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公开(公告)号：US06799458B2
公开(公告)日：2004-10-05
申请号：US09849201
申请日：2001-05-04
IPC分类号： G01F2300
CPC分类号： G01F23/265 , G01F23/268 , G01N33/2888
摘要： An oil level/condition sensor includes a first level sensing tube, a common tube, and a second level sensing tube. The tubes are concentric to each other around a central axis. Moreover, the tubes are separated by plastic spacers which insulate the level sensing tubes from the common tube and maintain the concentricity of the tubes. Installed in the end of the first level sensing tube is a coupling/plug and disposed around the coupling/plug is a first condition sensing tube. The coupling/plug insulates the first level sensing tube from the first condition sensing tube and prevents fluid communication therebetween. A second condition sensing tube is attached to the second level sensing tube around the common tube and the first condition sensing tube. A ring-shaped insulator electrically isolates the second condition sensing tube from the second level sensing tube. The multiple tube configuration provides increased sensing surface area without increasing the length of the sensor or dramatically increasing the overall diameter of the sensor package. As such, the increased sensing surface area increases the signal strength and the accuracy of the sensor. Thus, the sensor is used in relatively shallow oil pans where the length of the sensor is constrained by the depth of the oil pan.
摘要翻译： 油位/状态传感器包括第一级感测管，公共管和第二级感测管。 这些管围绕中心轴线彼此同心。 此外，管由塑料间隔隔开，塑料间隔件将液位传感管与普通管隔开并保持管的同心度。 安装在第一级感测管的末端是耦合/插头并且设置在耦合/插头周围的是第一状态感测管。 联接/插塞使第一级感测管与第一状态感测管绝缘，并防止其间的流体连通。 第二条件感测管附接到围绕公共管和第一条件感测管的第二级感测管。 环形绝缘体将第二状态感测管与第二电平感测管电隔离。 多管构造提供增加的感测表面积，而不增加传感器的长度或显着增加传感器封装的总直径。 因此，增加的感测表面积增加了信号强度和传感器的精度。 因此，传感器用于相对较浅的油底壳中，传感器的长度受到油盘深度的限制。
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公开(公告)号：US06750763B2
公开(公告)日：2004-06-15
申请号：US10066832
申请日：2002-02-04
IPC分类号： B60Q100
CPC分类号： G01N33/2888
摘要： A system for measuring oil condition in large engines includes a bypass valve that is installed in a lubrication system along a fluid line between an oil pan and an engine. The bypass valve communicates with a measurement chamber and when energized by a control module, the bypass valve diverts oil from the lubrication system to the measurement chamber. An oil condition sensor is disposed within the measurement chamber and is used to determine the condition of the oil that is diverted to the chamber. After the condition of the oil is determined, the bypass valve is energized to release the oil from the measurement chamber back into the lubrication system.
摘要翻译： 用于测量大型发动机中的油状况的系统包括旁通阀，其安装在沿着油盘和发动机之间的流体管线的润滑系统中。 旁路阀与测量室连通，当由控制模块通电时，旁通阀将油从润滑系统转移到测量室。 油位传感器设置在测量室内，用于确定转向腔室的油的状态。 在确定油的状态之后，旁通阀被通电以将油从测量室释放回润滑系统。
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公开(公告)号：US06557396B2
公开(公告)日：2003-05-06
申请号：US09849577
申请日：2001-05-04
IPC分类号： G01N3326
CPC分类号： G01N33/2888
摘要： A flexible circuit film oil sensor includes a flexible circuit film surrounded by a flexible border. A core support flap and a weld flap are attached to opposite ends of the flexible border. The flexible circuit film includes an oil level sensing electrode surface, an oil condition sensing electrode surface, a resistive temperature device, and a common electrode surface. The flexible circuit film engine oil sensor is wrapped around a core structure so that a spiral oil chamber is formed. Accordingly, the spiral oil chamber is at least partially filled with oil and electrical signals are provided across the electrode surfaces in order to monitor the level and condition of oil within the sensor. Additionally, the resistive temperature device provides a signal representative of the temperature of the oil within the sensor.
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