Patent ID: 7536853
Filing Date: 2009-05-26
Classification: F01N,F01P,F02D,Y02A,Y02T

Abstract:
1. A heating system for use on an exhaust system having an exhaust gas passageway to emit exhaust gases from an engine to an outlet, the engine having a cooling system to circulate a cooling fluid to and from the engine, comprising: a fuel-dosing member for dosing fuel to the exhaust system to trigger a regeneration event; a particulate filter located on the exhaust gas passageway downstream of the engine; an oxidation catalyst member located upstream from said particulate filter on the exhaust gas passageway, wherein said oxidation catalyst member oxidizes said fuel dosed to increase the temperature of the exhaust gases, wherein the increased temperature causes a regeneration event at said particulate filter, said regeneration event further increasing the temperature of said exhaust gases; an outlet of the exhaust gas passageway downstream of said oxidation catalyst member; a heat exchanger located downstream of said particulate filter on the exhaust gas passageway and located between said oxidation catalyst and said outlet, said heat exchanger for capturing heat from the exhaust gases associated with said regeneration event; an inlet conduit fluidly connecting said heat exchanger with the engine and configured for circulating the cooling fluid from the engine to said heat exchanger where the cooling fluid is heated; an outlet conduit fluidly connecting said heat exchanger with the engine and configured for circulating the heated cooling fluid from the heat exchanger back to the engine; an engine outlet conduit fluidly connected to said inlet conduit for delivering the heated cooling fluid from said heat exchanger throughout the vehicle body to heat an interior compartment of the vehicle; and an engine inlet conduit fluidly connected to said engine outlet conduit for returning the cooling fluid to the engine.