Multi-spark ignition system for internal combustion engines

US4162665A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gunter Grather · Pinache, DE
• Friedrich Rabus · Schwieberdingen, DE

Key dates

• Filing date: May 23, 1977
• Grant date: Jul 31, 1979
• Expiry date: May 23, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02P15/10
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

To generate a plurality of spark pulses for a multi-spark breakdown for each ignition event for ignition of a combustible mixture in an internal combustion engine, while providing for positive generation of the first spark at a predetermined time instant, a time delay circuit is connected to control a frequency generator for generation of a plurality of spark pulses, the first spark pulse, however, being controlled through a differentiating network, for example an R/C network, for positive generation of the first pulse.