Submitted by neonpablo t3_z6484n in explainlikeimfive
AAVale t1_ixzihsc wrote
Reply to comment by neonpablo in ELI5 how automatic cars avoid chewing up first gear by neonpablo
Specifically the torque converter uses a fluid coupling: https://en.wikipedia.org/wiki/Fluid_coupling
It's a good read!
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