A hydraulic hybrid powertrain for passenger vehicle is studied in this paper. The hydraulic hybrid powertrain consists of a hydro-mechanical transmission and a hydraulic accumulator. The key component of this hydro-mechanical transmission is a pressure-controlled hydraulic transmission. It combines pumping and motoring function in one unit and is potentially more competitive in terms of both energy efficiency and cost effectiveness than a conventional hydrostatic transmission. By feeding the output flow of the pressure-controlled hydraulic transmission to a variable displacement motor coupled to the transmission output shaft, a more compact and simpler hydro-mechanical transmission is constituted. In this paper the systematic approach of applying the hydraulic hybrid powertrain to a passenger vehicle is studied. A dynamic simulation model is developed in Simulink and the U.S. EPA’s urban cycle is used as the test driving cycle. A rule-based energy management strategy (EMS) for the hydraulic hybrid powertrain has also been developed. The system parameter design, controller design and the energy management strategy are evaluated through simulation.
|Original language||English (US)|
|Title of host publication||ASME/BATH 2017 Symposium on Fluid Power and Motion Control, FPMC 2017|
|Publisher||American Society of Mechanical Engineers|
|State||Published - 2017|
|Event||ASME/BATH 2017 Symposium on Fluid Power and Motion Control, FPMC 2017 - Sarasota, United States|
Duration: Oct 16 2017 → Oct 19 2017
|Name||ASME/BATH 2017 Symposium on Fluid Power and Motion Control, FPMC 2017|
|Other||ASME/BATH 2017 Symposium on Fluid Power and Motion Control, FPMC 2017|
|Period||10/16/17 → 10/19/17|
Bibliographical noteFunding Information:
This research was supported by the State Key Laboratory of Fluid Power and Mechatronic Systems at Zhejiang University.
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