Patent · US Active

Ignition system

US9399979B2 · kind B2 · utility

7Cited by

9References

18Claims

0Family size

Assignee

DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA · LU

Inventors

Volker Heise · Trier, DE
Marco Loenarz · Esch-sur-Alzette, LU
Frank Lorenz · Trier, DE

Key dates

Filing date	Mar 18, 2013
Grant date	Jul 26, 2016
Priority date	—
Expiry date	Aug 2, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P2017/121
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An ignition system for an internal combustion engine includes an ignition transformer with two primary windings. The ignition system is designed to generate, for a given ignition event, a unipolar current through the secondary winding by way of a control circuit that is configured to first energize and deenergize the first primary winding to establish a first electrical arc across the spark-plug electrodes and, when the current in the secondary winding reaches, or drops below, a current threshold, repeatedly energizes and deenergizes the second primary winding to establish a plurality of second current pulses across the electrodes in order to maintain the burn phase.

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