Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-09-28
1979-10-09
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123139AF, 261 39A, 261 50A, F02D 302
Patent
active
041702042
ABSTRACT:
A fuel injection system is provided for a mixture-compressing spark-ignition internal combustion engine having continuous fuel injection into the engine intake manifold, and an adjustable throttle valve in the manifold. A flow sensing element in the intake manifold is arranged to move in accordance with the quantity of air flowing through the manifold to operate a fuel-metering valve for dispensing a quantity of fuel proportion to the quantity of air. A constant pressure valve is arranged to ensure a substantially constant pressure differential across the metering valve. The constant pressure valve has two chambers separated from each other by a movable partition element. A differential pressure regulating valve also has two chambers separated by a movable partition element. The first chamber has a constant pressure valve being subject to the pressure downstream of the metering valve and communicates with a fuel injection nozzle of the engine. The second chamber of the constant pressure valve communicates with the first chamber of the differential pressure regulating valve. The second chamber of the differential pressure regulating valve is subject to the pressure upstream of the metering valve. The two chambers of the constant pressure valve are connected to each other by a passage.
REFERENCES:
patent: 2683418 (1954-07-01), Smith, Jr.
patent: 2809022 (1957-10-01), Chandler
patent: 3805758 (1974-04-01), May
patent: 3809036 (1974-05-01), Knapp et al.
patent: 3967607 (1976-07-01), Eckert
patent: 3994267 (1976-11-01), Eisele et al.
patent: 4018200 (1977-04-01), Stumpp et al.
Audi NSU Auto Union Aktiengesellschaft
Dolinar Andrew M.
Myhre Charles J.
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