★モーターと組み合わされるトランスミッションたち【EV】

モーターのトルクと回転数があれば変速機は不要と一般的には考えられています。
そんなEVにおいて変速機を付け足すことのメリットはどの程度あるのでしょうか。
また、どのタイプの変速機が望ましいのか？日本と欧州のメーカーでみていきます。


参照
https://www.youtube.com/watch?v=qTf-_rHQjkU&t=68s
https://www.youtube.com/watch?v=jNuixuVhc5E&t=138s
https://www.youtube.com/watch?v=36H9BVeMYMI&t=220s
https://www.youtube.com/watch?v=vqpBgrpesik
https://www.youtube.com/watch?v=u_y1S8C0Hmc&t=385s
https://www.youtube.com/watch?v=Nlp4F-L3ECg
https://www.youtube.com/watch?v=JOLtS4VUcvQ&t=475s
https://www.youtube.com/watch?v=3-ilzxawUAs
https://www.youtube.com/watch?v=wCu9W9xNwtI
https://www.youtube.com/watch?v=TUpeMYTj1O8&t=463s
https://www.youtube.com/watch?v=Tkdx0Gc-_tc&t=186s
https://www.youtube.com/watch?v=GHGXy_sjbgQ
https://www.youtube.com/watch?v=xE0d0JtXVLw
https://www.youtube.com/watch?v=YYQayMrK4Fo&t=360s
https://www.youtube.com/watch?v=-qS85aIvleQ
https://www.youtube.com/watch?v=0SATCAZAudE&t=76s
https://www.youtube.com/watch?v=hYNW50x_ogs
https://www.youtube.com/watch?v=r_CwzUeE6ng
https://www.youtube.com/watch?v=G6hCvdW4dKo
https://www.youtube.com/watch?v=TTbqp7FcWQE&t=209s
https://www.youtube.com/watch?v=jkCXdDmP618&t=434s
https://www.youtube.com/watch?v=TMwXTWh8p3k
https://www.youtube.com/watch?v=Gnv4Ab3GyXI
https://www.youtube.com/watch?v=-yXk9Ra6loU
https://www.youtube.com/watch?v=OVRekgj8V0s
https://www.youtube.com/watch?v=meI3AzLigk4
https://www.youtube.com/watch?v=4ONdsVs6yS0&t=451s
https://www.youtube.com/watch?v=DCcGIkd4tQo&t=48s
https://www.youtube.com/watch?v=G0BhwvezCBA
https://www.youtube.com/watch?v=nwEyyIh6IF8
https://www.youtube.com/watch?v=vFBxRKAh_rw
https://www.youtube.com/watch?v=B1AJsUiJuQQ&t=64s
https://www.youtube.com/watch?v=2QZt_ri8xOs
https://www.youtube.com/watch?v=QwXK4e4uqXY&t=27s
https://www.youtube.com/watch?v=AbRny7sIvpI
https://www.youtube.com/watch?v=GiVHimmrxjE
https://www.youtube.com/watch?v=YlYEi0PgG1g
https://www.youtube.com/watch?v=lYZ1ZUPHyK0
https://www.youtube.com/watch?v=TGkeI80pkas
https://www.youtube.com/watch?v=Uxr9ryWZHe4&list=WL&index=26
https://www.youtube.com/watch?v=esUb7Zy5Oio
https://www.youtube.com/watch?v=wFZZ5PICQeo&t=8s
https://www.youtube.com/watch?v=Rotyy6MpmfI
https://www.youtube.com/watch?v=4_yw5ySXDf4
https://www.youtube.com/watch?v=GMkp8APX2Zo
https://www.youtube.com/watch?v=ZB20hKwi6aw
https://www.youtube.com/watch?v=g1LsT1PVjUA
https://www.youtube.com/watch?v=OCgzRbIqHEM
https://www.youtube.com/watch?v=O6LDTPeu8ow
https://www.youtube.com/watch?v=3SAxXUIre28&t=368s
https://www.youtube.com/watch?v=Fr_SSNjuCX8&t=72s
https://www.youtube.com/watch?v=VZJMomMgMjQ&t=55s
https://www.youtube.com/watch?v=jHhw6HPrNZ8&t=115s
https://www.youtube.com/watch?v=6sqY6DoeAkw
https://www.youtube.com/watch?v=oC0zjFWlTG8
https://www.youtube.com/watch?v=W_ArHzpVr9Y
https://www.youtube.com/watch?v=l_MoAum-le4
https://www.youtube.com/watch?v=ULK1W0fyNZQ
https://www.youtube.com/watch?v=tJfERzrG-D8&t=369s
https://www.youtube.com/watch?v=ITCqKjaoROg&list=WL&index=17
https://www.youtube.com/watch?v=oqQmgysI1_M
https://www.youtube.com/watch?v=WvGr0uDKthI
https://www.youtube.com/watch?v=7Fij8W6_wNw
https://www.youtube.com/watch?v=SFyNMoWc9Yg&t=23s
https://www.youtube.com/watch?v=hVzuxDjQIeM&t=368s
https://www.youtube.com/watch?v=wnVl-6dlF5k
https://www.youtube.com/watch?v=b7seEH_2tUE
https://www.youtube.com/watch?v=E9qcJhY9xoE&list=WL&index=11
https://www.youtube.com/watch?v=oq24nK7IjXk&t=12s
https://www.youtube.com/watch?v=yK_jjVo6Y9E
https://www.youtube.com/watch?v=gBqJ4RtWMpc&list=WL&index=21
https://www.youtube.com/watch?v=USqL5G3WcEk&list=WL&index=20
https://www.youtube.com/watch?v=Tj-CMlHTew4
https://www.youtube.com/watch?v=36H9BVeMYMI