Integral unitary manifold-muffler-catalyst device

Patent · Tue Jun 22 00:00:00 EDT 1993

OSTI ID:6466279

Riley, J E; Bazil, T E; Adam, W R; Creutz, H P; McCabe, R W; Gandhi, H S

An integral manifold-muffler-catalyst device for an internal combustion engine having a plurality of combustion cylinders generating exhaust gases is described, comprising: (a) a monolithic catalyst having a plurality of aligned passages for effecting laminar flow of the exhaust gases therethrough; (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 sound waves of the exhaust gases and for modifying high frequency sound waves of the 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 the expansion chamber to and substantially the full entrance face of the aligned passages and for effecting converging flow from the catalyst, the dual-stage convergence reflecting and attenuating high frequency sound waves carried by the exhaust gases by interference.

• Assignee: Ford Motor Co., Dearborn, MI (United States)
• Patent Number(s): US 5220789; A
• Application Number: PPN: US 7-664722
• OSTI ID: 6466279
• Resource Relation: Patent File Date: 5 Mar 1991
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
CATALYTIC CONVERTERS
ROTARY ENGINES
SPARK IGNITION ENGINES
AIR POLLUTION CONTROL
AUTOMOBILES
EXHAUST GASES
NOISE POLLUTION
CONTROL
ENGINES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
POLLUTION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
VEHICLES
WASTES
330100* - Internal Combustion Engines
330700 - Advanced Propulsion Systems- Emission Control