Method and apparatus for determining relative contributions...

Details Method and apparatus for determining relative contributions... Method and apparatus for determining relative contributions...

G - Physics

01

M

G01M 15/00 (2006.01) G01M 15/04 (2006.01)

Patent

CA 2053436

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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