Engine start control system and method

An engine start control system, comprising:

• idle stop controlling means for stopping an engine upon establishment of a predetermined condition and configured to restart, by a throttle operation at the time of starting the engine, using a starting switch;
• fuel injecting means for performing a simultaneous fuel injection until completion of a stroke discrimination;
• igniting means for igniting at a preset fixed timing every one revolution of a crankshaft;
• and
• storing means for storing, during execution of the idle stop controlling means, a result of the stroke discrimination after initiating the engine starting,
• wherein, after completion of the stroke discrimination, the engine start control system is configured to perform a fuel injection and ignition control once every two revolutions of the crankshaft, and
• wherein, at the time of restarting the engine by the idle stop controlling means, the result of the stroke discrimination stored in the storage unit is used, instead of conducting a new stroke discrimination, thereby driving the fuel injecting means and the igniting means.

A method, comprising:

• stopping an engine upon establishment of a predetermined condition;
• restarting, by a throttle operation at the time of starting the engine, using a starting switch;
• performing simultaneous fuel injection until completion of a stroke discrimination;
• igniting at a preset fixed timing every one revolution of a crankshaft;
• storing, during execution of the idle stop control, a result of the stroke discrimination after initiating the engine starting;
• after completion of the stroke discrimination, performing a fuel injection and ignition control once every two revolutions of the crankshaft;
• and
• at the time of restarting the engine by the idle stop control, using the result of the stroke discrimination stored in the storage unit, instead of conducting a new stroke discrimination, thereby driving the fuel injection system and the ignition device.