A power system with an electric rotating machine providing an operation of power generation and power running, a switching circuit providing electricity for each phase, by switching a plurality switching elements ON/OFF by the electric rotating machine, a battery section connected to the switching circuit, and switches on electrical pathway, between the switching circuit and the battery section. A power shutoff section to shutoff an electrical pathway when an overcurrent flows in, at least one of the electric rotating machine and the switching circuit. Power control devices are provided with an overcurrent determination which determines that an overcurrent has occurred, based on results of, a first determination that determines a current flow has increased to a predetermined over current threshold, and a second determination that determines that current flow has decreased thereafter, and a switch control that switches the switches open based on a determined result of the overcurrent determination.

Systems and methods for preventing activation of a starter when engine speed is above a threshold engine speed value are disclosed. In examples, an engine driven power system includes an engine and a current transformer to generate an induced current in response to an excitation current from an excitation circuit. As the excitation current is induced in response to rotational movement of the engine, the excitation current and the induced current exhibits characteristics corresponding to engine speed. A control circuit receives a signal from the current transformer representing characteristics representative of engine speed and determines the engine speed, compares the characteristics to a list of values that correlates current characteristics to engine speed, compare a list of threshold engine speed values to the calculated engine speed value, and prevents activation of an engine starter if the control circuitry determines that the engine speed exceeds the threshold engine speed value.

An idling stop control device includes an authenticator, a storage, a getting-off detector, and an engine restart permitter. The authenticator is installed in a vehicle, performs authentication via a wireless communication with a mobile device, and repeatedly performs, while the vehicle travels, an authentication operation at predetermined intervals. The storage stores result and time of authentication as the authentication history during travel. The engine restart permitter determines permission or prohibition of restart of the engine in accordance with the authentication history and getting-off information, permits restart of the engine when the authentication is successful and permits, in a case where the authentication fails, restart of the engine when a history of success of authentication has been stored in the storage during travel and the getting-off is not detected after the authentication has been successful.

A rechargeable battery jump starting device with a discharged battery pre-conditioning system to facilitate boosting the discharged battery to jump start a vehicle or equipment engine. The pre-conditioning increases the operating voltage to the discharged battery during the pre-conditioning phase.

An electronic ignition system for a portable gasoline tool includes a voltage boosting device, a spark plug connected with an output of the voltage boosting device, a DC power source, and a controller electrically connected with the DC power source and connected with the voltage boosting device. The controller controls an ignition voltage and an ignition advance angle. A related portable gasoline tool includes a body, a cylinder located in the body, a piston movable to and fro within the cylinder, a crankshaft co-moved with the piston, and a flywheel located on the body and driven by the crankshaft to rotate.

This bobbin includes: a cylindrical winding portion, a first partition portion and a second partition portion, wherein the first partition portion has lead-in cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively introduced, and lead-out cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively led out, and the first partition portion has, on a winding portion side thereof, a step formed in a zone including a range between the lead-out cutout portion for the coil wire to be wound on the lower side and the lead-in cutout portion for the coil wire to be wound on the upper side.

An idling stop control device includes an authenticator, a storage, a getting-off detector, and an engine restart permitter. The authenticator is installed in a vehicle, performs authentication via a wireless communication with a mobile device, and repeatedly performs, while the vehicle travels, an authentication operation at predetermined intervals. The storage stores result and time of authentication as the authentication history during travel. The engine restart permitter determines permission or prohibition of restart of the engine in accordance with the authentication history and getting-off information, permits restart of the engine when the authentication is successful and permits, in a case where the authentication fails, restart of the engine when a history of success of authentication has been stored in the storage during travel and the getting-off is not detected after the authentication has been successful.

An electronic ignition system for a portable gasoline tool includes a voltage boosting device, a spark plug connected with an output of the voltage boosting device, a DC power source, and a controller electrically connected with the DC power source and connected with the voltage boosting device. The controller controls an ignition voltage and an ignition advance angle. A related portable gasoline tool includes a body, a cylinder located in the body, a piston movable to and fro within the cylinder, a crankshaft co-moved with the piston, and a flywheel located on the body and driven by the crankshaft to rotate.

The invention relates to a system for supplying electric power (10) to electrical equipment via a high-performance battery (2) comprising at least one device (LPF) for limiting a current of the high-performance battery. The high-performance battery has a first nominal voltage greater than that of a standard battery initially provided for supplying the equipment, which include an internal combustion engine starter (8) that is connected to the high-performance battery via the limiting device. According to the invention, the limiting device (LPF) is a transformer having a secondary winding circuit (R, W2) formed by a short-circuited secondary winding (W2). According to another feature, the coupling coefficient of the transformer and a secondary resistance of the secondary winding circuit are dependent on the specific characteristics of the equipment.

A diode accommodation core, for use in solenoids of starter engines and accommodation of the diodes in these solenoids without thereby affect the structural configuration of the diodes or the structures of starter engines. The diode accommodation core includes a structural body having opening for the accommodation of body of diode, and two contact sides opposite each other, wherein each side is provided with accommodation guide of the respective terminals of the diode, which has a surface portion in which at least one of the terminals is supported and at least partially exposed regarding the surface of the corresponding contact side of structural body, in order to promote electrical contact with at least one adjacent component by pressure.