Digital engine analyzer

Details Digital engine analyzer Digital engine analyzer

G - Physics

01

M

G01M 15/00 (2006.01) F02P 17/08 (2006.01)

Patent

CA 2048299

A digital engine analyzer has an oscilloscope display and is controlled by microprocessors operating under menu-driven stored program control. The analyzer receives analog input signals from an engine being analyzed, engine identification and parameter data entered via a keyboard, function and mode data selected by keyboard, and data communicated from an engine on-board computer via a hand-held scanner device. The analyzer calculates and displays spark plug burn time information derived from a single analog input signal, a historical display of peak ignition voltage values for a selected cylinder over a number of engine cycles and real time cylinder time balance information. Peak capture circuitry permit the display of a full cylinder period of a waveform, even though it contains very high frequency portions, by selectively switching between normal and high resolution modes. The scanner interface permits the scanner control functions to be effected from the analyzer keyboard.

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