Digital engine analyzer

Details Digital engine analyzer Digital engine analyzer

1993-05-14

1994-03-22

Hjerpe, Richard

Computer graphics processing and selective visual display system

Data responsive crt display control

Graphic display

345140, 731173, 324394, 36443104, G09G 100

Patent

active

052968693

ABSTRACT:
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 and calculates and display spark plug burn time information derived from a single analog input signal, the data being displayed in both numerical and bar graph form. The measured burn time is the time that the ignition voltage signal is above a predetermined threshold level which is greater than the amplitude of the ringing portion of the ignition voltage signal.

REFERENCES:
patent: 4004213 (1977-01-01), Kato et al.
patent: 4291383 (1981-09-01), Tedeschi et al.
patent: 4417467 (1983-11-01), Higgs et al.
patent: 4558280 (1986-12-01), Koehl et al.

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