Process and apparatus for the stabilization of the period of ope

Details Process and apparatus for the stabilization of the period of ope Process and apparatus for the stabilization of the period of ope

1976-11-18

1979-02-20

Myhre, Charles J.

Internal-combustion engines

Noncompression

123 32EA, 123119EC, 323 19, F02B 300, G05F 144, F02M 5100

Patent

active

041400844

ABSTRACT:
The period of opening of a solenoid-operated fuel injector is stabilized against variation of vehicle battery voltage by computing the period of injector opening from the instant of a discontinuity present in each rise of the solenoid energizing current. The discontinuity is detected and differentiated to form one input to a comparator, the other input of which is supplemented from the vehicle battery through a Zener diode so that the comparison threshold of the comparator increases as the battery voltage increases. The comparator is automatically switched off in the absence of a solenoid energizing current.

REFERENCES:
patent: 3483851 (1969-12-01), Reichardt
patent: 3763720 (1973-10-01), Aono et al.
patent: 3858561 (1975-01-01), Aono
patent: 3897762 (1975-08-01), Jones et al.
patent: 3965410 (1976-06-01), Roselle et al.
patent: 3978391 (1976-08-01), Migeon et al.
patent: 4040397 (1977-08-01), Leichle

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