Braking energy recuperation characteristics of hydraulic hybrid powertrain with dual-planetary gear sets

作者：Du Jiuyu^*; Huang Haiyan; Wang Hewu

来源：Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(1): 42-49.

DOI：10.3969/j.issn.1002-6819.2012.01.009

• Braking conditions
• Braking energy
• Control strategies
• Driving cycle
• Energy saving potential
• Fuel saving ratio
• Gear set
• Hybrid scheme
• Hybrid-electric powertrain
• Hydraulic hybrid vehicles
• Hydraulic hybrids
• Hydraulic units
• Mathematic model
• Power flows
• Power splits
• Regenerative braking

Hydraulic hybrid powertrain has more energy saving potential than that of hybrid electric powertrain under urban driving cycle characterized as higher braking energy ratio and frequent stop-and-start operation. A new type of compound power split hybrid powertrain scheme with dual-planetary was developed in the paper. The characteristics of system power flow under braking condition were analyzed and basis control strategy was proposed. Power flow modes of hydraulic units were analyzed. The dynamic mathematic model was set up to simulate performance of the hydraulic hybrid vehicle under UDDS based on the basic control strategy. The results showed that 28% energy saving on average could be achieved.

• 出版日期2012
• 单位清华大学