公开(公告)号：US5890475A

公开(公告)日：1999-04-06

申请号：US119762

申请日：1998-07-21

申请人： Alfred C. Dallman

发明人： Alfred C. Dallman

IPC分类号： F02M25/06 ,  F02M7/00

CPC分类号： F02M25/06 ,  Y02T10/121

摘要： A crankcase ventilation system withdraws vapors from the crankcase of an internal combustion engine by using intake manifold vacuum to transfer crankcase vapors from a position in the engine crankcase, away from any lubricant pool, into the air/fuel intake manifold system, thereby moving the crankcase vapors along with a controlled amount of bleed (ambient) air to the intake manifold of the engine. The engine crankcase is kept under negative pressure by careful sizing of the parts, and the intake tube for bleed air is the only air admission to the crankcase so as to maintain this negative pressure condition within the engine crankcase. The bleed air intake tube is located adjacent the outlet tube for combining crankcase vapors and bleed air, without particulate or contaminates from the crankcase, and directed to the engine fuel/air intake manifold through a thermal cooling chamber. Any existing ventilation air inlet port is blocked (in retrofit to existing systems) and is not provided in OEM systems according to the invention. Recirculation of blow-by gases, and bleed air is aided by the fact that the crankcase vapors are in transit from a hot crankcase region to a much cooler vapor region.

摘要翻译： 曲轴箱通风系统通过使用进气歧管真空将曲轴箱蒸汽从发动机曲轴箱中的位置（远离任何润滑剂池）传送到空气/燃料进气歧管系统中从而从内燃机的曲轴箱中抽出蒸汽，从而使曲轴箱 蒸汽以及受控量的排放（环境）空气到发动机的进气歧管。 发动机曲轴箱由于部件的小型化而保持在负压状态，而排气的进气管是进入曲轴箱的唯一空气，以保持发动机曲轴箱内的这种负压状态。 排放空气进气管位于出口管附近，用于将曲轴箱蒸汽和排放气体组合在一起，没有来自曲轴箱的颗粒物或污染物，并通过热冷却室引导到发动机燃料/进气歧管。 任何现有的通风空气入口被堵塞（对现有系统进行改造），并且在根据本发明的OEM系统中不提供。 由于曲轴箱蒸气从热曲轴箱区域转移到更冷的蒸气区域，所以有助于再循环窜气​​和排气。

公开(公告)号：US4279236A

公开(公告)日：1981-07-21

申请号：US83904

申请日：1979-10-11

申请人： Alfred C. Dallman

发明人： Alfred C. Dallman

IPC分类号： F01M13/02 ,  F02B75/22 ,  F02M23/09 ,  F02M25/06

CPC分类号： F01M13/02 ,  F02M23/09 ,  F02B75/22 ,  Y02T10/146

摘要： In a first air flow circuit filtered ram air cooperating with an aspirator draws crankcase vapors from the crankcase of an internal combustion engine. Heavy particulate matter in the crankcase vapor is heated and further vaporized by a heat exchanger cooperating with an exhaust manifold of the engine. A second aspirator draws the vaporized particulate matter back into the original vapor steam of the first air flow circuit. The crankcase vapors mixed with the incoming ram air are then directed into the interior cavity of the carburetor air filter. In a second air flow circuit filtered ram air is directed into the crankcase and carburetor air filter cavity and in a third air flow circuit filtered air is drawn through a variable annular orifice and metered in accord with intake manifold pressure and directed into the engine air intake system below the carburetor throttle plate.

摘要翻译： 在与吸气器配合的过滤的冲压空气中的第一气流回路中，从内燃机的曲轴箱抽出曲轴箱蒸汽。 通过与发动机的排气歧管配合的热交换器将曲轴箱蒸气中的重颗粒物质加热并进一步蒸发。 第二吸气器将蒸发的颗粒物质吸回第一气流回路的蒸汽蒸汽中。 然后将与输入的冲压空气混合的曲轴箱蒸汽导入化油器空气过滤器的内部空腔。 在第二空气流动回路中，过滤的冲压空气被引导到曲轴箱和化油器空气过滤器空腔中，并且在第三空气流路中，过滤的空气被抽吸通过可变环形孔，并根据进气歧管压力计量并引导到发动机进气口 化油器节流板下方的系统。

公开(公告)号：US4779601A

公开(公告)日：1988-10-25

申请号：US46602

申请日：1987-05-07

申请人： Alfred C. Dallman

发明人： Alfred C. Dallman

IPC分类号： F01M13/02 ,  F02B1/04 ,  F02B75/22 ,  F02M25/06

CPC分类号： F01M13/022 ,  F02B1/04 ,  F02B75/22

摘要： A system for withdrawing vapors from the crankcase of an internal combustion engine and directing the vapors into the air intake manifold thereof for combustion within the engine is described which comprises a first vapor flow circuit interconnecting the crankcase in vapor flow communication with the air intake manifold at a region thereof where a vacuum is generated or maintained, the first circuit including in a described embodiment, an orifice and expansion chamber for expanding and cooling the vapors to an aerosol state; a second vapor flow circuit of generally lower flow impedance than that of the first circuit may be included on certain engine-fuel/air system types for interconnecting the crankcase in vapor flow communication with the air cleaner of the fuel/air system for conducting vapor to the carburetor at high throttle operating conditions.

摘要翻译： 描述了一种用于从内燃机的曲轴箱抽出蒸汽并将蒸气引导到其进气歧管内以在发动机内进行燃烧的系统，其包括将曲轴箱与进气歧管蒸汽流连通的第一蒸气流回路， 其中产生或保持真空的区域，所述第一电路在所述实施例中包括用于将蒸气膨胀和冷却至气溶胶状态的孔和膨胀室; 在某些发动机 - 燃料/空气系统类型中可以包括通常具有比第一回路更低的流阻抗的第二蒸汽流回路，用于将曲轴箱与燃料/空气系统的空气净化器进行蒸气流连通以将蒸气传导至 化油器在高油门操作条件下。

公开(公告)号：US4404950A

公开(公告)日：1983-09-20

申请号：US347382

申请日：1982-02-09

申请人： Alfred C. Dallman

发明人： Alfred C. Dallman

IPC分类号： F01M13/00 ,  F01M13/02 ,  F02B75/22 ,  F02M25/06

CPC分类号： F01M13/02 ,  F01M13/0033 ,  F01M13/022 ,  F01M13/028 ,  F02B75/22

摘要： An improved system for ventilating and utilizing crankcase vapors in an internal combustion engine uses an air pump for feeding air to both the first and second air flow circuits of the system such that air and crankcase vapors will be withdrawn from the engine crankcase to the first circuit and directed to the engine intake system, while air will be added to the crankcase from the second circuit. The air pump is connected to and driven by the engine such that feeding of air to the first and second circuits is regulated in direct proportion to the rpm of the engine.

摘要翻译： 用于在内燃机中通风和利用曲轴箱蒸汽的改进系统使用空气泵将空气供给到系统的第一和第二空气流动回路，使得空气和曲轴箱蒸气将从发动机曲轴箱排出到第一回路 并且引导到发动机进气系统，同时空气将从第二回路添加到曲轴箱。 空气泵连接到发动机并由发动机驱动，使得空气向第一和第二回路的供给与发动机的转速成正比地调节。