Gm Global Technolgoy Operations, Inc.

William M Studzinski

Jill M Cummings

Roger A Clark

Pui-Kei Yuen

Roland Matthe

Elizabeth S Nunning

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

In some embodiments, a deposit-forming reference fuel composition comprises a high sulfur base fuel composition in an amount greater than 50 weight % based on total weight % of the deposit-forming reference fuel composition, wherein the high sulfur base fuel composition comprises greater than or equal to 200 ppm sulfur based on total sulfur content of the base fuel composition. The deposit-forming reference fuel composition also comprises a reactive diolefin dopant; and a reaction initiating peroxide. The reaction initiating peroxide has an active oxygen content greater than or equal to 2 weight % based on total oxygen content of the reaction initiating peroxide and a half-life temperature of 80&#xb0; C. to 200&#xb0; C. The deposit-forming reference fuel composition is free from a detergent additive and has a concentration ratio of greater than 1:1 for the reactive diolefin dopant to the reaction initiating peroxide.

Reference fuel composition

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Shelby Township, MI, United States of America

William M Studzinski