Rotational speed control system for internal combustion engine

Details Rotational speed control system for internal combustion engine Rotational speed control system for internal combustion engine

1992-10-06

1993-10-19

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123339, 123357, F02D 4114

Patent

active

052536262

ABSTRACT:
A rotational speed control system for an internal combustion engine capable of preventing a dead time or dead section from occurring in controlling of a rotational speed of the engine. An integrating circuit is controlled by means of an output of a comparator for comparing a rotational speed detection signal with a target rotational speed setting signal, to thereby obtain an integral voltage which falls and rises when the rotational speed detection signal is above and below the target rotational speed setting signal, respectively. Comparison of the integral voltage with a sawtooth signal voltage leads to a pulse signal subjected to pulse width modulation. The pulse signal is fed to an actuator driving circuit to carry out on-off controlling of a drive current for the actuator. Connection of voltage limiting circuits to the integrating circuit causes a variation of the integral voltage to be limited within a range of amplitude of the integral voltage, to thereby eliminate the dead time or dead section.

REFERENCES:
patent: 3724433 (1973-04-01), Voss et al.
patent: 4138975 (1979-02-01), Hamelin et al.
patent: 4242994 (1981-01-01), Keely
patent: 4286685 (1981-09-01), Rudolph et al.
patent: 4289100 (1981-09-01), Kinugawa et al.
patent: 4306527 (1981-12-01), Kinugawa et al.
patent: 4669436 (1987-06-01), Nanjyo et al.

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