Abstract:
A tip-in fuel enrichment circuit is disclosed for the fuel delivery system of an internal combustion engine which senses a closed throttle position signal generated by a switch associated with the engine''s throttle in its closed position and generates a fuel enrichment signal providing a predetermined increase in the fuel delivery to the engine each time the closed throttle position signal is terminated.
Abstract:
A hydraulic brake booster is connected in series flow relationship in a vehicle hydraulic system between a source of fluid pressure and other hydraulic power equipment, such as a steering gear. The booster includes a housing with a bore in communication with an inlet connected to the source and an outlet connected to the steering gear. A piston having an end exposed to a boost chamber is shiftable in the bore from a first position to a second position by control valve means slidably carried in a central passage of the piston for controlling communication between the inlet and boost chamber. A hydraulic fluid system bypass valve separate from the control valve means, is located in the housing bore between the inlet and outlet for regulating inlet pressure and maintaining uninterrupted flow to the outlet upon shifting the piston.
Abstract:
Control apparatus for programmed control of a plurality of gas turbine engine compressor air bleed valves in response to a plurality of control input signals representing engine operating conditions including variable conditions related to engine power output. The control inputs are sensed and/or computed and scheduled to provide accurate and reliable control over a plurality of compressor air bleed valves by means including a hydraulic programmer with a three dimensional compressor rise scheduling can and adjustable hydraulic timers.
Abstract:
Disclosed is an auxiliary start control for a fuel injection equipped internal combustion engine system which reorders the fuel injection sequence during the engine''s starting cycle to facilitate a cold start. The system redirects the injection signals to alternate fuel injection valves so that during the start attempt fuel is injected directly into open intake valve ports. The system is effective in facilitating the start of both hot and cold engines.
Abstract:
A servomotor having a movable wall responsive to a pressure differential sequentially developed between vacuum and air at atmospheric pressure and vacuum and air above atmospheric pressure for supplying a brake actuator with an input force to operate a braking system. A series of poppet valves responsive to the movement of a plunger will control the sequential development of the pressure differential. A relief valve located in the wall will place an upper limit on the development of the pressure differential to assure that the input force that is created will not harm the braking system.
Abstract:
In a time frequency collision avoidance system wherein time is divided into epochs and each epoch is further divided into a predetermined number of time slots, the time of arrival of a range signal after a predetermined time in a time slot is a measure of the range between a local station and a remote station operating in the time slot. The range is measured by strobing a counter, which is set to zero at the beginning of each time slot, by a stable frequency source. Range rate is calculated by memorizing the counter contents and by comparing the memorized contents against counter contents resulting from a range signal received from the same remote station.
Abstract:
A tow vehicle-trailer braking system wherein a first brake applying servomotor in the trailer is operated synchronously with a second brake applying servomotor in the tow vehicle through a control signal generated by sensing the operator input force applied to the brake pedal in the tow vehicle. The control signal, as derived from the sensed input force, can be modified to take into consideration change in weight in the trailer to provide optimum braking between the tow vehicle-trailer combination on any road surface.
Abstract:
In a pumping system of the type for pumping contaminated fluids and including a centrifugal boost pump stage, contaminant chopping means arranged with the boost pump for reducing contaminant size prior to the fluid reaching the next pumping stage.
Abstract:
A fluid pressure actuated piston is slidably carried in a fluid pressure actuated cylinder which, in turn, is slidably carried in a fixed carrier and engageable with a fixed stop to extend the range of axial movement of the piston. The fluid pressure actuated cylinder is pressurized to a retracted position until a normally closed valve member is actuated to an open position by the piston at the end of a first permissible stroke thereof in said cylinder whereupon the cylinder is pressurized into engagement with said fixed stop in the direction of movement of said piston to thereby extend the permissible stroke of the piston accordingly.
Abstract:
A metering valve apparatus for transferring a servomotor force from a first piston to a second piston in response to an input force to produce an operational braking force. The first and second pistons are initially simultaneously moved by a differential pressure responsive movable wall to pressurize fluid in interconnected first and second chambers in response to the input force. A predetermined input force will independently move the second piston with respect to the first piston to interrupt the communication between the first chamber and the second chamber and allow pressurized fluid to escape into a third chamber. As the pressurized fluid escapes into the third chamber the wall will move to supply the second piston with the servomotor force to further pressurize the fluid in the second chamber.