Pre-Aftertreatment Combustion Signal Analysis as a Diagnostic Geometry

A J1939-based diagnostic geometry that reads combustion-side degradation upstream of the aftertreatment — detecting engine problems early from data the truck already broadcasts, with no new sensors required.

The full analysis is available for download below. The method is patent-pending.

Published by Starboard Research — a segment of Starboard Investment, LLC. Patents US 10,718,284 B2 and IN 553,370.