Dual-mode hybrid track-type vehicle powertrain design using planetary gear sets
QIN Zhaobo1, LUO Yugong1,2, XIE Laiqing1, CHEN Wenqiang1, LI Keqiang1
1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;
2. Collaborative Innovation Centre for Electric Vehicles, Beijing 100081, China
Abstract：This paper presents a powertrain design for hybrid track-type vehicles based on planetary gear sets. The design uses a three planetary gear set structure with two operating modes for the best fuel efficiency while improving the straight driving performance and the steering performance. This design eliminates the complex steering shaft while ensuring the steering index and improving steering efficiency compared with current powertrain designs. An automated modelling method is used to analyze all the candidate designs. The designs are screened using dynamic programming to analyze the fuel economy to select the best one with the least fuel consumption. Simulations indicate that the design has better performance and fuel economy than the current series hybrid benchmark for the track-type vehicle powertrain design.
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2018, Vol. 58 
