Delayed response disabling circuit for closed loop controlled in

Details Delayed response disabling circuit for closed loop controlled in Delayed response disabling circuit for closed loop controlled in

1977-09-06

1980-02-05

Myhre, Charles J.

Internal-combustion engines

Noncompression

123 32EE, 123 32EH, 123119EC, 60276, 60285, F02B 308, F02M 712, F01N 308

Patent

active

041866916

ABSTRACT:
A disabling circuit for a closed loop fuel controlled internal combustion engines of the type wherein fuel is completely cut off during deceleration includes a circuit for generating an electrical signal of a duration corresponding to the duration of fueld cut-off. A timing circuit respectively insensitive and sensitive to electrical signals of short and long durations derives a disabling signal which clamps the feedback signal to a suitable control voltage until the end of the electrical signal. The timing circuit is responsive to the end of the electrical signal to introduce a delay time to prolong the disabling signal and prevent the lean mixture fuel cut-off periods from adversely affecting control system when it resumes closed loop operation.

REFERENCES:
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patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 3919983 (1975-11-01), Wahl et al.
patent: 3938075 (1976-02-01), Reddy
patent: 3938479 (1976-02-01), Oberstadt
patent: 3939654 (1976-02-01), Creps
patent: 3990411 (1976-11-01), Oberstadt et al.
patent: 4040408 (1977-08-01), Kraus et al.
patent: 4064846 (1977-12-01), Latsch et al.
patent: 4094274 (1978-06-01), Harada et al.
patent: 4123999 (1978-11-01), Asano

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