车辆传动综合实验报告

1、 研究生专业实验教学实验报告书实验课程名称：车辆动力传动综合实验实验指导教师：学院：专业及类别：学号：姓名：实验日期：2014年10月日成绩：一、实验目的1.了解发动机的工作原理及发动机实验的操作方法和流程；2.掌握发动机试验的数据处理方法。二、实验内容对发动机试验数据进行处理，绘制发动机在稳态工况下的各种特性曲线图，包括：1.绘制JL474Q发动机的外特性曲线；2绘制JL474Q发动机输出转矩稳态图；3绘制JL474Q发动机等油门下，发动机转速与功率、转矩输出稳态图；4绘制JL474Q发动机负荷特性图；5.建立JL474Q发动机燃油消耗模型；6绘制JL474Q发动机万有特性图；7.在JL47

2、4Q发动机万有特性图上绘制JL474Q发动机最佳经济燃油消耗线、最佳动力工作线。二、实验原理1发动机的外特性曲线发动机外特性曲线是在发动机最好的工作状态下能使发动机发出最大功率的情况下（油门开度100%时）测出来的发动机速度特性曲线。2发动机输出转矩稳态图发动机输出转矩稳态图是指在稳态工况下，发动机转矩随转速和油门开度的变化情况。3发动机速度特性曲线发动机速度特性曲线是指发动机的油门开度保持不变的情况下，转矩、功率、油耗等性能指标随发动机转速的变化规律。4发动机负荷特性曲线发动机的转速不变时，其性能指标随负荷的变化关系，在测定负荷特性时必须保持转速不变。（即：当发动机转速不变，而逐渐改变节气门

3、开度，每小时耗油量B、燃料消耗率b随负荷（Pe、Ttq或Pme）而变化的关系。5发动机燃油消耗模型发动机燃油消耗模型是指在稳态工况下，发动机燃油消耗率随转速和转矩的变化情况。6发动机万有特性图发动机万有特性图是指在稳态工况下，发动机燃油消耗率在转速和转矩坐标平面上的等高图。7发动机最佳工作线发动机最佳工作线包括发动机最佳动力性工作线和最佳经济性工作线。1）发动机最佳经济燃油消耗线：由发动机的负荷特性曲线可以得到发动机的等油耗曲线。发动机最佳经济性工作点即为等油耗曲线与等功率曲线的切点。用求解发动机最佳动力性工作点的方法可以求得发动机最佳经济性工作点，从而得到发动机最佳经济性工作线。2）发动机最

4、佳动力性工作线：发动机最佳动力性工作点为发动机的等功率曲线与发动机扭矩曲线的切点，也就是扭矩曲线上功率最大的点。依次求出一系列油门开度下发动机最佳动力性工作点，将这些最佳工作点用曲线连接起来即得到发动机最佳动力性工作线。三、实验记录“长安之星”车用发动机特性实验记录实验用发动机型号：JL474Q（1.3L）实验日期：2000年6月7日1.发动机怠速实验怠速检查：（每30秒记录一次，速度单位：转/分钟）实验速度：777770765757760754750755745最低转速：745最高转速：7772.发动机功率实验转速(rpm)6002574754995250500647504500425639

5、9737473500扭矩(Nm)87.890.192.594.593.592.891.892.891.790.493.0油耗(Kg/h)20.0518.6718.6517.0316.9915.6213.4313.4011.7410.7411.11转速(rpm)3253300227482504224719941754150412531016910扭矩(Nm)92.890.789.889.685.284.882.875.671.568.065.2油耗(Kg/h)10.529.858.678.006.655.945.364.443.602.762.463.发动机万有特性实验1、油门开度3%（800r

6、pm时实验数据仅供参考）转速(rpm)15131266993902856800扭矩(Nm)7.213.222.625.226.426油耗(Kg/h)0.930.921.080.920.920.852、油门开度5%转速(rpm)2465226219981753150912401003906844扭矩(Nm)2.45.411.315.322.131.238.239.639.4油耗(Kg/h)1.381.401.461.441.351.331.291.271.243、油门开度10%转速(rpm)45074258400337483515324329902750250822512003扭矩(Nm)2.7

7、3.85.18.311.614.818.021.026.831.138.5油耗(Kg/h)2.852.732.662.732.802.702.732.642.742.832.64转速(rpm)1753151012471004910853扭矩(Nm)44.248.753.151.949.547.4油耗(Kg/h)2.572.342.241.991.791.694、油门开度15%转速(rpm)599157535500525050104757450242604002375134783243扭矩(Nm)3.86.210.413.514.518.721.823.526.129.934.837.5油耗(K

8、g/h)5.715.355.805.345.014.654.434.484.444.374.414.32转速(rpm)30062745249622561995175315121250985904856扭矩(Nm)40.845.149.651.154.156.659.457.553.653.552.8油耗(Kg/h)4.124.093.83.633.453.242.112.542.121.941.835、油门开度20%转速(rpm)59995753550150064742449842434005374435023255扭矩(Nm)22.525.429.336.038.339.641.446.24

9、8.552.155.2油耗(Kg/h)8.467.948.337.477.356.256.086.205.925.695.50转速(rpm)301427562510225720011762151012551007917852扭矩(Nm)57.158.260.263.264.064.664.660.866.063.360.3油耗(Kg/h)5.335.914.664.374.023.693.342.752.322.191.996、油门开度25%转速(rpm)599557585515524549964751450342504002375334973250扭矩(Nm)41.144.348.551.4

10、54.558.062.659.962.964.667.569.4油耗(Kg/h)10.6510.4310.779.949.419.849.257.657.687.317.046.55转速(rpm)301127582511225320041747150912571001901861扭矩(Nm)70.369.068.672.374.971.769.565.570.567.265.0油耗(Kg/h)6.345.835.364.874.584.033.382.892.772.572.407、油门开度30%转速(rpm)599957415516524650034746449942544000375035

11、053251扭矩(Nm)58.161.965.168.471.872.673.875.575.776.976.777.7油耗(Kg/h)13.2712.9513.2312.1012.5111.5910.7110.819.78.947.667.20转速(rpm)300127542508225420061753150012511000901857扭矩(Nm)76.775.979.676.776.874.873.571.569.266.164.0油耗(Kg/h)6.586.385.925.104.644.093.573.632.882.452.268、油门开度35%转速(rpm)6001574854

12、99524349954743450342504003375235063254扭矩(Nm)68.871.774.678.380.079.780.581.781.483.585.480.8油耗(Kg/h)15.2514.9915.5914.0213.0313.5012.3511.0110.4610.569.747.55转速(rpm)300027612501225320061760149712601000903851扭矩(Nm)79.077.879.677.280.281.377.772.068.566.666.4油耗(Kg/h)7.086.736.055.294.865.084.173.432.6

13、92.532.469、油门开度40%转速(rpm)59965745549652434999474345024242400537543502扭矩(Nm)76.078.780.783.685.284.385.085.885.586.387.7油耗(Kg/h)16.8516.0716.8515.4914.5014.6113.2111.5711.2010.939.90转速(rpm)3253300627522500225720041748150312551007908扭矩(Nm)87.886.785.586.483.285.682.276.771.467.967.7油耗(Kg/h)9.089.228.3

14、47.236.475.245.084.193.412.682.7110、油门开度45%转速(rpm)59915748550352454997474545034247400637563494扭矩(Nm)79.282.385.087.388.488.387.788.788.588.390.0油耗(Kg/h)17.6418.4116.6315.6916.1814.6012.9112.7111.5310.289.37转速(rpm)324629892745249722482008174015091245988894扭矩(Nm)90.588.687.888.585.086.083.177.772.067.

15、968.5油耗(Kg/h)9.758.678.657.466.376.085.154.303.372.611.5911、油门开度50%转速(rpm)60085756550252485005475645084255399937583499扭矩(Nm)82.484.587.288.891.089.689.189.889.889.990.8油耗(Kg/h)18.4419.1817.5816.3416.9115.2313.1313.0111.9010.5510.04转速(rpm)3254300527532510224519971493175512511008906扭矩(Nm)91.589.287.58

16、8.985.285.181.777.672.669.165.9油耗(Kg/h)10.0410.078.128.0166.695.574.824.483.652.902.5312、油门开度55%转速(rpm)59985750550552345012475045044255400137543504扭矩(Nm)83.486.488.190.591.690.590.490.690.891.091.7油耗(Kg/h)19.6218.2318.6616.6515.8215.9713.4612.1112.2010.869.91转速(rpm)3248299327502505225120011752149312

17、491009910扭矩(Nm)92.589.888.190.085.886.181.877.673.470.366.7油耗(Kg/h)10.099.178.177.496.935.794.814.253.752.992.5713、油门开度60%转速(rpm)60085754549452435002474845104239400937463496扭矩(Nm)84.187.889.691.592.791.390.591.490.591.192.1油耗(Kg/h)20.2818.4018.1617.4115.8615.6914.2612.2911.4211.3910.29转速(rpm)3246300

18、42745250619961743150312551012927扭矩(Nm)91.390.788.989.487.583.076.972.068.866.1油耗(Kg/h)9.459.538.447.396.025.234.393.482.732.5014油门开度65%转速(rpm)60055750.5550552595005474545004250400537533504扭矩(Nm)85.888.891.192.494.292.591.892.490.792.092.9油耗(Kg/h)19.8619.2317.5718.0316.3615.0614.4712.4611.3511.4410.3

19、8转速(rpm)324430052758250622452000174815061250995904扭矩(Nm)92.291.289.190.186.885.781.377.872.368.565.3油耗(Kg/h)9.449.588.477.397.005.786.084.553.682.822.4515、油门开度70%转速(rpm)59965745550252444997474645064250400837553509扭矩(Nm)87.289.591.693.894.593.291.792.491.691.593.3油耗(Kg/h)19.2319.0618.4916.6517.0915.5

20、613.4613.2711.9510.6910.92转速(rpm)3252299827522500224620071756150812521000910扭矩(Nm)93.790.690.990.586.386.082.377.772.669.065.3油耗(Kg/h)9.969.028.957.906.635.595.184.503.362.772.4916、油门开度75%转速(rpm)59915749550052505994474745044247400537563503扭矩(Nm)86.991.092.393.395.293.392.293.091.392.493.5油耗(Kg/h)20.

21、1318.5219.1818.0016.0215.2914.6512.5611.4211.6010.35转速(rpm)3254300427542500226320021756151312441002906扭矩(Nm)92.691.489.889.887.686.882.776.070.671.467.8油耗(Kg/h)8.809.698.507.417.085.975.004.163.493.032.6117、油门开度80%转速(rpm)59915750550952474999475445004251399837463500扭矩(Nm)87.589.391.693.295.493.992.39

22、2.190.491.893.2油耗(Kg/h)19.4619.4318.5616.8117.2515.5314.5712.8211.3611.6410.67转速(rpm)325029972752249522581992174515151258996905扭矩(Nm)92.792.690.890.786.887.682.376.073.570.366.9油耗(Kg/h)9.589.608.737.396.896.125.044.223.842.922.6418、油门开度85%转速(rpm)60115752550352505004475444984247400337453501扭矩(Nm)87.7

23、89.791.992.794.692.692.492.490.890.893.2油耗(Kg/h)19.2520.1118.1317.5416.9815.1414.5713.1712.1010.8710.96转速(rpm)3251300027472503225020061747150612571003892扭矩(Nm)92.790.591.290.886.585.382.575.871.868.264.6油耗(Kg/h)9.968.938.947.875.575.545.284.473.582.762.3719、油门开度90%转速(rpm)6017574655125259499847414500

24、4252400737563501扭矩(Nm)86.590.191.992.994.492.891.692.090.791.893.2油耗(Kg/h)20.6519.6717.8718.2016.3815.2114.6012.5411.6510.7210.76转速(rpm)3247299027472501224720051753149812471017910扭矩(Nm)93.991.890.491.286.685.581.176.172.869.666.7油耗(Kg/h)10.179.978.278.046.855.774.844.513.782.942.6020、油门开度95%转速(rpm)6

25、0065755549452554999476245024246400837533544扭矩(Nm)86.289.192.293.294.693.690.691.589.690.992.0油耗(Kg/h)20.0720.2017.7817.5616.9215.1614.5912.6911.4411.5810.47转速(rpm)3245300727562502225019991747150612471003902扭矩(Nm)91.691.189.288.185.985.180.874.170.070.366.7油耗(Kg/h)9.469.648.407.347.096.065.064.163.502.982.6021、油门开度100%转速(rpm)60025747549952505006475045004256399737473500扭矩(Nm)87.890.192.594.593.592.891.892.891.790.493.0油耗(Kg/h)20.0518.6718.6517.0316.9915.6213.4313.4011.7410.7411.11转速(rpm)3253300227482504224719941754150412531016910扭矩(Nm)92.890.789.88