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1. 发明授权

US6123061A Crankcase ventilation system 失效
标题翻译：曲轴箱通风系统
公开(公告)号：US6123061A
公开(公告)日：2000-09-26
申请号：US805935
申请日：1997-02-25
申请人： Glenn L. Baker , David M. Ruch , John M. Partridge , Brett Herrick
发明人： Glenn L. Baker , David M. Ruch , John M. Partridge , Brett Herrick
IPC分类号： F02B33/36 , F01M13/00 , F01M13/02 , F02B37/00 , F02M25/06
CPC分类号： F01M13/021 , F01M13/025 , F01M2013/0055 , F01M2013/0438
摘要： A closed crankcase ventilation system for a turbocharger internal combustion engine which uses differential pressure between the turbo compressor inlet and the crankcase to force blow-by gases through a separation device. The zone of low pressure of the turbo compressor inlet is located at the innermost diameter of the compressor inlet shroud. The difference between the pressure in the compressor inlet and the crankcase creates a vacuum which pulls gas from the crankcase into the ventilation system. The ventilation system includes a high restriction separator for removing oil from the blow-by gases. A control valve bypasses the separation device when insufficient pressure differential exists to drive the separator. Additionally, a system for ventilating crankcase gases from a crankcase of the engine includes a first flow passage communicating between the crankcase and a turbocharger of the engine, an high restriction separator positioned in the flow passage for separating air contaminant mixtures from crankcase gases, a first connection for connecting a first end of the flow passage to the crankcase, a second connection for connecting a second end of the flow passage to a predetermined point of the turbocharger, a second flow passage communicating between the first flow passage and an intake manifold of the engine, and a bypass flow passage for bypassing the separator. In this case, the crankcase gases are directed through the separator during heavy load, light load and idle operating conditions when sufficient vacuum exists to draw the crankcase gases through the coalescing filter and through the bypass flow passage when a sufficient vacuum is not present.
摘要翻译：一种用于涡轮增压器内燃机的闭合曲轴箱通风系统，其使用涡轮压缩机入口和曲轴箱之间的压差来迫使窜气通过分离装置。涡轮压缩机入口的低压区位于压缩机入口护罩的最内径。压缩机入口和曲轴箱之间的压力之差产生了将气体从曲轴箱吸入通风系统的真空。通风系统包括用于从窜气中除去油的高限制分离器。当存在不足的压差来驱动分离器时，控制阀旁路分离装置。此外，用于从发动机的曲轴箱通风曲轴箱气体的系统包括在曲轴箱和发动机的涡轮增压器之间连通的第一流动通道，位于流动通道中的用于将空气污染物混合物与曲轴箱气体分离的高限制分离器，第一用于将流路的第一端连接到曲轴箱的连接件，用于将流动通道的第二端连接到涡轮增压器的预定点的第二连接件，在第一流动通道和第一流动通道之间连通的第二流动通道发动机和用于绕过分离器的旁通流路。在这种情况下，当存在足够的真空时，当不存在足够的真空时，曲轴箱气体在重负载，轻负载和怠速运行条件下被引导通过聚结过滤器和通过旁路流动通道的曲轴箱气体。

2. 发明授权

US5669366A Closed crankcase ventilation system 失效
标题翻译：闭式曲轴箱通风系统
公开(公告)号：US5669366A
公开(公告)日：1997-09-23
申请号：US677821
申请日：1996-07-10
申请人： Donald W. Beach , Peter K. Herman , Alan Bounnakhom , David M. Ruch , John M. Partridge , J. E. Parlow
发明人： Donald W. Beach , Peter K. Herman , Alan Bounnakhom , David M. Ruch , John M. Partridge , J. E. Parlow
IPC分类号： F01M13/00 , F01M1/10 , F01M13/02 , F01M13/04 , F02M25/06
CPC分类号： F02M25/06 , F01M1/10 , F01M13/021 , F01M13/0011 , F01M13/028 , F01M2013/0055 , Y02T10/121
摘要： A closed crankcase ventilation system which relies on a vacuum assist from the turbocharger inlet to suction blow-by gases from the crankcase. The system includes a coalescer/filter which is operative to filter any oil particles which may be entrained in the blow-by gases before they are released into the turbocharger inlet. A pop off valve is also included in order to prevent the engine crankcase from becoming over pressurized as a result of back pressure caused by either a plugged coalescer/filter or some catastrophic engine malfunction. Further included is a vacuum limiting valve which prohibits the vacuum assist produced by the air inlet to the turbocharger from producing too low of an absolute pressure, thereby preventing an imbalance in pressure across the seals of the turbocharger. The system further includes a bypass valve which also prevents the crankcase from becoming over pressurized by routing the flow of blow-by gases around the coalescer/filter if the pressure in the crankcase becomes too great. Finally, the present invention incorporates a single mounting head which allows the various valves and filters of the present invention to be mounted thereon. The mounting head may then be conveniently attached to the engine at a single location.
摘要翻译：闭合的曲轴箱通风系统，其依赖于来自涡轮增压器入口的真空辅助以从曲轴箱吸入窜气。该系统包括聚结器/过滤器，其可操作以过滤在窜气被释放到涡轮增压器入口之前可夹带在窜气中的任何油颗粒。还包括一个截流阀，以防止发动机曲轴箱由于堵塞的聚结器/过滤器或一些灾难性的发动机故障引起的背压而变得过压。进一步包括一个真空限制阀，其禁止由涡轮增压器的进气口产生的真空辅助产生太低的绝对压力，从而防止涡轮增压器的密封件两端的压力不平衡。该系统还包括旁通阀，如果曲轴箱中的压力变得太大，也可以通过绕过聚结器/过滤器周围的窜气的流动来防止曲轴箱过度加压。最后，本发明包括一个单独的安装头，其允许本发明的各种阀和过滤器安装在其上。然后，安装头可以在单个位置方便地附接到发动机。

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