Equipment for trapping particulates in engine exhaust gas
A trap is described for automotive exhaust particulates comprising: a honeycomb filter body having thin gas filtering internal walls defining parallel inlet passages open at one end of the main filter body and closed at the other end and parallel outlet passages closed at the one end and open at the other end. Each of the internal walls lies between the inlet passages and the outlet passages and forms a filtration structure for gas flow from the inlet passages to the outlet passages. The internal walls are made of cellular ceramics having a three-dimensional network skeleton with a pore size in a range of the order of from about 40 mesh to about 100 mesh for collision trapping of the particulates sand the thickness of the internal walls being somewhat proportional to pore size and in a range of the order of from about 1.4 mm to about 7 mm.
- Assignee:
- Nippondenso Co., Ltd., Kaiya
- Patent Number(s):
- US 4662911
- OSTI ID:
- 6232545
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330705* -- Emission Control-- Particulates
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CERAMICS
CONTROL
DESIGN
DIMENSIONS
ENGINES
EXHAUST GASES
EXHAUST SYSTEMS
FILTERS
FILTRATION
FLUID FLOW
FLUIDS
GAS FLOW
GASEOUS WASTES
GASES
HONEYCOMB STRUCTURES
INTAKE STRUCTURES
MECHANICAL STRUCTURES
OPERATION
PARTICLES
PARTICULATES
POLLUTION CONTROL
POROSITY
REMOVAL
SEPARATION PROCESSES
THICKNESS
VEHICLES
WALLS
WASTES