Load-based vehicle operating control

摘要

A hybrid vehicle includes an engine and an electric machine, both capable of propelling the vehicle. The electric machine is electrically connected to a high voltage traction battery. The state of charge of the battery can decrease if the battery is used to power the electric machine, and can increase if the electric machine supplies power to the battery via regenerative braking. Constraints are placed on the vehicle such that the battery operates within a preferred operating window, defined between minimum and maximum state of charge thresholds. At least one controller is programmed to alter the preferred operating window of the battery in response to various vehicular activities, such as when the vehicle is towing another object, or when the vehicle weighs above a certain threshold due to contents within the vehicle, for example.

主权项

1. A vehicle comprising:
an engine; an electric machine; a battery connected to the electric machine; and a controller programmed to inhibit the electric machine from propelling the vehicle in response to a charge of the battery reaching a minimum state-of-charge threshold, inhibit regenerative braking in response to the charge reaching a maximum state-of-charge threshold, and decrease the minimum state-of-charge threshold and increase the maximum state-of-charge threshold in response to detecting a vehicle load condition.