Diesel exhaust particulate trap with pleated filter

Details Diesel exhaust particulate trap with pleated filter Diesel exhaust particulate trap with pleated filter

1982-10-20

1984-06-26

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By sorber or mechanical separator

55215, 55283, 55497, 55499, 55500, 55521, 55523, 55DIG30, F01N 302

Patent

active

044558236

ABSTRACT:
A diesel exhaust particulate trap is provided with a heat resistant particulate filter which includes a perforated and pleated metal substrate member coated with a ceramic fiber filter material on its interior surface so as to define a filter chamber for the inside-out flow of exhaust gases through the filter. In a preferred embodiment, an electrical particulate filter igniter is associated with the filter. The igniter includes a trap door pivotably secured to the substrate member, which is normally biased to a closed position by a spring but which can be opened by exhaust flow prior to an accumulation of particulates on the filter. Opening and closing of the trap door is used to effect deenergization and energization, respectively, of an electrical heating element used to initiate combustion of particulates.

REFERENCES:
patent: 3244315 (1964-08-01), Hunn
patent: 3937015 (1976-02-01), Akado
patent: 4264344 (1981-04-01), Luedecke
patent: 4283207 (1981-08-01), Martyniuk
patent: 4343149 (1982-08-01), Abtheff
patent: 4359864 (1982-11-01), Bailey

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