Abstract: A micro-pulsation fuel injection system with underpressure stabilizer, comprising a fuel supply system, a fuel tank, a micropump, and a compression pump. The micropump ejects fuel into an intake pipe. The compression pump is connected with a fuel supply pipe of the micropump, for keeping underpressure of the inlet of the micropump against the intake pipe stable. Incoming fuel passes through a fuel chamber, separated by a membrane from a pressure chamber, which in turn is connected to the intake pipe. The membrane deforms according to pressure in the intake pipe, changing volume of the fuel chamber and generating underpressure of fuel therein. Additionally, a regulating valve is installable between the compression pump and the micropump for stabilizing the difference of pressures at the inlet of the micropump and in the intake pipe. Thus the quantity of fuel ejected by the micropump is precisely controlled.

Abstract: A fuel supply apparatus capable of reducing the abrasion of a driving cam and a tappet without increasing the dimensions and weight of the apparatus. This fuel supply apparatus is provided with a tappet which has a pressure receiving surface contacting the driving cam of an engine. The tappet is provided at the part of a outer surface thereof which is in the vicinity of an outer circumference of the pressure receiving surface with a groove adapted to prevent the local concentration of stress on the tappet and having a V-shaped, semicircular or U-shaped cross section.

Abstract: An electronic returnless fuel system for a vehicle includes a fuel pump to pump fuel from a fuel tank. The electronic returnless fuel system also includes a fuel rail fluidly connected to the fuel pump to distribute the fuel to an engine of the vehicle and a pressure transducer to sense pressure of the fuel from the fuel pump to the fuel rail. The electronic returnless fuel system includes a controller electrically connected to the pressure transducer and the fuel pump to control the pressure of the fuel from the fuel pump to the fuel rail at a set operating pressure. The electronic returnless fuel system further includes a pressure relief valve interconnecting the fuel pump and the fuel rail set a predetermined amount above the set operating pressure and at least one jet pump disposed in the fuel tank and fluidly connected to the pressure relief valve.

Abstract: A pressure-regulating apparatus for supply of fuel from a fuel pump in a fuel tank via a fuel line to a distributor of an internal combustion engine, a pressure-regulating valve being arranged in the fuel tank, to return fuel from the fuel line, when the valve is opened, to the fuel tank. The pressure-regulating valve has first and second chambers separated in a liquid-tight manner by a membrane which actuates a valve-closing member. The first chamber has at least one inlet connected to the fuel line by a first branch line and at least one outlet which leads into the fuel tank. The second chamber contains a spring which biasses the valve-closing member to a closed position. The second chamber of the pressure-regulating valve has a second inlet connected to the fuel line via a second branch line, and a switch device in is provided the second branch line to establish different pressure levels in the second chamber.

Abstract: A fuel control device 220 includes a restriction 294 and a check valve 292 disposed between a fuel return conduit 236 and a fuel injection supply conduit 227. In operation, fuel from tank 202 flows into the control device via conduit 208 is filtered through filter 222 flowing to an injection pump 230 outlet conduit 228. Excess fuel is returned to the control device and is then directed either back to the tank 202 via conduit 234 or is mixed with incoming fuel via conduit 235 and a two-position temperature responsive diverter valve 290. The restriction and check valve provide the benefit of allowing a continuous air bleed to purge any incoming air or vapor from the fuel supply system back to the fuel tank 202, while preventing unfiltered fuel flow from the fuel return outlet port to the filtered fuel outlet port.

Abstract: A fuel supply apparatus includes a main tank and a fuel supply module. The fuel supply module includes a sub tank disposed inside the main tank, a supporting bracket attached to an inside of the sub tank to thereby support a fuel supply pump therein, and a jet pump which includes a jet pump nozzle and sucks a fuel inside the main tank into the sub tank from a bottom thereof by utilizing a generated negative pressure. The supporting bracket includes a jet pump passage, which is connected to the jet pump nozzle in case the sub tank is attached to the supporting bracket. The fuel in the sub tank is supplied to an engine by driving the fuel supply pump, and a part of the fuel is supplied to the jet pump through the jet pump passage to thereby generate the negative pressure therein.

Abstract: A dual fuel tank (10) including first fuel tank (12) and a second fuel tank (14). A single fuel hose (16) allows fuel to enter the first fuel tank (12) from an outside source. When the fuel level in the first fuel tank (12) reaches an overflow level (17), fuel passes through a transfer tube (18) from the first fuel tank (12) into the second fuel tank (14). A transfer fuel pump (20) communicates fuel from the second fuel tank (14) to the first fuel tank (16) such that the level of fuel in the first tank (12) is maximized relative to the available fuel in the system. A main fuel pump (22) communicates fuel from the first fuel pump (12) to a remote target (24). In this way the fuel is available from a single location within the dual fuel tank (10) at a wider range of angles of vehicle travel.

Abstract: A device for an arrangement inside a fuel tank, provided with pumps and filters for supplying and filtering fuel that is fed to an internal combustion engine, whereby the fuel is conveyed from the bottom area of the tank through a first filter into a collector chamber and fuel is conveyed from said collector chamber by means of a second pump through a second filter to the internal combustion chamber. Both pumps are arranged in a pump unit. The collector chamber is arranged vertically above the pump unit and the filter with respect to the fitting position of the device and is embodied as an open overflow container, whereby the inventive device can be produced in a rational manner and offers good functionality.

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 present invention relates to a fuel-drawing assembly for a motor vehicle tank, the assembly comprising a main pump (110) associated with a pressure regulator (170) and a reserve bowl (150) fed by a jet pump (160) and from which the main pump (110) draws fuel, the assembly being characterized by the fact that the jet pump (160) is integrated in the outlet from the pressure regulator (170), and that the jet pump and regulator (160 and 170) subassembly formed in this way is secured to a module (100) comprising the main pump (110) and the reserve bowl (150), a portion of the housing (171) for the pressure regulator (170) being integrated in the wall constituting the reserve bowl (150).

Abstract: A fuel supply apparatus maintains a level of fuel within a sub tank and, even if the fuel within the sub tank becomes low in volume, maintaining fuel coverage on a fuel filter is possible. A cylindrical member is formed integrally with the cover and has, at its inner bottom surface, opposite a jet pump, a fuel receiving portion for receiving fuel introduced from an introducing pipe. Above the fuel receiving portion is formed a slit-shaped opening portion which opens toward the fuel filter. The fuel fed from the jet pump passes through the introducing pipe, along the inner bottom surface, and then strikes the fuel receiving portion. The fuel then crosses over a partition wall through the opening portion located above the fuel receiving portion, and changes its direction to flow laterally to reach the top of the suction filter.

Abstract: A fuel transfer apparatus for providing fuel to a vehicle engine from a plurality of fuel tanks. A transfer pump is positioned intermediate a pair of fuel tanks and is operable to transfer fuel therebetween. Fuel is provided to the engine from a first one of the two fuel tanks. Excess fuel is returned to the first one of the two fuel tanks. When the level in the first fuel tank is less than the level in the second fuel tank by a predetermined amount, the transfer pump transfers an amount of fuel from the second fuel tank to the first fuel tank. Fuel level sensors are utilized to monitor the level of fuel in the two fuel tanks and report to a microprocessor which controls the transfer pump. The microprocessor utilized to control the transfer pump may be incorporated into the transfer pump, may be a stand alone microprocessor, or may comprise an existing vehicle circuit board such as, e.g., the electronic control module (ECM).

Abstract: A pressure regulator for use in regulating the outlet pressure of a pump for use in an engine comprises a piston member which is moveable with respect to an outlet opening under the influence of fluid pressure acting on the piston member to control the degree by which the outlet opening is obscured. The pressure regulator comprises a biasing arrangement for applying a biasing force to the piston member which opposes the pressure of fluid acting on the piston member. The biasing arrangement comprises a moveable abutment member which is cooperable with a stop member so as to vary the rate at which the displacement of the piston member varies with fluid pressure acting on the piston member. The stop member is pre-set in a fixed position relative to the regulator housing such that movement of the abutment member is terminated when the abutment member is urged into engagement with the stop member. The invention also relates to a transfer pump comprising a pressure regulator.

Abstract: A fuel pressure regulator for supplying fuel to the intake of an internal combustion engine at a substantially constant pressure. The fuel pressure regulator includes a housing defining a fuel chamber in fluid communication with a fluid inlet. The housing further includes a fuel outlet opening in fluid communication with the fuel chamber. The housing defines a seating surface around the outlet opening. A valve body is moveably disposed within the housing and moves between open and closed positions. The valve body contacts and seals against the seating surface and prevents fuel flow through the outlet opening when the valve body is in the closed position. The valve body is biased into the closed position. The valve body includes an extension with at least a portion thereof disposed in the fuel outlet opening to guide the valve body.

Abstract: A delivery unit arranged in a surge chamber of a fuel tank includes an ejector for filling the surge tank. One half of the ejector is defined by the surge chamber and the other half is defined by a pump holder holding a fuel pump in the surge chamber. The pump holder and the surge chamber are configured as components which are easy to manufacture, thereby allowing the delivery unit to be cost-effectively configured.

Abstract: A fuel supply device for an internal combustion engine of a motor vehicle has a supply container, a feeding aggregate which is electric-motor driven and feeds fuel from the supply container to an injection device of the internal combustion engine, a pressure sensor which determines a fuel pressure downstream of the feeding aggregate, a control device connected with the pressure sensor and controlling an operation of the feeding aggregate so that a fuel pressure is at least approximately below a nominal pressure, a throttled discharge arranged downstream of the feeding aggregate, a valve device operative for controlling the discharge depending on a fuel pressure and opening the discharge when a fuel pressure located under the nominal pressure is exceeded, and a check valve integrated in the feeding aggregate.

Abstract: A fuel supply for an internal combustion engine includes an improved construction for inhibiting vapor from appearing in the fuel supplied to the engine's combustion chamber(s). A fuel injector, as one of fuel supply devices, is provided for supplying fuel to the combustion chamber of the engine. There are a first and second fuel reservoirs. The first fuel reservoir stores fuel and delivers it to the second fuel reservoir through a first fuel supply conduit, while the second fuel reservoir temporarily store the fuel and delivers it to the fuel injector through a second fuel supply conduit. The excess fuel is returned to the second fuel reservoir from the fuel injector through a fuel return conduit. The fuel supply includes a fuel cooling device for cooling the fuel passing through at least one of the conduits. The construction of the fuel supply and the fuel cooling device permits them to be located with the tight confines between the engine and a protective enclosure (e.g., a cowling of an outboard motor).

Abstract: For each cylinder of the internal combustion engine, the fuel injection system has one fuel pump, one fuel injection valve, and one line connecting the fuel injection valve to the fuel pump. To control the injection, a first electrically triggerable control valve is disposed on the fuel pump, by which valve a communication of the high-pressure side of the fuel pump with a relief chamber is controlled. The onset of fuel injection is determined by the closing time of the first control valve, by which the high-pressure side is disconnected from the relief chamber. Near the fuel injection valve, a second electrically triggerable control valve is disposed, by which a communication of the fuel volume, located in the fuel injection valve, with a relief chamber is controlled. The end of the fuel injection is determined by the opening time of the second control valve, and as a result rapid relief of the fuel volume located in the fuel injection valve and thus rapid closure of the fuel injection valve are achieved.

Abstract: In a tank for a system for injection supply of LPG for internal-combustion engines, a number of hydraulic-connection elements associated to a service flange which closes the top opening of the tank are mounted on said flange by fixing to the bottom surface of the latter, without having any parts that are mounted via through holes of the flange. Provided inside the tank is an electrically operated pump which is fixed to the bottom wall of the tank structure and which in turn carries the structure of a level-sensing device of a capacitive type.

Abstract: A fuel system for a marine engine has a recirculation cooler which receives a portion of fuel discharged from a fuel pump, cools that fuel, and then returns the cooled fuel to the inlet of the fuel pump to reduce fuel vapor formation and to cool the pump as the cooled fuel flows through the pump. The recirculation cooler is preferably formed of a material of high thermal conductivity and has a water passage adjacent to the fuel passage to reduce the temperature of the fuel that flows through the recirculation cooler. The recirculation cooler is preferably used in high heat applications or with a speed controlled fuel pump, with a pulse width modulated drive, for example. In these applications, during at least some fuel flow conditions, the flow of fuel through the fuel pump may be insufficient to cool the fuel pump motor and may cause increased fuel vapor formation.

Abstract: The fuel supply apparatus has a reservoir (14) arranged within a fuel tank (12) from which fuel is drawn by a fuel feed unit (16) and supplied to an internal combustion engine (10). Unburned fuel from the internal combustion engine (10) is fed back into the fuel tank (12) via a return line (30). A control valve (34) is arranged in the return line (30), by which a connection of the return line (30) with a jet pump (38) is controlled, which supplies fuel from the fuel tank (12) to the reservoir (14). The control valve (34) has a floating body floating on the fuel in the reservoir (14) when it is nearly filled or completely filled, by which a control element of the control valve (34) is movable. When the reservoir (14) is not in its maximum filled state (hmax) the jet pump (38) is connected with the return line (30), but when the reservoir (14) is in its maximum filled state (hmax) the jet pump (38) is disconnected from the return line (30), which then opens into the reservoir (14).

Abstract: A method and apparatus to increase the fuel economy of a diesel engine having an injection system fuel rail by increasing the flow rate of fuel being returned to the tank hence decreasing the temperature of the fuel returned to the tank from the fuel rail while maintaining a given pressure at the fuel rail.

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 fuel supply unit has a pot-shaped reservoir (12) arranged in a fuel tank (10), in which a fuel feed device (18) is arranged. The fuel feed device (18) feeds fuel from the fuel tank (10) to the internal combustion engine. The fuel supplied by the fuel feed unit (18) feeds fuel through a fuel filter (24). The hydraulic connection of the filter (24) with the fuel feed device (18) is made by means of a distributor plate (36). A tubular projecting portion (32) is formed on an outer wall section (14) of the reservoir (12) in one piece with the outer wall section. The tubular projecting portion (32) is open on its top side and at least partially forms a housing for the filter (24) and a filter element (34) is inserted in it. The distributor plate (36) forms a covering element for the housing (32) since it is tightly connected with the top side of the housing (32).

Abstract: The fuel supply unit has a fuel feed device (12) arranged in a fuel tank of a motor vehicle. The fuel feed device (12) feeds fuel from the fuel tank (10) to the internal combustion engine. A fuel filter (16), a non-return valve (18) and a pressure regulator (20) are arranged in the fuel tank (10) and in a fuel line connecting the fuel feed device (12) and the engine. These components are mounted on a plate-shaped plastic supporting member (36), in which hydraulic connections between the fuel feed device (12) and the components and/or between the components are formed. A covering element (46) is connected tightly with the supporting member (36) so as to form a passage (48) between it and the supporting member (36) for hydraulic connection of the fuel feed device (12) with the main filter (16).

Abstract: An apparatus for feeding fuel from a supply container to an internal combustion engine of a motor vehicle is described. The apparatus has a fuel feed unit which on the intake side communicates with a suction container, communicating with the supply container, and on the pressure side communicates with the engine, and having a return line for feeding excess fuel into the suction container. In its bottom region the suction container has a closing element, which is movable between a first position, in which the suction container is opened relative to the supply container, and a second position, in which the suction container is closed relative to the supply container.

Abstract: A method for cooling a fuel injection system and fuel injection systems are proposed that improve the hot-starting performance of the internal combustion engine.

Abstract: A two stage pressure limiting valve comprises a valve member arranged for axial movement in a bore. The valve member is biased to close a side spill port and a valve opening communicating with a source of high pressure. Pressure at the valve member/valve seat interface in excess of a threshold value forces the valve member away from the seat whereby a pressure relief volume of fluid is permitted to flow through the valve member itself. Sustained high pressure forces the valve member further away from the valve seat to open a side spill port and establish a larger diversion of fluid at a stable lower pressure level.

Abstract: A method and apparatus to increase the fuel economy of a diesel engine having an injection system fuel rail by increasing the flow rate of fuel being returned to the tank hence decreasing the temperature of the fuel returned to the tank from the fuel rail while maintaining a given pressure at the fuel rail.

Abstract: A fuel filter system employs a first filter (12) to separate water from the fuel and a second filter (38) which receives the water portion from the first filter (12) and removes the water from the residual fuel with the use of hygroscopic material (42) and recycles the residual fuel back to the fuel tank (16).

Abstract: A drive unit for driving a fuel pump for a small-sized vehicle, which is capable of reducing the current consumption of the fuel pump. A drive unit includes an ECU for controlling the fuel injection amount of a fuel injector. The ECU drives the fuel pump on the basis of control data for controlling the fuel injection amount of the fuel injector and of a power supply voltage of the fuel pump. For example, the fuel pump is driven under pulse-width modulation (PWM) in such manner that a pulse-width of a PWM signal is made larger with an increase in the injection amount of the fuel injector and is made smaller with a decrease in the fuel injection amount of the fuel injector.

Abstract: In a fuel delivery unit for a motor vehicle, having a delivery pump which has a preliminary stage and a main stage, an outlet channel of the preliminary stage is guided radially outward and configured such that it rises upward. An inlet channel of the main stage is guided laterally past the preliminary stage. In accordance with this design, impellers of the delivery pump can be arranged particularly low down and gas bubbles are guided away out of the preliminary stage in a very simple manner.

Abstract: A device for pumping fuel out of a reservoir (10) to the internal combustion engine (12) of a motor vehicle has a jet pump (24), which pumps fuel, returning in a return line (22) from the engine (12), into a reserve container (14) of a fuel pumping unit (16) along with fuel located in the reservoir (10). According to the invention, an intake window (36) is provided, which is located above the propellant stream (38) of the jet pump (24), so that a storage chamber (46) for fuel returning from the reserve container (14) is embodied.

Abstract: A pressure regulating device for high pressure fuel systems includes a pressure sensing element attached directly to a pressure chamber. The pressure sensing element includes a semiconductor element that deflects in response to a deflection of a portion of the pressure caused by fuel pressure within the pressure chamber. A coil is electrically connected with the pressure sensing element and is configured to generate a magnetic field that moves a magnetic armature to control fuel pressure.

Abstract: A pump assembly is comprised of a pump member having a pump wall and a filter element located within a filter housing that is prestressed against the pump wall. In an exemplary embodiment, a housing of the pump assembly is manufactured in a single piece with a clamping element. The clamping element includes a flanged border for gripping behind an edge of the filter housing.

Abstract: A high pressure internal combustion engine having a triple thermal cycle system for improved cooling and combustion utilizing an annular volume surrounding the cylinder having a connecting passage to the combustion chamber allowing air to enter the volume on compression, and a water injection system for injecting water into the volume during initiation of combustion, the water spray changing to steam to drive the air into the combustion chamber during combustion, the air, steam and combustion gases mixing and improving the engine efficiency, the system being combinable with an injection system that conserves energy by pumping high pressure fluid only during the injection process.

Abstract: A fuel supply for an internal combustion engine includes an improved construction for inhibiting vapor from appearing in the fuel supplied to the engine's combustion chamber(s). A fuel injector, as one of fuel supply devices, is provided for supplying fuel to the combustion chamber of the engine. There are a first and second fuel reservoirs. The first fuel reservoir stores fuel and delivers it to the second fuel reservoir through a first fuel supply conduit, while the second fuel reservoir temporarily store the fuel and delivers it to the fuel injector through a second fuel supply conduit. The excess fuel is returned to the second fuel reservoir from the fuel injector through a fuel return conduit. The fuel supply includes a fuel cooling device for cooling the fuel passing through at least one of the conduits. The construction of the fuel supply and the fuel cooling device permits them to be located with the tight confines between the engine and a protective enclosure (e.g.

Abstract: An apparatus for pumping fuel from a tank (10) to the internal combustion engine (12) of a vehicle has a jet pump (24), which supplies fuel returning from the internal combustion engine (12) in a return line (22) together with fuel disposed in the tank (10) into a storage reservoir (14) of a fuel delivery unit (16). The invention proposes embodying a restriction (23) for the fuel between a seat edge (31) and a spring-loaded ball (32). In addition, inlet openings (39) for the fuel disposed in the tank (10) are embodied in the vicinity of the restriction (23). The apparatus has the advantage of a high delivery output, a compact design, and a delivery onset even when there are relatively low return quantities. Furthermore, fuel is prevented from flowing back into the return line (22).

Abstract: A fuel supply system for supplying an internal combustion engine has a consumption-controlled fuel feeding module which at a suction side is connected with a supply tank and at the pressure side is connected with an internal combustion engine. At pressure side of the fuel feeding module a return conduit is leads to at least one pump for filling of the fuel feeding aggregate. A preliminarily supplied return is blockable by a switchable adjusting member which adjusts the return quantity with an open switchable adjusting member by means of a throttle element in all operational conditions above a minimal pump consumption.

Abstract: A fuel pump module for a fuel tank in a vehicle includes a reservoir adapted to be disposed in the fuel tank and a partition disposed in the reservoir to divide the reservoir into a fuel sensing chamber and a fuel storage chamber. The fuel pump module also includes a conduit conducting return fuel from an engine of the vehicle to the fuel storage chamber of the reservoir. The fuel pump module includes a fuel pump disposed in the reservoir and having an inlet disposed in the fuel sensing chamber and an outlet disposed in the fuel storage chamber. The fuel pump module further includes a fuel usage priority valve to allow fuel from the fuel storage chamber to flow to the fuel sensing chamber to provide the inlet of the fuel pump with fuel from the fuel storage chamber.

Abstract: An engine includes an air induction system, a fuel supply system, a lubrication system and a ventilation system. The fuel supply system has a fuel reservoir in which a space for fuel vapors is defined. The lubrication system lubricates a component of the engine with lubricant. The ventilation system couples a crankcase of the engine with the air induction system so as to deliver oil vapors in the crankcase to the air induction system. A fuel vapor passage is arranged to couple the space of the fuel reservoir with the ventilation system.

Abstract: A fuel pump module 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 fuel pump module assembly also includes a conduit conducting return fuel from an engine of the vehicle to the reservoir and a one-piece jet pump disposed in the reservoir and having an inlet operatively connected to the conduit. The jet pump has a nozzle to discharge fuel into the reservoir.

Abstract: A fuel tank cover assembly for a fuel tank of a vehicle includes a cover adapted to close an opening in the fuel tank having a fuel reservoir disposed therein, a return guide rod extending from the fuel reservoir toward the cover, and a valve disposed between the cover and the return guide rod to allow one-way flow of fuel from the cover to the fuel reservoir.

Abstract: A fuel tank unit of a motorcycle comprises a tank body having a bottom portion to which a through hole is formed in a standing state of the motorcycle, a fuel pump mounted to the bottom portion of the tank body, a pump case having a bottomed bawl-shape mounted to be liquid-tightly to the through hole formed to the tank body so as to communicate an inner space of the pump case with an inner space of the tank body through the through hole, and a suction unit for the fuel pump disposed in the pump case at a height level between the bottom portion of the tank body and a bottom surface of the pump case. A pump mount bracket is further mounted to the bottom portion of the tank body to be liquid-tightly and formed with a pump mount hole to which the fuel pump is mounted.

Abstract: The present invention improves operation of a compression ignition engine using a fuel emulsion. Fuel emulsions tend to separate at high temperatures and pressures as a surfactant in the emulsion looses its effectiveness. The present invention employs a fuel cooling device to reduce the fuel emulsion temperature before returning the fuel emulsion to a fuel tank.

Abstract: A fuel storage and distribution system for heavy and medium duty trucks which include dual fuel tanks (24, 26). An electric transfer pump (22) transfers fluid from the tank with the greatest volume to the tank with the lowest volume. Fuel level sensors (18, 20) measure the fluid levels in the fuel tanks (24, 26) and provide inputs to the electric transfer pump (22). Fuel may be transferred in either direction between the two fuel tanks.

Abstract: This invention relates to a filter in which a fuel pump for drawing fuel from a tank and a fuel filter unit for filtering foreign matter from the fuel which has been drawn from the tank by the fuel pump are integrally assembled together. More particularly, the invention relates to a filter improved such that the amount of electric charge, which builds up on the filter, is not increased to such an extent that the resin is rapidly deteriorated. In one embodiment, when forming a filter by assembling a generally cylindrical filter element around an outer periphery of a generally cylindrical pump, a cover for covering the filter element is made of a nonconductive material, and the generally cylindrical filter element is of the type which filters foreign matter from the fuel by causing the fuel to flow radially therethrough. With this type of filter element, the amount of electric charge can be reduced.

Abstract: A pressure regulating valve and system, including a pressure regulating valve having a housing defining a chamber with a first passage and second passage; a pressure operative member separating the first and second passages, the member having at least a first and second position, the first passage having a first volume and flow therethrough when the member is in the first position, and the first passage having a second volume and a first portion of the flow therethrough and the second passage having a second portion of the flow therethrough when the member is in the second position; and a spring biasing the member to the first position; an injector communicating with the valve; a diverter communicating with a fuel supply and the valve; a filter between the first outlet and the valve; and a fuel pump located between the fuel supply and the diverter.

Abstract: A one-piece non-magnetic poppet of a first material for controlling fluid flow. The poppet is moves from a first position to a second position. In the first position, the poppet plugs an aperture so as to resist fluid flow through the aperture. In the second position, the poppet is in a position that allows fluid flow through the aperture. The poppet may be coup led directly with an armature disposed within the housing.

Abstract: A fuel filter drain system continuously pumps filtered and water from a locomotive diesel engine fuel filter. A ball valve disposed along the drain line between the fuel filter and the fuel tank is modified to include a ball valve that is approximately 0.031 inches in diameter or sufficiently small to purge the fuel and water, and also maintain fuel pressure within acceptable limits.