Patent · US Expired

Method of controlling a switching flap, and a switching-flap actuating unit

US7177757B2 · kind B2 · utility

1Cited by

1References

14Claims

0Family size

Assignee

PIERBURG GMBH · DE

Inventors

Norbert Ludwig · Bruggen, DE
Frank Buerger · Lehrte, DE
Harmut Witte · Neuss, DE

Key dates

Filing date	May 5, 2005
Grant date	Feb 13, 2007
Priority date	—
Expiry date	May 5, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a method for controlling a switching flap (10) arranged in an intake pipe connected with an internal-combustion engine the switching flap (10) is rotated with the aid of a switching-flap shaft (12) connected with an electromotor (18). With the aid of a position-detecting device (22,26;24,26) an end position of the switching flap (10) is detected. Subsequently, a rotation force is continued to be applied to the shaft (12) to hold the switching flap (10) in the end position. For detecting a breakage of the switching-flap shaft (12), an error message is generated when the switching-flap shaft (12) continues to rotate beyond the end position.

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