Patent ID: 7860637
Filing Date: 2010-12-28
Classification: F02D,F02N,F02P,Y02T

Abstract:
1. An eco-run control device that is mounted on a vehicle and is capable of performing eco-run control to stop an engine if predetermined stop requirements are satisfied, and to restart the engine if predetermined start requirements are later satisfied, the eco-run control device comprising: at least one first type control unit having power supplied thereto in accordance with a state of an ignition; at least one second type control unit having power supplied thereto in accordance with a state of an ACC; a start control unit that, when the power supplied to the at least one first type control unit or the power supplied to the at least one second type control unit is turned from off to on, performs a start control operation on the engine if the start control unit receives an eco-run prohibiting request from the at least one first type control unit or from the at least one second type control unit; a main relay unit that continues the power supply to the eco-run control device for a predetermined period of time even after the ignition is turned off; a determining unit that receives an ignition state signal from a predetermined signal line and determines a state of the ignition as being off when the received ignition state signal indicates that the ignition is off, based on whether signals from at least two of the control devices of the first type are interrupted; and a prohibiting unit that prohibits the reception of the eco-run prohibiting request even when the at least one first type control unit or the at least one second type control unit sends the eco-run prohibiting request after the ignition detection unit determines that the ignition is off, and prevents the engine from being started by the start control unit.