Abstract: A throttle body includes a secondary passageway having an inlet communicating with a central passageway upstream of a throttle plate disposed in the central passageway. An outlet communicates with an intake manifold of the engine downstream of the throttle plate to allow fluid flow to bypass the throttle plate. A pocket is formed in the throttle body and a seat is formed at the bottom of the pocket to communicate with the secondary passageway. A motor is disposed within the pocket and secured to the throttle body and cooperates with the seat for metering predetermined amounts of fluid flow past the seat. An opening is formed intersecting with the pocket and the outlet to form an internal flow path within the throttle body to allow fluid flow past the seat to flow through the outlet and bypass the throttle plate when in the closed position.

Abstract: This invention relates generally to fuel control systems for combustion engines such as gas turbines used in helicopters and the like, and more specifically relates to a fuel control transfer system which permits the substitution of one fuel control device for another which is supplying fuel to an operating combustion engine, without interruption of, or adverse effect on continued operation of the engine.

Abstract: A pressure regulating device regulates the pressure of a flowing medium and includes a stationary member. A movable armature is disposed axially from the stationary member for moving axially in relation to the stationary member. A coil is disposed about the stationary member and the armature and through which current flows for generating magnetic flux to create an attractive force to move the armature in relation to the stationary member. A housing is disposed about the coil and the stationary member and the armature for encasing the armature and the coil and the stationary member. At least one aperture is formed in the housing to allow a fluid medium to enter and exit the housing and to contact the armature. A flow valve is spaced axially from one end of the armature for moving independently of the armature to prevent parasitic forces from being transmitted by the flow valve to the armature.

Abstract: A rod seal for establishing a seal between an elongate rod and a housing wall around an enlarged opening in the wall through which the rod projects provides a close fitting sliding seal between the rod and the seal to accommodate longitudinal reciprocation of the rod relative to the seal and housing and also provides a sliding seal between the seal and housing wall to accommodate lateral movement of the rod relative to the housing. The sleeve is of a two piece construction which is assembled by a snap fit after the rod has been inserted into one element of the seal so that an enlarged end of the rod may be passed through an opening in the one seal element and the subsequent assembly of the second element achieves a close sliding fit with the unenlarged diameter section of the rod.

Abstract: A purge valve for a vehicle mounted fuel vapor recovery system is made up of a main housing and two end caps which snap fit together to seal and mount a computer controlled solenoid valve and a diaphragm controlled regulating valve. The housing is designed so that the required valve seats are integrally molded in the housing as are the various internal passages and chambers. A compression post formed on one end cap seats the solenoid assembly firmly against an abutment surface on the housing.

Abstract: A metering valve, simultaneously controlling a plurality of flow paths with a single poppet movable into and out of engagement with a valve seat in a duty cycle operation has the sealing surfaces of the poppet and seat formed with an accurately flat surface finish to minimize leakage when the valve is closed. The seat surface is formed with recessed areas to reduce the area of contact with the poppet surface to reduce pull-off force while maintaining adequate contact area to dissipate the closing impact forces which are further minimized by controlling the flow of fluid from between the opposed surfaces during valve closure.

Abstract: A throttle plate actuator and apparatus for controlling the pivotal position of a carburetor or throttle body throttle plate. The throttle plate actuator includes a rotor having a rotatable shaft mounted in a housing. First and second permanent magnets of opposite polarity directions are mounted on the rotatable shaft in spaced, facing relationship. A stator in the form of an electromagnet constructed of first and second pole pieces normally surrounds the facing portions of the first and second permanent magnets. At least one electrical conductor is wound in a plurality of turns to form a winding about each pole piece. When energized, the windings induced a magnetic field in the pole pieces which generate a predetermined magnetic torque proportional to the amount of current flowing through the windings to overcome the bias of the return spring attached to the throttle plate so as to rotate the rotor and attached throttle plate a predetermined angular amount.

Abstract: A solenoid actuated three-way valve is formed with a central passage communicating at one end with a vent passage via a first valve seat and communicating at its opposite end with a pressure supply port via a second valve seat. A control port directly communicates with the central passage at all times. An armature is slidable within the passsage to block one of the valve seats while opening the other and is resiliently biased toward one seat by a compression spring and magnetically biased toward the other seat by energization of the solenoid coil. Flux washers at opposite ends of the coil contact a ferromagnetic casing to provide an efficient flux path enabling rapid response of the armature to coil energization. One valve seat is loccated at one end of a pole piece threadably adjustable within one of the flux washers to establish a working gap in the magnetic circuit of a minimum width of the valve. A relatively large return gap is provided to minimize frictional losses within the valve.

Abstract: An onboard fuel vapor recovery system for a motor vehicle includes a fill neck assembly mounted at the inlet end of a dual passage fuel tank fill pipe in which fuel dispensed into the fuel tank during a refueling operation passes through an inner conduit while fuel vapor displaced from the tank by incoming fuel passes upwardly through a vapor passage between the inner conduit and an outer conduit loosely surrounding the inner conduit, the fill neck assembly including a vapor valve movable to an open position in response to unsealing of the inlet to the inner conduit in preparation for a refueling operation, opening of the vapor valve permitting fuel vapor displaced from the tank during the refueling operation to flow into a vapor receiving canister from which the vapor is subsequently withdrawn for combustion in the vehicle engine, the fill neck assembly also including a float valve for signalling the filling of the tank to capacity and a pressure relief valve in the fill neck assembly protecting the system i

Abstract: An adjustable air cleaner fastening assembly adapted for interconnecting predetermined centers of an air cleaner cover or housing and carburetor on an engine, the centers being eccentric. A base fastening portion engages the predetermined center of the carburetor on the engine. An air cleaner housing or cover fastening portion engages the base fastening portion and the predetermined center of the air cleaner cover for adjustably maintaining a predetermined distance between the predetermined center of the air cleaner cover and the predetermined center of the carburetor.

Abstract: The wiper or movable contact of an electrical potentiometer employs fingers of an oval-like transverse cross section to increase the useful service life of the potentiometer in application such as a throttle position sensor where the potentiometer may be subjected to mechanical vibration, repeated random shock loading, constant movement, etc.

Abstract: A manifold for distributing a fluid to a plurality of fluid ports, and a method for manufacturing the manifold. The manifold comprises a first tubular means forming a first tube, a second tubular means forming a second tube extending axially outwardly beyond said first tubular means, support means connected to one end of said first tubular means for supporting said second tubular means in spaced relationship to said first tubular means, and housing means molded about said first and second tubular means for forming an integral manifold.

Abstract: A solenoid actuated valve for regulating the fluid pressure at a control port by cyclically connecting the control port alternately to a fluid pressure supply source and to a sump includes a sleeve-like valve member slidably mounted on a fixed valve member for movement between two positions in response to energization or deenergization of the solenoid coil. The valve sleeve is the armature of the solenoid and operates within an internal chamber in the valve housing with pressure within the chamber balanced against its opposite ends. Energization and deenergization of the solenoid coil may be controlled by a processor which supplies a pulse width modulated electric control signal variable in response to processor inputs to establish a control port pressure which is accurately linearly related to the time duration of the pulse width modulated signal.

Abstract: A valve employed in applications where the valve is rapidly cyclically opened and closed over extended periods of time is constructed in a manner such that the impact between a rapidly moving metal valve head and metal valve seat at valve closure is minimized to reduce noise and wear. The valve head engaging element of the valve seat may take the form of a frusto conical belleville washer located with its concave side resting on a flat planar wall surface in the valve housing or a flat washer bridging a frusto conical wall surface in the housing. Fluid filling the recess between the opposed surfaces of the washer and housing wall is expressed from the recess as the frusto conical washer is axially compressed against the wall by the closing valve head to further cushion or damp the resiliently resisted compression of the washer.

Abstract: A control module for controlling the operation of multiple fluid pressure actuated devices and electrical devices, as in an automotive heating/cooling system, includes a one-piece sheet metal frame or bracket upon which a plurality of solenoid valves, circuit boards and a manifold are assembled in a compact, tightly, but easily assembled, package. The assembled package is of a generally rectangular box-shaped configuration with electrical and fluid flow connections located at one end to connect with electric and fluid connectors fixedly mounted on the vehicle to provide a simple plug-in-type installation of the module on the vehicle assembly line.

Abstract: An onboard refueling vapor recovery system for a motor vehicle prevents fuel vapor displaced from the vehicle fuel tank during a refueling operation from being discharged into the atmosphere and stores the fuel vapor for subsequent combustion in the vehicle engine. The system operates in parallel with a known vapor recovery system employed to minimize venting of vapor from the fuel tank through the normal fuel tank vent, this known system being inadequate to cope with the massive surge of vapor expelled during refueling which presently is vented to atmosphere through the fuel tank fill pipe. The refueling vapor recovery system includes a refueling vapor storage canister which is directly connected via a substantially unrestricted flow passage to the head space of the tank when, and only when, a standard fuel dispensing nozzle is operatively located in the fill pipe inlet. The nozzle is inserted through a seal which prevents the escape of vapor from the fill pipe.

Abstract: A fuel injection fuel supply system for a combustion engine has a fuel injector valve effective for metering and injecting metered fuel to the engine induction system; an electromagnetic assembly having a magnetic open loop is used for cyclically opening and closing the injector valve.

Abstract: The present invention is an idle bypass system including a throttle body having a longitudinal axis with a throttle plate disposed transversely to the longitudinal axis. The throttle body includes a secondary passageway having an inlet and an outlet to allow fluid flow to bypass the throttle plate when in a closed position. A motor is secured to the throttle body and cooperates with the secondary passageway for allowing a predetermined amount of fluid flow through the outlet. A solenoid-actuated valve is secured to the throttle body and cooperates with the secondary passageway for allowing a predetermined amount of fluid flow to the intake manifold when the amount of fluid flow past the motor is not within predetermined limits.

Abstract: The present invention is an idle fluid flow shutoff assembly including a throttle body having a longitudinal axis with a throttle plate disposed transversely to the longitudinal axis. The throttle body includes a secondary passageway having an inlet and an outlet to allow fluid flow to bypass the throttle plate when in a closed position. A motor is secured to the throttle body and cooperates with the secondary passageway for allowing a predetermined amount of fluid flow through the outlet. A pressure-actuated valve is moveable in response to the absence and presence of a predetermined pressure level and cooperates with the secondary passageway for allowing a predetermined amount of fluid flow to the intake manifold when the amount of fluid flow past the motor is not within predetermined limits.

Abstract: A solenoid actuated control valve includes a valve member located in either of a first or a second position within a fluid flow passage in response to the energization or deenergization of a solenoid. In one of its positions, the valve establishes a minimum restriction to flow and in its other position establishes a maximum restriction to flow. The valve member is designed so that the fluid pressures to which it is exposed are essentially balanced in its direction of movement so that the valve may be rapidly shifted with a minimum power requirement. By controlling the solenoid energization by a pulse width modulated control signal, the flow restriction may be time averaged to any restriction intermediate the minimum and maximum restrictions.