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公开(公告)号：US5456239A
公开(公告)日：1995-10-10
申请号：US281223
申请日：1994-07-27
CPC分类号： F01M13/021 , F01M13/023
摘要： A crankcase ventilation system for a vehicle includes an arrangement of flow conduits and control valves which cooperate with a two-chamber accumulator and with various vehicle components to route crankcase gases to the intake manifold. The primary vehicle components include a compressor, an aftercooler positioned downstream from the compressor, and an engine having an intake manifold and a crankcase. One chamber of the accumulator is coupled by one conduit to the inlet side of the compressor and by a second conduit to the outlet side of the compressor. These two conduits are controlled by a dual valve arrangement. The other chamber of the accumulator is connected by one conduit to the crankcase and by a separate conduit to the intake manifold. Each conduit includes a control valve. The system operates on pressure differences existing between these various components. The cycle begins by opening the conduit which is connected to the inlet side of the compressor. This creates a low pressure on that side of the diaphragm. Due to their higher pressure, the crankcase gases empty into the accumulator and when a predetermined pressure is reached, the various valves change state, allowing the high pressure side of the compressor to empty into the accumulator. This pushes the lower pressure crankcase gases out of the accumulator through a different conduit to the intake manifold. These crankcase gases are then burned in the cylinders and the crankcase gases are not vented directly to the atmosphere.
摘要翻译： 用于车辆的曲轴箱通风系统包括与两室蓄能器和各种车辆部件配合以将曲轴箱气体路由到进气歧管的流动管道和控制阀的布置。 主要车辆部件包括压缩机，位于压缩机下游的后冷却器和具有进气歧管和曲轴箱的发动机。 蓄能器的一个腔室通过一个导管连接到压缩机的入口侧，并通过第二导管连接到压缩机的出口侧。 这两个管道由双阀装置控制。 蓄能器的另一个室通过一个导管连接到曲轴箱，并通过与进气歧管的单独管道连接。 每个导管包括一个控制阀。 该系统对这些各种组件之间存在的压力差进行操作。 循环通过打开连接到压缩机的入口侧的管道开始。 这在隔膜的那一侧产生低压。 由于其压力较高，曲轴箱气体进入蓄能器，当达到预定压力时，各种阀门改变状态，允许压缩机的高压侧排入蓄能器。 这通过与进气歧管不同的导管将较低压力的曲轴箱气体从蓄能器推出。 然后，这些曲轴箱气体在气缸中燃烧，并且曲轴箱气体不直接排放到大气中。
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