Patent ID: 11920535
Assignee: CUMMINS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 10:
11. A method comprising:
operating a system including a reciprocating piston engine configured to output torque to drive a load, an engine speed sensor operatively coupled with the engine and configured to output an engine speed signal, and an electronic control system in communication with the engine speed sensor;
operating the electronic control system during operation of the engine to perform the acts of: receiving the engine speed signal, determining whether the engine is operating in one of a steady state condition, a transient condition, and a high-load and high-speed condition, and one of: (a) if the engine is operating in the steady condition detecting a misfire of the engine in response to the engine speed signal, (b) if the engine is operating in the transient condition determining an engine acceleration in response to the engine speed signal and detecting a misfire of the engine in response to the engine acceleration, and (c) if the engine is operating in the high-load and high-speed condition detecting a misfire of the engine in response to an exhaust manifold pressure-based diagnostic.