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    • 2. 发明申请
    • INTERNAL COMBUSTION ENGINE AND CAM DRIVE MECHANISM THEREFOR
    • 内燃机及其驱动机构
    • WO1982003658A1
    • 1982-10-28
    • PCT/US1982000442
    • 1982-04-09
    • FORD MOTOR CO CANADA LTDFORD WERKE AGFORD FRANCE SAFORD MOTOR COMA THOMAS TSIO HEI
    • FORD MOTOR CO CANADA LTDFORD WERKE AGFORD FRANCE SAFORD MOTOR CO
    • F01L01/34
    • F01L1/348F01L1/024F01L1/352F01L1/356F02B2075/027
    • An internal combustion engine has n number of cylinders, a piston in each cylinder connected to a crankshaft (2), each piston being in phase or out of phase with the others by A or a multiple thereof (A = 720/n), cams for actuating inlet and exhaust valves to each cylinder, and a cam drive mechanism (5) which rotates the cams in phased relationship with the crankshaft (2) to open the valves in sequence for a desired angle of rotation of the crankshaft. The cam drive mechanism also includes means for combining the rotational movement of the cams with a phased oscillatory movement of the camshaft (3) and cams of variable amplitude about the axis of rotation at a frequency f times the crankshaft frequency so that over the period which the valves are opened and/or their timings variable, f has the following values: f = 2n when the number of cylinders n = 1; f = n or n/2 when n = 2; and f = n/2 when n = 3 or more. The selection of the frequency of the oscillations allows all the cams to be mounted on the same camshaft.
    • 内燃机具有n个气缸,每个气缸中的活塞连接到曲轴(2),每个活塞与其它活塞同相或异相(A = 720 / n ),用于向每个气缸致动入口和排气阀的凸轮;以及凸轮驱动机构(5),其使与所述曲轴(2)定相关系的所述凸轮旋转,以依次打开所述阀,以使所述曲轴的期望的旋转角度。 凸轮驱动机构还包括用于将凸轮的旋转运动与凸轮轴(3)的相位振荡运动和围绕旋转轴线的可变振幅的凸轮以相对于曲轴频率f的频率组合的装置,使得在 阀被打开和/或其定时可变,f具有以下值:当缸数n = 1时,f = 2n; 当n = 2时,f = n或n / 2; 当n = 3以上时,f = n / 2。 振荡频率的选择允许所有的凸轮安装在相同的凸轮轴上。