Internal combustion engine cooling device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 20, 2020
Grant Date -
Jul 30, 2020
app pub date -
Dec 4, 2019
filing date -
Jan 25, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully