Method and System for Operating an Engine Start-Stop System in a Vehicle

Abstract

A method to control engine start-stop in a vehicle is provided. The method includes outputting via a controller an engine command to auto-start the engine based on detection of a predetermined vehicle condition affecting fuel economy of the vehicle, detection of a shift from neutral to another gear position, and whether a predetermined time threshold has expired following the shift in response to detection of a presence of an engine auto-stop mode and a neutral gear position. The predetermined vehicle condition may be a movement of the vehicle in a reverse direction. The predetermined vehicle condition may be a battery parameter being outside of predetermined range. The predetermined range may be based on a battery state of charge, a battery temperature, a battery voltage, or a battery load current. The predetermined vehicle condition may be a HVAC component activation.

Dependencies are inferred from the claim text.