Characterizing Engine Load

摘要

Aspects of the disclosure are directed to characterizing vehicle mass. As may be implemented in accordance with one or more embodiments, one or more operating parameters of the vehicle are obtained, and at least one qualifying period of time is identified in which the operating parameter or parameters are within a range of values associated with the parameter. A value that provides an estimate of the mass is then generated based on the one or more operating parameters.

主权项

1. A method comprising estimating mass of a moving vehicle by:
detecting signals from an on board diagnostics (OBD) port of the moving vehicle that is connected to an engine control unit within the moving vehicle; obtaining, from the detected signals, at least one operating parameter of the vehicle including a motion parameter or an engine activity parameter; identifying at least one qualifying period of time in which the at least one operating parameter of the vehicle is within a range of values associated with that parameter; and generating an output signal indicating a value that provides an estimate of the mass of the vehicle, based on the at least one operating parameter.