R.P.M. - limiting circuit of an i.c. engine

Details R.P.M. - limiting circuit of an i.c. engine R.P.M. - limiting circuit of an i.c. engine

1990-06-04

1991-05-14

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

F02P 500

Patent

active

050146653

ABSTRACT:
The invention is a further development of an earlier arrangement of r.p.m. limitation (SE-P-452 355). The advantage of this invention is that the adjustment of pulse times is eliminated. The arrangement can be manufactured without cost demanding adjustment as the circuit is crystal-controlled which involves a great accuracy. As the r.p.m. increases, the pulse t.sub.2 of the second flip-flop comes closer to the next ignition pulse of the ignition system and, at the limitation speed, t.sub.2 begins to overlap the ignition pulse. The ignition time T is delayed and an ignition delay takes place with a subsequent limitation of the r.p.m.

REFERENCES:
patent: 4292939 (1981-10-01), Coatec et al.
patent: 4437442 (1984-03-01), Yamaguchi
patent: 4723520 (1988-02-01), Suzuki et al.
patent: 4930475 (1990-06-01), Daikoku et al.

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