High-voltage ignition system to generate a spark for an internal combustion engine, and method to generate the spark energy

US4181112A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gunter Grather · Pinache, DE
• Josef Wahl
• Friedrich Rabus · Schwieberdingen, DE
• Bert Wurst · Asperg, DE
• Karl-Heinz Adler · Leonberg, DE

Key dates

• Filing date: Mar 11, 1977
• Grant date: Jan 1, 1980
• Expiry date: Mar 11, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02P3/0884
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Sequentially generated charge pulses are applied to the spark gap through a diode which prevents back-flow of energy applied to the spark gap, the capacity of the ignition cable, or a capacitor, and of the spark gap causing a build-up of charge accumulation as a result of the sequentially applied charges, until the gap breaks down; the breakdown voltage, therefore, will be determined by the conditions of the gap. The pulses are generated at a pulse repetition rate which is high with respect to the rate of generation of spark impulses through a circuit in which the respective capacities and winding ratios and inductances of the ignition coil and the cabling are controlled so that the pauses between sequentially generated spark pulses and the timing of the spark pulses can be matched to the system parameters.