Apparatus and methods for testing a honeycomb filter

摘要

Methods of testing a honeycomb filter include the step of wetting the outer peripheral surface of the honeycomb filter to enhance the flow of fog through outer peripheral channels of the honeycomb network of channels. In further examples, methods include the step of obstructing a flow of fog through inner peripheral channels to enhance the flow of fog through the outer peripheral channels of the honeycomb network of channels. In further examples, apparatus for testing a honeycomb filter include a flow diverter with a blocking member.

主权项

1. A method of testing a honeycomb filter comprising the steps of:
(I) providing a honeycomb filter including a first end portion and a second end portion along an axis of the honeycomb filter, the honeycomb filter including honeycomb network of channels defined by a plurality of intersecting walls, wherein the honeycomb network of channels extend along the axis of the honeycomb filter between the first end portion and the second end portion, wherein the honeycomb filter is provided with an outer peripheral surface circumscribing the honeycomb network of channels and extending between the first end portion and the second end portion; (II) flowing a fog with moisture droplets into the honeycomb network of channels at the first end portion of the honeycomb filter; (III) monitoring the second end portion of the honeycomb filter for moisture droplets of the fog exiting the honeycomb network of channels; and (IV) wetting the outer peripheral surface of the honeycomb filter to enhance the flow of fog through outer peripheral channels of the honeycomb network of channels.