Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-05-10
1976-04-06
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123117R, 1231465A, F02P 510
Patent
active
039482324
ABSTRACT:
An altitude compensated vacuum control system for regulating the vacuum servo mechanism of an internal combustion engine of the type having a distributor with a vacuum servo controlled advance mechanism incorporating a positive stop for maximum spark advance, a carburetor to provide a source of vacuum to operate said vacuum servo mechanism and a vacuum control valve assembly for regulating the vacuum servo mechanism of said distributor. The vacuum control valve assembly receives a spark port vacuum signal from the carburetor to maintain a predetermined vacuum spark advance as the engine begins to accelerate. Upon attaining the predetermined vacuum spark advance and at a given speed, the control assembly becomes operative to sum the initial first predetermined level vacuum signal to a secondary altitude compensated vacuum source signal, which is a function of an engine operating parameter, thereby causing the vacuum servo spark advance mechanism in the distributor to obtain a maximum spark advance by moving to a positive stop within the distributor. This full vacuum advance is maintained independent of the degradation of the vacuum signals as a result of changes in altitude, provided the spark port signal is greater than the full vacuum spark advance signal.
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Gould Richard H.
Ludwig George
VanOphem Remy J.
Walters William J.
Antonis W. N.
Argenbright Tony
Myhre Charles J.
The Bendix Corporation
Van Ophem Remy J.
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