Quote:
Originally Posted by Hersbird
I think it stays unlocked not to prevent failure but because it adds torque multiplication. Adding torque like a reduction gear at the expense of efficiency.
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Correct me if I am wrong, but my understanding is that the torque converter basically only multiplies torque from a stop or when trying to accelerate hard in a high gear.
I remember reading somewhere that a torque converter needs at least a 500 RPM difference between input and output speed (slip) to multiply torque, so any less than that just wastes energy from my understanding.