Gm Global Technolgoy Operations, Inc.

Bayerische Motoren Werke Aktiengesellschaft

Daimler Ag

Chrysler Group LLC

Wei Ren

Wei D Wang

William R Cawthorne

Aniket P Kothari

Harry J Bauer

Nicholas Kokotovich

Jeffrey David

Bo Zhang

A vehicle includes electrical components, current sensors which determine current flowing through the electrical components, and a control system. The control system calculates and records error index values over an interval using the currents. The control system increments a first counter with every sample in the series, increments a second counter whenever a given error index value exceeds a calibrated high threshold, and decrements the second counter whenever the given error index value is less than a calibrated low threshold. A control action, e.g., recording a PASS or FAIL value, executes when either the absolute value of the second counter or the present value of the first counter reaches a corresponding limit or threshold. A method enhances the robustness of a hybrid vehicle torque security diagnostic using the control system. The vehicle and method use a signed X of Y debouncing or error signal processing method as noted above.

Method and apparatus for enhancing the robustness of a hybrid vehicle torque security diagnostic

A method for determining a voltage level across an electrical circuit of a powertrain includes measuring a plurality of voltage levels and utilizing a comparison test between at least two voltage levels of the plurality of voltage levels to determine the circuit voltage level.

Method for determining a voltage level across an electric circuit of a powertrain

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Rochester, MI, United States of America

Wei Ren