Donaldson Comapny, Inc.

Ervin P Fuchs

Gary Ray Gillingham

Fred H Wahlquist

Eugene D Wilson

Thomas G Miller

Thomas Richard Olson

William Krisko

Robert Widerski

Stan M Koehler

Charles Jensen

Winston E Olson

Wayne M Wagner

Edward A Steinbrueck

Bruce B Hoppenstedt

Robert Paul Widerski

Pulse jet air cleaner systems, components and methods are described. The features relate to air cleaner housings that include a cartridge receiving section. Features described relate to a possible two-stage construction, a possible pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.

Pulse jet air cleaner systems; components; and, methods

Pulse jet air cleaner systems, components, and, methods

Pulse jet air cleaner systems components and methods are described. The features relate to air cleaner housings that include a cartridge receiving section. Features described relate to a possible two-stage construction, a pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner; evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.

A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.

Multistage air cleaner including pulse cleaning system

Pulse jet air cleaner system; components; and, methods

Diesel engine exhaust filter system for off-road vehicles. The system has a trap device and controlling mechanism on the vehicle. An electrical power source and a combustion air source are off-board. The controlling mechanism monitors backpressure to determine when regeneration is required. The vehicle is parked at a regeneration station for connection to the air source and power source for regeneration, which is then controlled by the controlling mechanism on-board.

Diesel engine exhaust regenerable filter system

An exhaust filter backpressure indicator includes a sensor for measuring the backpressure and the exhaust system. The sensor sends a signal which is processed for indicating that an exhaust filter element is filled. The indicator includes a timer so that a signal corresponding to pressure must be maintained for a predetermined period of time before the filled element is indicated. The apparatus may also include high and low frequency discriminators to process signals within predetermined signal frequency ranges corresponding to engine operating speeds. Therefore, depending on the operation of the vehicle, the element will be indicated as being filled at either high engine speed operation or low engine speed operation.

Exhaust filter backpressure indicator

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Farmington, MN, United States of America

Ervin P Fuchs