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Low-emission hydraulic hybrid for passenger cars

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Two new technologies, the “floating cup”-principle and a new hydraulic transformer, allow the complete substitution of the mechanical drive of a passenger car for a series hydraulic hybrid transmission. The new “Hydrid” power train from Innas and the RWTH Aachen University reduces the fuel consumption of a medium-sized car by 50 %. The CO2 emissions are reduced to 82 g/km, a level far below the EU-limit for the year 2012 (120 g/km).

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Correspondence to Dr.-Ing. Peter Achten.

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Achten, P., Vael, G., Murrenhoff, H. et al. Low-emission hydraulic hybrid for passenger cars. ATZ Worldw 111, 44–50 (2009).

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  • Energy Storage System
  • Drive Train
  • Hydraulic Motor
  • Pressure Relief Valve
  • Wheel Torque