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US 4,172,438 AGranted
Valve device and system employing same
AssigneeThe Ferry Cap & Set Screw Company
InventorAndrew E. MacGuire
Life of this patent
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AssigneeThe Ferry Cap & Set Screw Company
InventorAndrew E. MacGuire
Estimating the term…
Valve device includes a valve chamber containing three spherical members of different hardnesses in stacked relation therein, which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion engine to maintain a narrow band air/fuel ratio over substantially all operating modes. The valve chamber has relatively narrow entry and exit orifices in order to increase the velocity of the pulsations generated therein while at the same time reducing the amount of supplemental air flow through the device. The valve seat also has a conical shape to establish line contact with one of the spherical members to assist in obtaining maximum resonation during operation and provide a more positive seal when the engine is not running. The pulsating air from the valve device is preferably introduced into the carburetor beneath the throttle plate in close proximity below the gas idle jets, providing pressure waves therein that produce turbulence substantially throughout the manifold to assist in remixing and atomizing of the fuel and air, whereby substantially equal air/fuel ratio is supplied to every cylinder for better fuel combustion, with consequent increased power, reduced exhaust pollution, and improved fuel economy.
In combination with an internal combustion engine having an intake manifold and carburetor, pressure responsive valve means for supplying a substantially constant pulsating air flow to said carburetor over substantially the full operating range of the engine, said carburetor including a throttle plate, and gas idle jets beneath said throttle plate, said carburetor having an inlet for such pulsating air beneath said throttle plate in close proximity below said gas idle jets, whereby such pulsating air creates turbulence in the air flow entering said carburetor and manifold resulting in shock waves which assist in breaking up the fuel into smaller, more uniform particle sizes and maintaining a substantially constant air/fuel mixture which is supplied to each of the engine cylinders over such operating range.
In combination with an internal combustion engine having an intake manifold and carburetor, pressure responsive valve means for supplying a substantially constant pulsating air flow to said engine over substantially the full operating range thereof, said valve means comprising a valve chamber having an inlet and an outlet, and three spherical members in stacked relation within said chamber intermediate said inlet and outlet, said spherical members being responsive to vacuum pressure at said outlet to produce a substantially constant pulsating air flow at said outlet, said inlet having a valve seat engageable by one of said spherical members, said one spherical member being made of a semi-hard material to provide better response at lower vacuum pressures at said outlet, the spherical member furthest removed from said one spherical member being somewhat softer and resiliently deformable under high vacuum pressure at said outlet to reduce the pulsating air flow through said valve during such conditions of high vacuum pressure at said outlet, and the spherical member intermediate the other two spherical members being of a harder material to act as a piston between the other two spherical members to provide instant response therebetween and promote high frequency air pulsations through said valve.
A valve including a valve chamber having an inlet and an outlet, and three spherical members within said chamber intermediate said inlet and outlet, said spherical members being responsive to vacuum pressure at said outlet to produce a substantially constant pulsating air flow at said outlet, said inlet having a valve seat engageable by one of said spherical members, said one spherical member being made of a semi-hard material to provide better response to small vacuum pressure at said outlet.
A valve including a valve chamber having an inlet and an outlet, and three spherical members in stacked relation within said chamber intermediate said inlet and outlet, said spherical members being responsive to vacuum pressure at said outlet to produce a substantially constant pulsating air flow at said outlet, said inlet having a valve seat engageable by one of said spherical members, said valve seat being conically tapered, and said one spherical member being made of a semi-hard material to provide better response at lower vacuum pressures at said inlet, the spherical member furthest removed from said one spherical member being slightly softer and resiliently deformable under high vacuum pressure at said outlet to reduce the pulsating air flow through said valve during such conditions of high vacuum pressure at said outlet, and the spherical member intermediate the other two spherical members being of a harder material to act as a piston between the other two spherical members to provide instant response therebetween and promote high frequency air pulsations through said valve.
A valve including a valve chamber having an inlet and an outlet, and a plurality of spherical members within said chamber intermediate said inlet and outlet, said spherical members being responsive to vacuum pressure at said outlet to produce a substantially constant pulsating air flow at said outlet, said inlet having a valve seat engageable by one of said spherical members, and a fan attached to said valve adjacent said inlet to provide a positive pressure at said inlet.
Dependencies are inferred from the claim text.