Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-08-15
1976-09-28
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123103R, 180108, 180109, F02D 1108
Patent
active
039825108
ABSTRACT:
A throttle motion control device for an automotive vehicle engine that is adapted to warn the driver of the vehicle to avoid operation of the engine in a manner to cause excessive fuel consumption by providing a stiff accelerator pedal feel when manifold vacuum pressure drops below predetermined values, the throttle motion control device including a vacuum motor operatively connected to the accelerator pedal and adapted to be actuated by a vacuum signal to apply a predetermined force on the accelerator pedal in a direction opposite to that applied by the driver to open the throttle, a first vacuum switch and a second vacuum switch being connected in series between a source of engine vacuum and the vacuum motor to control the flow of vacuum signals to the vacuum motor, the first vacuum switch being connected to the source of engine vacuum and by a conduit to the second vacuum switch, the conduit having an orifice therein controlling flow between the first and second vacuum switches, this conduit also having a bleed orifice therein open to the atmosphere and, the second vacuum switch being connected to the vacuum motor by a second conduit having a flow control orifice therein and a bleed orifice to the atmosphere.
REFERENCES:
patent: 3021827 (1962-02-01), Brunner
patent: 3133610 (1964-05-01), Sheppard
Anderson William
General Motors Corporation
Krein Arthur N.
Myhre Charles J.
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