Microprocessor controlled timing/tachometer apparatus

Details Microprocessor controlled timing/tachometer apparatus Microprocessor controlled timing/tachometer apparatus

1982-11-12

1986-03-25

Krass, Errol A.

Boots, shoes, and leggings

364569, 364565, 324391, G01M 1500, G01P 2102

Patent

active

045787557

ABSTRACT:
The apparatus comprises a combustion sensor to sense the combustion event in an engine, and a magnetic sensor to sense top dead center. Electrical signals from the sensors are converted to two trains of pulses which are applied to a microprocessor. Under the stored program, the microprocessor determines the time between pulses in one train and converts such time into engine speed in rpm. Also, the microprocessor determines degrees of rotation between corresponding pulses in the two trains. The offset angle, which is applied to a keyboard is subtracted from the degrees of rotation to provide the timing angle. The engine speed and timing angle appear in digital displays.

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