Energy management strategy for a power-split hydraulic hybrid wheel loader

Feng Wang, Mohd Azrin Mohd Zulkefli, Zongxuan Sun, Kim A. Stelson

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Energy management strategies for a power-split hydraulic hybrid wheel loader are studied in this paper. The differences between the powertrain and the energy management system for on-road vehicles and the powertrain and the energy management system for off-road vehicles are first identified. Unlike on-road vehicles where the engine powers only the drivetrain, the engine in a wheel loader powers both the drivetrain and the working hydraulic system. In a non-hybrid wheel loader, the two subsystems interfere with each other since they share the same engine shaft. By using a power-split powertrain, this not only allows for optimal engine operation and regenerative braking but also greatly reduces the interference between the drivetrain and the working functions. An energy management strategy based on dynamic programming is developed to give full system optimization including both the drivetrain and the working functions. Both a long loading cycle and a short loading cycle are studied in this paper. The dynamic-programming-based strategy is compared with a rule-based strategy using simulation studies.

Original languageEnglish (US)
Pages (from-to)1105-1120
Number of pages16
JournalProceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
Volume230
Issue number8
DOIs
StatePublished - Jul 1 2016

Fingerprint

Loaders
Energy management
Powertrains
Wheels
Hydraulics
Engines
Energy management systems
Dynamic programming
Off road vehicles
Regenerative braking

Keywords

  • Energy management strategy
  • dynamic programming
  • hydraulic hybrid wheel loader
  • off-road construction machinery
  • power-split powertrain

Cite this

Energy management strategy for a power-split hydraulic hybrid wheel loader. / Wang, Feng; Mohd Zulkefli, Mohd Azrin; Sun, Zongxuan; Stelson, Kim A.

In: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 230, No. 8, 01.07.2016, p. 1105-1120.

Research output: Contribution to journalArticle

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