Donaldson Comapny, Inc.

Other

Dnaldson Company, Inc.

Wayne M Wagner

Gary Ray Gillingham

Daniel T Risch

Joseph C Tokar

John T Herman

Fred H Wahlquist

Douglas E Flemming

Bernard A Matthys

Jim C Rothman

Marty A Barris

Edward A Steinbrueck

Eivind Stenersen

Bruce B Hoppenstedt

James C Rothman

Peter A Betts

John R Hiemstra

Wenzhong Zhang

David E Winnes

John I Belisle

Mary Joanne Lorenzen

Timothy A Bethke

Michael J Protas

James P Shields

Steven Alan Carter

Gregory L Reichter

Stephen Sabelko

Steven D Schmeichel

Theodore G Angelo

Gary Dale Reeves

Pete A Betts

John S Wiese

Bryan D Patten

Ted J Wiegandt

Francis A Friedmann

Eugene D Wilson

Ervin P Fuchs

Julian A Imes

Todd R Taubert

Josh Kundert

John Hamrin

Allan T Hovda

John A Campbell

Ed Steinbrueck

Gary John Rocklitz

James A LeBlanc

Mervin E Wright

Jared D Blaisdell

Kelly C Robertson

Derek Hiemstra

Scott Peters

Thomas J Retka

James E Vogel

John L Belisle

William L Burchett

Zhixin Jason Hou

Mike Anderson

Steve Anderson

Richard P Ryan

David L Roberts

Joanne E Kleinhenz

This disclosure relates to a method for controlling a system for regenerating a diesel particulate filter. The method includes monitoring an engine run time that has lapsed since a previous regeneration event. The method also includes monitoring backpressure behind the diesel particulate filter. The method further includes triggering a regeneration flag if the engine run time that lapsed since the previous regeneration event reaches a predetermined time limit and the backpressure exceeds a minimum value.

System and method for regenerating an auxiliary power unit exhaust filter

The present disclosure relates to a diesel exhaust treatment device including a catalytic converter positioned upstream from a diesel particulate filter. An electric heater is positioned between the catalytic converter and the diesel particulate filter. A shore station can be used to provide power and combustion air to the diesel exhaust treatment device during regeneration of the diesel particulate filter.

Diesel particulate filter regeneration system including shore station

Exhaust treatment device with electric regeneration system

Fluted filter media includes filter material having a plurality of flutes formed therein having alternating ends of adjacent flutes closed to force fluid through filter material. A first embodiment of the filter media includes tapered flutes which have the open ends of the flutes larger in cross-section than the closed flutes, wherein the upstream open flutes converge toward the downstream end and the upstream closed end flutes diverge toward the downstream end. A second embodiment includes filter media which is asymmetric formed with dissimilar upstream and downstream flute cross-sections with larger flute openings to the upstream side of the filter. A third embodiment includes filter media with an upstream edge crushed to improve flow at the upstream edge. A fourth embodiment includes filter media with the upstream sealing material recessed from the upstream edge for reducing effects from blockages at the upstream edge of the filter.

Fluted filter media

The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust aftertreatment device. The pulse cleaner includes a cabinet, a diesel exhaust aftertreatment device mount positioned within the cabinet for mounting the diesel exhaust aftertreatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust aftertreatment device during cleaning. The pulse cleaner can be equipped with features such as an exhaust aftertreatment device core temperature sensor, an air flow concentrator or an air swirling vane. The pulse cleaner can also include adapters for providing system compatibility with different styles of exhaust aftertreatment devices.

Apparatus for cleaning exhaust aftertreatment devices and methods

The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust treatment device. The pulse cleaner includes a cabinet, a diesel exhaust treatment device mount positioned within the cabinet for mounting the diesel exhaust treatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust treatment device during cleaning. The pulse cleaner also includes a pulse generator for generating pulses that are each directed at a majority of a face of the diesel exhaust treatment device when the diesel exhaust treatment device is mounted at the diesel exhaust treatment device mount. The pulse generator includes a pressure tank for accumulating pressurized air, and a valve arrangement that flushes the pressurized air from the tank. A pulse of air for cleaning the diesel exhaust treatment device is generated each time the tank is flushed.

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

Method of making a fluted filter media for air filter

An exhaust filter having a pleated filter media mounted between end caps is disclosed herein. The filter has a construction suitable for high temperature environments such as engine exhaust systems.

Exhaust filter

A device for sealing a lap joint between two conduits is disclosed herein. The device includes a band clamp. The device also includes a packet or other type of container secured to the band clamp. The packet contains a sealant which moves or flows to void areas between the clamp and the conduits during clamp tightening to provide a more fluid tight seal about the lap joint.

Sealing gasket for a clamp

An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic converter arrangement positioned within the muffler arrangement between the exhaust inlet and exhaust outlet. During operation, the exhaust flow is directed both through the muffler arrangement and the catalytic converter arrangement, to advantage.

Muffler with catalytic converter arrangement; and method

A pipe clamp including a strap adapted to surround a pipe. The strap includes first and second opposing ends separated by a gap. The clamp also includes a fastener that extends across the gap for tightening or loosening the clamp by narrowing or widening the gap between the first and second opposing ends of the strap. The first opposing end includes at least one projection and the second opposing end defines at least one recess for receiving the projection when the clamp is tightened.

Strap clamp

Growing community of inventors

Apple Valley, MN, United States of America

Wayne M Wagner