公开(公告)号：US4122706A

公开(公告)日：1978-10-31

申请号：US814891

申请日：1977-07-12

申请人： Oluf R. Schmidt

发明人： Oluf R. Schmidt

IPC分类号： G01L23/20 ,  F02B3/06 ,  F02B75/02 ,  F02B75/20 ,  F02D35/00 ,  G01L23/00 ,  G01L23/08 ,  G01L23/30 ,  G01M15/00

CPC分类号： G01L23/08 ,  F02B75/20 ,  F02B2075/025 ,  F02B3/06

摘要： An apparatus for measuring instantaneous values of pressure in the cylinders of a reciprocating engine and/or for computing the mean indicated pressure. A transducer associated with each cylinder senses the pressure at moments determined by sensing means co-operating with markings provided on a part of the engine, which effects a reciprocating movement synchronously with the movement of the piston. The markings may have the shape of equidistantly disposed teeth of uniform width and may be provided on the piston rod or on a piston coolant carrying telescopic tube. The sensing means may be of an inductive type which generates control pulses whenever a marking is passing by. The signals from the transducer and the sensing means are transmitted to an electronic calculator associated with a display for computing and visualizing the mean indicated pressure and other engine parameters.

摘要翻译： 一种用于测量往复式发动机的气缸中的压力的​​瞬时值和/或用于计算平均指示压力的装置。 与每个气缸相关联的传感器感测在与设置在发动机的一部分上的标记配合的感测装置确定的时刻处的压力，其与活塞的运动同步地进行往复运动。 标记可以具有均匀宽度的等距布置的齿的形状，并且可以设置在活塞杆或携带伸缩管的活塞冷却剂上。 感测装置可以是感应式，每当标记通过时产生控制脉冲。 来自换能器和感测装置的信号被传送到与显示器相关联的电子计算器，用于计算和可视化平均指示的压力和其它发动机参数。