Gm Global Technolgoy Operations, Inc.

Elizabeth S Nunning

Bakhtiar Brian Litkouhi

Jin-Woo Lee

Roger A Clark

Pui-Kei Yuen

Roland Matthe

William M Studzinski

Martin Hans Krueger

Data collection and analysis processes include collecting energy consumption data from an in-vehicle energy source sensor, collecting emissions data from an in-vehicle emissions sensor, the emissions data reflecting emissions produced by a vehicle, and collecting mileage data from a mileage sensor in the vehicle. The data collection and analysis processes also include processing the energy consumption data and the emissions data as a function of the mileage data, calculating an efficiency rating from the processing, and transmitting results of the processing to a data collection system.

Acquisition of in-vehicle sensor data and rendering of aggregate average performance indicators

A system for calculating an instantaneous fuel economy for a vehicle is disclosed herein. The system includes, but is not limited to, a speed sensor that is configured to determine a current speed of the vehicle, an acceleration sensor that is configured to determine a current acceleration of the vehicle, a fuel sensor that is configured to determine a current fuel consumption rate of an internal combustion engine of the vehicle, a display unit, and a processor. The processor is communicatively coupled with the speed sensor, the acceleration sensor, and the fuel sensor, and is operatively coupled with the display unit. The processor is configured to determine the instantaneous fuel economy of the vehicle based on information obtained from the speed sensor, the acceleration sensor, and the fuel sensor. The processor is further configured to instruct the display unit to display the instantaneous fuel economy.

System and method for calculating an instantaneous fuel economy for a vehicle

A method is provided of estimating a road grade of a current driven road. A nominal value of a vehicle operating parameter is measured during a nominal vehicle operating condition. The vehicle operating parameter is related to a vehicle thrust power. The nominal value of the vehicle operating condition is comprised of a nominal acceleration corresponding to the nominal value when the vehicle is driven on a substantially non-inclined road. The nominal value and nominal acceleration is stored in a memory. An actual value of the vehicle operating parameter is determined during a current vehicle operating condition. A vehicle acceleration corresponding to the actual value of the vehicle operating parameter is measured. The road grade of the current driven road is estimated as a function of a comparison between the measured acceleration value and the nominal acceleration that would be expected for the actual value of the vehicle operating parameter.

Method for road grade estimation for enhancing the fuel economy index calculation

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Troy, MI, United States of America

Elizabeth S Nunning