Abstract: A method of managing torque at a vehicle standstill includes outputting torque from a powertrain to satisfy a driver torque demand. The method also includes, in response to a nonzero torque demand resulting in vehicle standstill, applying a friction brake to maintain the vehicle standstill and substantially reducing output torque of the powertrain during friction brake application. The method further includes satisfying driver torque demand using the powertrain and releasing the friction brake in response to the driver torque demand deviating from the nonzero torque demand by more than a predetermined amount.

Abstract: A vehicle charging system includes a charger configured to receive power form an external power source and a connector. The connector is configured to receive power from the charger and transmit the received power to a vehicle via a high-voltage cable. The cable is configured to connect the connector to a vehicle battery. Each of the charger and the connector includes a high voltage interlock loop (HVIL) configured to cause the charger to cease power transfer upon recognizing a predetermined voltage difference at a pair of ports of the HVIL.

Abstract: A method, implemented in one or more controllers in a vehicle, includes, in a presence of a propulsive demand of the vehicle that is driven by an engine and an electric machine, holding electric machine current at a predetermined magnitude and sweeping an angle, defined between a reference current and a reference Iq component, through a predetermined range. The method further includes operating the electric machine thereafter according to a resolver offset derived from a value of the angle corresponding to an Iq component crossing zero.

Abstract: A vehicle includes an engine, a traction battery, a generator coupled to the engine and battery, and a controller. The controller may be configured to, in response to a current flowing from a battery charge station to the battery being less than a maximum charge current, a selection of a fast charge mode, and a temperature of the engine being less than a predetermined temperature, operate the engine to generate a supplemental current to charge the battery.

Abstract: A vehicle system includes a voltage converter configured to electrically isolate and convert power transferred between high voltage (HV) and low voltage (LV) busses, and a controller configured to, responsive to regenerative power exceeding a charge power limit of a traction battery receiving charge via the HV bus, increase an output voltage of the converter to initiate transfer of some of the regenerative power to an auxiliary battery connected with the LV bus.

Abstract: A vehicle includes an electric machine arranged to exchange power with a traction battery. The vehicle also includes a thermal conditioning system for influencing a battery temperature and a controller programmed to schedule battery charging. In response to a temperature of the traction battery exceeding a threshold, the controller issues a command to operate the thermal conditioning system prior to a scheduled battery charge to achieve a predetermined battery temperature at a start of battery charging.

Abstract: A vehicle includes a battery control module and a controller. The battery control module may be configured to issue at regular intervals a message indicative of an SOC of a battery. The controller may be configured to, in an absence of receiving the messages at the regular intervals while in a key-on state and a torque demand is present, restrict power flow between the battery and an electric powertrain to a limit that is based on a predicted SOC to provide limited propulsive force.

Abstract: A vehicle system includes a voltage converter configured to electrically isolate and convert power transferred between high voltage (HV) and low voltage (LV) busses, and a controller configured to, responsive to regenerative power exceeding a charge power limit of a traction battery receiving charge via the HV bus, increase an output voltage of the converter to initiate transfer of some of the regenerative power to an auxiliary battery connected with the LV bus.

Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.

Abstract: A vehicle includes an engine arranged to output torque and an electric machine arranged to apply a reaction torque against engine output torque to generate power for charging a traction battery. The vehicle also includes a controller programmed to issue a command to adjust the engine output torque and an output speed corresponding to a predetermined optimal brake specific fuel consumption while providing power to charge the fraction battery, satisfy an accessory power demand, and propel the vehicle.

Abstract: An off-board battery charger for a vehicle may include a high-voltage connector having first, second and power supply connector ports. The first connector port connects to a vehicle controller via a first cable. The second connector port connects to a vehicle battery via a second cable. And, the power supply connector port is electrically connected with the second port and receives power via a power supply cable from a separate and external power supply.

Abstract: A method of managing torque at a vehicle standstill includes outputting torque from a powertrain to satisfy a driver torque demand. The method also includes, in response to a nonzero torque demand resulting in vehicle standstill, applying a friction brake to maintain the vehicle standstill and substantially reducing output torque of the powertrain during friction brake application. The method further includes satisfying driver torque demand using the powertrain and releasing the friction brake in response to the driver torque demand deviating from the nonzero torque demand by more than a predetermined amount.

Abstract: A vehicle servicing method according to an exemplary aspect of the present disclosure incomes, among other things, disconnecting a high voltage battery pack of an electrified vehicle from a high voltage bus, connecting an external energy source to an inverter system controller after disconnecting the high voltage battery pack, starting an engine of the electrified vehicle using energy from an external energy source, and charging the high voltage battery pack using power from the engine.

Abstract: Methods and systems are provided for mitigating loss of engine torque due to cavitation in a fuel pump. One example approach is adjusting engine operation or fuel pump operation based on ambient conditions and a measured engine torque being lower than a desired engine torque after a pre-determined duration. The ambient conditions may include one or more of ambient temperature being higher than a temperature threshold, barometric pressure lower than a threshold pressure, and fuel volatility higher than a threshold volatility.

Abstract: A vehicle includes an electric machine arranged to exchange power with a traction battery. The vehicle also includes a thermal conditioning system for influencing a battery temperature and a controller programmed to schedule battery charging. In response to a temperature of the traction battery exceeding a threshold, the controller issues a command to operate the thermal conditioning system prior to a scheduled battery charge to achieve a predetermined battery temperature at a start of battery charging.

Abstract: A power management system for a vehicle having wheels and an electric machine operable to provide torque to drive at least one of the wheels includes a first energy storage system capable of supplying power to operate the electric machine. The system also includes a second energy storage system capable of supplying power directly to at least one vehicle load at a lower voltage than the first energy storage system. A voltage conversion device is operable to reduce a voltage of the power supplied by the first energy storage system to the lower voltage to charge the second energy storage system when the vehicle is in a key-off state.

Abstract: A vehicle is disclosed that has multiple coolant paths selected by control of a valve. A valve system is configured to direct coolant from an engine to a heat exchanger according to a difference between a temperature associated with the engine and a temperature associated with the heat exchanger. The valve system is also configured to direct coolant from the engine to an electric heater and to, in response to a heat demanded from the heat exchanger being greater than a heat capability of the electric heater, request the engine to run. A method is disclosed for controlling a valve to change from an isolation position in which the valve isolates coolant circulating through an electric heater and the valve from coolant circulating through an engine to a non-isolation position in which the valve directs coolant from the engine to the electric heater.

Abstract: A vehicle has an engine, a fuel tank, and a controller configured to selectively operate the engine, during one or more drive cycles, until a specified fraction of fuel from the tank has been consumed in response to expiration of a predefined time period to limit fuel degradation. A powertrain system has a traction battery, an engine, a fuel tank, and a controller configured to selectively operate the engine in response to a quality of fuel in the tank being below a threshold until a specified fraction of fuel has been consumed, thereby limiting fuel degradation. A method of controlling a vehicle includes, in response to expiration of a predefined time period, selectively operating an engine, during one or more vehicle drive cycles, such that state of charge of a traction battery is generally maintained until a specified fraction of fuel in a fuel tank has been consumed to limit degradation of the fuel.

Abstract: An exemplary method includes prompting a user to change an operating mode of an electrified vehicle from a first mode to a second mode that is different than the first mode. The first mode is a default mode. The second mode is a non-default mode.

Abstract: A vehicle has an engine, an exhaust aftertreatment system, an electric machine, and a controller configured to, in response to an actual engine torque output being less than an inferred engine torque, shut down the engine. A vehicle has an engine, an exhaust aftertreatment system, an electric machine, and a controller configured to, in response to an actual engine torque output being less than a first threshold and a torque request to the engine being greater than a second threshold, set a diagnostic code. A method includes receiving an actual engine torque output, receiving an engine torque request, and shutting down the engine when the actual engine torque output is less than a first threshold and the engine torque request is greater than a second threshold for a predetermined time period to limit temperature increase of a catalyst.