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STUDY ON shift schedule OF AUTOMATIC TRANSMISSION TO IMPROVE ENGINEERING VEHICULAR EFFICIENCY

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Chinese Journal of Mechanical Engineering 2004年第1期17卷 124-126页

作者： GongJie ZhaoDingxuan HuangHaidong GongWenbin ChenYing StateKeyLaboratoryofFluidPowerTransmissionandControl ZhejiangUniversityHangzhou310027China CollegeofMechanicalScienceandEngineering JilinUniversityChangchun130025China

New shift schedule for automatic transmission is proposed from the point ofview of saving energy. The bench-test of automatic shift adopting this shift schedule is done onautomatic transmission's test-bed. The experimental results show the shift schedule is correct. Thisshift schedule has enriched the theory of vehicle automatic maneuvering and will improve theefficiency of hydrodynamic drive system of the vehicle.

关键词： Engineering vehicle Automatic transmission shift schedule Saving energy

Study on shift schedule saving energy of automatic transmission of ground vehicles

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Journal of Zhejiang University Science 2004年第7期5卷 878-883页

作者：龚捷赵丁选陈鹰陈宁 CollegeofMechanicalScienceandEngineering JilinUniversityChangchun130025China StateKeyLabofFluidPowerTransmissionandControl ZhejiangUniversityHangzhou310027China

To improve ground vehicle efficiency, shift schedule energy saving was proposed for the ground vehicle automatic transmission by studying the function of the torque converter and transmission in the vehicular drivetrain. The shift schedule can keep the torque converter working in the high efficiency range under all the working conditions except in the low efficiency range on the left when the transmission worked at the lowest shift, and in the low efficiency range on the right when the transmission worked at the highest shift. The shift quality key factors were analysed. The automatic trans-mission's bench-test adopting this shift schedule was made on the automatic transmission's test-bed. The experimental results showed that the shift schedule was correct and that the shift quality was controllable.

关键词： Ground vehicle Hydrodynamic drive Automatic transmission shift schedule Saving energy shift quality

Optimization Design of Double-parameter shift schedule of Tracked Vehicle with Hydrodynamic-mechanical Transmission

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Defence Technology（防务技术） 2011年第3期7卷 135-139页

作者：武景燕魏巍曲婧瑶闫清东 National Key Lab of Vehicular Transmission Beijing Institute of Technology School of Mechanical Engineering Beijing Institute of Technology

A kind of automatic shift schedule optimization method is provided for a tracked vehicle with hydrodynamic-mechanical transmission in order to improve its dynamic performance. A dynamic model of integrated hydrodynamic-mechanical transmission is built in MATLAB/Simdriveline environment, and an optimum shift schedule is derived by using iSight software to call the dynamic model above, then the shift schedule is achieved after optimization. The simulation results show that the method is significant to improve the dynamic performance and gear-shifting smoothness theoretically and practically.

关键词： mechanical design hydrodynamic-mechanical transmission shift schedule optimum design