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AssigneeFMC Corporation
InventorsMarvin R. Crummer, Kenneth S. Gold, David G. Johnson, Tom R. Vandermeyden, Edmond R. Pelta
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An internal combustion engine analyzer provides both data acquisition and data processing and includes an analog waveform analysis subsystem together with a general purpose background system wherein appropriate power distribution is provided for the system as a whole and peripheral equipment such as a printer, keyboard and an analog/digital CRT is also provided. The input signals to be analyzed are waveforms generally associated with internal combustion engines and peripheral equipment. Exemplary waveforms are the primary and secondary ignition waveforms. The waveforms are attenuated to reasonable levels and multiplexed to analog circuitry which serves to measure waveform magnitude at one or more sampling points along the length of the wave and to also measure the manner in which the characteristics of the waveform change. The analog measurements are digitized and coupled to a processor which in turn controls the operation of the analog circuitry. The digitized measurements together with previously entered engine identification data are analyzed by the processor to thereby control subsequent data taking and to generate appropriate maintenance and repair instructions which are communicated visually to an operator in the disclosed embodiment.
An internal combustion engine wave characteristic analyzer for a two dimensional wave signal representative of an operating characteristic of the engine wherein predetermined wave characteristic data are held in storage, comprising means for receiving the wave signal and for providing a plurality of sampled output signals corresponding to wave characteristics at a plurality of positions along the length of the wave, means for receiving and storing data indicative of said plurality of output signals, means for continuously performing analysis of ones of said plurality of output signal data utilizing others of said plurality of output signal data and ones of said predetermined wave characteristic data, thereby providing a discrete analysis signal, means for continuously receiving and diagnosing the engine operating characteristic in view of said discrete analysis signal and for providing a diagnostic signal for the engine operating characteristic responsive thereto, means coupled to said diagnostic signal for providing an instruction output relating to operations required to retain and reestablish the predetermined wave characteristic, and means for alphanumerically displaying said instruction output.
An engine analyzer for determining characteristics of a two dimensional wave signal associated with an internal combustion engine, comprising means for sampling a plurality of the wave signals at a controlled sample point on the wave signals and for providing a signal amplitude measurement at the sample point along the length of the wave, means for storing an indication of each of said amplitude measurements, means for processing ones of said signal amplitude measurements to obtain at least one reference indication, means for comparing ones of said stored indications with said reference indication, thereby providing a comparison signal, a processor connected to receive said comparison signal, said processor being coupled to a diagnosis storage, means for fetching analysis information from a predetermined location in said diagnosis storage corresponding to said comparison signal, said analysis information including instructions for altering the wave characteristics to obtain predetermined wave characteristics, and means for displaying said instructions.
A wave characteristic analyzer for periodic waveforms generated by and representative of operating characteristics of an internal combustion engine and peripheral equipment associated therewith, comprising means for receiving each wave signal and for providing first and second sampled output signals corresponding to the wave characteristics at first and second sample points respectively along the length of the wave, means for receiving and storing data indicative of said first and second sampled output signals, means for comparing said stored data obtained from successive ones of said periodic waveforms and relating to said sampled output signals thereby providing an analysis signal, a processor for receiving and diagnosing the operating characteristics in accordance with said analysis signal and for providing a diagnostic signal related thereto, said processor further operating to select said first and second sample points.
An analyzer for use by an operator in determining deviations from normal characteristics of a two dimensional waveform signal produced by a machine wherein the waveform signal has a substantially predetermined shape for normal operation of the machine, comprising means for receiving and for conditioning the waveform signal, means coupled to said means for receiving for sampling said conditioned waveform signal, for providing data signals corresponding to said waveform samples, for continuously processing said data signals, for continuously controlling said means for receiving and conditioning, and for continuously diagnosing deviation of said data signals from the normal waveform characteristics utilizing others of said data signals, means coupled to said means for diagnosing for providing instructions for machine repairs to maintain and reestablish normal waveform characteristics, and means for communicating said instructions to the operator.
An analyzer for use by an operator in determining deviation from normal characteristics of an internal combustion engine ignition waveform wherein the engine ignition system includes ignition points, coil and spark plugs and the engine specifications are entered into a memory, comprising
An analyzer for determining deviation from normal characteristics of an ignition waveform produced by an internal combustion engine ignition system, wherein the ignition system contains ignition points, distributor, coil, condensor, spark plugs and ignition system conductors, and wherein engine identification code is entered into a memory, comprising
Dependencies are inferred from the claim text.