Development of Wall-Flow Type Diesel Particulate Filter System with Efficient Reverse Pulse Air Regeneration

A wall-flow type diesel particulate filter system with reverse pulse air developed for vehicles should have the best regeneration performance possible with the least reverse pulse air as possible. We improved the reverse pulse air arrangement to decrease the air consumption and raise regeneration performance. Then, we developed diesel particulate filter (DPF) materials for the pore structure suitable for regeneration.

Test equipment was designed to consume less air than a previous prototype system presented in our SAE paper [1]. The experiments used a soot generator simulating a diesel engine and a diesel engine.

We confirmed that a wall-flow type DPF could possibly be applied to a regeneration system with the low air consumption for mounting on vehicles.