One embodiment is a system comprising an engine structured to output torque to an accessory drive, a rotary load structured to be selectably driven by the accessory drive, and an electronic control system. The electronic control system is operable to selectably engage and disengage the rotary load effective to vary the load on the engine, monitor engine load values in coordination with engagement of the rotary load, store a data set comprising the monitored engine load values in association with values of one or more associated system conditions in a non-transitory memory medium, update a mathematical model of the system stored in the non-transitory memory medium in response to the engine load values to converge one or more model parameters, diagnose or prognosticate a failure state of the rotary load in response to a change in the one or more model parameters, and output a perceptible diagnostic indication of the failure state in response to the diagnosis or prognostication.

An integrated control method of a motor for a vehicle includes detecting an output torque value of a drive motor and an output torque value of a ventilation system compressor motor by a controller when a vehicle start and a ventilation system are turned on, determining whether an error is occurred in the drive motor and the compressor motor as an output torque value of the drive motor and an output torque value of the ventilation system compressor motor are respectively compared with a drive motor torque reference value and a compressor motor torque reference value which are predetermined by the controller, and adjusting output torque values of the drive motor or the compressor motor depending on a result of determining whether an error is occurred in the drive motor and the compressor motor by the controller.

In a method for controlling engine power during charge depleting (CD) mode heating of a plug-in hybrid electric vehicle (PHEV), the engine power is controlled according to an amount of heat of an engine required for heating determined using a level of an air-conditioning blower at a point in time at which an operation of the engine starts, an outdoor air temperature, and a coolant temperature, if a full automatic temperature controller (FATC) operates the engine for heating when the vehicle is driven in a CD mode.

A method of operating an accessory drive system for a motor vehicle, wherein the accessory drive system includes one or more accessory components, a motor generator of the motor vehicle, and a flexible drive element configured to transmit a torque load between the one or more accessory components and the motor generator, includes determining a maximum permissible flexible drive element torque threshold, detecting an increase in torque demand on the flexible drive element, determining when the torque demand on the flexible drive element will exceed the flexible drive element torque threshold, and reducing the torque demand of one or more of the accessory components so that the flexible drive element torque threshold is not exceeded.

An apparatus for controlling charging of an electric vehicle includes a switch unit including a first relay and second relays, wherein the first relay is arranged on an electric line through which a first battery is connected in series to a second battery. The first and second batteries supply driving power of the electric vehicle. The plurality of second relays is arranged on charging lines through which charging power is supplied to the first battery and the second battery, respectively. Further, a control unit configured to control the first relay and the plurality of second relays such that the first relay is turned off and the plurality of second relays is turned on to supply the charging power of a charger connected to a charging terminal to the first battery and the second battery, respectively, when the first battery and the second battery are charged.

A tractor includes an engine, a transmission coupled to the engine, a hydraulic pump driven by the engine, at least one of a tractor implement, attachment, or control moved by the hydraulic pump, a sensor, and a controller coupled to the transmission. The controller is configured to downshift the transmission based on a signal from the sensor.

An agricultural prime mover, such as a tractor, may be used to execute an agricultural work process. The agricultural prime mover includes work assemblies that can be adjusted with machine parameters, and can be coupled to an attachment for processing a field. The agricultural prime mover includes a control and regulation module that optimizes the work assemblies by ascertaining machine parameters for the work assemblies using optimization data with respect to at least one objective. The control and regulation module executes a multi-step optimization strategy, including a first step at the farm directed to optimizing a basic configuration of the agricultural prime mover, a second step at the field directed to optimizing an attachment-specific configuration of the agricultural prime mover, and a third step in the field directed to optimizing the adaptation of the basic configuration and the attachment-specific configuration while processing the field.

An engine start-stop control method and device for a hybrid electric vehicle, and a hybrid electric vehicle belong to the technical field of vehicles. The method includes: obtaining a target parameter or a target signal, which is engine start-stop related, of the hybrid electric vehicle; determining, according to the target parameter or target signal, whether an engine start-stop related event occurs; if so, determining a level of the engine start-stop related event; and performing engine start-stop control according to the engine start-stop related event and the level thereof; wherein the engine start-stop related event includes at least one of the following: an energy management related start-stop event, a driving behavior related start-stop event, an engine state related start-stop event, an external controller request start-stop event, and other condition related start-stop events. The operating efficiency of the vehicle and the user experience are improved.

A hybrid electric vehicle includes an engine, a drive motor, and a controller configured to determine a boarding state or a leaving state of a passenger, to allow a vehicle to enter a first mode for pick-up driving or a second mode for drop-off driving, and to control the vehicle based on the entered mode and the boarding or leaving state after the entering, and a method of controlling the same.

One embodiment is a system comprising an engine structured to output torque to an accessory drive, a rotary load structured to be selectably driven by the accessory drive, and an electronic control system. The electronic control system is operable to selectably engage and disengage the rotary load effective to vary the load on the engine, monitor engine load values in coordination with engagement of the rotary load, store a data set comprising the monitored engine load values in association with values of one or more associated system conditions in a non-transitory memory medium, update a mathematical model of the system stored in the non-transitory memory medium in response to the engine load values to converge one or more model parameters, diagnose or prognosticate a failure state of the rotary load in response to a change in the one or more model parameters, and output a perceptible diagnostic indication of the failure state in response to the diagnosis or prognostication.