Abstract
The hydraulic hybridization of the hydromechanical transmission is an interesting solution to reduce fuel consumption in heavy duty machinery, thanks to the high power peaks recovered in the braking phase and the low cost technology involved. However, hybridization must be carefully considered, as there is no optimal configuration for all applications. For this reason, the design of a hydromechanical transmission must be developed on the basis of the specific data of the vehicle and must tend to optimization. Following this concept, the optimal layout of the hybrid Output Coupled configuration for a particular vehicle application, the reach stacker, was studied in this work. The study will be carried out in two steps: first the optimal layout will be sought based on the continuous formulation of the planetary gear. Subsequently, based on the design parameters obtained, the models of the non-hybrid and hybrid transmission will be simulated for a functional and energy comparison.The hydraulic hybridization of the hydromechanical transmission is an interesting solution to reduce fuel consumption in heavy duty machinery, thanks to the high power peaks recovered in the braking phase and the low cost technology involved. However, hybridization must be carefully considered, as there is no optimal configuration for all applications. For this reason, the design of a hydromechanical transmission must be developed on the basis of the specific data of the vehicle and must tend to optimization. Following this concept, the optimal layout of the hybrid Output Coupled configuration for a particular vehicle application, the reach stacker, was studied in this work. The study will be carried out in two steps: first the optimal layout will be sought based on the continuous formulation of the planetary gear. Subsequently, based on the design parameters obtained, the models of the non-hybrid and hybrid transmission will be simulated for a functional and energy comparison.
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