Throttle valve housing formed of molded plastic

US5575256A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus-Jurgen Peters · Marbach am Neckar, DE
• Karl Gmelin · Flein, DE
• Matthias Entenmann · Bietigheim-Bissingen, DE
• Peter Ropertz · Oberriexingen, DE
• Herbert Pollmann · Eisenerz, AT
• Wolfgang Hodulik · Eisenerz, AT

Key dates

• Filing date: Apr 7, 1995
• Grant date: Nov 19, 1996
• Expiry date: Apr 7, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05C2225/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A throttle-valve housing of plastic has a metal insert which achieves dimensional stability in the region of the throttle valve. The throttle-valve housing is formed of plastic with a cavity bounded by an inner wall surface. In the wall there is arranged a metal insert which is covered on all sides by the plastic material and effects a stabilization of the plastic material, so that distorting, shrinking or the like is prevented and dimensional accuracy of the inner wall surface is ensured. The novel throttle-valve housing is simple to produce and has a high dimensional stability in spite of being formed from plastic material. The throttle-valve housing is suitable for internal-combustion engines of motor vehicles.