Systems and methods for engine load management for electric drive vehicles

DRIVE February 20, 2013
Source
A method for load management for an electric drive machine comprises receiving a fuel signal indicative of a volume of fuel provided to an engine (120) associated with the electric drive machine, receiving an engine speed signal indicative of a rotational speed of an output shaft of the engine (120), and receiving a boost pressure signal indicative of a pressure of air at an intake manifold of the engine (120). The method further includes determining a torque adjustment factor based on the fuel signal and the boost pressure signal, and determining a torque capability of the engine (120) based on the fuel signal and the engine speed signal. An engine torque limit is determined based on the torque capability and the torque adjustment factor. A first motor torque command signal is determined for a first electric drive motor (212a,212b) of the electric drive machine based at least in part on the engine torque limit.

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