• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Transmission and driveline, 2010 >Impacts of AMT Gear-Shifting on Fuel Optimal Look Ahead Control
【24h】

Impacts of AMT Gear-Shifting on Fuel Optimal Look Ahead Control

机译：AMT换档对燃油提前超前控制的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For a fuel optimal gear shift control, when look ahead information is available, the impact of the automated manual transmission (AMT) gear-shifting process is analyzed. For a standard discrete heavy truck transmission, answers are found on when to shift gears, prior to or when in an uphill slope. The gear-shifting process of a standard AMT is modeled in order to capture the fuel and time aspects of the gear shift. A numerical optimization is performed by dynamic programming, minimizing fuel consumption and time by controlling fuel injection and gear. Since a standard AMT does not have look ahead information, it sometimes gears down unnecessarily and thus gives a significantly higher fuel consumption compared to the optimal control. However, if gearing down is inevitable, the AMT gear-shifting strategy, based on engine thresholds, is well-functioning so that the optimal control only gives marginal additional savings. To attain the possible fuel reductions it is shown that the occasion of shifting gear must be chosen to ensure an adequate engine speed in order to get a sufficient engine power after the gear shift. The reduced propulsion of an AMT gear-shifting process, and the resulting vehicle retardation, must be considered.
机译：对于燃油最佳的变速控制，当可获得前瞻性信息时，将分析自动手动变速（AMT）变速过程的影响。对于标准的离散重型卡车变速箱，可以找到在上坡之前或何时上坡时何时换档的答案。对标准AMT的变速过程进行了建模，以捕获变速过程中的燃油和时间方面。通过动态编程执行数值优化，并通过控制燃油喷射和齿轮将燃油消耗和时间降至最低。由于标准AMT没有前瞻性信息，因此有时会不必要地减速，因此与最佳控制相比，油耗明显更高。但是，如果不可避免要进行减速，则基于发动机阈值的AMT换挡策略将发挥良好的作用，因此最佳控制仅能带来少量的额外节省。为了实现可能的燃料减少，表明必须选择换档的场合以确保足够的发动机转速，以便在换档后获得足够的发动机动力。必须考虑减少AMT换挡过程的推进力，以及由此导致的车辆减速。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号