Patent · US Active

Method for determining a scanning ratio for a valve for a camshaft adjuster

US8360020B2 · kind B2 · utility

0Cited by

4References

2Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Jochen Auchter · Weisendorf, DE
Marco Schmitt · Kulmbach, DE

Key dates

Filing date	Nov 24, 2007
Grant date	Jan 29, 2013
Priority date	—
Expiry date	Mar 3, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2820/01
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for determining a scanning ratio for a characteristic curve for the operation of an electromechanical valve for a camshaft adjuster in which an ambient temperature and a relative motion of a camshaft are determined at a reference point. In accordance with a specific ambient temperature and other operating conditions such as e.g., engine rpm, a holding scanning ratio is determined. Subsequently, at least one additional scanning ratio of an operating state is determined for a scanning ratio characteristic for the valve.

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