Patent · US Expired

Throttle valve connection piece

US5209211A · kind A · utility

9Cited by

2References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Reiner Kopp · Aachen, DE
Albrecht Baessler · Ditzingen, DE
Peter Ropertz · Oberriexingen, DE

Key dates

Filing date	Jun 22, 1992
Grant date	May 11, 1993
Priority date	—
Expiry date	Jun 22, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S261/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Heating devices are used to prevent icing and deposition of fuel on the throttle valve under adverse operating conditions; these device comprise electrical resistance hot wires applied to the surface of the throttle valve, yet these wires lead to undesired turbulence in the fuel-air mixture flow. As the length of time in operation increases, the efficiency of the hot wires is lessened by corrosion of their surface. These disadvantages are avoided by integrating the heating device with the component to be heated. To this end, the heating device is disposed in an axial bore of the throttle valve shaft. This arrangement is used especially with mixture-compressing internal combustion engines equipped with carburetors or central injection systems.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.