专利检索 ap:("Robert D. Braun" OR "Matthew M. Crass" OR "James R. Piehl" OR "David J. Schend" OR "Gary S. Wollert" OR "Jerry W. Mueckl" OR "Thomas P. Becker") AND inv:"David J. Schend" 第 1 页

1.

发明授权
Method and apparatus for determining relative contributions of individual cylinders of internal combustion engine using contact tachometer 失效
标题翻译：使用接触式测速仪确定内燃机个人气缸相对贡献的方法和装置

公开(公告)号：US5182512A

公开(公告)日：1993-01-26

申请号：US604191

申请日：1990-10-29

申请人： Robert D. Braun , Matthew M. Crass , James R. Piehl , David J. Schend , Gary S. Wollert , Jerry W. Mueckl , Thomas P. Becker

发明人： Robert D. Braun , Matthew M. Crass , James R. Piehl , David J. Schend , Gary S. Wollert , Jerry W. Mueckl , Thomas P. Becker

IPC分类号： G01M15/04

CPC分类号： G01M15/046 , F02D2200/1015

摘要： A linearly moving external part on a multi-cylinder internal combustion engine is contacted with a hand-held rotary encoder, contact tachometer having a hollow handle in which processing circuitry is disposed for converting the rotary encoder output to a waveform signal. This signal, along with a signal responsive to the firing of the number one cylinder, are applied to an engine analyzer processor for display of a single engine cycle of the waveform signal on the CRT oscilloscope of the engine analyzer. The variations in amplitude of the waveform signal correspond to speed variations of the moving part over an engine cycle to give an indication of the relative power contributions of the individual cylinders.