摘要
为了达到节约燃油的目的，在良好的道路和交通条件下，驾驶员经常利用加速一滑行这种驾驶方法。本文研究利用模拟的方法，计算汽车加速—滑行循环工况的参数。这种工况的参数选取，是根据汽车总重量和道路条件确定，兼顾汽车的平均速度、燃料经济性和影响驾驶员工作强度的因素。因此，这是一个具有多参数的多目标优化问题。初步试验和研究表明，在额定载重条件下，加速过程中发动机的负荷率约为８５％，汽车的燃料经济性较好，且速度变化的间隔不应大于３０ｋｍ／ｈ。
Drivers often drive in an accelerating/coasting mode to save fuel in the case of good roadand light traffic,A simulating method is used to calculate the driving parameters of the accelerating/coasting cycle mode。In the choice of the parameters,considerations were given to the average velocity,fuel economy and drivers,operating intensity on the basis of the automotive gross weight and the roadconditions. Thus it comes out that this is an optimizing problem of multi-objectives with multi-parameters. The investigations and tests indicate that under the rated carrying capacity,better fueleconomy could be obtained when the load factor of the engine during acceleration is kept toapproximately 85%,and the velocity increment is controlled to no greater than 30km/h.
关键词
汽车
行驶工况
模拟模型
经济性
automobile
accelerating/coasting
simulation
optimization
