汽车运用工程实验报告

绘制4挡变速器的相关

25 30 35 40

的相关动力性曲线

F

+

n(r/min)Fψ1Fψ2Fψ3Fψ4600485.3300487.3952493.6955511.16921000486.6029492.3396509.8404558.37851500489.0890501.9965541.3734650.58402000492.5696515.5163585.5195779.67182500497.0446532.8988642.2789945.64183000502.5141554.1441711.65141148.49413500

508.9780579.2522793.63711388.22854000516.4364608.2230888.23601664.8452

n(r/min)i1i2i3i46000.22790.10690.05290.024910000.32890.15370.07790.038515000.38780.17940.09100.044120000.40160.18510.09310.042525000.39710.18270.09050.037430000.38700.17790.08640.030735000.36880.16930.08000.02184000

0.32520.1493

0.0670

0.0084n(r/min)1/a11/a21/a3

1/a4n(r/min)6000.6766 1.1016 2.0655 4.284960010000.48120.7704 1.4033 2.7747100015000.4158

0.6627 1.2027

2.4220150020000.40340.6432 1.1770 2.5140200025000.40740.6513 1.2099 2.8521250030000.41650.6685 1.2675

3.4798300035000.43450.7011 1.3683

4.8914350040000.48610.7930 1.6302

12.7147

4000

各档爬坡度计算值（i）行驶阻力（F ψ=Ff+Fw）

加速度倒数值（1/a）

[m

dt ?δ1/a1 1/a2 1/a3

0.0000

0.5000 1.5000 2.0000 2.5000 3.0000

0.000 20.000 40.000 60.000 80.000 100.000 a1 a2 a3 a4 Ua （km/h ） 汽车加速度曲线图

温科3320150394409

a

n(r/min)u a

0.377rn/(igi01/a4每个区间的时间(s)梯形法计算

加速时间t(s)

60014.24 4.28490.000001000

23.73 2.77479.30789.3078150035.60 2.42208.564417.8722200047.46 2.51408.134826.0071250059.33 2.85218.843734.8508300071.20 3.479810.435545.2864350083.06 4.891413.796459.08284000

94.93

12.7147

29.016288.0990

n(r/min)D1D2D3D4f 6000.23520.11930.06580.03790.01310000.32540.16490.09070.05150.01315000.37450.18960.10370.05710.01320000.38570.19500.10570.05550.01325000.38200.19270.10310.05040.01330000.37390.18810.09900.04370.01335000.35900.18000.09270.03480.01340000.32220.16060.07990.0214

0.013

c 1000300035004000169.7305163.0495146.47153.3184859.7563561.34910995

动力因素及滚动阻力系数

直接挡加速时间(ig=1)

20 40 60 80 100 120 140 160 180 200 0

1000

2000

3000

4000

发动机转速n(r/min)

发动机外特性

90.000 100.000

1/a3 1/a4

21601000

e tq n P Fv T T πω===

a1

a2a3a41.4779

0.90780.48410.23342.0782

1.29800.71260.3604

2.4048

1.50890.83150.4129

2.4792

1.55460.84960.3978

2.4548

1.53530.82650.3506

2.4008

1.49590.7890

0.28742.3016

1.42630.73090.2044

2.0571 1.26110.61340.0786

加速度值（a）

)](w f F F +-f α

αtan )(arcsin w f t =+-=i G

F F F

5000 扭矩Ttq

功率Pe

G

F

F

D w

t

-

=

D—动力因数

216010009550tq tq T n n T kw π=

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