Measuring and testing – Simulating operating condition – Marine
Patent
1995-05-22
1997-06-24
Chilcot, Richard
Measuring and testing
Simulating operating condition
Marine
73116, 738659, G01M 1500
Patent
active
056418981
ABSTRACT:
An ignition module tester is provided for testing ignition modules associated with motor vehicles. The ignition module tester includes an oscillator for simulating an output signal from the pick-up coil associated with the ignition module being tested. An EXCLUSIVE-OR GATE is provided for comparing the output from the oscillator with an output signal from the ignition module, with any variance detected being indicative of a faulty ignition module. The oscillator outputs a signal at approximately equal to the frequency of a pick-up coil associated with a vehicle operating at 150 MPH, or approximately 500 Hz, such that a greater accuracy is provided by the ignition module tester as compared to conventional devices. In another embodiment, an ignition module tester is provided for testing a distributorless ignition system (DIS). The ignition module tester for use with DIS ignition modules is contained within a housing, with a plurality of leads being provided for making appropriate electrical connections. A plurality of LED's is provided for displaying the performance of the ignition module, including the ignition module output, the fuel injector feedback signal, the reference signal, and the tachometer signal. A green LED and a red LED is provided for each output signal, with a green LED indicating proper working function and a red LED indicating a malfunction. A pair of leads are provided for emulating the crank shaft signal. In similar fashion, leads are provided for emulating the cam shaft signal. A lead is provided for electrical connection to one of a plurality of pins for selecting the proper ratio of crankshaft to cam shaft signals.
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Chilcot Richard
Dombroske George M.
LandOfFree
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