Measuring and testing – Engine detonation – Specific type of detonation sensor
Patent
1996-10-02
1998-02-03
Dombroske, George M.
Measuring and testing
Engine detonation
Specific type of detonation sensor
731173, 340439, 324399, 324402, G01M 1500
Patent
active
057146799
ABSTRACT:
An apparatus for testing an internal combustion engine is disclosed. The apparatus comprises a probe for electrical connection to at least one spark plug wire of the engine being tested. A peak hold circuit operates to store a representation of a peak firing voltage of the rectified secondary ignition signal and attenuates the stored representation at a predetermined rate over time to enable measurement of peak firing voltage. The testing apparatus is connected to a voltmeter to display a value of the peak firing voltage. Alternatively, the testing apparatus includes a display for displaying the value of the peak firing voltage. Preferably, the testing apparatus is housed in a housing of a size to be held in a user's hand, with a power supply contained therein.
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Advertisement of "Digital Ignition System Analyzer", JC Whitney catalog, Nov. 1995.
Advertisement and coupon for "MT2700 DIS/kv Probe", Snap-on.RTM. catalog, Jan. 1995.
Product Outline of "Ignition System Tester ZT 81", Nov. 1994.
Brown Karl E.
Kyrola Randee L.
Nichols Steven J.
VandeZande Eric J.
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