Tachometer system for measuring the RPM of an internal combustio

Details Tachometer system for measuring the RPM of an internal combustio Tachometer system for measuring the RPM of an internal combustio

1988-07-06

1992-09-29

Snow, Walter E.

Electricity: measuring and testing

Electrical speed measuring

324169, 324173, G01P 342, G01P 348, G01P 354

Patent

active

051516543

ABSTRACT:
A tachometer system for an internal combustion engine. The tachometer system uses one of two electromagnetic pulse sensing means to detect an electromagnetic signal produced by a firing of the engine. The sensing device may be an antenna or an inductive pickup. One of the signals is chosen and processed. A parameter indicative of pulse timing in the output signal is determined. This parameter is most advantageously a time between different ones of the output signals. The parameter is then converted into a value indicative of revolutions per unit time of the engine. The converting structure is advantageously formed by a personal computer.

REFERENCES:
patent: 3811089 (1974-05-01), Strzelewicz
patent: 4594886 (1986-06-01), Chen
patent: 4687991 (1987-08-01), Kruncos
patent: 4745554 (1988-05-01), Tomozawa et al.

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