A hydraulic system including hydraulic fluid, a hydraulic machine for pressuring the hydraulic fluid, a hydraulic circuit for delivering the hydraulic fluid to a hydraulic actuator, the hydraulic machine being configured to receive the hydraulic fluid from the hydraulic actuator and a kinetic energy storage device for storing energy in a kinetic form, the kinetic energy storage device being operably coupled to the hydraulic machine, the system being configured such that the hydraulic machine is operable to transfer energy from the hydraulic fluid received from the hydraulic actuator to the kinetic energy storage device.

A control method of a hybrid vehicle capable of increasing regenerative braking efficiency by controlling an operating point of an electric motor includes steps of determining, by a hybrid control unit (HCU), a first torque for an generation mode operation of an electric motor, determining, by the HCU, whether the first torque and a speed of the electric motor correspond to an operating point for achieving charge of a battery through the generation mode operation, and, upon determining that the first torque and the speed of the electric motor correspond to an operating point at which the charge of the battery is disabled, changing, by the HCU, the first torque into a second torque that corresponds to an operating point at which the charge of the battery is achieved.

A control method of a hybrid vehicle capable of increasing regenerative braking efficiency by controlling an operating point of an electric motor includes steps of determining, by a hybrid control unit (HCU), a first torque for an generation mode operation of an electric motor, determining, by the HCU, whether the first torque and a speed of the electric motor correspond to an operating point for achieving charge of a battery through the generation mode operation, and, upon determining that the first torque and the speed of the electric motor correspond to an operating point at which the charge of the battery is disabled, changing, by the HCU, the first torque into a second torque that corresponds to an operating point at which the charge of the battery is achieved.

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.

An apparatus includes an energy storage circuit, an input circuit, and a hybrid management circuit. The energy storage circuit is structured to receive information regarding a state of charge (SOC) and a state of health (SOH) of an energy storage device structured to store energy. The input circuit is structured to receive an indication of a torque demand. The hybrid management circuit is structured to: determine a SOH adjustment factor based on the SOH of the energy storage device; determine a first torque output for a genset based on the SOH adjustment factor and the SOC of the energy storage device, the genset including an engine and a first motor-generator; and operate the genset to provide the first torque output and to generate an amount of energy for a second motor-generator to meet the torque demand according to the SOH adjustment factor.

An apparatus includes an energy storage circuit, an input circuit, and a hybrid management circuit. The energy storage circuit is structured to receive information regarding a state of charge (SOC) and a state of health (SOH) of an energy storage device structured to store energy. The input circuit is structured to receive an indication of a torque demand. The hybrid management circuit is structured to: determine a SOH adjustment factor based on the SOH of the energy storage device; determine a first torque output for a genset based on the SOH adjustment factor and the SOC of the energy storage device, the genset including an engine and a first motor-generator; and operate the genset to provide the first torque output and to generate an amount of energy for a second motor-generator to meet the torque demand according to the SOH adjustment factor.

A control device includes: an in-vehicle communication unit capable of communicating with an on-vehicle control device; and a control unit configured to control the in-vehicle communication unit. The control unit monitors a power storage amount of an on-vehicle battery during traveling, and executes a charge control for causing the in-vehicle communication unit to transmit an instruction of power generation to an on-vehicle generator that supplies power to the on-vehicle battery, when the power storage amount is reduced to reach a threshold value. The threshold value corresponds to a power amount greater than a necessary power amount required for an update process of a control program in the on-vehicle control device.

A vehicle controller includes: an engine controller configured to perform an IS control upon satisfaction of a predetermined stop condition and an engine restart control upon satisfaction of a predetermined restart condition; an HDC controller configured to perform, when the vehicle is traveling on a downhill road and a deceleration request according to an HDC control occurs, a target vehicle speed-based deceleration irrespective of brake operations by the driver; and an information acquisition part configured to acquire progress status information related to the engine restart control and including information on initiation and completion thereof. When an engine restart request according to the IS control and the deceleration request according to the HDC control occur in a temporally overlapping manner, while the engine controller performs the engine restart control in a prioritized manner, the HDC controller allows performing the target vehicle speed-based deceleration on the basis of the progress status information.

A vehicle controller includes: an engine controller configured to perform an IS control upon satisfaction of a predetermined stop condition and an engine restart control upon satisfaction of a predetermined restart condition; an HDC controller configured to perform, when the vehicle is traveling on a downhill road and a deceleration request according to an HDC control occurs, a target vehicle speed-based deceleration irrespective of brake operations by the driver; and an information acquisition part configured to acquire progress status information related to the engine restart control and including information on initiation and completion thereof. When an engine restart request according to the IS control and the deceleration request according to the HDC control occur in a temporally overlapping manner, while the engine controller performs the engine restart control in a prioritized manner, the HDC controller allows performing the target vehicle speed-based deceleration on the basis of the progress status information.

A vehicle control apparatus sets a target speed of a vehicle such that a maximum value of the target speed is a first speed during a parking assist control. The vehicle control apparatus executes the parking assist control with maintaining a speed of the vehicle at a speed equal to or slower than a predetermined speed limit value slower than the first speed when a predetermined condition that the vehicle moves along a downward slope, is satisfied when a first electric power source device is in a normal state during the parking assist control. At least one of a braking apparatus and a shift change apparatus executes a stopping control of stopping the vehicle when a malfunction occurs in the first electric power source device during the parking assist control.