Cummins Filtration Ip, Inc.

Nelson Industries, Inc.

Zhili Gerald Liu

Thaddeus Alan Swor

James Alan Debilzen

Casey Lee Severance

Jerald J Moy

Tadeusz Jaroszczyk

Joseph Charles Lincoln

Denise Christine Ford

A residence time chamber and sampling apparatus for use in a system for sampling emission products from an emissions source, for example combustion engines including gasoline, diesel and natural gas engines, for subsequent measurement and analysis of the emission products. The results of the analysis can be used to formulate decisions on changes in engine design strategy, and can be used to determine the effectiveness of aftertreatment systems on the emissions source. The residence time chamber includes a plurality of isoaxial sampling probes, with a plurality of sampling trains connected to the sampling probes to take simultaneous representative emission samples for subsequent analysis. The residence time chamber minimizes many noise factors which can affect the accuracy of the test system, by applying isokinetic sampling and by reducing the interaction of the sampling gas and the particulate matter with the sampling probe inlets and with the various surfaces of the residence time chamber.

Residence time chamber and sampling apparatus

A system for sampling emission products from an emissions source, for example combustion engines including gasoline, diesel and natural gas engines, for subsequent measurement and analysis of the emission products. The system includes a dilution apparatus, a residence time chamber, a plurality of sampling probes within the residence time chamber, and a plurality of sampling trains connected to the sampling probes to take simultaneous representative emission samples for subsequent analysis. The system has particular use in quantifying chemical and toxic trace species from emissions sources. The results of the analysis can be used to formulate decisions on changes in engine design strategy, and can be used to determine the effectiveness of aftertreatment systems on the emissions source.

Source dilution sampling system for emissions analysis

A thermophoresis-resistant dilution apparatus for dilution of gas from an emission source, such as a combustion engine, for example a gasoline, diesel or natural gas engine. The apparatus is designed to simulate atmospheric dilution, mixing and cooling processes, enabling sampled emission gas and dilution air to thoroughly mix and cool to ambient temperature, allowing some volatile and semi-volatile gas-phase organics to nucleate, condense and coagulate to their usual aerosol phase. The apparatus is designed to resist thermophorectic forces acting on the particulate matter in the sampled emission gas, thereby preventing particulate matter losses. In addition, the apparatus evenly distributes the dilution air into the sampled gas for improved mixing.

Thermophoresis-resistant gas dilution apparatus for use in emissions analysis

A corrugated axial filter (,) has a plurality of flow channels (,) extending axially from the upstream dirty frontside (,) of the filter to the downstream clean backside (,) of the filter. Each channel has an upstream opening (,) at the upstream dirty frontside and has top and bottom walls (,and,) and right and left sidewalls (,and,) extending from the opening rearwardly toward the downstream clean backside. The right and left sidewalls taper towards each other as they extend rearwardly to define a triangular shaped flow channel. Right and left sidewalls of adjacent flow channels are a single continuous sheet of filter material (,) in a zig-zag pattern (,) with a plurality of fold lines including a first set of fold lines (,) at the upstream dirty frontside and a second set of fold lines (,) at the downstream clean backside.

Growing community of inventors

Madison, WI, United States of America

Zhili Gerald Liu