Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1974-02-25
1982-02-09
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123483, 123484, F02B 300
Patent
active
043145388
ABSTRACT:
An electronic fuel control system of the type providing fuel delivery controlling signals during the period of time that at least a portion of a controlled signal maintains a preselected relationship with respect to particular value is provided with circuit means for continuously providing a variable correction factor. The injection controlling signal is produced by generating a time varying voltage which varies in a predetermined fashion following the occurrence of a triggering event. The generated voltage signal has a first or correction portion and a second or injection controlling portion. The magnitude of the first portion is modulated as a function of the time elapsed from the most recently to have occurred triggering event to provide accurate information to controllably affect fuel delivery. The circuitry of the present invention provides a plurality of voltage level establishing means which may be sequentially operable to establish a maximum charge on the timing capacitor and further includes controllable energy discharge means to vary the control charge from a higher to a lower value. In addition, further switching means are illustrated to controllably sequence the application of the circuitry of the present invention between selected ones of a plurality of timing capacitors which are to be sequentially operated.
REFERENCES:
patent: Re29060 (1976-12-01), Reddy
patent: 3727081 (1973-04-01), Davis et al.
patent: 3734068 (1973-05-01), Reddy
patent: 3742919 (1973-07-01), Suda
Cox Ronald B.
Flagg Gerald K.
The Bendix Corporation
Wells Russel C.
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