Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1976-09-17
1979-11-27
Jordan, Charles T.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 3900
Patent
active
041755286
ABSTRACT:
A fuel supply device comprising auxiliary throttle means located in the intake pipe upstream of an operator actuatable throttle means and a source of pressurized fuel comprising a delivery circuit which opens into a portion of the intake pipe downstream of the main throttle means, the delivery circuit being controlled by at least one solenoid valve. A metering system, which is sensitive to the degree of opening of the auxiliary throttle means, has means supplying repeating pulse signals. The metering system supplies the solenoid valve with one energization signal per pulse signal repetition period which has a duration equal to a fraction of the period which is adjusted by the metering system. The source of fuel has a pressure regulator comprising a relief valve which is biased toward opening by the fuel delivery pressure and toward closure by the vacuum in a chamber connected to the intake pipe. The chamber is bounded by a diaphragm, to which the closure member of the valve is connected. The duct connecting the chamber to the intake pipe communicates with the atmosphere via a second solenoid valve associated with an energizing electric circuit constructed to supply the second solenoid valve with repetitive excitation signals having a duration which varies in dependence on an engine operating parameter.
REFERENCES:
patent: 3596645 (1971-08-01), Mennesson
patent: 3911884 (1975-10-01), Moriya et al.
patent: 3963009 (1976-06-01), Mennesson
Jordan Charles T.
Societe Industrielle de Brevets et d'Etudes (S.I.B.E.)
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