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If Hydraulic Hybrid technology has been around for decades, why hasn’t it been used for on-road vehicles?

April 26, 2017decades hybrid hydraulic on-road Technology Used vehicles

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If Hydraulic Hybrid technology has been around for decades, why hasn’t it been used for on-road vehicles?

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Recently, there have been a number of very significant improvements to hydraulic technology which enable it to be used in on-road applications. For example, carbon fiber has reduced the weight of high pressure accumulators by nearly a factor of 10. Additionally, powerful hydraulic pump/motors have become smaller and lighter. Finally, advances in technology have created the microcomputers necessary to control advanced vehicle drive trains.