Electronic regulating device for rpm regulation in an internal c

Details Electronic regulating device for rpm regulation in an internal c Electronic regulating device for rpm regulation in an internal c

1983-04-11

1984-01-31

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

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

123339, 123359, F02D 104

Patent

active

044283415

ABSTRACT:
An electronic regulating device for regulating the rpm of an internal combustion engine having self-ignition in accordance with at least rpm, fuel quantity and accelerator-pedal position is proposed. The device has a PI regulator with feedback, for example, and is characterized in that the regulator itself is controllable in accordance with the respective rpm deviation. This is effected, with a view to the desired stability of operation, even in the presence of very steep characteristic curves, and the control is effected with a limitation of the respective maximum rpm deviation. To this end, one upper and one lower threshold characteristic curve are realized at either side of a static shutoff characteristic curve. These threshold curves are formed in accordance with rpm and accelerator-pedal position, and where there is a discrete regulator structure, in the case of limitation, they determine the voltage over the capacitor of the regulator determining the I component. With a view to the very steep characteristic curves which are desired, a feedback of the regulator output signal is provided, and the feedback component may have a proportional course or may follow a specific function.

REFERENCES:
patent: 3796197 (1974-03-01), Locher et al.
patent: 3952829 (1976-04-01), Gray
patent: 4279229 (1981-07-01), Arnold et al.
patent: 4367708 (1983-01-01), Nakamura et al.

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