| CPC F02M 26/49 (2016.02) [F02M 26/48 (2016.02)] | 21 Claims |
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1. A method for non-intrusive response time evaluation of a component, unit or system of a vehicle comprising at least one control unit and at least one sensor for measuring an actual operation value of the component, unit, or system, the method comprising:
repeatedly obtaining information in the control unit regarding a set operation value and an actual operation value of the component, unit, or system;
repeatedly evaluating if a difference between the set operation value and the actual operation value is exceeding a predefined minimum difference;
in response to determining that the difference is exceeding the predefined minimum difference, measuring a response time from a time when the predefined minimum difference was exceeded until a time when a predefined change of the actual value is achieved, wherein the measuring of the response time only remains active if the set operation value is continuously greater than the actual value at positive measurement or continuously smaller than the actual value at negative measurement; and
in response to determining that the measured response time is longer than the predefined response time, generating a fault signal indicative of a fault of the component, unit or system.
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