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CAO Ya-bin, LIANG Hai-shun. Shift schedule of automatic mechanical transmission[J]. Journal of Traffic and Transportation Engineering, 2009, 9(3): 56-59. doi: 10.19818/j.cnki.1671-1637.2009.03.011
Citation: CAO Ya-bin, LIANG Hai-shun. Shift schedule of automatic mechanical transmission[J]. Journal of Traffic and Transportation Engineering, 2009, 9(3): 56-59. doi: 10.19818/j.cnki.1671-1637.2009.03.011
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Shift schedule of automatic mechanical transmission

doi: 10.19818/j.cnki.1671-1637.2009.03.011

  • School of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an 710048, Shaanxi, China

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  • Author Bio:

    CAO Ya-bin(1976-), female, lecturer, PhD, +86-29-82330162, yabcao@163.com

  • Received Date: 2009-01-11
  • Publish Date: 2009-06-25
    Abstract
  • In order to solve some problems existed in AMT vehicle, such as big shift impact and low shift success rate between gears which have large transmission ratio difference, shift schedule and shift quality were synthetically considered, and a new establishing method of down shift schedule was put forward.Down shift schedule was obtained based on the optimal power or fuel-economy up shift schedule when the impact value was controlled under 17.64 m·s-3 and down shift delay is in 2~8 km·h-1.An optimal power down shift schedule was developed for special off-road vehicle with the method, and the performance of AMT vehicle was compared with that of MT vehicle controlled by skilled driver.Analysis result indicates that the average acceleration of the former increases by 18.7%, the average velocity increases by 22.2%, so the power performance of the vehicle was improved obviously.

     

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    • References(11)
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