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You know, like with a float?
Oh no! That'd be too simple.
The [C6] Chevrolet Corvette utilizes an algorithm-based low coolant level system which eliminates the need for the coolant level sensor previously positioned inside the surge tank (fig. 12).
The algorithm measures the difference in engine coolant temperature readings over time as a function of engine speed, to determine if the cooling system has a low coolant condition. After vehicle start-up, the ECM sends an engine RPM and engine coolant message through the BCM to the HVAC control head. The HVAC control head uses engine coolant temperature and engine RPM to determine if an increase in coolant temperature is due to a low coolant level condition.
This system is capable of losing 2 full liters of coolant before triggering the Low Coolant warning message. Because the surge tank holds approximately 0.8 liters when filled to the proper level, it's possible that a Low Coolant warning message is not triggered, even though the surge tank is completely dry.
How can you tell when the computer engineers have taken over management from the mechanical engineers?
Wait, what?
ReplyDeleteWho the hell thought this was a good idea?
It's bad enough with a car that has a low coolent sensor that throws a warning when the temperature dips and/or you park on an incline.
This is the same GM that hasn't managed to figure out float-arm-rheostat for fuel level in all the decades I've owned a Chevy.
DeleteAnd the float in the overflow tank on The Biscayne has been stuck since I bought it new in 2000.
The overflow tank was new... Part of the engine swap into the 1991 car.
DeleteGM and Boeing are losing the battle with software.
ReplyDelete