Caterpillar Inc.

Shawn Richard Herold

Jason Hudgens

Theron James Cassidy

James Joshua Driscoll

Matthew Fahrenkrug

Arvind Jujare

Bogdan Balea

Dustin Irvin Landwehr

Dave Ahlman

Raghuram Gaikwad

Kevin Edwin Malone

Govind Swaroop

Scott Frederick Meyer

Sachin S Deshmukh

A base filter for a diesel exhaust fluid (DEF) filter of a header assembly in a fluid reservoir is disclosed may include first and second semi-cylindrical holder portions having a semi-cylindrical walls concluding at abutment surfaces that face and engage when the base filter is assembled. The semi-cylindrical holder portions have one or more mounting tabs extending inward from inner surfaces of the semi-cylindrical walls. The header assembly may include a header with a cylindrical header boss having mounting recess defined therein. The mounting tabs may be circumferentially spaced about the semi-cylindrical walls to align with and be inserted into the mounting recesses of the header boss the base filter is assembled on the cylindrical header boss. Fasteners may be inserted through fastener bosses of the semi-cylindrical holder portions and into fastener bores of the header boss to hold the semi-cylindrical holder portions together and on the header.

Integrated base filter for a DEF manifold

A fluid system for a machine includes a tube assembly and a sock filter enveloping the tube assembly. The fluid system also includes a filter protector adjacent to a fastener in the tube assembly and including a first connector fitted with a first tube, a second connector fitted with a second tube, and a wall that arcs between the first connector and the second connector and limits contact between a sock filter enveloping the tube assembly and the fastener.

Machine fluid system having filter protector for sock filter in manifold tube assembly

An inlet filter is disclosed for use with a reductant tank having a fill spout. The inlet filter may have a generally cylindrical base portion with an open top end and an open bottom end and configured for mounting inside the fill spout. The inlet filter may also have a mesh bag with a top connected to the generally cylindrical base portion, a folded bottom, and open side edges. The inlet filter may further have a bag carrier configured to close the open side edges.

Fluid reservoir having inlet filtering

Accurate measurement of exhaust gas compounds is necessary for correct operation of exhaust treatment systems, such as Selective Catalytic Reduction (SCR) units used in diesel engines. However, accurate sensor readings assume an even distribution of compounds in an exhaust stream in order to use a sampled measurement to be extrapolated to the compound concentrations in the full stream. A structure placed in an exhaust passage downstream of an SCR reaction unit causes turbulence in the exhaust gas while developing a minimal backpressure. This turbulence helps create a more uniform distribution of compounds in the exhaust. As a result, an exhaust gas sensor gives more accurate readings even when the sensor is placed in relatively close proximity to an output of the SCR system.

Selective catalytic reduction outlet mixing device

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East Peoria, IL, United States of America

Shawn Richard Herold