Patent · US Active

Method for detecting defects in a piston for an internal combustion engine

US10031046B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Mahle International GmbH · DE

Inventors

Michel Fritz · Bad Sachsa, DE
Gerhard Mook · Magdeburg, DE
Ioannis Papadopoulos · Boxborough, US
Holger Schnell · Leinfelden, DE

Key dates

Filing date	Feb 19, 2016
Grant date	Jul 24, 2018
Priority date	—
Expiry date	Jul 25, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/902
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for detecting defects in a piston for an internal combustion engine may include providing the piston in a measurement arrangement that includes a measurement probe having a first electrical coil element for generating an electromagnetic alternating field and a second electrical coil element for detecting an electromagnetic alternating field. The method may also include moving the measurement probe over a piston surface of the piston, and providing an electrical alternating current in the first coil element to generate an electromagnetic alternating field that interacts with a material of the piston in the region under the piston surface. The method may further include evaluating an electrical alternating voltage induced in the second coil element by the electromagnetic alternating field after interaction with the material of the piston.

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