Patent ID: 7085646

Claim:
An auxiliary system for starting an engine, the system comprising: a starter; a power source that supplies electricity to the starter; a load operating means that controls electricity supplied from the power source to the starter; an engine control means that turns the load operating means ON for supplying electricity from the power source to the starter in accordance with electricity supply from a power supply device when the engine is started; an auxiliary electricity supply means that turns the load operating means ON for supplying electricity from the power source to the starter in accordance with electricity supply from the power supply device when the engine is started; wherein when voltage of the power supply device becomes less than a first reset level, the engine control means resets electricity supply to the load operating means, when the auxiliary electricity supply means inputs a signal, which indicates a condition where the engine control means starts the engine, the auxiliary electricity supply means supplies electricity to the load operating means at a timing simultaneously with or in advance of supplying electricity to the load operating means by the engine control means, and when the engine control means resets electricity supply to the load operating means, the auxiliary electricity supply means supplies electricity to the load operating means instead of the engine control means.