Cummins Inc.

Cummins Ip, Inc.

Richard S Fox

David J Stroh

Govindarajan Kothandaraman

Robert J Thomas

Zachary Schwab

Craig M Calmer

Eric L Hagen

Nkemjika Ibekwe

Malcolm L Smith

John D Acton

Glenda R Henry

Charlie D Wilson

Rohit Zope

Steve Ferree

The present disclosure relates to a system for managing engine output that includes a machine manager module and a combustion module. In one embodiment, the combustion module includes a slow response pathway and a fast response pathway. The slow response pathway includes managing air and fuel actuators and the fast response pathway includes managing spark timing. According to one embodiment, managing spark timing comprises bringing a spark actuator to the middle of a spark timing range for bi-directional control and involves sacrificing engine efficiency for engine responsiveness. Further, the fast response pathway may be selectively enabled based upon an optimization index.

Arbitration strategy for slow response and fast response torque requests

Systems and methods for monitoring health of one or more subsystems of a vehicle system are disclosed. At least one sensor can be operatively coupled to a vehicle subsystem having an operational signature and a control system is coupled to the at least one sensor. Using information provided by the at least one sensor, the control system is structured to generate a reference signature of the subsystem during a learning phase and an operational signature of the subsystem subsequent to the learning phase. Systems and methods for identifying the particular subsystem exhibiting degraded performance are also disclosed.

Health monitoring systems and techniques for vehicle systems

An algorithm for detecting a fault in an ECM output signal by determining a status of the output signal, incrementing an error timer and a retry timer when the status is abnormal, incrementing a retry counter when the retry timer reaches a maximum retry time, and reporting an intermittent fault if the retry counter reaches a retry limit before the error timer reaches an error timer maximum.

Method and system for detecting faults in an electronic engine control module

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Columbus, IN, United States of America

Richard S Fox