Title:
COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2020118117
Kind Code:
A
Abstract:
To provide a cooling device for an internal combustion engine capable of calculating stress that a gear undergoes while a motor is driving.SOLUTION: A cooling device 20 comprises: a control valve 26 which regulates a cooling water flow in a circulation circuit 21; a motor control section 51 which controls drive of a motor 37 of the control valve 26; a motor torque calculation section 57 which calculates motor torque on the basis of effective voltage applied to the motor 37; a valve body torque calculation section 61 which calculates valve body torque among several types of motor torque on the basis of an angular speed of the motor 37; and a drive time stress calculation section 62 which calculates drive time stress on the basis of a difference between the motor torque and the valve body torque.SELECTED DRAWING: Figure 1
Inventors:
FURUYA KEIHIRO
Application Number:
JP2019011406A
Publication Date:
August 06, 2020
Filing Date:
January 25, 2019
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01P7/16; F16K37/00; H02P29/032
Domestic Patent References:
| JPH08270487A | 1996-10-15 | |||
| JPH11193729A | 1999-07-21 | |||
| JP2011122505A | 2011-06-23 | |||
| JP2014219088A | 2014-11-20 | |||
| JP2018040289A | 2018-03-15 | |||
| JP2018148690A | 2018-09-20 |
Foreign References:
| US20090314074A1 | 2009-12-24 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda