US 2020/0003173 A1 · DYNAMIC IGNITION ENERGY CONTROL

Abstract

A method for controlling the ignition energy of a sparkplug electrode of an ignition system comprises: providing a base current (Ibase) and a base duration (Dbase) which corresponds to the current and duration, respectively, of a physical model at a fixed engine operating point; multiplying the base current (Ibase) and the base duration (Dbase) with a sparkplug state indicator (SSI) based correction factor and with an engine operating state (EOS) based factor for achieving a final global current (Iglo) and a final global duration (Dglo), respectively; and communicating the final global current (Iglo) and the final global duration (Dglo) to a control unit for controlling the ignition energy and ignition duration of the sparkplug electrode. Further executing real-time energy control based on misfire flag status and, in the end, making sure that the optimum energy is into application by realizing optimum energy tests.

Claims11

Dependent claims

A method for controlling the ignition energy of a sparkplug of an ignition system, the method comprising:

providing a base current (Ibase) and a base duration (Dbase) which corresponds to the primary current and duration, respectively, of a physical model at a fixed engine operating point;
multiplying the base current (Ibase) and the base duration (Dbase) with a sparkplug state indicator (SSI) based correction factor and with an engine operating state (EOS) based factor for achieving a final global current (Iglo) and a final global duration (Dglo), respectively;
and
communicating the final global current (Iglo) and the final global duration (Dglo) to a control unit for controlling the ignition energy and ignition duration of the sparkplug electrode.

1 more element

Dependencies are inferred from the claim text.

Dynamic ignition energy control

Life of this patent

Dynamic ignition energy control

Life of this patent

Abstract

Claims11