Abstract: An automotive vehicle includes an engine, an alternator or integrated starter generator, and at least one controller. The at least one controller reduces voltage output of the alternator or integrated starter generator prior to initiating an auto stop of the engine.

Abstract: A vehicle includes an engine and at least one controller. The at least one controller periodically determines an estimated current to be demanded by vehicle electrical loads during an auto stop of the engine, compares the estimated current with a threshold current, and inhibits an auto stop of the engine if the estimated current is greater than the threshold current for a predetermined period of time.

Abstract: An automotive vehicle may include an engine, an electric power steering system and at least one controller. The at least one controller may, during an auto stop event of the engine, reduce at a first rate an available electric power steering system current to a non-zero threshold value before fuel to the engine is shut off and reduce at a second rate different than the first rate the available electric power steering system current from the non-zero threshold value to 0 after fuel to the engine is shut off.

Abstract: An automotive vehicle includes an engine and at least one controller. The at least one controller receives information about steering angle velocity or steering input torque during an engine auto stop event, and determines whether to allow the engine to auto stop based on the received information.

Abstract: An internal combustion engine has an engine shut-down system that automatically interrupts engine operation when vehicle operation indicates that no torque is required from the engine. An air conditioner compressor operates to cool a passenger compartment of the vehicle and is actuated in a first phase time, and is not actuated in a second phase time. An override system compares the time the compressor is in the enabled first phase time to the time the compressor is in the disabled second phase time. The override system disables the engine shut-down system unless it is determined that a ratio of the disabled second phase time to the enabled first phase time has a low rate of change, that the ratio is greater than a predetermined value, and that the time the compressor is in the disabled second phase is greater than a predetermined value.