Donaldson Comapny, Inc.

Edward A Steinbrueck

Steven Scott Gieseke

Wayne R W Bishop

William M Juliar

Patrick Golden

Wayne C Musselman

Wayne M Wagner

Daniel T Risch

Gary Ray Gillingham

Joseph C Tokar

Bruce B Hoppenstedt

Bernard A Matthys

Ervin P Fuchs

Timothy M Ramos

Carolyn J Finnerty

Fred H Wahlquist

Jim C Rothman

Wenzhong Zhang

Steven Alan Carter

Douglas E Flemming

Theodore G Angelo

Ted J Wiegandt

Wayne Rw Bishop

Zhixin Jason Hou

Mike Anderson

Richard P Ryan

A filter arrangement includes a filter element, a frame construction secured to the filter element, and a handle member secured to the filter element. In preferred embodiments, the handle member is secured to the frame construction. Preferably, the filter element includes a central core member, wherein fluted filter media is coiled around the central core member. Preferably, the central core member includes a plurality of corrugations, wherein the corrugations mateably engage at least some flutes. Preferably, the handle member is integral with the central core member, and also includes a fastening member for connection to a frame construction on the filter element. Methods for cleaning air and servicing an air cleaner preferably include constructions as described herein.

Filter element, air cleaner, and methods

A system or method for controlling the delivery of fuel into the transient flow of an exhaust system to control emissions. A mathematical model representative of the exhaust system can be used to determine, based on operating conditions of the exhaust system, a rate of fuel delivery suitable for achieving a desired result. The desired result can be to increase the temperature of a diesel particulate filter to a temperature suitable for regeneration without exceeding a temperature that may damage the diesel particulate filter.

Method of dispensing fuel into transient flow of an exhaust system

Centerpiece for filter element

Filter element with centerpiece

In-line air cleaner

An air cleaner includes a housing having first and second opposite ends. A media pack is preferably oriented within the interior volume of the housing. In preferred embodiments, the media pack will have a first and second opposite flow face and be constructed and arranged for air to flow into the media pack through the first flow face, and for air to exit the media pack through the second flow face. The air cleaner will include a seal member forming a seal between the media pack and the housing. In preferred constructions, a secondary filter element is oriented within the interior volume of the housing. In some preferred embodiments, the housing is constructed and arranged as a resonator. Certain embodiments include a seal construction that engages the secondary filter element. Methods of filtering systems, servicing filtration systems, and constructing filter arrangements and housings will use filter elements and constructions as characterized above.

Air cleaner having sealing arrangement between media arrangement and housing

An integral filter and resonator apparatus includes filter elements positioned upstream of a Helmholtz resonator. The first embodiment includes filter elements positioned side by side within the housing. Other embodiments include a filter element with a tube which curves slightly downstream from the element. Another embodiment includes coupled chambers for attenuating the noise.

Integrated resonator and filter apparatus

Growing community of inventors

Eden Prairie, MN, United States of America

Edward A Steinbrueck