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1. 发明公开

EP1471229A1 Overhead cam engine with dry sump lubrication system 失效
标题翻译： Brennkraftmaschine mit obenliegender Nockenwelle und trockenerÖlwanne
公开(公告)号：EP1471229A1
公开(公告)日：2004-10-27
申请号：EP04017908.7
申请日：1996-07-05
申请人： TECUMSEH PRODUCTS COMPANY
发明人： Moorman, James W. , Christiansen, Erik J. , Molina, Roberto , Adams, Gar M.
IPC分类号： F02B63/02 , F02B75/16 , F02F1/06
CPC分类号： F02B63/02 , F01M1/04 , F01M9/10 , F01M2001/126 , F02B75/007
摘要： A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft (40) and crankshaft (42) are rotatably supported, and the housing includes an integrally formed cylinder (22) and head (24). A timing belt (105) disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston (46) connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall (48) around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir (135) connected to a pump (161) which supplies pressurized oil to the bearing journals of the camshaft. The reciprocating motion of the valve assemblies (67, 68) controlling intake and exhaust of the combustion chamber pumps the oil which lubricated the camshaft back to the external reservoir. The reciprocating motion of the piston similarly effects a high pressure within the crankcase cavity to pump oil which has lubricated the crankshaft back to the external reservoir.
摘要翻译：发动机（20）具有不具有在凸轮轴腔和曲轴腔（91）之间延伸的进一步的内部通路的发动机缸体。发动机缸体包括一体形成的气缸（22）和气缸盖（24）。互连的曲轴（42）设置在曲轴腔中，用于连接杆（92）和活塞（46）组件。顶置凸轮轴（40）和阀组件（67,68）设置在凸轮轴腔中。一对阀杆孔在凸轮轴腔和曲轴箱腔之间延伸穿过发动机缸体。阀组件包括设置在杆孔中的阀杆。

2. 发明公开

EP0752518A1 Overhead cam engine with dry sump lubrication system 失效
标题翻译： Brennkraftmaschine mit obenliegender Nockenwelle mit Trockensumpfschmierung
公开(公告)号：EP0752518A1
公开(公告)日：1997-01-08
申请号：EP96110885.9
申请日：1996-07-05
申请人： TECUMSEH PRODUCTS COMPANY
发明人： Moorman, James W. , Christiansen, Erik J. , Molina, Roberto , Adams, Gar M.
IPC分类号： F02B63/02 , F02B75/16
CPC分类号： F01M9/10 , F01M1/04 , F01M2001/126 , F01M2011/0083 , F02B63/02 , F02B75/007 , F02B75/16 , F02B2075/027 , F02B2275/20 , F02F1/002 , F02F2007/0063 , F02F2007/0092 , F05C2201/021
摘要： A single cylinder, internal combustion engine with a dry sump lubrication system. The engine includes an engine housing in which the overhead camshaft (40) and crankshaft (42) are rotatably supported, and the housing includes an integrally formed cylinder (22) and head (24). A timing belt (105) disposed externally of the engine housing interconnects the crankshaft and camshaft, and a piston (46) connected to the crankshaft reciprocates within an internal bore provided in the engine housing cylinder. The cylinder wall (48) around the internal bore is of a generally uniform thickness and circumscribed by cooling fins such that the cylinder resists bore distortion during operation. Dry sump lubrication is obtained by an external oil reservoir (135) connected to a pump (161) which supplies pressurized oil to the bearing journals of the camshaft. The reciprocating motion of the valve assemblies (67, 68) controlling intake and exhaust of the combustion chamber pumps the oil which lubricated the camshaft back to the external reservoir. The reciprocating motion of the piston similarly effects a high pressure within the crankcase cavity to pump oil which has lubricated the crankshaft back to the external reservoir.
摘要翻译：单缸，内燃机配有干式油底壳润滑系统。发动机包括发动机壳体，其中顶置凸轮轴（40）和曲轴（42）可旋转地支撑，并且壳体包括一体形成的气缸（22）和头部（24）。设置在发动机壳体外部的同步皮带（105）将曲轴和凸轮轴互连，并且连接到曲轴的活塞（46）在设置在发动机容纳气缸内的内孔内往复运动。内孔周围的气缸壁（48）具有大致均匀的厚度并被冷却翅片限定，使得气缸在操作期间抵抗孔变形。通过连接到泵（161）的外部储油器（135）获得干式油底壳润滑，该泵将压力油供应到凸轮轴的轴承轴颈。控制燃烧室的进气和排气的阀组件（67,68）的往复运动泵送润滑凸轮轴的油回到外部储存器。活塞的往复运动类似地在曲轴箱腔内产生高压，以泵送已经将曲轴润滑回到外部储存器的油。

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