Patent ID: 8521386

Claim:
An automatic idling stop-and-start device for an engine, comprising: an engine control unit that automatically stops the engine when a predetermined stop condition is fulfilled and automatically starts the engine when a predetermined start condition is fulfilled; a brake device that imparts a brake force to a vehicle that carries the engine and holds a brake state by cutting off a compressed air flow by a brake control valve provided between an air tank and a brake actuator; and a brake control unit that holds the brake state produced by the brake device when a predetermined brake hold request condition is fulfilled and releases the brake state produced by the brake device when a predetermined brake release condition is fulfilled, wherein the brake hold request condition is fulfilled when a push-down amount of a foot brake is equal to or larger than a predetermined amount, in order to restart the engine after the engine has stopped automatically, and the engine control unit determines whether the brake device holds the brake state by cutting off the compressed air flow, and automatically starts the engine when the determination is affirmed.