A starting control device for an internal combustion engine is provided with a hard cranking device and a soft cranking device that are respectively capable of and incapable of cranking the internal combustion engine to a target idle rotation speed. The starting control device includes: a starting mode determination unit determining whether to carry out starting in a non-combustion pressure mode whereby starting is carried out with the hard cranking device, or in a combustion pressure combination mode whereby starting is carried out through cranking with the soft cranking device while using a combustion pressure generated by supplying fuel to the internal combustion engine in combination; and an intake air amount control unit making an amount of intake air during cranking differ between a case where starting is carried out in the non-combustion pressure mode and a case where starting is carried out in the combustion pressure combination mode.

A motor vehicle having a jump-start device is equipped with an internal combustion engine with a starter motor, and at least two on-board electrical power subsystems which are coupled together via an electric coupling element. Each on-board electrical power subsystem has at least one rechargeable electrical energy storage device. The motor vehicle has a jump-start support terminal, wherein the jump-starting device has a multi-stage jump-start switch. The on-board electrical power subsystems and the jump-starting support terminal are galvanically isolated when a first switching stage of the jump-start switch is selected, and the on-board electrical power subsystems and the jump-starting support terminal are galvanically connected when a second switching stage of the jump-start switch is selected.

In a method for actuating a starting device for an internal combustion engine, for the case in which the rotational speed of the toothed ring is below a limit value, first a stroke armature in a starter relay is moved and an electric starter motor is switched on after the starter pinion has engaged. If the rotational speed of the toothed ring exceeds the limit value, the starter motor is switched on before the starter pinion contacts the toothed ring.

An engine starting apparatus is provided which is equipped with a starter, an inrush current reducer, and a starter mode switch. The inrush current reducer works to reduce an inrush current flowing through an electric motor installed in the starter when the electric motor is energized. The starter mode switch works to change a starter characteristic that is an output characteristic of the starter continuously or selectively at least between a low-torque/high-speed mode and a high-torque/low-speed mode. The starter mode switch places the starter in the high-torque/low-speed mode at least at a time when a piston of the engine is passing a top dead center, and the engine friction has been just maximized for the first time after the starter is actuated to crank the engine. This shortens a period of time required to start up the engine without sacrificing beneficial effects offered by the inrush current reducer.

The present disclosure relates to a vehicle electricity storage device capable of maintaining proper backup of a main power supply. The vehicle electricity storage device includes an electricity storage circuit, a main charge circuit, and a precharge circuit. The electricity storage circuit configured to supply stored electricity to a load. The main charge circuit operates to supply electricity of a main power supply to the electricity storage circuit when an ignition switch is in an ON state of allowing an engine to start. The precharge circuit operates to supply electricity of the main power supply to the electricity storage circuit when the main charge circuit is in a state of stopping operation by the ignition switch being turned off.

A system for starting an internal combustion engine includes a battery system, a charger to receive DC battery power from the battery system and convert the power to a DC charging current, a supercapacitor array having a plurality of supercapacitor cells connected to the charger to receive the DC charging current therefrom, and a motor starter to start the internal combustion engine responsive to a DC input from the supercapacitor array. The charger modifies a voltage of the supercapacitor cells in an on-demand fashion, with the charger programmed to provide DC charging current to the supercapacitor array to hold the supercapacitor cells at a first voltage, receive a bump-up command indicative of an upcoming engine start and, responsive to receiving the bump-up command, provide DC charging current to the supercapacitor array to increase a voltage of the supercapacitor cells temporarily to a second voltage higher than the first voltage.

A starter system including a motor, a solenoid assembly having a solenoid switch, a pinion rotated by the motor and moveable into an engaging position in which an engine may be cranked and the solenoid switch is closed to energize the motor from an electric power source, and relay switch regulated by a controller and closed to apply electrical power to the solenoid assembly for actuating the solenoid switch. The controller repeatedly opens and closes relay switch during a starting operation if sensed motor energization voltage monitored by the controller falls below a predetermined threshold level within a predetermined time period after electrical power is applied to the solenoid assembly, whereby electrical power applications to the solenoid assembly are automatically repeated during a starting operation to correct “click-no-crank” events and prevent prolonged power application to the solenoid assembly. A related method is also disclosed.

A power system for a locomotive. The power system includes an alternator, a first inverter system, a traction motor, a second inverter system and an auxiliary power unit. The first inverter system is coupled to the alternator and receives high voltage power from the alternator. The traction motor is coupled to the first inverter system receives high voltage power from the first inverter system. The second inverter system is also coupled to the alternator. The second inverter system steps down the high voltage power from the alternator. The auxiliary power unit is coupled to the second inverter system and receives the stepped down voltage power from the second inverter system.

A method of starting an aircraft having at least a first starter/generator (S/G) and a second S/G using at least one inverter/converter and at least one of an AC power source and a first DC power source, the method includes selectively starting at least one of the first S/G or second S/G in an AC start mode and in a DC start mode.

Method for voltage stabilization during an engine starting event of a vehicle includes receiving, at a switch device module, an active Start_ON signal from a starter solenoid module indicating initiation of the engine starting event. At the switch device module, an auxiliary electrical energy storage device (ESD) is electrically coupled to one or more auxiliary loads within a predetermined delay since the active Start_ON signal was received. A primary ESD and a starter motor are electrically decoupled from the one or more auxiliary loads only after the auxiliary ESD has been electrically coupled to the one or more auxiliary loads. In response to a predetermined condition occurring while the primary ESD and the starter motor are electrically decoupled from the one or more auxiliary loads, the primary ESD and the starter motor are electrically coupled to the one or more auxiliary loads.