Caterpillar Inc.

Julia H Jenks

Joshua Lynn Ratts

Shawn M Damm

Kevin J Sergott

Karthik Jayasankaran

Shivangi Wagle

Prasanna Mohan Ballal

Kosha B Patel

A computer-implemented system for monitoring the performance of an aftertreatment component in an exhaust system of a power generation system utilizes a remaining useful life (RUL) algorithm to predict its remaining operational life until it must be regenerated by a desulfation process. The RUL algorithm can utilize values such as a current sulfur accumulation value representing the quantity of sulfur currently accumulated in the aftertreatment component, a sulfur accumulation threshold representing the quantity sulfur the aftertreatment component can operationally retain, and an instantaneous sulfur accumulation rate of change representing the current rate at which the aftertreatment component retains sulfur.

Desulfation of aftertreatment component

Systems and methods for reverse flow detection for a dual fuel engine are disclosed. The engine may include an intake manifold, a liquid fuel supply line and a gaseous fuel supply line, the gaseous fuel supply line including a gaseous fuel supply and a gaseous fuel rail. The method may include: receiving sensed values of gaseous fuel supply pressure, intake manifold pressure, and gaseous fuel rail pressure; determining a threshold value based on the sensed value of gaseous fuel supply pressure; determining a reverse flow in the gaseous fuel supply line based on the sensed values of gaseous fuel supply pressure and gas rail pressure and the determined threshold value; and outputting an indication of reverse flow in response to the determination of reverse flow.

Systems and methods for reverse flow detect

An internal combustion engine includes an inline turbocharger and at least a first inline turbocharger that has a first turbine air valve, and a first inline compressor that has a first compressor air valve. A control valve is responsive to commands from an electronic controller to move the air valves between open and closed positions. The electronic controller monitors operating parameters of the engine to diagnose a fault. determine whether an air valve is stuck open or closed, and adjust a priority schedule for activating or deactivating the first inline turbocharger based on the type of fault.

Sequential turbocharger diagnostic system and method

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Edwards, IL, United States of America

Julia H Jenks