本科生毕业设计（论文）
[25]HATTORI N,et al.A new five-speed Nissan automatic transmission For passenger cars[J].SAE 1990 Transactions,1990,99:717-723 (SAE930669).
[26]JJ.Creenbaum. Light truck powertrain optimization techniques and
procedures.SAE.TransEction secion,3.1987,96
[27]S. Timoshendo. STRENGTH OF MATERIALS. Part I, 3rd ed.，D. Van Nostrand
co.，Inc.，Princeton, N .J .1955. 442
[28]James N.Siddall.OPTIMAL ENGINEERING DESIGN, Principles and
Applications, Faculty of Engineering McMaster University，Hamilton, Ontario, Canada. MARCEL DEKKER, INC. New York and Basel. 1982 [29]D. A. Newton, A. Acholes. Computer aided optimal of diesel engine
pistons ASME paper,1970-DGP-6.
[30]H. D.Shroff and D.Hodgetls. Simulation and Optimization of
thermodynamicsof Diesel Engines, SAE Transaction 740194 [31]Fox,R. L. Optimization Methods for Engineering Design, 1984
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本科生毕业设计（论文）
附 录
附录A 程序清单
发动机转矩
n=800:42:5000
Te=-0.000006.*(n-2500).^2+150 plot(n,Te) xlabel('n/(rpm)') ylabel('Te/(N.m)')
title('发动机转数特性曲线') grid on axis square 泵轮力矩系数 Id1=0:0.01:0.5
Dp1=-0.8.*(Id1-0.5).^2+2.5 Id2=0.5:0.01:1
Dp2=-7.*(Id2-0.5).^2+2.5 Dp3(:,1:50)=Dp1(:,1:50) Dp3(:,51:101)=Dp2(:,1:51) Id3(:,1:50)=Id1(:,1:50) Id3(:,51:101)=Id2(:,1:51) plot(Id3,Dp3)
title('泵轮力矩系数曲线') grid on axis square 变矩系数 Ud1=0:0.01:0.85
Cp1=-Ud1.*(2.4-1)./0.85+2.4 Ud2=0.85:0.01:1 Cp2=1
Cp3(:,1:85)=Cp1(:,1:85)
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Cp3(:,86:101)=Cp2(:,:,1) Ud3(:,1:85)=Ud1(:,1:85) Ud3(:,86:101)=Ud2(:,:,1) plot(Ud3,Cp3) title('变矩系数曲线') grid on axis square 液力变矩器特性 N11=[2671:90.5:4481]
Cp001=2.4000; Cp006=2.3176; Cp011=2.2353; Cp021=2.0706; Cp026=1.9882; Cp031=1.9059; Cp041=1.7412; Cp046=1.6588; Cp051=1.5765; Cp061=1.4118; Cp066=1.3294; Cp071=1.2471; Cp081=1.0824; Cp086=1.0000; Cp091=1.0000; Cp101=1.0000;
Tt001=((-0.000006).*(N11-2500).^2+150).*Cp001; Tt006=((-0.000006).*(N11-2500).^2+150).*Cp006; Tt011=((-0.000006).*(N11-2500).^2+150).*Cp011; Tt016=((-0.000006).*(N11-2500).^2+150).*Cp016; Tt021=((-0.000006).*(N11-2500).^2+150).*Cp021; Tt026=((-0.000006).*(N11-2500).^2+150).*Cp026; Tt031=((-0.000006).*(N11-2500).^2+150).*Cp031; Tt036=((-0.000006).*(N11-2500).^2+150).*Cp036; Tt041=((-0.000006).*(N11-2500).^2+150).*Cp041; Tt046=((-0.000006).*(N11-2500).^2+150).*Cp046; Tt051=((-0.000006).*(N11-2500).^2+150).*Cp051; Tt056=((-0.000006).*(N11-2500).^2+150).*Cp056; Tt061=((-0.000006).*(N11-2500).^2+150).*Cp061; Tt066=((-0.000006).*(N11-2500).^2+150).*Cp066; Tt071=((-0.000006).*(N11-2500).^2+150).*Cp071; Tt076=((-0.000006).*(N11-2500).^2+150).*Cp076; Tt081=((-0.000006).*(N11-2500).^2+150).*Cp081; Tt086=((-0.000006).*(N11-2500).^2+150).*Cp086; Tt091=((-0.000006).*(N11-2500).^2+150).*Cp091;
34
本科生毕业设计（论文）
Cp016=2.1529; Cp036=1.8235; Cp056=1.4941; Cp076=1.1647; Cp096=1.0000;
本科生毕业设计（论文）
Tt096=((-0.000006).*(N11-2500).^2+150).*Cp096; Tt101=((-0.000006).*(N11-2500).^2+150).*Cp101; plot(N11,Tt001,N11,Tt006) hold on
plot(N11,Tt011,N11,Tt016) hold on
plot(N11,Tt021,N11,Tt026) hold on
plot(N11,Tt031,N11,Tt036) hold on
plot(N11,Tt041,N11,Tt046) hold on
plot(N11,Tt051,N11,Tt056) hold on
plot(N11,Tt061,N11,Tt066) hold on
plot(N11,Tt071,N11,Tt076) hold on
plot(N11,Tt081,N11,Tt086) hold on
plot(N11,Tt091,N11,Tt096,N11,Tt101) xlabel('n/(rpm)') ylabel('Tt/(N.m)') gtext('2.4000') gtext('2.3176') gtext('2.2353') gtext('2.1529') gtext('2.0706') gtext('1.9882') gtext('1.9059') gtext('1.8235') gtext('1.7412') gtext('1.6588') gtext('1.5765')
35
本科生毕业设计（论文）
gtext('1.4914') gtext('1.4118') gtext('1.3294') gtext('1.2471') gtext('1.1647') gtext('1.0824') gtext('1.0000')
title('液力变矩器特性曲线') grid on axis square
发动机和液力变矩器工作点 n=800:210:5000
Te=-0.000006.*(n-2500).^2+150
Dp001=2.3000; Dp006=2.3380; Dp011=2.3720; Dp021=2.4280; Dp026=2.4500; Dp031=2.4680; Dp041=2.4920; Dp046=2.4980; Dp051=2.5000; Dp061=2.4300; Dp066=2.3425; Dp071=2.2200; Dp081=1.8700; Dp086=1.6425; Dp091=1.3800; Dp101=0.7500;
Tp001=0.0086.*(0.25^5).*Dp001.*(n.^2) Tp006=0.0086.*(0.25^5).*Dp006.*(n.^2) Tp011=0.0086.*(0.25^5).*Dp011.*(n.^2) Tp016=0.0086.*(0.25^5).*Dp016.*(n.^2) Tp021=0.0086.*(0.25^5).*Dp021.*(n.^2) Tp026=0.0086.*(0.25^5).*Dp026.*(n.^2) Tp031=0.0086.*(0.25^5).*Dp031.*(n.^2) Tp036=0.0086.*(0.25^5).*Dp036.*(n.^2) Tp041=0.0086.*(0.25^5).*Dp041.*(n.^2) Tp046=0.0086.*(0.25^5).*Dp046.*(n.^2) Tp051=0.0086.*(0.25^5).*Dp051.*(n.^2) Tp056=0.0086.*(0.25^5).*Dp056.*(n.^2) Tp061=0.0086.*(0.25^5).*Dp061.*(n.^2) Tp066=0.0086.*(0.25^5).*Dp066.*(n.^2) Tp071=0.0086.*(0.25^5).*Dp071.*(n.^2)
36
Dp016=2.4020; Dp036=2.4820; Dp056=2.4825; Dp076=2.0625; Dp096=1.0825;