In performing double drive startup for starting up an engine while cranking the engine by both a first motor and a second motor, the cranking of the engine by one of the first motor and the second motor is finished earlier than the cranking of the engine by the other of the first motor and the second motor.

The invention concerns a motor vehicle battery wear monitoring system (1,1A,1B) that includes an acquisition device (11) and a processing device/system (12,12A,12B). The acquisition device (11) is: installed onboard a motor vehicle (2) that is equipped with an internal combustion engine, a battery for providing a battery voltage (V.sub.B), an alternator, and a starter motor for starting up the internal combustion engine; and configured to receive the battery voltage (V.sub.B) and to output quantities indicative of said battery voltage (V.sub.B). The processing device/system (12,12A,12B) is: configured to receive the quantities indicative of the battery voltage (V.sub.B) from the acquisition device (11); and programmed to perform a battery voltage monitoring based on the quantities indicative of the battery voltage (V.sub.B) to detect an approaching battery failure. The battery voltage monitoring includes detecting for each start-up of the internal combustion engine: a respective first voltage value (V.sub.MIN) that is a minimum value assumed by the battery voltage (VB) just after the starter motor has started operating to start up the internal combustion engine; and a respective second voltage value (V.sub.2) assumed by the battery voltage (V.sub.B) just after the internal combustion engine has been started up, the starter motor has stopped operating and the alternator has started operating. The battery voltage monitoring further includes for each start-up of the internal combustion engine: computing a respective voltage rise value (ΔV.sub.R) indicative of a difference between the respective first (V.sub.MIN) and second (V.sub.2) voltage values; and detecting an approaching battery failure if the respective voltage rise value (ΔV.sub.R) meets a predefined condition with respect to a predefined voltage rise threshold (T.sub.ΔVR).

A system for discharging or charging a capacitor of a hybrid vehicle according to the present disclosure includes a target state of charge (SOC) module and a capacitor charge/discharge module. The target SOC module determines a target state of charge of the capacitor based on a speed of the vehicle. The capacitor charge/discharge module determines whether a state of charge of a capacitor is greater than a target state of charge. The capacitor charge/discharge module dissipates power from the capacitor to at least one of a battery of the vehicle and an electrical load of the vehicle when the state of charge of the capacitor is greater than the target state of charge.

A system identification method executed by a system identification device that estimates a response of a system having a current flowing in a battery as input and an overvoltage of the battery as output, comprises: a first step of identifying the system by applying a model of the battery including a FIR model and an ARX model to the system, based on time series data of each of the current flowing in the battery and the overvoltage of the battery in a predetermined period; and a second step of estimating, based on the model of the battery, the overvoltage of the battery output from the system at an estimation target time after an input start time in the case where no current is input before the input start time and the current is input to the system from the input start time onwards.

In performing double drive startup for starting up an engine while cranking the engine by both a first motor and a second motor, the cranking of the engine by one of the first motor and the second motor is finished earlier than the cranking of the engine by the other of the first motor and the second motor.

An engine including an engine block having a cylinder defining a front of the engine, a blower housing coupled to the engine block and defining a hot half and a cool half opposite the front half, a starter mount assembly coupled to the blower housing and positioned within the cool half, an electric starter motor retained by the starter mount assembly, and a battery mounted to the blower housing and positioned in the cool half. The battery is electrically coupled to the electric starter motor.

The invention concerns a motor vehicle battery wear monitoring system (1,1A,1B) that includes an acquisition device (11) and a processing device/system (12,12A,12B). The acquisition device (11) is: installed onboard a motor vehicle (2) that is equipped with an internal combustion engine, a battery for providing a battery voltage (V.sub.B), an alternator, and a starter motor for starting up the internal combustion engine; and configured to receive the battery voltage (V.sub.B) and to output quantities indicative of said battery voltage (V.sub.B). The processing device/system (12,12A,12B) is: configured to receive the quantities indicative of the battery voltage (V.sub.B) from the acquisition device (11); and programmed to perform a battery voltage monitoring based on the quantities indicative of the battery voltage (V.sub.B) to detect an approaching battery failure. The battery voltage monitoring includes detecting for each start-up of the internal combustion engine: a respective first voltage value (V.sub.MIN) that is a minimum value assumed by the battery voltage (VB) just after the starter motor has started operating to start up the internal combustion engine; and a respective second voltage value (V.sub.2) assumed by the battery voltage (V.sub.B) just after the internal combustion engine has been started up, the starter motor has stopped operating and the alternator has started operating. The battery voltage monitoring further includes for each start-up of the internal combustion engine: computing a respective voltage rise value (ΔV.sub.R) indicative of a difference between the respective first (V.sub.MIN) and second (V.sub.2) voltage values; and detecting an approaching battery failure if the respective voltage rise value (ΔV.sub.R) meets a predefined condition with respect to a predefined voltage rise threshold (T.sub.ΔVR).

A vehicle determines a first resistance of a starter motor and a starter cable connected thereto based at least in part on the first voltage of a power source. The vehicle determines a predicted minimum battery voltage based at least in part on the first resistance of the starter motor and the starter cable. The vehicle, in response to the predicted minimum battery voltage satisfying a threshold, enables a vehicle stop-start function, and, in response to the predicted minimum battery voltage failing to satisfy the threshold, disables the vehicle stop-start function.

Energy storage device, in particular for the starter of an internal combustion engine, includes at least one energy storage element, a data generating unit for acquiring operating parameters of the energy storage device and generating corresponding data, at least one separating device for reversibly separating an electrically conductive connection between the energy storage element and a power source and/or an electrically conductive connection between the energy storage element and a power receiver, and a data transmitting unit for transmitting data between the data generating unit and a data input/output device and between the data input/output device and the separating device, where the separating device is actuated depending on data which is transmitted from the data generating unit and/or the data transmitting unit to the separating device.

During a hybrid drive, a hybrid vehicle sets an engine required power based on a driving required power and controls an engine to output the engine required power, while controlling a motor to drive the hybrid vehicle with the driving required power. When a catalyst temperature of an exhaust emission control device is equal to or lower than a predetermined temperature that requires warming up, in the state that an output upper limit power which a power storage device is allowed to output is equal to or larger than a predetermined power, the hybrid vehicle sets a power calculated by subtracting the output upper limit power from the driving required power, to the engine required power. In the state that the output upper limit power is smaller than the predetermined power, the hybrid vehicle sets the driving required power to the engine required power.