Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1992-04-06
1993-12-28
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324663, 73 6143, G01R 2726, G01N 1500
Patent
active
052743357
ABSTRACT:
Disclosed is an oil sensor system having an oil sensor including two spaced apart electrodes, a triangular waveform means, a comparison means and a signal means. The oil system is used in situ (i.e., used directly in the engine) to determine the presence of two-stroke or four-stroke oil, or the occurrence of an engine malfunction, such as a leakage of antifreeze into the oil.
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Lee Han-Sheng
McGrath Phillip B.
Staley David R.
Wang Su-Chee S.
Brooks Cary W.
General Motors Corporation
Regan Maura K.
Wieder Kenneth A.
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