Methods and systems are provided for controlling an engine idle-stop based on upcoming traffic and road conditions. In one example, a method may include receiving data including traffic information and road characteristics immediately ahead of a vehicle from one or more remote sources, and adjusting one or more vehicle thresholds based on the received data. A duration of a prospective engine idle-stop may be estimated based on the received data and an engine idle-stop may be initiated based on the duration of the prospective engine idle-stop and the adjusted one or more vehicle threshold.

During a fuel cut-off control, if a vehicle deceleration rate becomes greater than a rapid deceleration determination value, which is calculated based on a rotational resistance of internal combustion engine 1, a vehicle is determined to be in a state of rapid deceleration. The rapid deceleration determination value is set to decrease as the rotational resistance of internal combustion engine 1 increases. The rotational resistance thereof increases as the vehicle speed decreases, and increases as a transmission gear ratio increases. Thereby, during decelerating on a high vehicle speed side, an erroneous determination of rapid deceleration due to a longitudinal vibration of the vehicle that occurs when the fuel cut-off control starts can be prevented, and during decelerating on a low vehicle speed side, a determination of rapid deceleration can be implemented to terminate the fuel cut-off control and thereby prevent the internal combustion engine 1 from being stopped.

A control system of a vehicle includes: an engine; a plurality of accessories including an air conditioner; a battery; a generator; and an ECU configured to automatically stop the engine, control the generator to charge or discharge the battery, inhibit the engine from being automatically stopped, calculate a first stop time as a length of time for which the engine can be automatically stopped, during operation of the air conditioner, calculate a first electric quantity as an estimated quantity of electricity consumed, calculate a second stop time as a length of time for which the vehicle is predicted to be stopped in the future, calculate a second electric quantity as an estimated quantity of electricity consumed, and determine the SOC target value, based on the first electric quantity and the second electric quantity.

The present invention is to provide a parking control device that can improve driving performance during a parking operation execution period of a hybrid vehicle. The parking control device A1 is a parking control device to control parking of a hybrid vehicle 1, and includes a necessary electric energy calculation unit 11, an electric energy comparison unit 21, and a control unit 31, wherein the control unit 31 continuously performs battery traveling, or the battery traveling and engine travelling, and permits engine charging during a parking operation execution period to execute the parking of the hybrid vehicle 1 in a case where usable electric energy is lower than necessary electric energy, and continuously performs the battery traveling without continuously performing the engine travelling and the engine charging during the parking operation execution period to execute the parking of the hybrid vehicle in a case where the usable electric energy is equal to or higher than the necessary electric energy.

A system and method for operating an automatic start/stop system in a motor vehicle having an internal combustion engine, an automatic transmission and a torque converter with an impeller disconnect clutch is disclosed. A controller may implement an engine start/stop system by, at appropriate times, stopping engine by halting fuel and restarting engine when propulsion is needed. During an engine start/stop event, the engine is automatically shut down and the impeller clutch of the torque converter may be disengaged to decouple the impeller and the engine to provide for fuel and emissions savings.

A vehicle includes an engine, a continuously variable transmission and a torque converter that has a lock-up clutch. The torque converter is arranged between the engine and the continuously variable transmission. The vehicle further includes engine accessories such as an air conditioner compressor and alternator that are driven by the engine. In this vehicle, a slip control is executed that produces a predetermined slip rotational state by controlling a lock-up capacity of the lock-up clutch. During slip control of the lock-up clutch, the engine-equipped vehicle executes cooperative control that suppresses load fluctuations of engine accessories such as the air conditioner compressor and the alternator.

A vehicle utilizes an internal combustion powertrain to propel front wheels and an Electric Rear Axle Drive (ERAD) to propel rear wheels. In some circumstances, a controller may need to limit motor torque in the ERAD to avoid overheating the motor, which reduces fuel efficiency. To reduce the likelihood of needing to limit motor torque, refrigerant from the vehicle air conditioning system is circulated through the motor housing. In response to commands from a controller, a valve routes the refrigerant either through the air conditioning system evaporator or through the motor housing.

A power-split gearbox device in an agricultural work vehicle. The gearbox device includes a compounded gearbox, an electrical variator for the continuous varying of a ratio of the compounded gearbox, and a gearbox with an adjustable ratio to connect a drive motor with a propulsion of the work vehicle.

A vehicle utilizes an internal combustion powertrain to propel front wheels and an Electric Rear Axle Drive (ERAD) to propel rear wheels. In some circumstances, a controller may need to limit motor torque in the ERAD to avoid overheating the motor, which reduces fuel efficiency. To reduce the likelihood of needing to limit motor torque, refrigerant from the vehicle air conditioning system is circulated through the motor housing. In response to commands from a controller, a valve routes the refrigerant either through the air conditioning system evaporator or through the motor housing.

A control device for a hybrid vehicle having an engine, a motor which drives by power of a battery, and an air conditioner which operates by power of the battery, includes a target driving force calculator configured to calculate a target value of driving three transmitted to a drive wheel from a driving source as target driving force, an air conditioner manager configured to manage an ON/OFF state of an air conditioner, and a controller configured to calculate a request output by adding the target driving force to a system output requested to the drive source by a system request, calculate an operation point of the engine for optimally driving the engine in response to the request output, control the engine to drive at the operation point, and control the motor based on the request output.