A control device of a powertrain system executes a control input determination processing and a system control processing. The control input determination processing includes a co-state variable determination processing to update a co-state variable p of an optimization problem for each time step and a control input calculation processing. The co-state variable determination processing includes an initial value determination processing that determines, as an initial value of the co-state variable p, the sum of a base value of the initial value and an external charge/discharge correction value. The base value is a final value or an average value of the co-state variable p during the last control time period. The external charge/discharge correction value is determined based on an external charge/discharge amount obtained by subtracting a SOC at the end of the last control time period from the SOC at the start of the current control time period.

A control device of a powertrain system executes a control input determination processing and a system control processing. The control input determination processing includes a co-state variable determination processing to update a co-state variable p of an optimization problem for each time step and a control input calculation processing. The co-state variable determination processing includes an initial value determination processing that determines, as an initial value of the co-state variable p, the sum of a base value of the initial value and an external charge/discharge correction value. The base value is a final value or an average value of the co-state variable p during the last control time period. The external charge/discharge correction value is determined based on an external charge/discharge amount obtained by subtracting a SOC at the end of the last control time period from the SOC at the start of the current control time period.

A program update method includes a first step of acquiring a remaining capacity of electric power stored in an electric power storage device, a second step of acquiring an electric power amount required for the control device to update the control program, a third step of determining whether the remaining capacity is smaller than the electric power amount, a fourth step of charging the electric power storage device such that the remaining capacity becomes the electric power amount or larger when it is determined that the remaining capacity is smaller than the electric power amount in the third step, and a fifth step of causing the control device to update the control program when the remaining capacity becomes the electric power amount or larger in the fourth step. The first to fifth steps are performed when the vehicle is operating.

A program update method includes a first step of acquiring a remaining capacity of electric power stored in an electric power storage device, a second step of acquiring an electric power amount required for the control device to update the control program, a third step of determining whether the remaining capacity is smaller than the electric power amount, a fourth step of charging the electric power storage device such that the remaining capacity becomes the electric power amount or larger when it is determined that the remaining capacity is smaller than the electric power amount in the third step, and a fifth step of causing the control device to update the control program when the remaining capacity becomes the electric power amount or larger in the fourth step. The first to fifth steps are performed when the vehicle is operating.

In an electric device control method and an electric device of the present invention, during a period in which a rotational speed of an internal combustion engine shifting from a non-combustion mode to a combustion mode is decreased to a rotational speed within a predetermined rotational-speed range by a first electric motor connected to the internal combustion engine, a torque generated by the internal combustion engine is set lower than a required torque within the predetermined rotational-speed range for the internal combustion engine in the combustion mode.

The present disclosure provides a vehicle, a start control method for the vehicle, and a start control system of the vehicle. The method includes: when a door of the vehicle is in an open state, determining a position of a key; when the key is in the vehicle, controlling a first high-voltage module group of the vehicle to perform power on; when the door of the vehicle is changed from the open state to a closed state, determining the position of the key and detecting a state of a brake pedal of the vehicle; and when the brake pedal of the vehicle is depressed and the key is in the vehicle, controlling, according to a start instruction, a second high-voltage module group of the vehicle to perform power on, so that the first high-voltage module group is controlled, by using a time for a user to open and close the door, in advance, to perform power on, reducing a time for the user to start the vehicle after inputting a start instruction, effectively shortening a time for the user to wait for the vehicle to start, and improving user experience.

The present disclosure provides a vehicle, a start control method for the vehicle, and a start control system of the vehicle. The method includes: when a door of the vehicle is in an open state, determining a position of a key; when the key is in the vehicle, controlling a first high-voltage module group of the vehicle to perform power on; when the door of the vehicle is changed from the open state to a closed state, determining the position of the key and detecting a state of a brake pedal of the vehicle; and when the brake pedal of the vehicle is depressed and the key is in the vehicle, controlling, according to a start instruction, a second high-voltage module group of the vehicle to perform power on, so that the first high-voltage module group is controlled, by using a time for a user to open and close the door, in advance, to perform power on, reducing a time for the user to start the vehicle after inputting a start instruction, effectively shortening a time for the user to wait for the vehicle to start, and improving user experience.

The present disclosure provides an engine stop/start control system for a vehicle comprising a first engine restart module configured to set a restart frequency and duration of an engine in response to a sensed ambient temperature, a second engine restart module configured to control the engine in response to a sensed characteristic temperature associated with the engine, a third engine restart module configured to control the engine in response to occurrence or non-occurrence of at least one expected charging event along a predefined route, a fourth engine restart module configured to control the engine in response to a state-of-charge of an energy storage device, and a route optimization module configured to set and adjust a proposed route to a destination that results in reduced engine usage.

The present disclosure provides an engine stop/start control system for a vehicle comprising a first engine restart module configured to set a restart frequency and duration of an engine in response to a sensed ambient temperature, a second engine restart module configured to control the engine in response to a sensed characteristic temperature associated with the engine, a third engine restart module configured to control the engine in response to occurrence or non-occurrence of at least one expected charging event along a predefined route, a fourth engine restart module configured to control the engine in response to a state-of-charge of an energy storage device, and a route optimization module configured to set and adjust a proposed route to a destination that results in reduced engine usage.

A system for communication between a first electric vehicle, and a second electric vehicle following the first electric vehicle on a route comprises a controller communicatively coupled to a battery associated with the second electric vehicle. The controller is configured to receive a set of first operating parameters associated with the first electric vehicle. The controller determines whether to adjust a component operating parameter of at least one component of the second electric vehicle based on the set of first operating parameters. The controller generates an adjustment command configured to adjust a component operating parameter of the at least one component responsive to the determination. The adjustment of the component operating parameter is configured to manage a state of charge of the battery associated with the second electric vehicle.