.11*(n/1000).^3-1.169*(n/1000).^4;Рm=1522;g=9.8;РG=m*g;Рig=[3.665 1.999 1.407 1.000 0.472];РnT=0.91;r=0.316;f=0.014;CDA=2.4;i0=4.778;РL=3.2;a=1.947;hg=0.9;If=0.218;Iw1=1.798;Iw2=3.598;Рua1=0.377*r*n/ig(1)/i0;Рua2=0.377*r*n/ig(2)/i0;Рua3=0.377*r*n/ig(3)/i0;Рua4=0.377*r*n/ig(4)/i0;Рua5=0.377*r*n/ig(5)/i0;РPe1=Tq.*ig(1)*i0.*ua1./(3600*r);РPe2=Tq.*ig(2)*i0.*ua2./(3600*r);РPe3=Tq.*ig(3)*i0.*ua3./(3600*r);РPe4=Tq.*ig(4)*i0.*ua4./(3600*r);РPe5=Tq.*ig(5)*i0.*ua5./(3600*r);Рua=[0:0.35:150];РFf=G*f;РFw=CDA*ua.^2/21.15;РPf=Ff*ua/3600;РPw=Fw.*ua/3600;РPe0=(Pf+Pw)./nT;РPe=max(Pe1);Рplot(ua1,Pe1,ua2,Pe2,ua3,Pe3,ua4,Pe4,ua5,Pe5,ua,Pe0,ua,Pe);Рaxis([0 150 0 150]);Рtitle('汽车功率平衡图');Рxlabel('ua(km/h)');Рylabel('Pe(kw)');Рgtext('1'),gtext('2'),gtext('3'),gtext('4'),gtext('5'),gtext('(Pf+Pw)/et'),gtext('Pe');
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