Engine cooling system, electronic thermostat control system and control method for the same
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United States of America Patent
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Sep 3, 2019
Grant Date -
Nov 9, 2017
app pub date -
Jul 26, 2017
filing date -
Apr 10, 2012
priority date (Note) -
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Abstract
An electronic thermostat control system may include a control duty determination portion outputting PWM duty signal for controlling the coolant temperature according to a coolant temperature, a rising rate of the coolant temperature, an engine speed, a load and a vehicle speed, a driving portion applying a time condition to the PWM duty signal output by the control duty determination portion for controlling outputting interval, and a fault diagnosis portion diagnosing operations of the electronic thermostat by analyzing the signals output by the driving portion and changes of the coolant temperature.
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