Ceramic foam prefilter for diesel exhaust filter system
This patent describes a filter apparatus for reducing particulates from exhaust gases from an engine. It comprises a housing having a chamber with an inlet, an outlet, and a fluid flow path leading from the inlet upstream to the outlet downstream; means, within the chamber along the fluid flow path, for filtering the particulates from the exhaust gases, the filtering means including a ceramic filter element having an inlet end; means for regenerating the ceramic filter element, the regenerating means including means for heating the ceramic filter element, the heating means having a heating element supported by the housing; a porous ceramic disc pre-filter between the heating element and the ceramic filter element.
- Assignee:
- Donaldson Co., Inc., Minneapolis, MN (United States)
- Patent Number(s):
- A; US 5053062
- Application Number:
- PPN: US 7-411311
- OSTI ID:
- 5741904
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330102 -- Internal Combustion Engines-- Diesel
330705* -- Emission Control-- Particulates
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
CERAMICS
CONTROL
DIESEL ENGINES
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FILTERS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATERIALS TESTING
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
TESTING