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1. 发明授权

US4246780A Force sensing system 失效
标题翻译：力传感系统
公开(公告)号：US4246780A
公开(公告)日：1981-01-27
申请号：US34886
申请日：1979-04-30
申请人： Jay R. Reed
发明人： Jay R. Reed
IPC分类号： G01L5/12
CPC分类号： G01L5/12
摘要： Apparatus for measuring thrust loading on a rotating shaft. A plurality oftrain gages, electrically connected in parallel and series to form one arm of a Wheatstone bridge circuit, are mounted at equal intervals on a thin strap or band formed to surround the shaft with a predetermined hoop load. Lubricating material disposed between the shaft and the band prevents transfer of friction forces from the shaft to the band. As the thrust loading increases, shaft dilation (girth increase) causes the band to stretch and increase its stress. This hoop stress is measured by the strain gages mounted on the band, and is transmitted as the output signal produced by the bridge via radio telemetry or slip rings to a remote indicator. A second arm of the Wheatstone bridge circuit, to provide compensation for temperature effects, can be provided by an additional strain gage mounted on a block of material identical to that of the shaft which block is in turn mounted on the above thin strap or band.
摘要翻译：用于测量旋转轴上的推力载荷的装置。并联电连接并形成惠斯登电桥电路的一个臂的多个应变片以相等的间隔安装在以规定的环箍负载围绕轴的薄带或带上。设置在轴和带之间的润滑材料防止摩擦力从轴传递到带。随着推力载荷的增加，轴的膨胀（环长度增加）会使带伸展并增加其应力。该环向应力由安装在带上的应变片测量，并作为由桥接器通过无线电遥测或滑环产生的输出信号传输到远程指示器。惠斯登电桥电路的第二臂可以通过安装在与轴相同的材料块上的附加应变计来提供温度效应的补偿，该块的材料依次安装在上述薄带或带上。

2. 发明授权

US5712424A Method and apparatus for measuring diesel engine cylinder pressure 失效
标题翻译：柴油机气缸压力测量方法和装置
公开(公告)号：US5712424A
公开(公告)日：1998-01-27
申请号：US621276
申请日：1996-03-25
申请人： Jay R. Reed
发明人： Jay R. Reed
IPC分类号： G01L5/00 , G01L23/18 , G01M15/09 , G01M15/00
CPC分类号： G01M15/09 , G01L23/18
摘要： A nonintrusive diesel engine cylinder pressure transducer includes a congruously shaped fuel injector stud which has been internally instrumented with full-bridge electrical resistance strain gage circuitry. The instrumented fuel injector stud has a hole which has been bored axially lengthwise and a full Wheatstone bridge strain gage unit which has been situated in the hole. While the engine is running, the operative instrumented fuel injector stud, which has been replaced in its normal position in the fuel-injector/cylinder assembly, acts in combination with other assembly components as a cylinder pressure transducer. Measurements of tension and compression of the stud are provided which are reflective of pressure, mainly due to compression and combustion, in the engine cylinder. The full-bridge configuration eliminates bending effects and affords electrical temperature compensation. Practice of this invention advantageously avails existing structure. The present invention involves no structural impairment and therefore risks none of the concomitant deleterious mechanical effects, thus obviating the conventional need to compromise the structural and functional integrity of the diesel engine in order to measure cylinder pressure.
摘要翻译：非侵入式柴油发动机气缸压力传感器包括一体形状的燃料喷射器螺柱，其内部具有全桥电阻应变计电路。仪表化的燃料喷射器螺柱具有沿轴向方向钻孔的孔和位于孔中的完整惠斯登电桥应变计单元。当发动机运行时，在燃料喷射器/气缸组件中已经被更换在其正常位置的操作装置的燃料喷射器螺柱与其它组件部件组合作为气缸压力传感器起作用。提供了柱塞的张力和压缩测量，其反映了压力，主要是由于发动机气缸中的压缩和燃烧。全桥配置消除了弯曲效应，并提供电温补偿。本发明的实践有利地利用现有的结构。本发明不涉及结构损伤，因此不会产生伴随的有害机械效应，因此消除了为了测量气缸压力而损害柴油发动机的结构和功能完整性的常规需要。

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