The invention provides a method of diagnosing a lubricated portion which can precisely measure a metal concentration in a lubricating oil and can diagnose accurately a state of the lubricated portion on the basis of a value of measurement. In accordance with the present diagnosing method, a lubricating...http://www.google.de/patents/US7259017?utm_source=gb-gplus-sharePatent US7259017 - Method of diagnosing lubricated portion and system of diagnosing lubricated portion
