Muffler with catalyst for internal combustion engine
Patent
·
OSTI ID:5688580
A muffler for an internal combustion engine is described consisting of: a casing; a catalyst disposed within the casing to convert noxious components of exhaust gas received from the engine at an upstream side of the catalyst into harmless gases at a downstream side; an exhaust gas inlet pipe including an inlet pipe section having a venturi section means for introducing secondary air into the exhaust gas inlet pipe to mix with exhaust gas, and an extension pipe section coaxially connected with the inlet pipe section and extended downstream of the venturi section means for conveying the mixture of exhaust gas and secondary air in an original direction through the casing, the extension pipe section having a length of at least two times the inner diameter of the extension pipe section; first flow reversal and supply means for reversing the direction of flow of the mixture of exhaust gas and secondary air received from the extension pipe and supplying the mixture to the upstream side of the catalyst, second flow reversal and supply means at the downstream side of the catalyst for receiving and reversing the direction of flow of harmless gases to the original direction, and means communicating between the second flow reversal and supply means and the atmosphere for discharging the harmless gases.
- Assignee:
- Nissan Motor Co., Ltd., Yokohama
- Patent Number(s):
- US 4579194
- OSTI ID:
- 5688580
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION ABATEMENT
CATALYSTS
CATALYTIC CONVERTERS
DESIGN
DISPERSIONS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MIXTURES
NOISE POLLUTION ABATEMENT
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
WASTES
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
AIR POLLUTION ABATEMENT
CATALYSTS
CATALYTIC CONVERTERS
DESIGN
DISPERSIONS
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MIXTURES
NOISE POLLUTION ABATEMENT
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
WASTES