Signal generator for suppression of fuel supply actuation at top

Details Signal generator for suppression of fuel supply actuation at top Signal generator for suppression of fuel supply actuation at top

1978-05-12

1982-01-19

Myhre, Charles J.

Internal-combustion engines

Engine speed regulator

Engine speed reduction by fuel cutoff

123198DB, F02D 3100

Patent

active

043111246

ABSTRACT:
A signal generator for use with a fuel supply system which incorporates a fuel shut-off mechanism. The output signal from the signal generator is applied to the fuel shut-off mechanism whenever the engine exceeds a maximum speed. In order to detect this condition, rpm-synchronous pulses are applied to at least one, and preferably two cascaded multivibrators which control an input of a gate, the other input of which receives the rpm-dependent pulses. The output of the gate is active only if the period of the rpm-dependent pulses is less than the sum of the unstable time constants of the multivibrators, in which case a final multivibrator is triggered and generates a fuel suppression control signal during a large fraction of two crankshaft rotations.

REFERENCES:
patent: 3530314 (1970-09-01), Foerster
patent: 3651793 (1972-03-01), Roth et al.
patent: 3757750 (1973-09-01), Ohtani
patent: 3884203 (1975-05-01), Cliffgard
patent: 3914619 (1975-10-01), Talmage et al.
patent: 4058106 (1977-11-01), Drews et al.

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