Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1979-05-01
1981-02-03
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123440, F02M 5102
Patent
active
042481961
ABSTRACT:
A closed loop fuel management system is disclosed in which an improved dual integral controller provides both transient and gross correction for an electronic fuel injection system operating at a predetermined air/fuel ratio. The controller has cascaded dual integrators including a primary integrator with a relatively fast integration rate utilized for transient control and a secondary integrator with a relatively slow integration rate utilized for gross control such as ageing effects and altitude compensation. The controller responds to several engine operating conditions and to rich fuel power demands to switch from closed loop to open loop control while maintaining the gross system correction provided by the operating point of the secondary integrator.
REFERENCES:
patent: 3990411 (1976-11-01), Oberstadt et al.
patent: 4121554 (1978-10-01), Sueishi et al.
patent: 4123999 (1978-11-01), Asano
patent: 4132200 (1979-01-01), Asano et al.
patent: 4142482 (1979-03-01), Asano et al.
Argenbright Tony M.
Marvin William A.
The Bendix Corporation
Wells Russel C.
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