Donaldson Comapny, Inc.

John H Chastain, Jr

Xiaobin Wang

Jacob C Savstrom

Chad M Goltzman

Daryl L Quam

Peter P Vitko

Matthew J Anderson

Eric P O'Hara

Charles E Kotasek

Embodiments herein relate to monitoring systems that can learn patterns of filtration system operation and then use the learned patterns to monitor ongoing filtration system operation/performance. In a first aspect, a monitoring system for an air filtration system is included having a control circuit, and a pressure sensor, wherein the pressure sensor is in electronic communication with the control circuit. The monitoring system can be configured to store data reflecting signals of the pressure sensor, evaluate the stored data representing a first time period to derive a valve operating pattern, and compare data from the pressure sensor obtained after the first time period against the derived valve operating pattern to identify an abnormal valve event.

Air filtration monitoring system with learning features

A precleaner arrangement for separating a portion of entrained material from air flow air entering an engine air cleaner. The precleaner arrangement includes a precleaner housing and at least a first flexible air deflection vane with a fixed portion secured to the precleaner housing and a deflectable portion. The deflectable portion includes a curved section extending from the fixed portion and a tail section extending from the curved section. The deflectable portion is configured to deflect in response to a sufficient air flow rate change through the precleaner arrangement, in use. Some arrangements will also include a second stage, outlet vane assembly.

Precleaner arrangement for use in air filtration and methods

Growing community of inventors

Minneapolis, MN, United States of America

John H Chastain, Jr