Method for determining at least the position of a movable part of a drive unit such as an internal combustion engine or the similar
AssigneeThyssenkrupp Krause GmbH
InventorsDetlef Klemmer, Andreas Huck
Life of this patent
Estimating the term…
Abstract
A method for determining at least the position of a moving part of the drive assembly, in which the part is illuminated or exposed to light and thereby the passage of light between the moving part and a part which corresponds thereto is determined. The passage of light changes or can even be briefly interrupted during the movement of the part. As a result, it is possible to obtain reliable information about the instantaneous position of the respective part. The method can be used more widely than the known capacitive determination of the position of a moving part and is, in particular, independent of the material of the part.
Claims36
A method for determining at least the position of a moving part of a drive assembly during testing or monitoring the drive assembly, wherein position-related values are determined during the movement of the respective part, comprising the steps of:
- (a) illuminating or exposing the part to light;
- and
- (b) determining the passage of light or an interruption of the passage of light between the moving part and a part corresponding thereto with at least one light-sensitive measuring element,
- wherein the drive assembly is an internal combustion engine (10) having at least one valve (10) and the position of the at least one valve (10) is determined at least in a respective closed position, and
- wherein the light is fed to the respective valve (10) from a side (21) which points to a valve stem (20) of the respective valve (10),
- whereby the position of the part is determined by incidence of light on the at least one light-sensitive measuring element.
A method for determining at least the position of a moving part of a drive assembly during testing or monitoring the drive assembly, wherein position-related values are determined during the movement of the respective part, comprising the steps of:
- (a) illuminating or exposing the part to light;
- and
- (b) determining the passage of light or an interruption of the passage of light between the moving part and a part corresponding thereto with at least one light-sensitive measuring element,
- wherein the drive assembly is an internal combustion engine (10) having at least one valve and the position of the at least one valve (10) is determined at least in a respective closed position, and
- wherein the passage of light or the interruption, thereof is determined when the at least one valve (10) is respectively closed, and on the basis of a piston-end cylinder space (13),
- whereby the position of the part is determined by incidence of light on the at least one light-sensitive measuring element.
Dependencies are inferred from the claim text.