Patent · US Active

Method of controlling a fuel injector

US11352971B2 · kind B2 · utility

0Cited by

1References

2Claims

0Family size

Assignee

DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA · LU

Inventors

Peter Baur · Monsheim, DE
Volker Heise · Trier, DE

Key dates

Filing date	Apr 12, 2019
Grant date	Jun 7, 2022
Priority date	—
Expiry date	Apr 12, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method is provided for controlling a solenoid actuated fuel injector having a solenoid actuator which moves a pintle and needle arrangement such that the needle moves away from a valve seat to an open position and also includes circuitry which applies chopped hysteresis control subsequent to an energisation phase. The method includes a) obtaining a signal of the current or voltage across the solenoid; b) analyzing the voltage or current to detect a chopped hysteresis pulse; c) determining the time point of the end of said chopped hysteresis pulse; and d) applying a braking pulse to the solenoid, the timing of which is dependent on the results of step c).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.