Power plants – Internal combustion engine with treatment or handling of... – By electrolysis – electrical discharge – electrical field – or...
Patent
1988-11-01
1990-11-13
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
By electrolysis, electrical discharge, electrical field, or...
55131, 55DIG30, 60288, 60297, F01N 302
Patent
active
049693280
ABSTRACT:
A device for collecting and removing particulate emissions from diesel engine exhaust before the exhaust is discharged into the atmosphere. The device comprises an enclosure having an inlet, an outlet, a main flow path, containing a medium for trapping and removing particulate material, a by-pass for diverting the exhaust flow around the main flow path, a heating unit to initiate forced regeneration of the medium and a control system for regulating the forced regeneration of the medium and the flow through the main and by-pass flow paths. In a first aspect of the invention the regeneration of the medium and the flow through the main and by-pass flow paths are regulated by a pair of valves, a thermocouple, engine sensors, and a back-pressure switch. In a second aspect of the invention, a single valve and microcomputer are used in place of the pair of valves and in conjunction with the thermocouple regulate the flow through the main and by-pass flow paths and the regeneration of medium. In a third aspect, a compact enclosure is provided for installations where space is limited. An optional pre-converter, electrostatic precipitator, air injection and thermal stabilizer are disclsoed for enhancing performance and increasing the filtration efficiency of the device over a broad range of diesel engine applications.
REFERENCES:
patent: 2822058 (1958-02-01), Roos
patent: 3446800 (1969-04-01), Messen-Jaschin
patent: 3798879 (1974-03-01), Schmidt-Burbach
patent: 4029482 (1977-06-01), Postma
patent: 4093432 (1978-06-01), Ahlrich
patent: 4380900 (1983-04-01), Linder
Hart Douglas
Rhodes Alex
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