Regeneration Capability of Diesel Particulate Filter System Using Electric Heater 930365
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.
Citation: Kobashi, K., Hayashi, K., Aoki, H., Kurazono, K. et al., "Regeneration Capability of Diesel Particulate Filter System Using Electric Heater," SAE Technical Paper 930365, 1993, https://doi.org/10.4271/930365. Download Citation