汽车动力性!已知某载货汽车满载重量38000N,车轮半径0.367m,传动系数机械效率0.85,滚动阻力系数0.013,

hj91572022-10-04 11:39:541条回答

汽车动力性!
已知某载货汽车满载重量38000N,车轮半径0.367m,传动系数机械效率0.85,滚动阻力系数0.013,空气阻力系数0.75,迎风面积3.8m²,传动系总传动比igio=18.0.现汽车以30km/h的速度匀速上坡,坡度i=0.01,试计算此时发动机曲轴输出转矩是多少?

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阿雅达共回答了13个问题 | 采纳率76.9%: 设坡角度为A tanA=0.01 算出A来.
匀速上坡发动机牵引力=GcosAf+GsinA+风阻（自己查公式,电脑不好写）
算出发动机牵引力后除以车轮滚动半径得到车轮扭矩.
把车轮扭矩除以传动比再除以机械效率0.85即为发动机输出转矩.; 1年前

英语翻译汽车动力性是指在良好、平直的路面上行驶时,汽车由所受到的纵向外力决定的、所能达到的平均行驶速度.汽车是一种高效率 英语翻译 汽车动力性是指在良好、平直的路面上行驶时,汽车由所受到的纵向外力决定的、所能达到的平均行驶速度.汽车是一种高效率的运输工具,运输效率之高低在很大程度上取决于汽车的动力性.所以,动力性是汽车各种性能中最基本、最重要的性能.动力性代表了汽车行驶可发挥的极限能力. 本文研究了汽车动力性评价的各种方法和评价指标,介绍了动力性评价的主要参数：最高车速、加速时间、最大爬坡度、发动机最大功率、比功率、驱动轮输出功率、驱动力等相关评价参数 wwoo524361年前1: 相间不如偶遇共回答了14个问题 | 采纳率85.7%

The automobile power is refers to when good,the straight road surface goes,the average moving velocity which the automobile by receives the longitudinal external force which decides,to be able to achieve.The automobile is one kind of high efficiency transport means that height of the transportation efficiency is decided to a great extent by automobile's power.Therefore,the power is in automobile each performance is most basic,the most important performance.The power has represented the ultimate capacity which the automobile travel may display.this article has studied automobile power appraisal each method and the evaluating indicator,introduced the kinetic appraisal main parameter:Maximum speed,rise time,most greatly crawling slope,engine maximum work rate,power density,driving gear output,driving influence and so on related appraisal paramete

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汽车动力性!已知某载货汽车满载重量38000N,车轮半径0.367m,传动系数机械效率0.85,滚动阻力系数0.013,

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