Device and method for regulating the energy supply for ignition in an internal combustion engine

US6763815B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Juergen Gerhardt · Oberriexingen, DE
• Martin Haussmann · Sachsenheim, DE

Key dates

• Filing date: Dec 27, 2002
• Grant date: Jul 20, 2004
• Expiry date: Dec 27, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02P3/051
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A device for regulating the energy supply for the ignition of an internal combustion engine including an ignition coil and a central control unit, the ignition coil including a primary winding and an ignition power module connected to the primary winding. The central control unit ascertains a time difference between the beginning of current flow through the primary winding and the reaching of a first threshold value of the primary current, and in the light of the time difference, the central control unit determines an additional power loss of the ignition power module and/or active energy reduction, caused by interturn short circuits in the primary winding. When the additional power loss of the ignition power module exceeds a power loss threshold value, the ignition power module is switched off.