公开(公告)号：US10808596B2

公开(公告)日：2020-10-20

申请号：US16703138

申请日：2019-12-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihiro Furuya

IPC: F01P7/14 ,  F16K31/04 ,  G01L3/00 ,  G01P3/44 ,  G01P15/16

Abstract: A cooling device of an internal combustion engine includes a control valve that regulates the flow of a cooling liquid in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling driving of a motor of the control valve; determining whether or not the shifting speed of a valve body of the control valve has decreased rapidly; calculating a motor torque based on an effective voltage applied to the motor; deriving a collision factor based on a smoothed angular speed value; and when the electronic control unit determines that the shifting speed of the valve body has decreased rapidly, calculating a rapid-decrease-caused stress so as to become larger as a product of the motor torque and the collision factor becomes larger.

公开(公告)号：US10371115B2

公开(公告)日：2019-08-06

申请号：US15173240

申请日：2016-06-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeshi Kitayama ,  Yoshiyuki Yamashita ,  Yoshihiro Furuya ,  Hiroki Murata

IPC: F02P5/15 ,  F01P7/04 ,  F01P7/16 ,  F02P5/152 ,  F02P17/12 ,  F02D41/06 ,  F01P3/02 ,  F01P5/10 ,  F01P5/12

Abstract: A control device for an internal combustion engine includes a knock control system, a cooling system, and an electronic control unit. The knock control system is configured to ignite a spark plug an ignition crank angle obtained by retarding the ignition crank angle in response to an occurrence of the knocking. The electronic control unit is configured to supply a command value corresponding to a target value of a cooling parameter to the cooling system such that the cooling system performs cooling of the internal combustion engine according to the command value. The electronic control unit is configured to correct the command value based on a KCS learned value such that as the KCS learned value increases, a correction amount for correcting the command value increases in correction amount in a direction in which a cooling capacity of the cooling system increases.