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公开(公告)号：US11340131B2
公开(公告)日：2022-05-24
申请号：US16640344
申请日：2018-10-19
发明人： Haocheng Zhou , Mark Sheplak
摘要： Systems, methods, and apparatuses for taking pressure measurements are provided. A multi-hole pressure sensor probe can include a probe tip having a plurality of probe tip holes. The probe tip holes can lead to probe tip channels that convey fluid from the measurement environment to pressure transducers. The pressure transducers can operate using optical transduction techniques. A light source can be applied to the diaphragm, and the light reflected from the diaphragm changes as the position of the diaphragm changes. Further, a reflective material can be applied on the backside of the diaphragm to increase its reflective properties. The light can then be collected and analyzed using a photodiode to determine the environmental pressure acting on the different holes of the probe.
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公开(公告)号：US06976395B2
公开(公告)日：2005-12-20
申请号：US10487046
申请日：2002-08-02
CPC分类号： G01L23/16 , G01L1/044 , G01L9/0077 , G01L11/02
摘要： The invention relates to optical devices for measuring pressure or force, comprising an electromagnetic radiation source, and a pressure membrane or a spiral spring which has a surface that at least partially reflects the electromagnetic rays of the electromagnetic radiation source. The inventive devices are especially characterized in that they allow, inter alia, measurement of even the slightest pressure changes of fluids and other flowable materials in the stationary and/or flowing state or even the slightest mechanical deformations on spiral springs. In order to do this, the rays of an electromagnetic radiation source are incident on the at least partially reflective surface of the pressure membrane or spiral spring. At least one section of a stationarily located body or of a stationarily located body having a reflective layer is disposed in the path of the reflected rays, upstream of a photodetector for said rays, and projects into said rays. A mechanical modification causes the reflected rays to be absorbed, diffracted, reflected again and/or split to a higher or lesser extent by the body.
摘要翻译： 本发明涉及用于测量压力或力的光学装置，包括电磁辐射源，以及具有至少部分地反映电磁辐射源的电磁射线的表面的压力膜或螺旋弹簧。 本发明的装置的特征在于，它们尤其允许测量在静止和/或流动状态下的流体和其它可流动材料的甚至最轻微的压力变化，甚至在螺旋弹簧上甚至最轻微的机械变形。 为了做到这一点，电磁辐射源的射线入射到压力膜或螺旋弹簧的至少部分反射表面上。 具有反射层的固定位置体或固定位置体的至少一个部分设置在反射射线的路径中，用于所述射线的光电检测器的上游并投射到所述射线中。 机械修改使得反射的光线被身体吸收，衍射，反射和/或分裂到或多或少的程度。
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公开(公告)号：US20050006854A1
公开(公告)日：2005-01-13
申请号：US10885930
申请日：2004-07-06
申请人： Armin Diez , Gerald Eifler , Claudio Cavalloni , Peter Wolfer , Michael Schnepf
发明人： Armin Diez , Gerald Eifler , Claudio Cavalloni , Peter Wolfer , Michael Schnepf
IPC分类号： F02F11/00 , F02D35/00 , F16J15/08 , G01L23/06 , G01L23/10 , G01L23/16 , G01L23/18 , G01L23/22
CPC分类号： G01L23/222 , G01L23/10 , G01L23/16 , G01L23/18 , G01L23/22
摘要： A metallic cylinder head gasket for an internal combustion engine having at least one combustion chamber. The gasket includes at least one sheet-metal layer having at least one opening corresponding to the at least one combustion chamber of the internal combustion engine and at least one bore extending from the outer edge to the edge of the opening. A membrane, closing the bore at the combustion-chamber side is exposed to the gas pressure of the combustion chamber. A pressure sensor disposed in the sheet-metal layer is pressurized axially relative to the bore by movement of the membrane by the gas pressure of the combustion chamber.
摘要翻译： 一种用于具有至少一个燃烧室的用于内燃机的金属气缸盖衬垫。 垫片包括至少一个金属片层，其具有对应于内燃机的至少一个燃烧室的至少一个开口和至少一个从外边缘延伸到开口边缘的孔。 关闭燃烧室侧的孔的膜暴露于燃烧室的气体压力。 布置在金属薄板层中的压力传感器通过膜的运动被燃烧室的气体压力相对于孔轴向加压。
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4.发明授权
公开(公告)号：US5600070A
公开(公告)日：1997-02-04
申请号：US390970
申请日：1995-02-21
申请人： Marek Wlodarczyk
发明人： Marek Wlodarczyk
CPC分类号： G01M15/08 , G01L23/16 , G01L23/22 , G01L23/221 , G01L9/0047 , G01L9/0077
摘要： A cup shaped diaphragm having varying thicknesses reduces stress on the diaphragm and increases reliability of a fiber optic diaphragm sensor. The hermetic seal between the optical fiber and the ferrule body is removed from proximity of the diaphragm and is located near the opposite end of the ferrule. The effects on the ferrule of overpressure on the diaphragm are controlled by angling a portion of the ferrule tip adjacent the diaphragm. A method of sealing and locating the optical fiber to the ferrule of the sensor is described.
摘要翻译： 具有不同厚度的杯形隔膜减小了隔膜上的压力并提高了光纤隔膜传感器的可靠性。 光纤和套圈本体之间的气密密封从膜片的附近被去除并位于套圈的相对端附近。 通过使邻近隔膜的套圈末端的一部分倾斜来控制对隔膜上的超压套圈的影响。 描述了将光纤密封和定位到传感器的套圈的方法。
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5.发明授权
公开(公告)号：US5390546A
公开(公告)日：1995-02-21
申请号：US86245
申请日：1993-07-01
申请人： Marek T. Wlodarczyk
发明人： Marek T. Wlodarczyk
CPC分类号： G01L23/221 , G01L23/16 , G01L23/22 , G01L9/0077 , G01M15/08
摘要： The modulation depth of a fiber optic diaphragm sensor is increased by tapering the tip end of the optical fiber or fiber bundle. In a second embodiment, the modulation depth is increased by mechanically leveraging the diaphragm movement relative to the tip end of the optical fiber or fiber bundle. In either embodiment, the operating temperature of the tip end of the optical fiber or fiber bundle can be reduced relative to the operating temperature of the diaphragm. Thus, the diaphragm sensor can be directly exposed to combustion temperatures in an internal combustion engine and advantageously the sensor can be embodied in a spark plug adjacent the electrodes.
摘要翻译： 光纤隔膜传感器的调制深度通过使光纤或纤维束的尖端变细而增加。 在第二实施例中，通过机械地利用隔膜相对于光纤或纤维束的末端的运动来增加调制深度。 在任一实施例中，可以相对于隔膜的工作温度降低光纤或纤维束的末端的工作温度。 因此，隔膜传感器可以直接暴露于内燃机中的燃烧温度，并且有利地，传感器可以体现在与电极相邻的火花塞中。
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公开(公告)号：US5052214A
公开(公告)日：1991-10-01
申请号：US293228
申请日：1989-01-03
申请人： Ray R. Dils
发明人： Ray R. Dils
CPC分类号： F02D35/027 , F02D35/022 , F02D35/025 , G01L23/16 , G01L23/221 , G01L23/225
摘要： A knock detector for an internal combustion engine includes an optical fiber thermometer that senses variations in heat flow within an engine cylinder. The optical fiber thermometer includes a black body emitter disposed inside the cylinder which is heated by combustion gases to provide an optical output. The optical output is converted to an electrical signal whose fourier components are analyzed to determine whether a knock condition exists.
摘要翻译： 用于内燃机的爆震检测器包括感测发动机气缸内的热流的变化的光纤温度计。 光纤温度计包括设置在气缸内的黑体发射体，其由燃烧气体加热以提供光输出。 光输出被转换成电信号，其分析其傅立叶分量以确定是否存在爆震条件。
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公开(公告)号：US10039020B2
公开(公告)日：2018-07-31
申请号：US14517447
申请日：2014-10-17
发明人： Patrick Joseph Pratt
CPC分类号： H04W24/08 , G01L23/16 , G01R23/16 , H03J1/0091
摘要： A single complex calculation for locating a dominant frequency, such as an interfering signal in a frequency range, is replaced by several much easier ones. A signal is analyzed over a first frequency range to locate at least one comparatively significant frequency component therein. This can involve analyzing, using electronic hardware, a test range of frequencies to identify a potentially significant component within the test range; and determining, using electronic hardware, if a condition for finishing the analysis has been met. If the condition has not been met, the test range is modified as a result of the analysis and the operations of analyzing and determining are repeated.
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公开(公告)号：US07375314B2
公开(公告)日：2008-05-20
申请号：US10548167
申请日：2004-03-11
申请人： Dieter Karst
发明人： Dieter Karst
CPC分类号： G01M15/10
摘要： The invention relates to an optical sensor for detecting light emission in combustion processes in a combustion chamber. At least one lens of the sensor faces the combustion chamber and is disposed on the tip of the sensor. The inventive sensor is provided with a heating device, which is disposed on the tip thereof, in the region of the front lens. The heating device can be a wire coil, a laser or a conduit with heated fluid. The sensor can include a controller for controlling the temperature of the heating device so that the tip of the sensor can be heated by the heating device to a specific temperature at which any soot on the front lens is combusted. As a result, the sensor remains clean and operational during the entire measuring period as desired.
摘要翻译： 本发明涉及一种用于检测燃烧室内燃烧过程中的光发射的光学传感器。 传感器的至少一个透镜面向燃烧室并且设置在传感器的尖端上。 本发明的传感器设置有在前透镜的区域中设置在其顶端上的加热装置。 加热装置可以是线圈，激光器或具有加热流体的导管。 传感器可以包括用于控制加热装置的温度的控制器，使得传感器的尖端可以被加热装置加热到前透镜上的任何烟灰燃烧的特定温度。 结果，传感器在整个测量期间保持清洁并可操作。
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公开(公告)号：US06966217B1
公开(公告)日：2005-11-22
申请号：US10872046
申请日：2004-06-17
申请人： Marek T. Wlodarczyk
发明人： Marek T. Wlodarczyk
CPC分类号： G01L23/16
摘要： Several associated techniques and fiber optic constructions are disclosed to protect a diaphragm type fiber optic cylinder pressure sensor from the effects of maximum under hood temperatures and to minimize errors associated with rapidly changing under hood and engine temperatures. The techniques include electronic compensation in response to temperature change, fuel system cooling of the optoelectronic interface, construction of the interface and construction of the sensor tip.
摘要翻译： 公开了几种相关技术和光纤结构，以保护隔膜式光纤汽缸压力传感器免受最大罩内温度的影响，并最大限度地减少与罩罩和发动机温度下快速变化相关的误差。 这些技术包括响应于温度变化的电子补偿，光电接口的燃料系统冷却，接口的构造和传感器尖端的构造。
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公开(公告)号：US20050044959A1
公开(公告)日：2005-03-03
申请号：US10652370
申请日：2003-08-29
申请人： Clark Boyd , Charles Gause , Trevor Rice , Larry Vicari
发明人： Clark Boyd , Charles Gause , Trevor Rice , Larry Vicari
CPC分类号： G01L9/0039 , G01L23/16
摘要： A sensor assembly includes a stainless steel tubular housing. Within the housing is a polyetheretherketone tube and a sensor. An optical fiber joins the sensor to a transmission cable and is fixedly positioned within the tube. A first end of the housing includes a pressure transmission device or bellows and the second end of the housing is crimped about the tube to fixedly position the tube and the sensor within the housing. The sensor assembly is positioned within a channel of a gasket to obtain pressure data from a combustion chamber. This abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
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