Quote:
Originally Posted by Peter7307
I recall reading of a similar method for regen using high pressure hydraulics...
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And indeed, hydraulic hybrid systems are in commercial production. They're currently aimed at applications that do a lot of stop & go, and also use hydraulics for other functions, like this garbage truck:
Autocar launches E3 hydraulic hybrid garbage truck
As for the hybrid bus, I wonder why they don't put overhead charging contacts (like for the electric tram systems that are used in many European cities) at the bus stops.