Apparatus for controlling the idling speed of an internal combustion engine

US6109237A · kind A · utility

Assignee

• ISAD Electronic Systems GmbH & Co., KG · DE

Inventors

• Thomas Pels · Achern, DE
• Klaus Revermann · Schwerinsdorf, DE
• Klaus-Peter Zeyen · Recklinghausen, DE

Key dates

• Filing date: Aug 4, 1999
• Grant date: Aug 29, 2000
• Expiry date: Aug 4, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/64
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An apparatus for controlling an idling speed of an internal combustion engine is disclosed. The apparatus includes an electric machine operatively coupled to the internal combustion engine for applying a braking torque to the internal combustion engine to reduce the idling speed and for applying a driving torque to the internal combustion engine to increase the idling speed. It also includes a controller for controlling the electric machine. The controller is responsive to a load change to control the electric machine to apply one of a braking torque and a driving torque to the internal combustion engine to substantially maintain the idling speed at a predefined level.