Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

Methods and systems are provided for improving the operating range of an electric vehicle having an engine wherein waste heat generated during motor operation is transferred to pre-heat the engine. Engine starting is predicted based on the electrical torque demand of the vehicle relative to the actual and predicted electrical energy consumption of the electric vehicle. Prior to starting the engine to charge a battery of the motor, various engine components are pre-heated in an order that improves vehicle range while also optimizing fuel economy.

A work vehicle has a hydraulic source; a control valve that controls a flow of the hydraulic oil discharged from the hydraulic source; and an engine starting device for starting an engine, in which a control device has: a low-temperature state determination unit that determines whether a temperature state of a working fluid of a torque converter is a low-temperature state; and a clutch control unit that when it is determined by the low-temperature state determination unit that the temperature state of the working fluid is not the low-temperature state, controls the control valve in order to switch a lock-up clutch to a non-engagement state, and when it is determined by the low-temperature state determination unit that the temperature state of the working fluid is the low-temperature state, controls the control valve in order to switch the lock-up clutch to a engagement state.

A work vehicle has a hydraulic source; a control valve that controls a flow of the hydraulic oil discharged from the hydraulic source; and an engine starting device for starting an engine, in which a control device has: a low-temperature state determination unit that determines whether a temperature state of a working fluid of a torque converter is a low-temperature state; and a clutch control unit that when it is determined by the low-temperature state determination unit that the temperature state of the working fluid is not the low-temperature state, controls the control valve in order to switch a lock-up clutch to a non-engagement state, and when it is determined by the low-temperature state determination unit that the temperature state of the working fluid is the low-temperature state, controls the control valve in order to switch the lock-up clutch to a engagement state.

An abnormality diagnostic method is provided for a driving force control system in which an automatic transmission is interposed between an engine and a drive wheel, and a target driving force that is transmitted to the drive wheel is calculated based on a driver's output request. The automatic transmission and the engine are controlled based on the target driving force. The abnormality diagnostic method includes calculating a target engine torque based on the target driving force, detecting an actual engine torque of the engine, and detecting an intake temperature of the engine. Upon determining the automatic transmission has been operating normally, abnormality diagnostic method determines an abnormality of the driving force control system exists that is caused by the engine upon determining a difference between the target engine torque and the actual engine torque has exceeded a predetermined threshold value.

A method for controlling a mild hybrid vehicle is disclosed. The method includes determining, by a controller, whether a state of charge (SOC) of a first battery that supplies electric power to a starter-generator exceeds a reference value. The method further includes operating, by the controller, the starter-generator and a starter that is separate from the starter-generator and receives electric power from a second battery at a voltage lower than that of the first battery. A combustion engine of the mild hybrid vehicle is started using the starter-generator and the starter when it is determined that the state of charge of the first battery exceeds the reference value and it is determined that an ambient air temperature of the engine exceeds a temperature reference value.

A hybrid vehicle includes an engine, a motor, a power storage device connected to the motor, and an electronic control unit. The electronic control unit executes power storage capacity decreasing control in a current trip and executes power storage capacity recovering control in a next trip when parking at a predetermined point is predicted. The electronic control unit limits execution of the power storage capacity decreasing control in the current trip when heavy-load traveling with a load heavier than a predetermined load is predicted to be performed within a predetermined period after the start of the next trip when the next trip is started at a predetermined point.