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1. 发明授权

US5744705A Method and apparatus for engine testing 失效
标题翻译：发动机试验方法和装置
公开(公告)号：US5744705A
公开(公告)日：1998-04-28
申请号：US512353
申请日：1995-08-07
申请人： Edward J. Derouen , Keith J. Franovich
发明人： Edward J. Derouen , Keith J. Franovich
IPC分类号： G01B11/14 , G01M15/00
CPC分类号： G01B11/14 , G01M15/00 , Y10S33/15 , Y10S33/17
摘要： The invention relates to a method of, and apparatus for, determining the clearance between wear surfaces of a reciprocating piston engine and the surrounding cylindrical bore of the engine block, without need for physical contact with the piston. As particularly distinguished from the prior art, the present invention employs an energy wave source, collimated to impinge against selectable portions of the piston head either during its reciprocation, or at rest, in the so-called combustion or compression chamber between the moving piston and the engine cylinder. The energy source may be optical, electro-optical, acoustico-optical, or electromagnetic, generating continuous waves or high frequency pulses, or which are capable of reflecting such energy back to a plurality of detectors Such detectors are capable of measuring exceptionally high frequency (short wave lengths) signals to measure time (and hence distance) from the source to the piston head back to the detector. Advantage is particularly taken of multiple reflection points and multiple detectors to generate a composite signals or to separately record individual signals which are then processed to identify the location as well as the distance of any of several different friction areas relative to the source.
摘要翻译：本发明涉及一种用于确定往复活塞发动机的磨损表面与发动机缸体的周围圆柱形孔之间的间隙的方法和装置，而不需要与活塞物理接触。与现有技术特别区别，本发明采用能量波源，其准直以在活塞头的往复运动期间或在静止时与所述活塞头的可选择部分相撞，在活动活塞和发动机气缸。能量源可以是光学，电光学，声光学或电磁学，产生连续波或高频脉冲，或者能够将这种能量反射回多个检测器。这样的检测器能够测量异常高的频率（短波长）信号，以测量从源到活塞头返回到检测器的时间（因此距离）。特别是采用多个反射点和多个检测器来产生复合信号或分别记录各个信号，这些信号然后被处理以识别位置以及相对于源的几个不同摩擦区域中任何一个的距离。

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