Курсовая работа: Расчет привода и поршневого двигателя автомобиля
n = (3.14*3400/30)*45 (Sin30 + (l/2)* Sin2*30)=11936.97
n = (3.14*3400/30)*45 (Sin60 + (l/2)* Sin2*60)=19120.22
n = (3.14*3400/30)*45 (Sin90 + (l/2)* Sin2*90)=19625
n = (3.14*3400/30)*45 (Sin120 + (l/2)* Sin2*120)=14871.28
n = (3.14*3400/30)*45 (Sin150 + (l/2)* Sin2*150)=7688.03
n = (3.14*3400/30)*45 (Sin180 + (l/2)* Sin2*180)=0
n = (3.14*3400/30)*45 (Sin210 + (l/2)* Sin2*210)= -7688.03
n = (3.14*3400/30)*45 (Sin240 + (l/2)* Sin2*240)= -14871.28
n = (3.14*3400/30)*45 (Sin270 + (l/2)* Sin2*270)= -19625
n = (3.14*3400/30)*45 (Sin300 + (l/2)* Sin2*300)= -19120.22
n = (3.14*3400/30)*45 (Sin330 + (l/2)* Sin2*330)= -11936.97
n = (3.14*3400/30)*45 (Sin360 + (l/2)* Sin2*360)=0
Расчеты внесем в табл. 2 и построим график зависимости
n = f (a) … (рис. 6)
6.3 Ускорение поршня изменяется во времени t , т.е.
а = dn / dt = (dn / da) * (da / dt) = (dn / da) * w.
dn / da = w * R * d/ da (Sina + ( l/2)* Sin2α) =
= w * R * (Cosa + l * Cos2α).
а = w * (dn / da) = w2 * R * (Cosa + l * Cos2α).
а = (3.14*3400/30)2 * 45 * (Cos0 + l * Cos2*0)=6419010.4
а = (3.14*3400/30)2 * 45* (Cos30 + l * Cos2*30)=5089121.91
а = (3.14*3400/30)2 * 45* (Cos60 + l * Cos2*60)=1925703.125
а = (3.14*3400/30)2 * 45* (Cos90 + l * Cos2*90)= -1283802.1
а = (3.14*3400/30)2 * 45* (Cos120 + l * Cos2*120)= -3209505.2
а = (3.14*3400/30)2 * 45* (Cos150 + l * Cos2*150)= -3805319.82
а = (3.14*3400/30)2 * 45* (Cos180 + l * Cos2*180)= -3851406.25
а = (3.14*3400/30)2 * 45 * (Cos210 + l * Cos2*210)= -3805319.82
а = (3.14*3400/30)2 * 45* (Cos240 + l * Cos2*240)= -3209505.2
а = (3.14*3400/30)2 * 45 * (Cos270 + l * Cos2*270)= -1283802.1