The present disclosure relates to an ISG control system and an ISG control method for a construction machine capable of controlling ISG even in a working state of a construction machine, the ISG control system including: a surrounding environment determinator configured to determine surrounding environment of the construction machine; and a vehicle controller configured to determine whether the construction machine is in a working state or a traveling state based on a determination result from the surrounding environment determinator, wherein the vehicle controller controls an engine based on a preset work ISG condition when it is determined that the construction machine is in the working state, and wherein the vehicle controller controls the engine based on a preset travel ISG condition when it is determined that the construction machine is in the traveling state.

A method of controlling power to a vehicle accessory gradually shuts down power to the vehicle accessory and gradually restores power to the vehicle accessory. After a request for an auto-shutdown of an internal combustion engine of a vehicle is detected, power to the vehicle accessory is reduced on a predetermined schedule responsive to such detection. The occurrence of a restart of the internal combustion engine of a vehicle is determined, and power supplied to the vehicle accessory is increased on a predetermined schedule responsive to the restart.

The present disclosure relates to an ISG control system and an ISG control method for a construction machine capable of controlling ISG even in a working state of a construction machine, the ISG control system including: a surrounding environment determinator configured to determine surrounding environment of the construction machine; and a vehicle controller configured to determine whether the construction machine is in a working state or a traveling state based on a determination result from the surrounding environment determinator, wherein the vehicle controller controls an engine based on a preset work ISG condition when it is determined that the construction machine is in the working state, and wherein the vehicle controller controls the engine based on a preset travel ISG condition when it is determined that the construction machine is in the traveling state.

In some embodiments, a vehicle includes a temperature monitoring controller. The temperature monitoring controller is a processor, control module, or other suitable hardware that is configured to receive temperature sensor values from an engine control module (ECM) when an ignition bus is in a powered on state, and to decide when the engine should be automatically started in order to maintain a temperature above a low temperature threshold. The temperature monitoring controller periodically causes an ignition bus of the vehicle to be placed in the powered on state when the engine is shut down in order to collect temperature sensor values. The temperature monitoring controller determines whether to automatically start the engine, and if not, determines how long to wait before collecting temperature sensor values again based on a rate of change of the temperature sensor values.

Systems and methods described herein relate to managing the freshness of the fuel in a vehicle. One embodiment tracks a freshness level of the fuel in the vehicle as time passes; determines a fuel consumption plan based, at least in part, on a predetermined refueling schedule for the vehicle and the freshness level of the fuel in the vehicle; and activates an internal combustion engine of the vehicle automatically on one or more occasions in accordance with the fuel consumption plan to consume at least a portion of the fuel.

Systems and methods described herein relate to managing the freshness of the fuel in a vehicle. One embodiment tracks a freshness level of the fuel in the vehicle as time passes; determines a fuel consumption plan based, at least in part, on a predetermined refueling schedule for the vehicle and the freshness level of the fuel in the vehicle; and activates an internal combustion engine of the vehicle automatically on one or more occasions in accordance with the fuel consumption plan to consume at least a portion of the fuel.

In some embodiments, a vehicle includes a temperature monitoring controller. The temperature monitoring controller is a processor, control module, or other suitable hardware that is configured to receive temperature sensor values from an engine control module (ECM) when an ignition bus is in a powered on state, and to decide when the engine should be automatically started in order to maintain a temperature above a low temperature threshold. The temperature monitoring controller periodically causes an ignition bus of the vehicle to be placed in the powered on state when the engine is shut down in order to collect temperature sensor values. The temperature monitoring controller determines whether to automatically start the engine, and if not, determines how long to wait before collecting temperature sensor values again based on a rate of change of the temperature sensor values.

A starter is installed in a vehicle. In the starter, a crank shaft is driven by a motor which rotates a pinion gear in a state where a ring gear connected to the crank shaft is in engagement with the pinion gear. Thus, an engine is started. The starter sets a start-up period depending on the type of the start-up trigger that generates a start-up request for the engine, and sets a current supplied to the motor on the basis of the set start-up period. Thus, at least either of a rotation speed and an output torque of the motor is controlled. This control is implemented by a control circuit.

In some embodiments, a vehicle includes a temperature monitoring controller. The temperature monitoring controller is a processor, control module, or other suitable hardware that is configured to receive temperature sensor values from an engine control module (ECM) when an ignition bus is in a powered on state, and to decide when the engine should be automatically started in order to maintain a temperature above a low temperature threshold. The temperature monitoring controller periodically causes an ignition bus of the vehicle to be placed in the powered on state when the engine is shut down in order to collect temperature sensor values. The temperature monitoring controller determines whether to automatically start the engine, and if not, determines how long to wait before collecting temperature sensor values again based on a rate of change of the temperature sensor values.

A controller for a vehicle includes failure diagnosis circuitry and drive control circuitry. The failure diagnosis circuitry is configured to perform a failure diagnosis of an internal combustion engine system while an internal combustion engine is in operation. The drive control circuitry is configured to operate the internal combustion engine in a charge depleting mode operation in which an electric motor mainly moves the vehicle while the internal combustion engine is not run only for charging a battery. The drive control circuitry is configured to run the internal combustion engine if a predetermined condition is satisfied in the charge depleting mode operation. The drive control circuitry is configured to continue running the internal combustion engine in order to perform the failure diagnosis even if the predetermined condition is unsatisfied while the internal combustion engine is run in the charge depleting mode operation.