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    • 58. 发明授权
    • Valve operating mechanism for internal combustion engine
    • 内燃机阀门操作机构
    • US4793297A
    • 1988-12-27
    • US71653
    • 1987-07-09
    • Noriaki FujiiTakeshi IwataNaoki Takahara
    • Noriaki FujiiTakeshi IwataNaoki Takahara
    • F01L1/04F01L1/053F01L1/12F01L1/18F01L1/26F02B1/04F02B67/00F02F1/24F02F1/42F01L1/44
    • F01L1/26F01L1/053F01L2001/0535F02B1/04F02B2275/20F02F1/4214F02F2001/245
    • An internal combustion engine, which includes a cylinder bore having an axis, a cylinder head disposed above the cylinder bore and having a combustion chamber, intake and exhaust valves movably supported in the cylinder head, and a spark plug supported in the cylinder head and having electrodes disposed centrally in the combustion chamber. A valve operating mechanism combined with an internal combustion engine comprising, a single camshaft rotatably disposed above the cylinder head, a single rocker arm shaft rotatably disposed above the cylinder head, an intake-valve rocker arm swingably supported on the rocker shaft and operatively engaging the intake valve, an exhaust-valve rocker arm swingably supported on the rocker shaft and operatively engaging the exhaust valve, a cam holder disposed above the cylinder bore, the camshaft being rotatably supported by the cam holder, a rocker holder disposed above the cylinder bore, the rocker arm shaft being rotatably supported by the rocker holder, and a plug insertion tube having a plug insertion hole for insertion of the spark plug therethrough, the plug insertion tube being integrally formed with the cam holder and the rocker holder.
    • 一种内燃机,其包括具有轴的气缸孔,设置在气缸孔上方并具有燃烧室的气缸盖,可移动地支撑在气缸盖中的进气和排气阀,以及支撑在气缸盖中的火花塞, 设置在燃烧室中心的电极。 一种与内燃机组合的阀操作机构,包括:可旋转地设置在气缸盖上方的单个凸轮轴,可旋转地设置在气缸盖上方的单个摇臂轴,可摆动地支撑在摇臂上的进气阀摇臂, 进气阀,可摆动地支撑在摇杆轴上并可操作地接合排气阀的排气阀摇臂,设置在气缸孔上方的凸轮保持器,凸轮轴由凸轮保持器可旋转地支撑,设置在气缸孔上方的摇臂保持器, 所述摇臂轴由所述摇臂支架可转动地支撑,所述插头插入管具有用于插入所述火花塞的插头插入孔,所述插头插入管与所述凸轮保持架和所述摇架保持器一体形成。
    • 60. 发明授权
    • Timing chain retractor and lock
    • 定时链卷收器和锁
    • US4684357A
    • 1987-08-04
    • US798002
    • 1985-11-14
    • Buddy D. Hooper
    • Buddy D. Hooper
    • F01L1/02F01L1/46F16H7/08
    • F01L1/022F01L1/02F01L1/024F01L1/46F01L2001/0535F01L2103/01F02B2275/08F02B2275/20F02F2007/0063
    • This specification discloses apparatus for locking and retracting the timing chain(s) or belt of overhead cam internal combustion engines. The apparatus consists of essentially two components; an adjustable Retractor and a spring loaded Lock. During maintenance and/or overhaul of the engine and following removal of the Rocker Arm Cover(s), the Lock is compressed and installed between the two sides of the timing chain and seated on top of the crank sprocket. Upon release, the spring of the Lock forces the two sides of the lock to expand and lock the timing chain into position around the crank timing chain sprocket and prevents the engine mounted timing chain tensioner piston from jumping out of detent and falling into the engine oil pan. Utilization of the Lock in the foregoing manner allows for the removal of the engine head which contains the overhead cam and upper timing sprocket without necessitating the removal of the engine front cover, fan, and oil pan. Following removal of the engine head the Retractor is installed at the front of the engine block using two of the engine head bolts to secure the Retractor in position on the two front head bolt holes of the engine block. The cam sprocket is then installed on the Retractor and the Retractor adjusted to tension the timing chain. Upon tensioning of the timing chain, the Lock may be removed, chain tension now being sufficient to maintain the engine mounted timing chain tensioner piston in position and the timing chain secure around the crank sprocket.
    • 本说明书公开了用于锁定和缩回顶置凸轮内燃机的正时链或带的装置。 该装置基本上由两部分组成: 一个可调节的收缩器和弹簧加载的锁。 在发动机的维护和/或大修以及拆卸摇臂盖之后,锁被压缩并安装在正时链的两侧之间并且位于曲柄链轮的顶部。 释放后,锁的弹簧迫使锁的两侧将正时链伸展并锁定在曲轴正链链轮周围的位置,并防止发动机安装的正时链张紧器活塞跳出制动并落入发动机油 泛。 以上述方式使用锁定装置可以拆卸包含顶置凸轮和上定时链轮的发动机头,而不需要拆卸发动机前盖,风扇和油底壳。 在拆下发动机头后,使用两个发动机头螺栓将牵引器安装在发动机缸体的前部,以将牵引器固定在发动机缸体的两个前头螺栓孔上。 然后将凸轮链轮安装在收缩器上,并且收缩器被调整以张紧正时链条。 在正时链条张紧的情况下,可以拆下锁定件,现在链条张力足以将发动机安装的正时链条张紧器活塞保持在适当位置,正时链条固定在曲柄链轮周围。