Method and system for starting automotive internal combustion engine

An internal combustion engine starting system comprising:

• starter motor means adapted to be rotated in both forward and reverse directions to start an internal combustion engine;
• means for measuring a crank angle of said internal combustion engine;
• means for controlling said starter motor means according to the measured crank angle;
• and
• wherein said controlling means determines whether reverse rotation of said starter motor means is performed by a desired angular interval of rotation according to said measured crank angle after preliminary reverse rotation of said starter motor means is initially performed when a starting command is first received, and then said controlling means directs forward rotation of said starter motor means in the forward direction.

An internal combustion engine starting system comprising:

• starter motor means adapted to be rotated in forward and reverse directions to start an internal combustion engine;
• means for measuring a crank angle of said internal combustion engine;
• means for controlling said starter motor means according to said crank angle;
• and
• wherein said controlling means determines whether a direction of forward rotation of said internal combustion engine is in a direction of load torque decrease or the direction of load torque increase according to the crank angle obtained from said measuring means at the time of a start command, and directs forward rotation after carrying out preliminary reverse rotation when said direction of forward rotation is the direction in which load torque increases.