DRIVE SYSTEM FOR A HYBRID OR ELECTRIC VEHICLE

    公开(公告)号:US20220410724A1

    公开(公告)日:2022-12-29

    申请号:US17770880

    申请日:2020-10-23

    Abstract: A drive system for a hybrid or electric vehicle includes an electrical energy source; an electric machine, a switching device linked to the electric machine and selectively switchable between a first configuration, and a second configuration, an adjusting device linked to the electric machine and configured to vary its operating parameters, and a control unit. The first electrical configuration includes a first number of conductors in series by phase supplying a first driving torque with a first knee speed and a first no-load operation speed. The second electrical configuration includes a second number of conductors in series by phase supplying a second driving torque, lower than the first driving torque, and a second knee speed higher than the first knee speed. A ratio between the first no-load operation speed and the second knee speed is between 0.7 and 1.3.

    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.

    AN ELECTRIC OR HYBRID ELECTRIC-ENDOTHERMIC TRACTION SYSTEM AND A RECONFIGURATION METHOD FOR AN ELECTRIC MACHINE

    公开(公告)号:US20250033483A1

    公开(公告)日:2025-01-30

    申请号:US18709478

    申请日:2022-11-10

    Abstract: An electric or hybrid electric-endothermic traction system, comprises an electric machine, an inverter, a battery, and a switching device configured to switch between a low-speed configuration, wherein the stator windings assume a first electric configuration, and a high-speed configuration, wherein the stator windings assume a second electric configuration, wherein the first electric configuration determines a voltage induced by the rotation of the rotor that, on reaching a pre-determined threshold value of the angular velocity of the rotor, exceeds a supply voltage of the battery pack, while the second electric configuration of the stator windings determines a voltage induced by the rotation of the rotor that is lower than the voltage of the battery for any angular velocity within a field of use of the machine. The switching device switches from the low-speed to the high-speed configuration when the rotor reaches a switching speed lower than or equal to the threshold value.

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