Caterpillar Inc.

Perkins Engines Company Limited

Drew Douglas Wackerlin

Jason Kenneth Bloms

Brian Mintah

Timothy Joe Felty

Colin Peter Garner

William Elliott Moser

Graham Hargrave

Darin James McCoy

Susannah Elizabeth Danby

Benjamin Reid

Manolis Gavaises

Purvarag S Shah

Nate B Keller

Emmanouil Giannadakis

Cathy Youngmi Choi

A system including a nitrogen oxide sensor and a controller is provided. The nitrogen oxide sensor is configured to generate a first signal indicative of nitrogen oxides content in an exhaust gas. The controller is communicably coupled to the nitrogen oxide sensor. The controller configured to receive the first signal indicative of nitrogen oxides content in the exhaust gas. The controller is also configured to receive a second signal corresponding to an operational parameter of a power source. Further, the controller is configured to compare a derivative of the first signal with a derivative of the second signal. The controller is configured to trigger an error counter when an absolute value of the compared derivative crosses a predetermined threshold. Thereafter, the controller is configured to determine a condition of the nitrogen oxide sensor based on a count of the error counter in a predetermined period of time.

Diagnostic system and method for nitrogen oxide sensor

An exhaust control system for use with a combustion engine is disclosed. The system may have an exhaust passage, an exhaust sensor located within the exhaust passage and configured to generate a first signal indicative of an exhaust parameter, and an operational sensor associated with the combustion engine and configured to generate a second signal indicative of an operational parameter. The system may have a controller associated with the combustion engine, the exhaust sensor, and the operational sensor. The controller may be configured to detect a change in the operational parameter based on the second signal and to detect a change in the exhaust parameter based on the first signal. The controller may measure an elapsed time between detection of the change in the operational parameter and the change in the exhaust parameter, and determine a placement-related parameter of the exhaust sensor based on the elapsed time.

Exhaust system having sensor placement detection

The present disclosure is directed towards a clamping assembly for compressing a plurality of optical plates of a high pressure cavitation system. The clamping assembly may include a mounting frame and a housing coupled to the mounting frame. The clamping assembly may further include a holder distal the housing, the holder having the plurality of optical plates disposed therein. The clamping assembly further including a controllable clamping mechanism operably coupled to a top of the housing, the controllable clamping mechanism applying an axial force to the plurality of optical plate.

High pressure cavitation system

Growing community of inventors

Metamora, IL, United States of America

Drew Douglas Wackerlin