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公开(公告)号：US5159911A
公开(公告)日：1992-11-03
申请号：US718981
申请日：1991-06-21
CPC分类号： F02M57/021 , F02M55/00 , F02M59/38
摘要： A fuel leakage prevention system for preventing undesired leakage of fuel into the combustion chambers of an internal combustion engine equipped with a pressure/time, cam actuated unit fuel injection system. The system includes a main housing containing an evacuatable chamber adapted to be connected by a first fluid conduit to a source of sub-atmospheric pressure by a check valve and manual shut off valve. The evacuatable chamber is also adapted to be fluidically connected to a common rail supplying fuel to the injectors by a solenoid controlled valve which is open during engine shutdown and closed during engine operation whereby fuel is withdrawn from the injectors by the vacuum upon engine shutdown.
摘要翻译： 一种用于防止燃料进入配有压力/时间，凸轮致动单元燃料喷射系统的内燃机的燃烧室的不期望的泄漏的燃料泄漏防止系统。 该系统包括一个包含可排气室的主壳体，其适于通过止回阀和手动截止阀由第一流体导管连接到亚大气压源。 可抽空室还适于流体连接到共轨，通过螺线管控制的阀向喷射器供应燃料，该电磁阀在发动机关闭期间打开并且在发动机操作期间关闭，由此在发动机关闭时通过真空从喷射器中抽出燃料。
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公开(公告)号：US5092299A
公开(公告)日：1992-03-03
申请号：US620199
申请日：1990-11-30
摘要： An air fuel control system for an internal combustion engine is disclosed. The control system includes an air pressure responsive device for modulating mechanically the flow of fuel into the engine in response to the pressure of air within the intake manifold. The pressure-responsive device includes first and second chambers, separated by a diaphragm being attached to a piston, with the first chamber which is connected to the intake manifold by an air line. The air fuel control system further includes a fuel metering device for controlling the flow of fuel into the air-fuel control in response to intake manifold air pressure including a barrel and plunger assembly with the barrel inlet port being specifically configured to accommodate both the no-air and transition-curve fuel rail pressures. The barrel profile is designed to meter fuel quickly and precisely in response to changes in manifold air pressure. Displacement of the plunger initially uncovers a small inlet port in the barrel which provides for viscosity insensitivity for aiding in cold starts and cold accelerations. Continued displacement of the plunger uncovers the lead of a transition region which provides for ease in the calibration of the air fuel control. A further region of transition region is next uncovered which permits acceleration with reduced acceleration smoke, noise and emissions while optimizing transient engine response. With an increase in air pressure from the manifold, a fourth region is uncovered which represents a driver feel of the acceleration without emission penalties and finally, once the plunger has reached the larger input port, a sharp inflection is realized wherein full fuel flow is permitted.
摘要翻译： 公开了一种用于内燃机的空气燃料控制系统。 控制系统包括气压响应装置，用于响应于进气歧管内的空气压力机械地调节进入发动机的燃料流。 压力响应装置包括第一和第二腔室，隔膜通过连接到活塞的隔膜分隔开，第一腔室通过空气管线连接到进气歧管。 空气燃料控制系统还包括燃料计量装置，用于响应于包括筒和柱塞组件的进气歧管空气压力来控制进入空燃燃料控制器的燃料流，其中筒体入口端口被特别地配置成容纳两端的空气 - 空气和过渡曲线燃油轨压力。 桶形轮廓被设计成响应于歧管空气压力的变化而快速且精确地计量燃料。 柱塞的位移最初露出桶中的小入口端口，其提供用于帮助冷启动和冷加速度的粘度不敏感性。 柱塞的持续位移露出过渡区域的引线，该过渡区域便于校准空气燃料控制。 过渡区域的另一个区域接下来被覆盖，其允许加速，减少加速度烟雾，噪声和排放，同时优化瞬态发动机响应。 随着来自歧管的空气压力的增加，第四区域是未被覆盖的，其代表加速度的驾驶员感觉而没有排放惩罚，并且最后，一旦柱塞已经到达较大的输入端口，就实现了一个急剧的拐点，其中允许全燃料流动 。
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公开(公告)号：US4928647A
公开(公告)日：1990-05-29
申请号：US430064
申请日：1989-11-01
IPC分类号： F02D11/04
CPC分类号： F02D11/04 , Y10T74/20534 , Y10T74/2063
摘要： A throttle lever assembly for an internal combustion engine including a reliable substantially failure-proof dual acting--double breakover throttle lever is provided to maintain control over engine throttling in the event of certain types of failure of the vehicle throttle control or related structures. The throttle lever assembly is operatively positioned between an operator-actuated throttle control and the engine fuel supply system. A throttle link lever mounted for pivotal movement relative to the throttle lever is actuated by the throttle control to cause the throttle lever to rotate a throttle shaft between preset full throttle and idle positions. The throttle lever and the link lever include integrally formed tabs which hold a coiled torsion spring positioned to resist breakover, thereby normally maintaining the assembly in an axially aligned operating position. Double breakover stops formed integrally on the link lever are provided to limit the breakover travel of the link lever to predetermined limits by positively contacting the throttle shaft in the event that the breakover mechanism is activated.
摘要翻译： 提供一种用于内燃机的油门杆组件，其包括可靠的基本上故障的双作用双重断油节流杆，以在车辆节气门控制或相关结构的某些类型的故障的情况下维持对发动机节流的控制。 节流杆组件可操作地定位在操作者致动的节气门控制和发动机燃料供应系统之间。 安装用于相对于节流杆枢转运动的油门连杆杆由节气门控制致动，以使油门杆在预设的全油门和空转位置之间旋转节流轴。 节流杆和连杆具有一体形成的凸片，该凸片保持一个定位成抵抗断裂的螺旋扭力弹簧，从而通常将组件保持在轴向对准的操作位置。 提供一体地形成在连杆上的双重断流止动件，以在断路机构被启动的情况下，通过积极地接触节流轴来将连杆的分断行程限制在预定的极限。
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公开(公告)号：US20100322778A1
公开(公告)日：2010-12-23
申请号：US12456702
申请日：2009-06-19
CPC分类号： F04D29/284 , B22D25/02 , B22F3/17 , B22F5/009 , B22F2999/00 , C21D10/00 , C22F1/04 , F04D29/023 , F05D2230/90 , F05D2300/608 , B22F2207/20 , B22F2207/11
摘要： In one form, a turbocharger component, such as a compressor wheel or an impeller, formed of a cast material or a material made using a powder metal process, includes a surface having at least a portion thereof treated by a thermo-mechanical treatment process, such as friction stir processing. At the treated portion, the material forming the component includes a microstructure that is different than the microstructure of the material throughout the rest of the component. For example, in one form the material at the treated portion includes a homogenous microstructure while the material throughout the rest of the component includes a cast microstructure. In one or more forms, the treated portion exhibits at least one of increased strength, ductility and fatigue-resistant properties. In another form, a method is directed to providing components for a turbocharger which exhibit enhanced structural properties. However, other embodiments, forms and applications are also envisioned.
摘要翻译： 在一种形式中，由铸造材料或使用粉末金属工艺制成的材料形成的涡轮增压器部件，例如压缩机叶轮或叶轮，包括具有通过热机械处理工艺处理的至少一部分的表面， 如摩擦搅拌加工。 在处理部分，形成部件的材料包括与组件的其余部分中材料的微结构不同的微结构。 例如，在一种形式中，处理部分处的材料包括均匀的微结构，而整个组件的其余部分的材料包括铸造微结构。 在一种或多种形式中，经处理的部分显示出增加的强度，延展性和抗疲劳性能中的至少一种。 在另一种形式中，一种方法旨在提供一种表现出增强结构特性的涡轮增压器的部件。 然而，也可以设想其他实施例，形式和应用。
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公开(公告)号：US5009435A
公开(公告)日：1991-04-23
申请号：US393881
申请日：1989-08-15
IPC分类号： F16J15/32
CPC分类号： F16J15/3232
摘要： A unitary seal device having a dual seal system for sealing around a rotatable shaft between the rotatable shaft and its housing to separate a region of higher pressure from a region of lower pressure is disclosed. The unitary seal device includes an annular outer housing which forms the outer periphery of the unitary seal device. The outer housing has a through bore located substantially axially centrally thereon which divides the annular outer housing into an axially inner portion and an axially outer portion. First and second seal elements having an L-shaped cross-section, including a radially extending leg and an axially extending leg are disposed in the outer housing. The axially extending legs are spaced-apart from each other to form a central channel and the radially extending legs sealingly engaging the rotatable shaft around the entire circumference of the rotatable shaft. A securing device including a first annular inner retainer located in the axial outer portion of the outer housing holds in position the radially extending legs of the first and second seal elements. A second annular inner retainer disposed in the axially inner portion of the outer housing may also be used. The outer housing through bore permits venting through said unitary seal device in the event of a sealing failure but is formed to preclude the ingress of contaminants.
摘要翻译： 公开了具有双重密封系统的单一密封装置，用于围绕可旋转轴与其壳体之间的可旋转轴密封，以将较高压力的区域与低压区域分开。 整体密封装置包括形成整体密封装置的外周的环形外壳。 外部壳体具有基本上轴向位于其上的通孔，其将环形外部壳体分成轴向内部部分和轴向外部部分。 第一和第二密封元件具有L形横截面，包括径向延伸的腿和轴向延伸的腿部设置在外壳体中。 轴向延伸的腿彼此间隔开以形成中心通道，并且径向延伸的腿围绕可旋转轴的整个圆周密封地接合旋转轴。 位于外壳的轴向外部的包括第一环形内保持器的固定装置将第一和第二密封元件的径向延伸的支脚保持在适当位置。 还可以使用设置在外壳的轴向内部的第二环形内保持器。 外壳通孔可以在密封故障的情况下通过所述单一密封装置进行排气，但形成为排除污染物的进入。
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