System and method for triggering an inductive consumer

US5383086A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Juergen Wietelmann · Ditzingen, DE
• Thomas Rueping · Lenningen, DE
• Norbert Mueller · Ostseebad Nienhagen, DE
• Wolfgang Duehlmeyer · Schwieberdingen, DE

Key dates

• Filing date: Dec 2, 1992
• Grant date: Jan 17, 1995
• Expiry date: Dec 2, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/2058
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a system for triggering an inductive consumer, particularly a consumer for controlling an internal combustion engine, the consumer is coupled via a circuit element to a voltage source. A control means triggers the circuit element in the switching mode for a preselected ON duration. Furthermore, means are provided for measuring the current flowing through the inductive consumer. To measure an actual current value, a first current value is measured shortly after the closing operation, and a second current value is measured immediately before the opening operation.