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公开(公告)号：US5054441A
公开(公告)日：1991-10-08
申请号：US353322
申请日：1989-05-15
CPC分类号： F02B77/04 , F02B25/14 , F02F1/22 , F02B2075/025
摘要： For the purpose of preventing a decompression passageway in a two-cycle engine from being blocked by carbon soot, facilitating manufacture of a two-cycle engine having decompression structure and eliminating reduction of output power of the two-cycle engine caused by the decompression structure, a known two-cycle engine includes a scavenging passageway formed along an inner wall of a cylinder. The scavenging passageway is directed in the axial direction of the cylinder and communicates with a crank case of the engine. A decompression groove extends in the axial direction of the cylinder on the upstream side of a cylinder cooling airflow at a top end portion of the scavenging passageway. The width and depth of the decompression groove are either varied along the axial direction of the groove so as to be narrowed towards a tip end thereof directed toward a plug, or are provided with a narrowed portion of venturi shape.
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2.发明授权公开(公告)号：US06244231B1
公开(公告)日：2001-06-12
申请号：US09666532
申请日：2000-09-20
IPC分类号： F01M910
CPC分类号： F02F1/30 , F01L1/12 , F01L1/182 , F02B2275/34 , F02F2001/245
摘要： In order to supply a sufficient quantity of lubricating oil to the entire valve operating mechanism, we designed a lubrication device for an overhead valve engine. A first breather passage goes from the valve operating mechanism chamber to the crankcase, passing through the cylinder head and cylinder. The first breather passage opens in the vicinity of the spring retainer for the intake valve on the surface of the cylinder head which faces the valve operating mechanism chamber for the valve operating mechanism. The opening of the first passage and the vicinity of the exhaust valve are connected by a second breather passage. This second passage comprises a groove formed by cutting in the valve operating mechanism chamber surface of the cylinder head, and a tunnel formed between an oil guide wall which goes up from the valve operating mechanism chamber surface of the cylinder head and the peripheral wall of the head. One end of this groove connects to the opening of the first breather passage.
摘要翻译： 为了向整个阀门操作机构提供足量的润滑油，我们设计了一种顶置阀门发动机的润滑装置。 第一通气通道从阀操作机构腔室到达曲轴箱，通过气缸盖和气缸。 第一通气通道在气缸盖的面对用于阀操作机构的阀操作机构室的表面上的进气阀的弹簧保持器附近打开。 第一通道和排气门附近的开口通过第二通气通道连接。 该第二通道包括通过在气缸盖的气门操作机构腔室表面中切割而形成的凹槽，以及形成在从气缸盖的气门操作机构腔室表面向上升起的导油壁和 头。 该槽的一端连接到第一通气通道的开口。
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3.发明授权公开(公告)号：US06178936B2
公开(公告)日：2001-01-30
申请号：US09104395
申请日：1998-06-25
IPC分类号： F01L100
CPC分类号： F02F1/30 , F01L1/12 , F01L1/182 , F02B2275/34 , F02F2001/245
摘要： To simplify the assembling process to mount a valve operating mechanism on a cylinder head, one intake valve and one exhaust valve are mounted on the cylinder head symmetrically with respect to the axis of a cylinder shaft. A rocker arm supporting base which supports rocker arms is fixed to the top of the cylinder head. Rocker arm shafts are supported by the base. The central portions of the rocker arms engage with the rocker arm shafts in such a way that the arms are free to swing. Push rods and the intake and exhaust valves are engaged with the ends of the arms. The valve operating mechanism is enclosed in a head cover which is fixed to the top surface of the cylinder head. This engine is distinguished by having the mounting surface for the rocker arm supporting base, on which the rocker shafts are mounted, and the surface on which the head cover sits be virtually coplanar. This makes it possible to machine the two surfaces at the same time. In order to supply a sufficient quantity of lubricating oil to the entire valve operating mechanism, a particularly designed lubrication device is provided.
摘要翻译： 为了简化在气缸盖上安装气门操作机构的组装过程，一个进气门和一个排气门相对于气缸轴的轴线对称安装在气缸盖上。 支撑摇臂的摇臂支撑底座固定在气缸盖顶部。 摇臂轴由底座支撑。 摇臂的中心部分与摇臂轴接合，使得臂自由摆动。 推杆和进排气阀与臂的端部接合。 阀门操作机构封闭在固定在气缸盖顶表面上的头罩内。 该发动机的特征在于具有用于摇臂支撑底座的安装表面，摇臂轴安装在其上，并且头盖所在的表面实际上是共面的。 这样可以同时加工两个表面。 为了向整个阀操作机构供应足够量的润滑油，提供了特别设计的润滑装置。
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公开(公告)号：US4130100A
公开(公告)日：1978-12-19
申请号：US744257
申请日：1976-11-23
申请人： Shigeichi Okada , Takeshi Katoh
发明人： Shigeichi Okada , Takeshi Katoh
CPC分类号： F02D37/00 , F02D33/02 , F02B2275/14 , F02D2041/389 , Y02T10/123
摘要： A direct-injection spark-ignition engine including a governor for sensing the rotational speed of the engine, fuel injection pumps for injecting fuel at a rate which may be increased or decreased by a fuel control rack connected to the power shaft of the governor, fuel injection nozzles for directly injecting the fuel from the pumps into the respective engine cylinders, ignition plugs for igniting and burning the fuel charges injected from the nozzles by spark discharge, and suction air passages through which air flows toward the combustion chambers, characterized by throttle valves each of which is mounted within each suction air passage to open or close the same, and throttle control mechanisms each of which is connected to the throttle valve and the fuel control rack to open or close the valve in such a way that the valve opening is increased in proportion to an increase in the quantity of fuel injection.
摘要翻译： 一种直喷式火花点火发动机，其包括用于检测发动机转速的调速器，用于以可连接到调速器的动力轴的燃料控制架可以增加或减少的速率喷射燃料的燃料喷射泵，燃料 用于将来自泵的燃料直接喷射到各个发动机气缸中的喷嘴，用于通过火花放电点燃和燃烧从喷嘴喷射的燃料的燃料的火花塞以及空气朝着燃烧室流动的吸入空气通道，其特征在于节流阀 其每一个安装在每个吸入空气通道内以打开或关闭它们，以及节流控制机构，每个节气门控制机构连接到节气门和燃料控制齿条以打开或关闭阀，使得阀开度为 与燃料喷射量的增加成比例地增加。
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