Thermostat abnormality determining device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 13, 2019
Grant Date -
Apr 26, 2018
app pub date -
Feb 26, 2016
filing date -
May 26, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This thermostat abnormality determining device includes a cooling water temperature sensor, an estimated temperature calculating unit and a determining unit. The cooling water temperature sensor detects the temperature of cooling water that cools an engine. The estimated temperature calculating unit calculates an estimated temperature, which is an estimated value of the temperature of the cooling water. The determining unit determines if the thermostat has become stuck open after warming-up of the engine is complete. The criteria whereby the determining unit determines that the thermostat has become stuck open are that the estimated temperature is higher than a stuck-open determining temperature, which is a temperature lower than a warm-up completion temperature indicating that warming-up of the engine is complete, and that the cooling water temperature, which is the value detected by the cooling water temperature sensor, has been continuously at or below the stuck-open determining temperature for a determination period.
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