Patent ID: 9043119
Filing Date: 2015-05-26
Classification: F02D,F02N,Y02T

Abstract:
1. An idle stop control device for performing control to transit to an idle stop state at which an operation of an internal-combustion engine is stopped when a predetermined condition is established, the idle stop control device comprising: an information delivery unit for delivering information between components of an electric power steering system which comprises: a control unit for performing an idle stop control by using the information obtained via the information delivery unit, wherein: the control unit is configured to recognize a predetermined range of the steering torque and the rotational speed of the output shaft within which a handle reaction force of the power steering device will be relieved, said predetermined range being at least partially defined by a predetermined steering torque value and a predetermined rotational speed of the output shaft value, the control unit judges to be none of a state that a steering wheel is stabilized by a user, a state that a steering wheel is steered by a user, and a state that a steering wheel abuts against an end by a user, when the steering torque and the rotational speed of the output shaft become and remain equal to or less than the predetermined values for steering torque and rotational speed of the output shaft for a predetermined time period, thereby making a stopping permitted judgment, and the control unit transits to the idle stop state in response to the stopping permitted judgment which is part of the condition for transiting to the idle stop state, and upon transiting to the idle stop state, the control unit turns off the power steering device.