主权项 |
一种老年三轮摩托车发动机排气凸轮,其特征在于:所述排气凸轮中心0与凸轮型线起点D的连线在第一直线L4上,排气凸轮中心0与凸轮型线终点E的连线在第二直线L5上,排气凸轮中心0与排气凸轮凸缘最外沿点C的连线在第三直线L3上,所述第一直线L4与第三直线L3之间的夹角为c,且86°≤c≤92°,所述第二直线L5与第三直线L3之间的夹角为d,且92°≤d≤98°;所述排气凸轮的角度与凸轮升程的对应关系形成升程表,该升程表为: 角度(°)升程(mm)角度(°)升程(mm)角度(°)升程(mm)00641.88521261.309520.0026662.15231281.139540.0128682.45081300.986060.0230702.78411320.846980.0332723.15411340.7214100.0434743.56011360.6091120.0536763.99051380.5098140.0638784.41501400.4234160.0740804.79561420.3498180.0842825.10041440.2887200.0944845.32211460.2400220.1046865.46211480.2032240.1148885.52381500.1779260.1250895.52631520.1617280.1352905.51071540.1505300.1454925.42931560.1403320.1558945.29491580.1301340.1689965.12351600.1199360.1892984.92301620.1097380.22011004.69871640.0995400.26281024.45461660.0893420.31771044.19411680.0791440.38501063.92021700.0689460.46511083.63651720.0587480.55841103.34611740.0485500.66511123.05221760.0383520.78571142.75821780.0281540.92111162.46931800.0179561.07281182.19391820.0077581.24261201.93921840601.43301221.7076 621.64641241.4983 。 |