Hydro-Pneumatic Driveline for Passenger Car Applications

Paper #:
  • 2014-01-2536

Published:
  • 2014-09-28
DOI:
  • 10.4271/2014-01-2536
Citation:
Boretti, A. and Zanforlin, S., "Hydro-Pneumatic Driveline for Passenger Car Applications," SAE Technical Paper 2014-01-2536, 2014, https://doi.org/10.4271/2014-01-2536.
Pages:
6
Abstract:
Real driving cycles are characterized by a sequence of accelerations, cruises, decelerations and engine idling. Recovering the braking energy is the most effective way to reduce the propulsive energy supply by the thermal engine. The fuel energy saving may be much larger than the propulsive energy saving because the ICE energy supply may be cut where the engine operates less efficiently and because the ICE can be made smaller. The present paper discusses the state of the art of hydro-pneumatic drivelines now becoming popular also for passenger cars and light duty vehicle applications permitting series and parallel hybrid operation. The papers presents the thermal engine operation when a passenger car fitted with the hydro-pneumatic hybrid driveline covers the hot new European driving cycle. From a reference fuel consumption of 4.71 liters/100 km with a traditional driveline, the fuel consumption reduces to 2.91 liters/100 km.
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