公开(公告)号：US11920535B2

公开(公告)日：2024-03-05

申请号：US17819704

申请日：2022-08-15

Applicant: Cummins Inc.

Inventor： Pradheepram Ottikkutti ,  Yusuf Poonawala ,  Shailesh Nair ,  Pravin A. Suryawanshi

IPC: F02D41/14 ,  F02D41/00 ,  F02D41/22

CPC classification number: F02D41/1498 ,  F02D41/0097 ,  F02D41/22 ,  F02D2200/101 ,  F02D2200/1012

Abstract: A system includes a reciprocating piston engine configured to output torque to drive a load. The system includes an engine speed sensor operatively coupled with the engine and configured to output an engine speed signal. The system includes an electronic control system operatively coupled with the powertrain. The electronic control system is configured to determine an engine acceleration in response to the engine speed signal, and detect a misfire of the engine in response to the engine acceleration.

公开(公告)号：US20240200504A1

公开(公告)日：2024-06-20

申请号：US17909933

申请日：2021-05-06

Applicant: Cummins Inc.

Inventor： Mayur H. Borate ,  Srinivas Kumar Mulukutia ,  Shailesh Nair ,  David Michael Carey ,  Syed Shah Jalal

IPC: F02D41/22 ,  F02D41/00 ,  F02D41/40

CPC classification number: F02D41/221 ,  F02D41/009 ,  F02D41/401 ,  F02D2041/224 ,  F02D2041/228 ,  F02D2200/0602 ,  F02D2200/0618

Abstract: At least some embodiments of present disclosure direct to a fuel injection timing drift detection and/or compensation system. In some cases, the system collects or receives a series of fuel pressure data measured by one or more fuel pressure sensors. The system is configured to receive an indication of fuel flow cutout and a start-of-injection command signal. The system calculates a set of pressure drops using the series of fuel pressure data and identifies a selected pressure drop greater than a predetermined threshold to determine a measured start-of-injection timing based on the selected pressure drop. The system is further configured to evaluate whether a fuel injection drifting occurs based on received start-of-injection command signal and the measured start-of-injection timing. In some cases, the fuel injection drifting is used to either compensate fuel injection timing or raise a flag indicating the drifting.

公开(公告)号：US12146449B2

公开(公告)日：2024-11-19

申请号：US17909933

申请日：2021-05-06

Applicant: Cummins Inc.

Inventor： Mayur H. Borate ,  Srinivas Kumar Mulukutla ,  Shailesh Nair ,  David Michael Carey ,  Syed Shah Jalal

IPC: F02D41/22 ,  F02D41/00 ,  F02D41/40

Abstract: At least some embodiments of present disclosure direct to a fuel injection timing drift detection and/or compensation system. In some cases, the system collects or receives a series of fuel pressure data measured by one or more fuel pressure sensors. The system is configured to receive an indication of fuel flow cutout and a start-of-injection command signal. The system calculates a set of pressure drops using the series of fuel pressure data and identifies a selected pressure drop greater than a predetermined threshold to determine a measured start-of-injection timing based on the selected pressure drop. The system is further configured to evaluate whether a fuel injection drifting occurs based on received start-of-injection command signal and the measured start-of-injection timing. In some cases, the fuel injection drifting is used to either compensate fuel injection timing or raise a flag indicating the drifting.