Internal combustion engine with afterburning and catalytic reaction in a supercharger turbine casing

Apparatus for cleaning the exhaust gases from a liquid fuel driven engine comprising a turbosupercharger, said turbosupercharger comprising a turbine and a compressor interconnected with said turbine, said turbine including a turbine housing, air carrying pipes arranged to supply air from said compressor to the engine, a supercharger intercooler located in said air carrying pipes between said compressor and the engine, said air carrying pipes including a branch pipe extending from said supercharger intercooler into said turbine housing, first exhaust gas pipe means connected to said turbine housing and arranged to convey exhaust gases thereto from the engine and to provide a space for effecting a first afterburning of the exhaust gases before the exhaust gases are introduced into said turbine housing, said turbine housing forming a flow duct therein for flowing exhaust gases within said turbine housing, said turbine housing having an inlet and an outlet, second exhaust gas pipe means connected to the outlet from said turbine housing for providing a space for effecting a second afterburning of the exhaust gases after they exit from the outlet of said turbine housing, a layer of a low thermal conductivity material lining said flow duct for exhaust gases, and catalytic means located in said turbine housing for providing a catalytic effect on the exhaust gases flowing therethrough and including a first catalytic member located in said turbine housing inlet for providing a catalytic effect on the exhaust gases flowing through the turbine housing inlet and a second catalytic member located in said turbine housing outlet for providing a catalytic effect on the exhaust gases flowing through the turbine housing outlet so that the exhaust gases from the engine flow through and are catalytically treated by said first and second catalytic members on entering into and exiting from said turbine housing.

Apparatus for cleaning the exhaust gases from a liquid fuel driven engine comprising a turbosupercharger, said turbosupercharger comprising a turbine and a compressor, said turbine including a turbine housing, air carrying pipes arranged to supply air from said compressor to the engine, a supercharger intercooler located in said air carrying pipes between said compressor and the engine, said air carrying pipes including a branch pipe extending from said supercharger intercooler into said turbine housing, an exhaust gas pipe connected to said turbine housing and arranged to convey exhaust gases thereto from the engine, said turbine housing forming a flow duct therein for flowing exhaust gases within said turbine housing, said turbine housing having an inlet and an outlet, a layer of a low thermal conductivity material lining said flow duct for exhaust gases, and catalytic means located in said turbine housing for providing a catalytic effect on the exhaust gases flowing therethrough and including a first catalytic member located in said turbine housing inlet and a second catalytic member located in said turbine housing outlet so that the exhaust gases from the engine flow through said first and second catalytic members on entering into the exiting from said turbine housing and said turbine includes a nozzle ring having blades, said blades being formed of a porous ceramic material having a catalytic effect on the exhaust gases flowing through said turbine, said turbine further includes a turbine wheel located radially inwardly relative to said nozzle ring, said flow duct located radially outwardly relative to said nozzle ring and said flow duct and turbine wheel forming a torus shaped space therebetween with said nozzle ring being located in said torus shaped space.