POWER FACTOR CORRECTION DEVICE AND APPARATUS FOR CONVERTING A THREE-PHASE ALTERNATING CURRENT INTO A DIRECT CURRENT

    公开(公告)号:US20240120832A1

    公开(公告)日:2024-04-11

    申请号:US18263844

    申请日:2022-01-31

    CPC classification number: H02M1/4233 H02J7/0013 H02J7/345 H02M1/12 H02M7/04

    Abstract: A power factor correction device includes a power supply side which can be connected to an alternating current source, an output side which can be connected to a direct current load, at least a first power inductor electrically connected in series to a first terminal of the power supply side, and a rectifier operatively interposed between the power supply side and the output side. The rectifier includes a diode bridge configured to convert the alternating current from the source into a direct current towards the load, and one or more switches which can be selectively switched between an open configuration and a closed configuration in order to switch the rectifier between a first configuration, in which it interrupts the current flow towards the output side and charges the first inductor, and a second configuration, in which it allows the transfer of current to the load and discharges the first inductor. A second power inductor is electrically connected in series to a second terminal of the power supply side.

    ELECTRONIC IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND CONTROL METHOD FOR SAID ELECTRONIC IGNITION SYSTEM

    公开(公告)号:US20180298869A1

    公开(公告)日:2018-10-18

    申请号:US15574082

    申请日:2016-04-21

    Abstract: An electronic ignition system for an internal combustion engine. The system includes an ignition coil provided with at least a primary winding and a secondary winding, a switch connected to the primary winding and drivable to be in an opened and/or closed position according to a value of a driving signal, a control unit associated to the switch and configured to drive the switch to be in the open position and/or closed position according to the value of the driving signal (G). The system may also include current detection means associated with the secondary winding, in which the control unit is associated with the detection means for receiving a signal representative of at least a current value in the secondary winding, and configured to control the switch according to said signal.

    A METHOD AND DEVICE FOR HEATING AN EXHAUST PIPE IN A MOTOR VEHICLE

    公开(公告)号:US20240102409A1

    公开(公告)日:2024-03-28

    申请号:US18263867

    申请日:2022-01-31

    CPC classification number: F01N3/2033 F01N9/00 F01N2240/14

    Abstract: A method for heating an exhaust pipe in a motor vehicle, including a plurality of spark cycles performed in succession at a preset frequency, wherein each spark cycle includes injecting a-preset fuel quantity into an injection area inside of an exhaust pipe in a motor vehicle and generating at least one spark between the ends of a pair of electrodes located in proximity to the injection area in order to start combustion.
    Thus, a value of an ionization current flowing between the ends of the pair of electrodes is detected following the extinction of the spark and this ionization current value is compared with a preset reference value.
    Therefore, the presence of combustion in the spark cycle is determined, if the ionization current value is greater than the preset reference value, or the absence of combustion in the spark cycle, if the ionization current value is lower than the preset reference value.

    ELECTRONIC DEVICE TO CONTROL AN IGNITION COIL OF AN INTERNAL COMBUSTION ENGINE AND ELECTRONIC IGNITION SYSTEM THEREOF FOR DETECTING A PRE-IGNITION IN THE INTERNAL COMBUSTION ENGINE

    公开(公告)号:US20220136477A1

    公开(公告)日:2022-05-05

    申请号:US17429205

    申请日:2020-02-19

    Abstract: It is disclosed an electronic device to control an ignition coil of an internal combustion engine comprising a high-voltage switch, a driving unit, a bias circuit and an integrating circuit. The high-voltage switch is connected in series with a primary winding of a coil. The driving unit is configured to control the closing and opening of the high-voltage switch. The integrating circuit is interposed between the bias circuit and a reference voltage. The integrating circuit comprises an integrating capacitor. The integrating capacitor is configured, in the case wherein a pre-ignition of the comburent-combustible mixture in the combustion chamber during the phase of charging occurs, to pre-charge during the phase of charging energy in the primary winding and it is configured, in the case wherein the pre-ignition of the comburent-combustible mixture does not occur, to maintain the charge state substantially constant during the phase of charging energy.

Patent Agency Ranking