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公开(公告)号：US5957118A
公开(公告)日：1999-09-28
申请号：US985111
申请日：1997-12-04
摘要： An oil separating apparatus of an engine mounted on a shaking machine such as a rammer, for separating oil mist from blow-by gas and for feeding liquefied oil back to a crank chamber comprises a rocker chamber having an enlarged volume and mounted on a cylinder head, a breather chamber mounted on the rocker chamber, a blow-by gas port provided on the locker chamber for communicating the rocker chamber with the breather chamber, and an oil passage having an enlarged passage area for communicating the crank chamber with the rocker chamber. The constituted oil separating apparatus separates oil mist from blow-by gas almost completely and returns liquefied oil to the crank chamber swiftly, even when the engine produces a large amount of oil mist due to violent vibrations of the shaking machine.
摘要翻译： 安装在诸如夯锤的振动机上的用于将油雾与窜气分开并将液化油回送到曲柄室的发动机的油分离装置包括具有增大体积的摇臂室，并安装在气缸盖 安装在所述摇臂室上的通气室，设置在所述储物室上的用于使所述摇臂室与所述通气室连通的窜气口，以及具有用于使所述曲柄室与所述摇臂室连通的扩大通路面积的油路。 构成的油分离装置几乎完全将油雾与窜气分开，即使当发动机由于振动机的剧烈振动而产生大量油雾时，液化油也迅速地返回到曲轴室。
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公开(公告)号：US5431013A
公开(公告)日：1995-07-11
申请号：US170751
申请日：1993-12-21
CPC分类号： F01N3/306 , F01N3/0335 , F01N3/34 , F01N1/24 , F01N2270/02 , Y02T10/20
摘要： An engine exhaust apparatus comprises a sound suppressing section for lowering the exhaust noise level as an exhaust gas discharged from the exhaust port passes through it. The exhaust apparatus is provided with an ejector section for introducing secondary air into the exhaust gas delivered from the sound suppressing section and mixing the gases, and a post-treatment section for purifying the gas mixture delivered from the ejector section. The exhaust gas discharged from an exhaust manifold gets into the ejector section through the sound suppressing section, and is then purified in the post-treatment section. Therefore, the ejector effect cannot be reduced by the sound suppressing section which is subject to high flow resistance. Thus, the exhaust noise level can be lowered with the ejector effect of the introduction of the secondary air improved considerably, and low cost and simple construction can be enjoyed.
摘要翻译： 发动机排气装置包括声音抑制部分，用于当从排气口排出的废气通过时，降低排气噪声水平。 排气装置设置有用于将二次空气引入到从声音抑制部输送的排气中并混合气体的喷射部，以及用于净化从喷射部输送的气体混合物的后处理部。 从排气歧管排出的废气通过声音抑制部进入喷射器部，然后在后处理部中进行净化。 因此，由于流动阻力高的声音抑制部不能降低喷射效果。 因此，能够显着提高二次空气的喷出效果，能够降低排气噪声水平，能够实现低成本，简单的结构。
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公开(公告)号：US5722295A
公开(公告)日：1998-03-03
申请号：US719872
申请日：1996-09-25
CPC分类号： F16H55/06 , Y10S74/10 , Y10T29/4948 , Y10T74/19907
摘要： An injection-molded gear for an utility engine has a high reliability, tenacity, and accuracy, capable of being manufactured at low cost without requiring cutting, and ensuring a substantial reduction in noise. An inner part of a cam crankshaft gear is formed of an insert ring of a sintered iron alloy. An outside portion and a toothed crest portion of the gear are formed by injection-molding a polyamide resin such as nylon 66 and heat-treating the resulting molded product so that its relative viscosity is equal to or larger than 3.5. The relative viscosity is defined as .eta./.eta..sub.0 where .eta..sub.0 is a viscosity of sulfuric acid of 98% concentration and .eta. is a viscosity of a solution of the 98% sulfuric acid in which the polyamide resin is dissolved at a concentration of 1.0%.
摘要翻译： 用于公用事业发动机的注射成型齿轮具有高可靠性，强度和精度，能够以低成本制造而不需要切割，并且确保噪音的显着降低。 凸轮曲轴齿轮的内部由烧结铁合金的插入环形成。 通过注射成型诸如尼龙66的聚酰胺树脂来形成齿轮的外部部分和带齿的齿顶部分，并对所得的模制产品进行热处理，使其相对粘度等于或大于3.5。 相对粘度定义为eta / eta 0，其中η0为硫酸的粘度为98％浓度，η为聚酰胺树脂溶解浓度为1.0％的98％硫酸溶液的粘度， 。
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