A vehicle control system (VCS) in a passenger compartment interfaces with underhood components using a Bluetooth® link. The underhood components include a siren assembly with a sound generator and backup battery. The battery enables the siren assembly to function after the vehicle's battery is disabled. The siren assembly includes a Bluetooth® transceiver for establishing the link with the VCS. The siren assembly monitors the hood of the vehicle through a hood sensor, to detect unauthorized opening. In response to such opening, the siren assembly transmits an alarm to the VCS, which transmits an alarm to a user's mobile device and/or a security service. The sound generator may also be activated, by itself or under control of the VCS. The siren assembly connects to the engine computer/ignition module, to allow the VCS to monitor engine speed, and facilitate proper start of the engine when the VCS receives a remote start command.

An improved method and apparatus for powering an electric motor for starting an internal combustion engine in which the electric motor is in a 6 volt to 48 volt operating system, in which an auxiliary battery pack has a battery pack housing; at least one lithium-based rechargeable cell within the housing; associated means for receiving a radio transmitted signal; associated means for turning the rechargeable cell ON or OFF; and battery connections for connecting the auxiliary battery pack to a battery in a 6 volt to 48 volt operating system.

A monitoring method includes, among other things, within a vehicle, providing a first electrical system with an auxiliary battery, and a second electrical system with a primary battery. The method further includes electrically coupling the first electrical system to the second electrical system, electrically loading the auxiliary battery and the primary battery, and comparing an electrical parameter of the auxiliary battery to a threshold value to assess a state of the auxiliary battery.

A system in a vehicle includes a starter motor to start an engine of the vehicle and a battery configured to power the starter motor during the start of the engine. An ultracapacitor is controllably connected in series with the battery to provide additional power to the starter motor during the start of the engine.

A system and method for retrofit engine start/stop control system for an air starter equipped internal combustion engine includes a circuit to energize and air control value, an air pressure sensor, a programmable logic controller, an engine block temperature sensor to measure an external engine temperature, an ambient temperature sensor, an ignition circuit connector, a battery voltage sensor, and an engine speed sensor. The programmable logic controller is configured to start the engine when at least one of the pressure of the compressed gas tank, an external engine block temperature, an ambient air temperature, and a battery output voltage fall below a predefined threshold value for startup.

Systems and methods associated with electrical systems of aircraft are disclosed. A method disclosed herein comprises generating electricity using an electric generator operatively coupled to an engine of the aircraft, supplying the electricity generated using the electric generator to a baseline power bus; generating electricity using an electric starter generator operatively coupled to the engine; and supplying the electricity generated using the electric starter generator to a supplemental power bus independent from the baseline power bus.

Systems and methods associated with electrical systems of aircraft are disclosed. A method disclosed herein comprises generating electricity using an electric generator operatively coupled to an engine of the aircraft, supplying the electricity generated using the electric generator to a baseline power bus; generating electricity using an electric starter generator operatively coupled to the engine; and supplying the electricity generated using the electric starter generator to a supplemental power bus independent from the baseline power bus.

The disclosure is directed to a system and method for providing supplemental power to start one or more cranking motors. The supplemental starting system includes a starting-signal isolator configured to connect to one or more electrical starting-signal wires providing starting signal to one or more cranking motors, a resetting relay electrically connecting to the starting-signal isolator, a programmable logic controller (PLC) electrically connecting to the resetting relay, a supplemental battery relay electrically connecting to the starting-signal isolator and the PLC, a supplemental battery electrically connecting to the supplemental battery relay, and a positive output-terminal electrically connecting to the supplemental battery relay. When an output of the starting-signal isolator is higher than a threshold voltage, the resetting relay and the supplemental battery relay are configured to be in a close state, so that the supplemental starting system is configured to provide electricity to one of the one or more cranking motors.

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.

A method of controlling charging of a battery may include making, by a controller, the battery that supplies power to a drive motor start to be charged with a boosted voltage higher than a voltage of a fast charger by controlling a switch connecting the drive motor and the fast charger of a vehicle and a switch of an inverter driving the drive motor, for fast charging of the battery; determining, by the controller, whether a motor position sensor has failure according to an output signal of the motor position sensor which detects a position of the drive motor; engaging, by the controller, an engine clutch that is configured to connect or disconnect the engine of the vehicle and the drive motor, when the controller determines that the motor position sensor has the failure; and maintaining, by the controller, the fast charging for the battery when a rotation of the drive motor stops after the engine clutch is engaged.