Apparatus for governing the idling RPM of an internal combustion engine

US5690070A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Friedrich Wendel · Rutesheim, DE
• Johannes Meiwes · Markgröningen, DE
• Albert Gerhard · Tamm, DE
• Uwe Hammer · Hemmingen, DE
• Dieter Dick · Rochlitz, DE
• Robert Torno · Bietigheim-Bissingen, DE

Key dates

• Filing date: Jun 28, 1996
• Grant date: Nov 25, 1997
• Expiry date: Jun 28, 2016

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2003/067
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for governing an idling rpm of an internal combustion engine by controlling a quantity of operating fluid that can be supplied to the engine from an operating fluid source via at least two flow lines. A first valve opening cross section at a first valve opening is controlled by a first valve closing member, and a second valve opening cross section and a second valve opening is controlled by a second valve closing member. The first and second valve closing members are adjustable by an adjusting drive in such a manner that the first valve opening and the second valve opening are disposed parallel to one another between the operating medium source and the intake conduit of the engine. The valve closing members are coupled in such a way that upon their actuation, the first valve closing member always uncovers a flow cross section at the first valve opening first, and only then does the second valve closing member uncover a flow cross section at the second valve opening.