System and method for adjusting on-time calibration of a fuel injector in internal combustion engine

Patent metadata

Field	Value
Publication number	US-9850872-B2
Application number	US-201414460669-A
Country	US
Kind code	B2
Filing date	Aug 15, 2014
Priority date	Aug 20, 2013
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

The disclosure provides a system and method for determining an amount of fuel injected or delivered by a single fuel injector in an internal combustion engine by generating one fuel injection event after the engine has stopped operating. The fuel delivered is statistically analyzed in comparison with a commanded fuel delivery amounts to determine the suitability of fuel injector on-time calibration for the analyzed fuel injector. If the fuel delivered deviates from the commanded amount of fuel delivery by a predetermined value, the fuel injector on-time calibration for the analyzed fuel injector is changed.

First claim

We claim:

1. A method of calibrating fuel injectors of an engine, comprising:
providing a control system including an engine shutdown sensor, an accumulator pressure sensor, and at least one processor having a non-transitory computer-readable medium configured to receive a plurality of instructions;
receiving, by the processor, an engine shutdown value indicating that the engine is shut down from the engine shutdown sensor;
providing a fuel injection value, from the processor…

Assignees

• Cummins Inc

Inventors

• Ruth Michael J
• Cunningham Michael J

Classifications

• F02D2200/0602

  Mechanical Engineering · mapped topic

• F02D41/345

  Mechanical Engineering · mapped topic

• F02M63/0225

  Mechanical Engineering · mapped topic

• F02D41/042

  Mechanical Engineering · mapped topic

• F02D41/32

  Mechanical Engineering · mapped topic