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1. 发明授权

US4728467A Inner air vent systems for float chambers in carburetors 失效
标题翻译：用于化油器浮子室的内部排气系统
公开(公告)号：US4728467A
公开(公告)日：1988-03-01
申请号：US17556
申请日：1987-02-24
申请人： Tomozo Nakagawa , Naotake Nii , Kozo Watanabe
发明人： Tomozo Nakagawa , Naotake Nii , Kozo Watanabe
IPC分类号： F02M5/02 , F02M5/08 , F02M35/04
CPC分类号： F02M5/08 , F02M35/04 , F02M5/02 , Y10S261/67 , Y10S55/28
摘要： An inner air vent system for internal combustion engines is disclosed which prevents accidental flush of fuel from the float chamber into the venturi tube of the carburetor as when the vehicle is running on a steep slope or extremely rough surface. The inner air vent system comprises an air passage axially defined in the mounting bosses of the air cleaner, air intake pipe and carburetor, with the air cleaner being located above the carburetor. The air passage has a lower end thereof opened into the air gap inside the float chamber. With this arrangement, tilt of the vehicle even into an extreme position is unlikely to permit the flow of fuel from the float chamber into the carburetor venturi tube, because of the air passage having its upper opening held high enough above the fuel level in the float chamber. Furthermore, the inner air vent system can be constructed without the addition of extra joints and piping work, there is no significant increase in assembling cost. In addition, the system is very simple in structure, it can be incorporated in a small, lightweight engine.
摘要翻译：公开了一种用于内燃机的内部空气排放系统，其防止当车辆在陡坡或非常粗糙的表面上行驶时，将燃料从浮子室意外冲洗到化油器的文氏管中。内部排气系统包括轴向限定在空气净化器，进气管和化油器的安装凸台中的空气通道，空气净化器位于化油器上方。空气通道的下端向浮子室内的空气间隙开口。通过这种布置，由于空气通道的上部开口保持足够高于浮子中的燃料水平，所以车辆的倾斜甚至不会使得燃料从浮子室流入化油器文丘里管房间。此外，内部通气系统可以在不增加额外的接头和管道工作的情况下构建，组装成本没有显着增加。此外，该系统的结构非常简单，可以并入小型轻型发动机。

2. 发明授权

US4688529A Lubricating system for horizontal cylinder overhead valve engine 失效
标题翻译：水平缸顶置阀发动机润滑系统
公开(公告)号：US4688529A
公开(公告)日：1987-08-25
申请号：US883718
申请日：1986-07-09
申请人： Takashi Mitadera , Tetsuaki Shirai , Tomozo Nakagawa , Naotake Nii , Kozo Watanabe
发明人： Takashi Mitadera , Tetsuaki Shirai , Tomozo Nakagawa , Naotake Nii , Kozo Watanabe
IPC分类号： F01M9/10 , F01M11/02 , F01M13/00 , F02B75/00 , F02F7/00 , F01M1/00
CPC分类号： F01M9/10 , F01M11/02 , F01M13/00 , F02B75/007 , F02B2275/34 , F02F7/006
摘要： A lubricating system for an internal combustion engine is disclosed. This system includes a pair of passages formed between a crank chamber for reserving oil and an air-oil separating chamber accommodating a mechanism for actuating overhead valves. The pair of passages are constituted by a breather passage formed in the upper portion of a cylinder and the oil-returning passage formed in the lower portion of the cylinder. The breather passage has a valve for allowing a fluid to pass solely toward the air-oil separating chamber and a large oil-circulating resistance is imparted to the fluid flowing toward the air-oil separating chamber through the oil-returning passage, thereby circulating an oil mist in one direction only by using the reciprocal motion of each piston. Even when the engine is inclined, oil is prevented from flowing back from the crank chamber to the separating chamber through the oil-returning passage.
摘要翻译：公开了一种用于内燃机的润滑系统。该系统包括在用于储存油的曲柄室和容纳用于致动顶置阀的机构的空气 - 油分离室之间形成的一对通道。一对通道由形成在气缸的上部的通气通路和形成在气缸的下部的回油通道构成。通气通道具有用于允许流体单独通向空气 - 油分离室的阀，并且通过回油通道向流向空气 - 油分离室的流体施加大的油循环阻力，从而使只有通过使用每个活塞的往复运动才能在一个方向上产生油雾。即使在发动机倾斜的情况下，通过回油通路，防止油从曲轴室向分离室回流。

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