Thomas Joseph Bazil

US Patent:

53514831, Oct 4, 1994

Filed:

Apr 16, 1993

Appl. No.:

8/046704

Inventors:

James E. Riley - Northville MI
Thomas E. Bazil - Northville MI
William R. Adam - Birmingham MI
Hans P. Creutz - Saline MI
Robert W. McCabe - Lathrup Village MI
Haren S. Gandhi - Farmington Hills MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F01N 320

US Classification:

60274

Abstract:

An integral manifold-muffler-catalyst device (for an internal combustion engine having a plurality of combustion cylinders generating exhaust gases), comprising: (a) a monolithic catalyst having a plurality of aligned passages for effecting laminar flow of the exhaust gases therethrough while; (b) a high temperature resistant chamber assembly for close-coupling the catalyst to the engine having (i) an expansion chamber for substantially dissipating low frequency standing sound waves of said exhaust gases and for modifying high frequency sound waves of said exhaust gases and (ii) manifolding passages at one side of the expansion chamber for collecting and delivering the exhaust gases from the cylinders to the expansion chamber; and (c) means for effecting converging flow from said expansion chamber to and across substantially the full entrance face of said aligned passages, as well as from the catalyst, for effecting attenuation of high frequency sound waves carried by the exhaust gases.

US Patent:

52207897, Jun 22, 1993

Filed:

Mar 5, 1991

Appl. No.:

7/664722

Inventors:

James E. Riley - Northville MI
Thomas E. Bazil - Northville MI
William R. Adam - Birmingham MI
Hans P. Creutz - Saline MI
Robert W. McCabe - Lathrup Village MI
Haren S. Gandhi - Farmington Hills MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F01N 328

US Classification:

60302

Abstract:

An integral manifold-muffler-catalyst device (for an internal combustion engine having a plurality of combustion cylinders generating exhaust gases), comprising: (a) a monolithic catalyst having a plurality of aligned passages for effecting laminar flow of the exhaust gases therethrough while; (b) a high temperature resistant chamber assembly for close-coupling the catalyst to the engine having (i) an expansion chamber for substantially dissipating low frequency standing sound waves of said exhaust gases and for modifying high frequency sound waves of said exhaust gases and (ii) manifolding passages at one side of the expansion chamber for collecting and delivering the exhaust gases from the cylinders to the expansion chamber; and (c) means for effecting converging flow from said expansion chamber to and across substantially the full entrance face of said aligned passages, as well as from the catalyst, for effecting attenuation of high frequency sound waves carried by the exhaust gases.