Abstract: A fuel supply unit 10 includes a fuel reservoir 22 for holding fuel, a fuel pump 18 within the reservoir for pumping fuel from the reservoir, a jet pump assembly 16 within the reservoir for drawing fuel from a fuel tank into the reservoir, and a gasket 24 operatively coupled with a portion of the jet pump assembly and disposed between the portion of the jet pump assembly and an interior surface of the reservoir so as to decouple the jet pump assembly from the reservoir.

Abstract: A fuel delivery device having a collecting receptacle disposed inside a storage tank and from which a delivery unit aspirates fuel and delivers it to an engine. A jet pump which delivers the fuel from the storage tank into the collecting receptacle is disposed close to a bottom of the collecting receptacle and feeds fuel into it through an ascending line that extends up into the vicinity of the upper rim of the collecting receptacle. A separate component is disposed on the outside of a peripheral wall of the collecting receptacle. The outside of the peripheral wall and/or the side of the component oriented toward the peripheral wall has an open channel. The component is tightly connected to the peripheral wall to cover the open channel and to form the ascending line. The collecting receptacle and the component can be easily produced along with the open channel and the component can be attached to the collecting receptacle with a minimum of effort.

Abstract: In a fuel tank for a motor vehicle, an intermediate tank is arranged for the intermediate storage of fuel fed via a plurality of suction jet pumps. The intermediate tank distributes the fuel to a plurality of baffles having feed units. One of the feed units is thereby prevented from running dry in the event of transverse accelerations of the fuel tank.

Abstract: In a fuel supply system constituted such that there is disposed a saddle type fuel tank provided with a main chamber and an auxiliary chamber on both sides of an upwardly protruding center portion of a bottom face thereof, a fuel transfer tube which is mounted to lie over the protruding portion of the fuel tank, is connected to a fuel introduction port of a jet pump disposed on a main chamber side, to pump fuel in the auxiliary chamber via the fuel transfer tube, at least a part of the fuel transfer tube is formed by arranging alternately a plurality of bellows portions each of which cross section is changed, and a plurality of straight portions each of which cross section is fixed.

Abstract: A grounded jet pump assembly for a fuel system of a vehicle includes a fuel reservoir and a grounded fuel component disposed in the fuel reservoir. The grounded jet pump assembly also includes a jet pump having an outlet extending into the fuel reservoir and a grounding member at the outlet of the jet pump for contacting flow of fuel from the jet pump and contacting the grounded fuel component to complete an electrical circuit for grounding the jet pump.

Abstract: The present invention provides a fuel delivery system for a saddle fuel tank wherein a fuel pump and a jet pump are positioned within an active side of the tank. The jet pump is directly driven by the fuel pump to draw the fuel from a passive side of the tank to the active side of the tank.

Abstract: In order to provide a simply-structured fuel filter which permits soaking at least part of a filter unit all the time in fuel in a reservoir, a reservoir unit is configured of a resin-built cylindrical reservoir having a bottom arranged on the bottom of a fuel tank, a primary filter installed near the inner bottom of that reservoir and a fuel pump sucking fuel in the reservoir through the primary filter, wherein projections protruding upward from the inner bottom of the reservoir are integrally molded and engaging holes to engage with those projections are bored in the circumference of the primary filter.

Abstract: The lifetime of a double-cone device (21) for creating a pressure difference in a streaming fluid can be greatly increased by moving the inlet gap (5) into the exit cone (4). This results in a short so-called diffuser (22) being obtained between the gap (5) and the orifice (19), where entry cone (3) and exit cone (4) are connected. The increased lifetime permits the double-cone device to cope with much higher flow rates. Thus higher system pressures are created which enhance the use of the double-cone for such applications as the desalination of sea water by reverse osmosis. The important application of the seperation of oil from water using a separating device such as a cyclone (57) working under elevated pressure is now feasible. The increased power of the double-cone permits one to profit more fully from the new concept of reduction of the concentration of the feed supplied to the double-cone device (21).

Abstract: A grounded jet pump assembly for a fuel system of a vehicle includes a fuel reservoir and a grounded fuel component disposed in the fuel reservoir. The grounded jet pump assembly also includes a jet pump having an outlet extending into the fuel reservoir and a grounding member at the outlet of the jet pump for contacting flow of fuel from the jet pump and contacting the grounded fuel component to complete an electrical circuit for grounding the jet pump.

Abstract: In a fuel supply device disposed in a fuel tank, a pump module is constructed with at least a fuel pump, a fuel filter and a pressure regulator, and is installed in a sub-tank. A filter case of the fuel filter has first ribs and second ribs, so that an axially position between the pump module and the sub-tank is set by the first ribs, and a circumferential position therebetween is set by the second ribs. Further, a fuel inlet of a jet pump is formed in an inner bottom surface of the sub-tank, and an inner surface of the fuel inlet of the jet pump is tapered. Therefore, a fuel outlet of the pressure regulator is guided while being connected to the fuel inlet of the jet pump. Accordingly, the fuel supply device can be assembled easily.

Abstract: A dispenser for dispensing at two flow rates eductively draws a chemical fluid such as a concentrated cleaning solution for diluting with a motive fluid such as water. Using eduction rather than gravity feed provides a consistent dilution ratio over a range of pressures of the motive fluid. A chemical reservoir contains the chemical fluid and a bottle insert assembly for interfacing to the dispenser. The bottle insert assembly seals an opening to the reservoir when the reservoir is not inserted in the dispenser, preventing leaks. Also, the bottle insert assembly includes dual pickup tubes, each with a purge accumulator, to allow dual rate flow at the same or different dilution ratios as well as drawing back unused chemical fluids from the dispenser to avoid carryover or contamination.

Abstract: A fuel tank for a motor vehicle defining at least two interconnecting with the intercommunication being by way of a tank region of smaller cross-section than the chambers, defining a saddle tank configuration. A first of the chambers contains a fuel delivery unit and a second of the chambers has a refuelling vent valve which is the only refuelling vent valve of the tank. The two chambers also communicate with each other by way of a compensating line on the basis of the principle of communicating vessels. The tank also has means for venting the compensating line. The compensating line is such that equalisation of the filling levels of the intercommunicating chambers is possible only when there is a drop in level from the second chamber to the first chamber.

Abstract: A fuel tank for a motor vehicle is described and has a collector tank disposed in its interior for extracting air from it. The collector tank is connected to a pressure-equalizing device that is disposed outside the fuel tank and has an activated carbon filter. Fuel penetrating into the collector tank is extracted by suction by a pump configured as a suction jet pump. As a result, the fuel tank has particularly low levels of fuel emission.

Abstract: The device has a collecting receptacle (14), which is disposed inside the storage tank (10) and from which a delivery unit (20) aspirates fuel and delivers it to the engine (12). A jet pump (22) is provided, which delivers the fuel from the storage tank (10) into the collecting receptacle (14). The jet pump (22) is disposed close to a bottom (16) of the collecting receptacle (14) and feeds fuel into it through an ascending line (32) that extends up into the vicinity of the upper rim of the collecting receptacle (14). A separate component (30) is disposed on the outside of a peripheral wall (18) of the collecting receptacle (14). The outside of the peripheral wall (18) and/or the side of the component (30) oriented toward the peripheral wall (18) has an open channel (24; 34). The component (30) is tightly connected to the peripheral wall (18) to cover the open channel (24; 34) and to form the ascending line (32).

Abstract: A fuel tank, in particular for a motor vehicle having a tank venting system, comprises a sucking jet pump which feeds fuel into a sucking-jet-pump feedline which fills a storage pot arranged in the tank. The sucking jet pump has a driving nozzle. A line leads from the region of the tank roof into a negative pressure region of the sucking jet pump.

Abstract: A fuel supplying apparatus for use with a main fuel tank and an engine includes a fuel discharge pipe for supplying fuel to the engine, a sub-tank disposed in the main fuel tank, a fuel pump for pressurizing fuel and a jet pump. The jet pump includes a throat and a nozzle projecting into the throat from the bottom wall of the sub-tank. The throat has a fuel inlet opening disposed outside the sub-tank and a fuel discharge opening disposed in the sub-tank. When pressured fuel is injected into the inlet opening of the throat, the fuel in the main tank is sucked to the sub-tank.

Abstract: In a fuel tank for a motor vehicle, an intermediate tank is arranged for the intermediate storage of fuel fed via a plurality of suction jet pumps. The intermediate tank distributes the fuel to a plurality of baffles having feed units. One of the feed units is thereby prevented from running dry in the event of transverse accelerations of the fuel tank.

Abstract: A dual barrel jet fuel pump assembly for a fuel tank in a vehicle includes a reservoir adapted to be disposed in a primary side of the fuel tank and having a top defining an overflow fuel level of the reservoir. The dual barrel jet fuel pump assembly also includes a first conduit conducting return fuel from an engine of the vehicle to the reservoir and a second conduit extending to an auxiliary side of the fuel tank. The dual barrel jet fuel pump assembly further includes a dual barrel jet pump disposed in the reservoir and having a first inlet operatively connected to the first conduit and a second inlet operatively connected to said second conduit to fill the reservoir with fuel from the primary side and auxiliary side of the fuel tank.

Abstract: In a fuel feed unit (3) for a motor vehicle, a suction jet pump (6) provided for filling a baffle (2) of a fuel tank (1) is manufactured in one piece with a holding part (4) for a fuel pump (5). The holding part (4) is of pot-shaped design for receiving the fuel pump (5) and carries a fuel filter (7) on a vertical wall (8). Fuel thereby passes to the suction jet pump (6) immediately after the fuel pump (5) has been started up.

Abstract: The invention relates to an arrangement in a vacuum sewer system, which comprises a sewer network having a sewage source and sewer piping adapted for receiving sewage from the sewage source. A liquid driven ejector device functions as a source of vacuum for the vacuum sewer system. In order to improve the efficiency of and to ensure the function of the ejector device, the ejector device forms a primary circuit, which is separated from a secondary circuit formed by the sewage collecting process.

Abstract: A fuel feeding module for a motor vehicle has a fuel supply tank, a storage container arranged in the fuel supply tank, a feeding aggregate arranged in the storage container and feeding fuel from the storage container to an internal combustion engine of the motor vehicle, the feeding aggregate having a driving part and a pump part which is formed as a flow pump and has a rotatably driven impeller cooperating with at least one flow passage for feeding the fuel, a jet pump which is connected with the flow passage of the pump part of the feeding aggregate and through which the fuel is fed from the fuel supply tank into the storage container, the jet pump being arranged laterally near the feeding aggregate and connected with the flow passage of the pump part by a passage which extends along the bottom of the storage container.

Abstract: A fuel supply device is provided for use with a fuel tank. The device comprises a mounting bracket suspended into the fuel tank. A fuel pump is mounted to the mounting bracket to pump fuel from the fuel tank to the outside of the fuel tank. A pressure regulator is mounted to the mounting bracket to regulate the pressure of the fuel led to the outside of the fuel tank from the fuel pump. A fuel return passage is defined by the mounting bracket, through which a part of the fuel pumped out from the fuel pump is led back into the fuel tank under operation of the pressure regulator. First and second suction pumps are mounted to the mounting bracket and sucks fuel from first and second given portions of the fuel tank by using a power possessed by the fuel flowing in the fuel return passage. First and second passages extend from the fuel return passage to the first and second suction pumps respectively to apply the fuel from the fuel return passage to the pumps to drive the same independently.

Abstract: The present invention is a pressure feedback circuit for use with a vacuum pressure control circuit. The pressure feedback circuit detects the occurrence of, and controls the generation of vacuum pressure under, External Override Conditions (“EOCs”). During EOCs, which typically include emergency stop conditions or loss of electrical power to the vacuum pressure circuit, the pressure feedback circuit senses the condition of the output vacuum pressure port and supplies feedback to the vacuum pressure control circuit thereby maintaining the last output state of the vacuum pressure control circuit.

Abstract: A vacuum air exhaust system (8) employs a venturi vacuum pump (10) that is fed pressurized air through a control valve unit (18) rigidly mounted on a vacuum pump housing (24) of the vacuum air exhaust system. By manipulating a movable valve of the control valve unit, an operator can control a vacuum applied by the vacuum pump. The vacuum air exhaust system is rigidly attached to a pipe-type mount unit (16) for being rigidly attached to a wall at a hole in the wall so that ventilation suction is applied through the pipe and the wall. In one embodiment the exhaust adapter is attached to a flexible hose (41) and in another embodiment it is rigidly screwed to a pipe (42), such as a filter pipe.

Abstract: The assembly comprises a module supported in the reservoir by side plate, with outlet to fuel tank, return inlet and electrical power socket. The module housing, with end cap, forms an intermediate reservoir for the liquid, which is collected there by the venturi pump activated by flow in the return line from the main tank when pressure in the outlet is exceeded. The main pump is horizontally mounted and preferably electrically-driven. The pump is secured in the holder with side engaging clips.

Abstract: A dual barrel jet fuel pump assembly for a fuel tank in a vehicle includes a reservoir adapted to be disposed in a primary side of the fuel tank and having a top defining an overflow fuel level of the reservoir. The dual barrel jet fuel pump assembly also includes a first conduit conducting return fuel from an engine of the vehicle to the reservoir and a second conduit extending to an auxiliary side of the fuel tank. The dual barrel jet fuel pump assembly further includes a dual barrel jet pump disposed in the reservoir and having a first inlet operatively connected to the first conduit and a second inlet operatively connected to said second conduit to fill the reservoir with fuel from the primary side and auxiliary side of the fuel tank.

Abstract: The fuel supplying apparatus includes a reservoir to be inserted from an opening portion provided in an upper portion of a fuel tank, a tank cover for closing the opening portion of the fuel tank, and a coupling mechanism for coupling the reservoir and the fuel tank with each other so as to be mutually displaceable. The coupling mechanism includes a pivot for rotatably supporting the reservoir and a supporting member for supporting the pivot so that the pivot can be movable in an upper and lower direction of the fuel tank relative to the tank cover.

Abstract: A vacuum control apparatus for generating and controlling the source of vacuum produced from a source of pressurized air in communication with at least one vacuum responsive device wherein the vacuum control apparatus maintains the operating conditions of the system during the loss and resumption of power. The vacuum control apparatus provides at least one venturi for creating a vacuum through a flow of pressurized air. A first valve train selectively provides a flow of pressurized air from a pressurized air source to the vacuum creating means. A second valve train communicates with the pressurized air source to selectively provide a flow of pressurized air to the vacuum responsive device. A last function valve communicates with the first and second valve trains and a pressurized air source to maintain the operating condition of the vacuum control apparatus during the loss and resumption of power to the first and second valve trains.

Abstract: A method for generating and controlling the source of vacuum produced from a source of pressurized air in communication with at least one vacuum responsive device wherein the present invention maintains the operating conditions of the system during the loss and resumption of power. The present invention provides at least one venturi for creating a vacuum through a flow of pressurized air. The present invention selectively provides a flow of pressurized air from a pressurized air source to the vacuum creating means and selectively provides a flow of pressurized air to the vacuum responsive device. A last function valve communicates with the selective providing of pressurized air to maintain the operating condition of the vacuum responsive device during the loss and resumption of power.

Abstract: A system, method and computer program product system for evacuating coolant from a liquid-cooled device. The system includes a coolant supply path adapted to be coupled between a coolant supply pump and the liquid-cooled device; a coolant return path adapted to be coupled between a coolant supply reservoir and the liquid-cooled device; and a coolant removal path coupled between the coolant supply path and the coolant return path. The coolant removal path is configured to evacuate coolant from the liquid-cooled device using a venturi effect from the coolant supply path to evacuate the coolant through the coolant return path into the reservoir.

Abstract: A fuel system including first and second tank portions, first and second fuel pumps in the first and second tank portions, respectively, a first crossover fuel line for transferring fuel from the second tank portion to the first tank portion, and a second crossover fuel line for transferring fuel from the first tank portion to the second tank portion. In one aspect of the invention the first and second tank portions define a bifurcated tank and the first and second crossover fuel lines are housed completely within the bifurcated tank. In another aspect of the invention, the first and second crossover fuel lines extend partially outside the bifurcated tank.

Abstract: An automotive vehicle fluid jet pump 7 is provided including a first chamber 340 having a rear end 348 sealed from a front end 344 by a pressure communicative boundary 352. The first chamber front end 344 has an inlet 332 fluidly connected with a source of pressurized fluid. The first chamber front end 344 also has a nozzled outlet 372. A second chamber 376 is provided having a first inlet fluidly connected with the first chamber outlet 372. The second chamber 376 has a second inlet 380 fluidly connected with a sump. The second chamber has a delivery outlet 334. A valve member 400 is operatively associated with the first chamber boundary 352 for controlling a flow from the first chamber inlet 332 through said first chamber outlet 372. A position of the valve member 400 with respect to said first chamber outlet 372 is responsive to a pressure differential between the first chamber front end 344 and rear end 348.

Abstract: The invention concerns a fuel drawing device for a motor vehicle tank comprising a housing (100) bearing a drawing pump (190) and a filter (180) arranged on the pump (190) outlet conduit, characterized in that the filter is ring-shaped and is arranged in a chamber radially external to the housing (100) and the pump (190) is arranged in the filter (180) central space.

Abstract: The fuel supplying apparatus includes a reservoir to be inserted from an opening portion provided in an upper portion of a fuel tank, a tank cover for closing the opening portion of the fuel tank, and a coupling mechanism for coupling the reservoir and the fuel tank with each other so as to be mutually displaceable. The coupling mechanism includes a pivot for rotatably supporting the reservoir and a supporting member for supporting the pivot so that the pivot can be movable in an upper and lower direction of the fuel tank relative to the tank cover.

Abstract: A fuel tank (1) has an ejector pump (9) arranged inside it. This ejector pump (9) is preloaded against an inner wall (10) of the fuel tank (1) by means of a flexurally elastic supporting arm (8) and is thus fixed. This allows the ejector pump (9) to be inserted into the interior of the fuel tank (1) without problems through an opening (3) together with a fuel feed unit (4). This considerably simplifies the fitting of the ejector pump (9) and, in particular, there is no need for another fitting opening in the fuel tank (1) to enable the ejector pump (9) to be fixed.

Abstract: A fuel supplying apparatus includes a reservoir to be inserted from an opening portion provided in an upper portion of a fuel tank, a tank cover for closing the opening portion of the fuel tank, and a coupling mechanism for coupling the reservoir and the fuel tank with each other so as to be mutually displaceable. The coupling mechanism includes a retainer member rotatably connected to the reservoir through a predetermined pivot, and at least one coupling member for coupling the retainer member and the tank cover with each other so that the pivot can be moved in a vertical direction of the fuel tank relative to the tank cover.

Abstract: A reservoir for feeding module has a tubular cylinder part, and a bottom part joined to the tubular cylinder part, the tubular cylinder part and the bottom part having joining surfaces on which functional surfaces and feeding passages are formed.

Abstract: A fuel system including first and second tank portions communicating with each other such that the first and second tank portions have a substantially equal vapor pressure, first and second fuel pumps in the first and second tank portions, respectively, and a crossover fuel line for transferring fuel in either direction between the first and second tank portions, the direction of transfer depending on the relative level of fuel in the first and second tank portions. Respective first and second shuttle valves control the direction of fuel flow through the single crossover line to maintain substantially equal fuel levels in both bifurcated portions until the tank is empty. First and second jet pumps communicate with the crossover fuel line and provide the suction needed for fuel transfer.

Abstract: The device for conveying fuel from a fuel tank (10) to an engine (18) of a motor vehicle has a conveying unit (14), communicating on the intake side with the fuel tank (10) and, on the pressurized side, with the engine (18), and a return line (22), which leads to a jet pump (24), located near a tank bottom (11), that pumps excess fuel via a mixing region into a reserve pot (12), from which the conveying unit (14) draws fuel. According to the invention a siphon-like mixing region (29) is provided between the reserve pot (12) and the tank bottom (11). An opening (32) or a filter element (48) is provided in a transitional region (31) of the mixing region (29) to the reserve pot (12). The opening (32) or filter element (48) which extends parallel to the tank bottom is closable by an axially movable closing element (44,51) so that a fuel flow can occur into the reserve pot (12) but not back from the reserve pot (12) into the mixing region (29).

Abstract: A pump for both filling and emptying containers with liquids, flowable solids, etc. has a body which is screwed into a bung hole in the top wall of the container. According to the state of evacuation or pressurization produced in the container by the pump, “liquid” will enter or leave the container via pipe passing through the body of the pump. The motive power for the pump is a compressed air source which provides air to a venturi positioned in a passage connecting the interior of the container with the exterior via vented chamber. Air flowing through air ports in the venturi generates a vortex which creates air flow through passage. By turning handle, the venturi may be rotated so as to reverse its orientation and thus reverse the direction of air flow to either pressurize or evacuate the container. Alternatively, a pair of oppositely-directed venturis selectively connectable to air passage may be used to perform the emptying and filling functions.

Abstract: A secondary fuel pump assembly for a fuel tank in a vehicle includes a reservoir adapted to be disposed in the fuel tank having a top defining an overflow fuel level of the reservoir. The secondary fuel pump assembly also includes a conduit conducting return fuel from an engine of the vehicle to the reservoir and a jet pump having a discharge outlet in the reservoir and an inlet operatively connected to the conduit. The secondary fuel pump assembly includes an overflow fuel member defining a flow path for overflow of fuel in the reservoir and a guide member extending into the overflow fuel member and having at least one aperture extending therethough. The secondary fuel pump assembly further includes a guide disposed over the guide member and movable relative thereto to open and close the at least one aperture and a float connected to the guide to move the guide as a fuel level rises and falls in the reservoir.

Abstract: A fuel supplying apparatus includes a reservoir to be inserted from an opening portion provided in an upper portion of a fuel tank, a tank cover for closing the opening portion of the fuel tank, and a coupling mechanism for coupling the reservoir and the fuel tank with each other so as to be mutually displaceable. The coupling mechanism comprises a retainer member rotatably connected to the reservoir through a predetermined pivot, and at least one coupling member for coupling the retainer member and the tank cover with each other so that the pivot can be moved in a vertical direction of the fuel tank relative to the tank cover.

Abstract: One embodiment of the invention encompasses a fluid vacuum system for vacuuming-up discharge fluid from a fluid source without applying a vacuum to the fluid source. The system comprises a discharge conduit, a vacuum source, and a vacuum-breaker. The discharge conduit is in fluid communication with the fluid source. And, the vacuum-breaker connects the discharge conduit to the vacuum source such that the vacuum source applies a vacuum to the discharge fluid without applying a vacuum to the fluid source. Select embodiments are optimized for use with dialysis machines in dialysis clinics. A closed system, preferably a vacuum system, is provided for disposal of noxious odors and fluids.