Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1990-10-29
1993-01-26
Strecker, Gerard R.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
73529, 73116, 324378, G01P 350, G01M 1500
Patent
active
051825120
ABSTRACT:
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.
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Becker Thomas P.
Braun Robert D.
Crass Matthew M.
Mueckl Jerry W.
Piehl James R.
Edmonds W. S.
Snap-on Tools Corporation
Strecker Gerard R.
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