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Apparatus and method for controlling start sequence of engine for vehicle

  • US 10,550,818 B2
  • Filed: 12/12/2017
  • Issued: 02/04/2020
  • Est. Priority Date: 04/12/2017
  • Status: Active Grant
First Claim
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1. An apparatus for controlling a start sequence of an engine for a vehicle, the apparatus comprising:

  • the engine;

    a motor configured to start the engine;

    a main switch configured to connect power to the motor or interrupt the power to the supplied to the motor;

    a main battery configured to supply the power to the motor by the main switch;

    a converter configured to step up a voltage of the motor by boosting reverse power through a reverse control operation;

    an auxiliary battery configured to supply the reverse power; and

    a converter controller configured to perform a pre-charging operation for a predetermined time period through the reverse control operation in response to an ignition-ON signal being inputted, close the main switch to connect the main battery to the motor electrically when the pre-charging operation is completed and the stepping up the voltage is completed, and operate the motor so that the engine starts in response to a key start signal being inputted after the pre-charging operation has been completed.

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