patent ID: 9689297
Date: 2017-06-27
CPC Classifications: F01N,Y02T

Claim:
1. An exhaust gas processing system of an internal combustion engine, comprising: a diesel particulate filter; an exhaust gas passage device positioned upstream from said diesel particulate filter including a first high pressure passage, a second high pressure passage fluidly connected to said diesel particulate filter, and a low pressure passage, wherein both of said first high pressure passage and said second high pressure passage have a larger cross-section area than said low pressure passage; a fuel injector in communication to said first high pressure passage for releasing a dosing fuel in regenerating said diesel particulate filter; a heating device fluidly connected to said first high pressure exhaust passage receiving a mixture of said dosing fuel and an exhaust gas flow; a first diesel oxidation catalyst positioned downstream from said heating device fluidly connected to said low pressure exhaust passage; a second diesel oxidation catalyst positioned in between said exhaust gas passage device and said diesel particulate filter; and a regeneration controller configured to control a power applied to said heating device and a flow rate of said dosing fuel in regenerating said diesel particulate filter.