Abstract: A fuel injector (10) is fabricated from powdered metal or sintered iron technology and is modified to respond to variations in fuel pressure to maintain the flow output from the injector constant for a given pulse width regardless of the pressure of the source of fuel. Modifications are directed to variable lift of the valve member (30) from the valve seat (48), variable pressure applied to the valve member (30) to hold the valve member on the valve seat (48) and an injector having the features of both variable lift and variable pressure.

Abstract: A distributor pump type fuel injection system for a diesel engine wherein the pump is driven by the engine and the control of the timing and metering of fuel being delivered to each cylinder of the engine is controlled by a single electromagnetic solenoid device. The control system includes a distribution head for distributing pulses of fuel to each cylinder, the control of the fuel to the cylinder, both metering and timing, being controlled by the above-mentioned single electromagnetic control device. The fuel system includes a metering chamber and a timing chamber, the two chambers being separated by a free piston. In the control system to be described, fuel is premetered into the metering chamber, the quantity of fuel therein being controlled by the duration of energization of the control valve during the metering portion of the cycle. The time of injection of the premetered fuel is similarly under the control of the control valve and is initiated upon energization of the control valve.

Abstract: A link (10) exchanges data between a master (MC) and slave (SC) computer. Each computer has control lines (26A, 42) and incompatible information lines (26B, 26C, CA1-15, CX1-21). The master computer (MC) includes a master interface (28) connected to the information and control lines (26) of the master computer (MC). The master interface (28) has separate intercommunication lines (LA/B) and intermediate (34) lines. This master interface (28) is able to provide an intermediate signal on its intermediate lines (34) in response to signals provided by the master computer (MC) on its control lines (26A). The link (10) includes a computing subsystem (30) and a slave interface (38). The computing subsystem (30) is connected to the intercommunication (LA/B) and intermediate (34) lines of the master interface (28). The computing subsystem (30) has command lines (36) for providing thereon a command signal in response to the intermediate signal.

Abstract: A fluid motor (10) having a housing (12) with first (14), second (16) and third (18) chambers therein. A first partition (22) separates the first chamber (14) from the second chamber (16). A second partition (24) separates the second chamber (16) from the third chamber (18). The third chamber (18) is connected to a source of fluid under pressure. A valve mechanism (91) controls the communication of the source of fluid between the second (16) and third (18) chambers. A poppet valve (42) allows the fluid to flow into the first chamber (14) from the second chamber (16). The first chamber (14) is connected to the third chamber (18) through a check valve (118). The valve mechanism (91) responds to an operator input signal by terminating fluid communication between the second (16) and third (18) chambers and initiating communicationof the second chamber (16) with the atmosphere to allow fluid to escape and create a pressure differential across the first (22) and second (24) partitions.

Abstract: A fuel/air ratio control apparatus for a reciprocating engine used in light aircraft including a fuel metering apparatus (32) and a fuel/air ratio controller (40). The controller (40) generates an electrical signal (Wf/Wa) indicative of a desired fuel/air ratio based upon the flight condition of the aircraft and the metering apparatus (32) meters fuel flow (Wf) according to the mass airflow ingested into the engine. The desired fuel/air ratio is a best power ratio (Wf/Wa (2)) for takeoff and climb conditions and a best economy ratio (Wf/Wa (3)) for cruise conditions as derived from the exhaust gas temperature. These ratios are limited by a ratio (Wf/Wa (1)) based upon the maximum cylinder head temperature tolerable for a particular flight condition.

Abstract: The invention is a method for welding together two parts with the help of ion implantation. The method comprises weakening the chemical and atomic bonds of the surface and near surface atoms of at least one of the surfaces to be welded together by ion implantation techniques. The ion implanted surface may then be cold or diffusion welded to the surface of the other part using conventional methods. The method is particularly applicable to welding together parts of dissimilar metals normally difficult to affect a satisfactory weld.

Abstract: A liquid spring accumulator includes a housing having inlet and outlet ports connected to a source of liquid under pressure. The housing contains a high pressure chamber and a cylindrical chamber containing a spring-loaded piston. A rod attached to the piston is movable therewith into the high pressure chamber. A passageway through the axis of the piston and rod provides communication between the inlet port and the high pressure chamber and includes a valve seat. A check valve member in the passageway includes a shaft holding the movable member off its seat during initial flow of hydraulic liquid into cylinder, permitting flow to fill the high pressure chamber. As the liquid pressure increases, the initial movement of the piston permits the check valve to close, and still further increases in pressure cause the piston to force the rod into the high pressure chamber, substantially increasing its hydraulic pressure.

Abstract: A fuel injection system for a diesel engine having injection and metering modes of operation for delivering fuel to an engine comprising a plurality of fuel injectors wherein each of said fuel injectors comprise a first port, a second port and a metering chamber for storing a premetered quantity of fuel, during the metering mode of operation, prior to the injection of said premetered quantity of fuel into the engine during the injection mode of operation.

Abstract: A fuel injection pump (100) including a plunger (2) and a piston (1) movably disposed in a pumping chamber (17), means for initiating (3, 5) fuel injection and means for terminating (13, 20, 29) fuel injection, the plunger periodically pressurizing fuel in a pressure chamber (44) and the piston (1) spaced from the plunger and allowing a metering chamber (16) to fill with a metered quantity of fuel to be injected to an engine. The means for initiating injection comprises a pilot valve (5) having a solenoid to selectively operate between either of two states and a control valve (3) movable between first and second positions in response to the state of pilot valve (5), the first position filling the metering chamber (16) with the metered quantity of fuel. The pilot valve (5) determines the fuel quantity to be delivered to the engine relative to a signal from an electronic controller. An accumulator (4) is pressurized during each cycle of the plunger (2) to provide pressurized fuel during a metering phase.

Abstract: The invention provides a pressure measurement system with a substantially constant settlement time. The invention includes a closed loop pressure measurement system having an input impedance configuration and a feedback impedance configuration where a signal from the feedback impedance configuration is used to null or balance a signal from the input impedance configuration. The error between the signals is integrated in a digital integrator to generate a measurement of the sensed parameter. The invention further comprises a means for varying the feedback loop gain of the system as a function of pressure in a manner to compensate for the gain change produced in the system in response to a pressure change.

Abstract: A coupling member (30) includes four equiangularly spaced fingers (42) at one end and two deflectable tabs (50) at the other end which cooperate to couple a pair of connectors (10, 20) of the type having medial of their ends a flange (18, 28) one flange (18) being provided with four openings (48) for receiving the fingers therethrough and the other flange being of a smaller diameter than the sleeve inside diameter for receiving the tabs thereover, the coupling member telescoping over the connectors and causing the tabs to deflect over their flange (28) and the fingers to be radially deflected and abut their flange (18).

Abstract: A disc brake assembly includes a caliper assembly and a torque member with matching recesses for receiving a pin assembly and the pin assembly includes as an assembled part thereof, a wire element carried by a resilient member to permit installation of the pin assembly into the recesses and yieldably prevent withdrawal thereof.

Abstract: A rotor for a disc brake assembly includes at least two members (40, 42) opposing a pair of friction elements (16, 18). The members are stamped to form projections (46) in abutment with each other to join the members together. The projections (46) also space the members from each other to form a clearance (58) and a connecting portion (44) cooperates with some of the projections (46) to prevent rotation between the connecting portion (44) and the two members (40, 42).

Abstract: The invention provides a circuit (100) that isolates the electrical signals or noise in an ignition system from a computer (60) which controls the timing of the ignition system. The circuit is characterized by an electro-optical coupling device (130) such as a photosensitive transistor (125) controlled by a light emitting diode (120) to provide a variable light output in response to a variable output signal from the computer analyzing the operation of the engine.

Abstract: A shielded electrical cable (5) is secured and grounded to a connector housing (60, 63) by placing a ferrule (50) around a portion of the cable (5), connecting the shields (10, 20) together and captivating the ferrule between two plates (71, 72) which are secured within the connecting housing (60, 63).

Abstract: Receptacle connector (10) secured by its flange (18) to panel (30) has a mating portion (14) extending forwardly from the panel for mating with mating portion (24) of plug connector (20) having a coupling member (40) rotatably mounted thereabout and adapted to draw the connectors together, an otherwise exposed region (50) about the mated connection being protected by a cup-shaped moisture seal (60) comprising a tubular body (62) sized to snugly fit about an exterior marginal annulus (41) of the coupling member and an annular flange (64) sized to fit about receptacle mating portion (14). Medial of annular flange (64) is a stiffening plate (70). An array of apertures of size sufficient to receive fasteners (68) pass through receptacle flange (18), annular flange (64), plate (70) and panel (30) annular flange (64) against flange (18) and panel (30) and moisture sealing thereabout.

Abstract: A three-piece socket contact characterized by a solid machined contact body (10), a tubular spring member (20) having at least one radially inwardly extending detent that engages a groove (11) in the contact body (10) to secure the spring member (20) to the contact body (10), and a protective sleeve (30) telescopically mounted over the tubular spring member (20).

Abstract: A single point fuel injection system for an internal combustion engine including a throttle body having first and second air intake throats corresponding to first and second intake manifold planes of the engine, the air flow through each throat being controlled by throttle plates positioned within each throat. The throttle body further includes a fuel accumulating bowl which is integrally formed with the throttle body, the bowl being enclosed by a diaphragm and cover member. Within the enclosure of the fuel bowl are positioned a pair of injectors which are adapted to inject pulsed portions of fuel through a sonic nozzle and into the air intake throat of the throttle body. The injection of pulses of fuel into the throat is timed in accordance with the sensing of the crankshaft reaching a position of 15.degree. before top dead center to enhance the distribution of fuel charge from cylinder to cylinder.

Abstract: This invention provides a circuit for automatically advancing the timing of an ignition system independent of engine speed. The invention is characterized by timing circuit (100) which initiates a timing change in reponse to a computer output signal (60) by operating a transistor (125) in its active region as a resistor.

Abstract: A variable displacement vane pump includes a rotor (10) rotatably mounted in a casing (32). The casing (32) has a pair of relatively rotatable complementary cams (18,20). Each cam (18,20) has a surface shaped to provide an annular curvilinear track. The pump also has a first (14) and second (16) plurality of vanes slidably mounted upon the rotor (10). Each of the vanes (14,16) is sized and positioned to engage a corresponding cam (18,20). These vanes (14,16) are constrained in a radial direction by the cams (18,20) as the rotor (10) rotates. The vanes of the first (14) plurality engage one (18) of the cams, the other one (20) of the cams being engaged by the vanes of the second plurality (16).