Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-09-29
1979-02-13
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123 32EA, 123 32EE, F02D 3500
Patent
active
041389794
ABSTRACT:
An electrically controlled closed loop system for maintaining a desired air-fuel ratio within an internal combustion engine. An operator-positioned accelerator commands a given fuel flow into the engine and the flow of air is controlled by means of a servo-actuated throttle plate. The commanded fuel flow and present position of the throttle plate are used to generate a basic command signal for controlling the servo motor to adjusting the position of the throttle plate. A gas detector or roughness sensor positioned in the engine is responsive to the actual air-fuel mixture in the engine which may be greater than or less than the desired air-fuel mixture and an error signal is generated which can be used to modify or correct the basic control signal in a closed loop manner for selectively adjusting throttle plate position to more precisely maintain a desired air-fuel ratio. While the present type of system has inherent acceleration enrichment since the fuel enters before the air flow increases, an undesirable condition of excessive enrichment may occur. The rate of change of commanded fuel flow is monitored to anticipate an impending undesirable condition of excessive enrichment and a transient control signal adjustment spike is generated to momentarily increase air flow to minimize the undesirable condition even before the gas detector or roughness sensor actually detects the existence of same. A closed loop governing system for metering the fuel flow may also be provided, if desired.
REFERENCES:
patent: 3827237 (1974-08-01), Linder et al.
patent: 3858561 (1975-01-01), Aono
patent: 3861366 (1975-01-01), Masaki et al.
patent: 4019470 (1977-04-01), Asano
patent: 4057042 (1977-11-01), Aono
patent: 4061055 (1977-12-01), Ilzuka et al.
patent: 4075982 (1978-02-01), Asano et al.
patent: 4077207 (1978-03-01), Hattori et al.
Haas, Jr. Gaylord P.
Myhre Charles J.
Nelli Raymond A.
The Bendix Corporation
Wells Russel C.
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