公开(公告)号：US20080066700A1

公开(公告)日：2008-03-20

申请号：US11846983

申请日：2007-08-29

申请人： Zenichiro MASHIKI ,  Yasumichi INOUE ,  Masayoshi HATTORI ,  Noboru TAKAGI ,  Haruyuki URUSHIHATA ,  Masaomi INOUE ,  Yuuichi TAKEMURA ,  Toshikazu TANAKA

发明人： Zenichiro MASHIKI ,  Yasumichi INOUE ,  Masayoshi HATTORI ,  Noboru TAKAGI ,  Haruyuki URUSHIHATA ,  Masaomi INOUE ,  Yuuichi TAKEMURA ,  Toshikazu TANAKA

IPC分类号： F02D13/02 ,  F01L1/34 ,  F01L9/04

CPC分类号： F01L1/352 ,  F01L1/022 ,  F01L1/026 ,  F01L2001/0537 ,  F01L2800/00 ,  F01L2820/032 ,  F01L2820/041 ,  F01L2820/042 ,  F02D13/0238 ,  Y02T10/18

摘要： An actuator operation amount setting unit prepares the rotational speed command value for an electric motor such that the phase of an intake valve changes in accordance with the target phase. An electric-motor EDU controls the motor supply electric power such that the electric motor operates in accordance with the rotational speed command value. An overheating determination unit determines whether at least one of the electric motor and the electric-motor EDU needs to be restricted from heating up based on a result of comparison between the information indicating the motor supply electric power and the reference value. A rotational speed command value restriction unit restricts the rotational speed command value provided to the electric-motor EDU to a value within a predetermined range, when it is determined that the at least one of the electric motor and the electric-motor EDU needs to be restricted from heating up. A reference value setting unit variably sets the reference value based on the rotational speed of the electric motor.

摘要翻译： 致动器操作量设定单元准备电动机的转速指令值，使得进气阀的相位根据目标相位而变化。 电动机EDU控制电动机供电电力，使得电动机根据转速指令值进行动作。 过热判定单元基于表示电动机供给电力的信息与基准值之间的比较结果来判定是否需要限制电动机和电动机EDU中的至少一个加热。 旋转速度指令值限制单元将电动机EDU的转速指令值限制在规定范围内的值时，判断为电动机和电动机EDU中的至少一个需要为 限制加热。 参考值设定单元基于电动机的转速可变地设定基准值。