Regeneration capability of a wall-flow monolith type diesel paticulates filter with an electric heater was studied. To prevent filter crack generation and unburned particulates accumulation, a precision controller was added to the test equipment to reduce thermal load. In order to control the supply of oxygen to potentially prevent cracking, a second air feeder was also added. Furthermore, to ignite the accumulated particulates uniformly and propagate extensively to burn accumulated particulates completely a newly improved heater unit was employed.Repeated regeneration tests were conducted with cars on a chassis dynamometer. Though crack generation and unburned particulates accumulation were reduced considerably, satisfactory prevention could not be achieved. Therefore a parameter study using regenerative burning and thermal stress analysis model was carried out.Experimental results showed that by a further improved control and more efficient insulating material filter casing, crack generation and unburned particulate accumulation could be subdued.
Regeneration Capability of Diesel Particulate Filter System Using Electric Heater
Sae Technical Papers
International Congress & Exposition ; 1993
1993-03-01
Conference paper
English
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