Engine start control device

An engine start control device applicable to a vehicle, comprising:

• an alternating-current generator starter motor for applying a starting torque to an engine when supplied with electric power from a battery and generating electric power based on rotational power from the engine;
• and
• a controller for carrying out an idling stop control process and a hill start assist control process,
• wherein the idling stop control process is a control process for temporarily stopping the engine if a stopping condition is satisfied and restarting the engine if restarting conditions are satisfied,
• wherein the hill start assist control process is a control process for keeping braking forces for a predetermined time, even if a brake operating member is released while the vehicle is being stopped on an uphill slope,
• wherein the controller restarts the engine if an executing condition for the hill start assist control process is satisfied while the engine is being temporarily stopped according to the idling stop control process,
• wherein the braking forces according to the hill start assist control process are kept by a brake oil pressure module that is energized when supplied with electric power,
• wherein the restarting conditions for the idling stop control process include a plurality of ordinary restarting conditions and a particular restarting condition by way of the executing condition for the hill start assist control process that is to be satisfied while the engine is being temporarily stopped according to the idling stop control process, and
• wherein the controller makes a second predetermined time after the particular restarting condition is satisfied until the controller starts to energize the alternating-current generator starter motor longer than a predetermined time after the ordinary restarting conditions are satisfied until the controller starts to energize the alternating-current generator starter motor.