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.