Abstract: A fuel pump module (10) includes a fuel reservoir (R), fuel pump (26), manifold (32) connected to a pump outlet (30), a fuel line (FS) for supplying fuel to an engine (E), and a return line (FR) returning unconsumed fuel to the reservoir through a return valve (100). An external jet manifold (20) includes a nozzle (68) through which fuel is directed from the manifold, and a venturi (70) by which a low pressure region is created to draw fuel from a fuel tank (T) into the jet manifold where it is entrained and intermixed with other fuel and discharged into the reservoir. The return valve includes a plunger (122) biased to close the return valve when the fuel pump is shut off. High pressure fuel from the fuel pump acts on the plunger when the engine is running to open the valve.

Abstract: A cooling water pump for internal combustion engine includes a base and an outer cover forming a water input chamber, an impeller supported on a shaft within said chamber, fed shaft includes a bearing/seal unit mounted within the base and the shaft extended outwardly for connection to the engine. A one-piece, fully enclosed and double shrouded impeller is secured to the shaft. Impeller has a central hub with an outer peripheral concave surface, a bottom convex end wall, vanes are secured to the central portion of the concave wall in the bottom wall and project outwardly therefrom with an outer top shroud. The base has a recess within which the bearing/seal unit is mounted. The recess extends outwardly beyond the outer edge convex wall of the hub from a cooling chamber. The vanes direct a portion of the water flowing through the passageway into the recess for cooling purposes and then back into the radially outer portion of the passageway for discharge with the flowing water into the outlet passageway.

Abstract: An integrated fuel system unit (10) comprises a two-stage fuel pump (16) and fuel filter (34). The fuel filter is interposed between the first and second pump stages (S1,S2) so fuel flowing between the stages is drawn through the filter. A spiral-wound fuel line (44) delivers fuel from a fuel inlet (18) to the first pump stage. Water is circulated about the fuel line to cool the fuel flowing therethrough. A fuel pressure regulator (60) in an outlet (20) of the unit diverts fuel from the engine back to a cavity (36) in which the filter is housed if an overpressure condition occurs. This fuel is then mixed with the fuel flowing between pump stages. Water also collects in the cavity and a solenoid (74) controlled water passage (72) allows this water to be entrained with fuel flowing to the second pump stage for the water and fuel to be mixed together and pumped to an internal combustion engine to be combusted therein.

Abstract: A two-stage marine fuel pump (10). A first pump stage (S1) has a fuel inlet (24) and a fuel outlet (26). A second pump stage (S2) has a separate fuel inlet (28) and fuel outlet (30). Each pump stage is stand alone such that while the outlet of the first pump stage can be routed to the inlet of the second pump stage, the pump can be otherwise configured. In these other configurations, there is one path for routing fuel to the fuel inlet of the first pump stage and from the outlet thereof, and a separate path for routing fuel to the inlet of the second pump stage and from the outlet thereof. In these alternate configurations fuel pumped from the first stage of the pump is delivered other than to the fuel inlet of the second pump stage, and fuel supplied to the inlet of the second pump stage is delivered other than from the fuel outlet of the first pump stage.

Abstract: An assembly (10) for pumping fuel from a fuel source to an engine combusting the fuel comprises a housing (14), and a fuel pump (12) mounted in the housing. One end (18) of the housing defines a fuel inlet (20a, 20b) for the pump. A fuel filter (16) is mounted externally of the housing and fuel drawn into the fuel pump flows through the filter. A valve member (22) is fitted onto the end of the housing adjacent the fuel inlet for opening and closing the fuel inlet. The valve member is movable by the fuel filter during its installation to move the valve member to a position at which the fuel inlet is open. Removal of the filter causes the valve member to be moved to a position blocking the fuel inlet. A heater (40a, 40b) is carried on the valve member and is installed adjacent the fuel inlet. The heater heats fuel flowing into the fuel inlet to a predetermined temperature as the fuel is drawn into the fuel pump.

Abstract: A fuel delivery system (10) used on marine vessels (B) has a fuel injected, internal combustion engine (E) for propulsion. A fuel tank (T) stores fuel (F) supplied to run the engine through a supply line (L) extending between the fuel tank and the engine. The tank has a relatively small (1.6 in. diameter) opening (O), and a fuel pump (12) is sized to fit within the fuel tank through this opening. The fuel pump pumps fuel, under pressure, from the fuel tank to the engine. A fuel filter (20) is also sized to fit within the tank and is connected to an inlet (14) of the fuel pump. Fuel is drawn into the fuel pump through the fuel filter. A pressure regulator (30) regulates the pressure of fuel pumped to the engine. The pressure regulator is mounted externally of the tank and the fuel pump is tethered to the pressure regulator for the fuel pump and fuel filter to be installed in the fuel tank without use of external supporting structure.

Abstract: An in-tank fuel pump apparatus includes an elongated motor-pump unit having a motor and pump unit connected in end-to-end relation. An outer cam has a substantially constant diameter enclosing the motor-pump unit and projecting axially outwardly therefrom and defining a control chamber immediately adjacent the one end of the motor-pump unit. A control tower is secured to the end of the motor-pump unit from which the motor cam extends. The control tower includes a body member having a closure plate abutting the motor pump unit, an outlet passageway extending axially from the motor-pump unit to the exterior of the motor cam, a pressure sensor secured within the body member having an inlet connected to a sensing passage connected to the output of the motor pump unit in an outermost circuit board forming the outermost end of the tower unit.

Abstract: An in-tank motor-pump unit includes a motor driven gear pump, a pressure transducer, and a control module as a single integrated package establishing fuel flow at a constant pressure by creating a pulse-modulated motor drive having a fixed "off" and a variable "on" period. A permanent magnet DC motor drives a rotary pump with the required torque operating over the specified speed range and without stalling out at low flow demand. An integrated circuit board includes an IC timing chip, operating in an astable mode, has an input connected to the transducer and an output connected to a MOSFET switch which connects the motor to a power supply. A series resistor connects an amplified voltage signal of the transducer to charge the capacitor and discharge resistor separately connects the capacitor to the input of the timing chip to generate a constant "off" period and a variable operative "on" period of the MOSFET.

Abstract: An integrated fuel system component (10) comprising a fuel pump (52), a fuel filter (30) axially mounted directly below and around the lower portion of the fuel pump, and a spiral-wound fuel line (84) composed of a heat-conductive material mounted concentric to the upper portion of the fuel pump, minimizing the space required for installation. A fuel cooling system encloses the pump housing (70) and the fuel line in sealed chambers (66, 68) through which a liquid coolant is circulated to cool both the fuel pump and the fuel contained within the fuel line. A fuel pressure regulator (104) located between the fuel line and a fuel outlet (100) returns fuel to a fuel reservoir (24) located below the fuel filter, thereby providing a closed loop system. By combining the fuel pump, fuel filter, liquid cooling system, and pressure regulator into a single unit, the integrated unit minimizes vapor lock induced by heat, and optimally houses the fuel system components within a minimal volume of space.

Abstract: A water pump assembly for an internal combustion engine includes an integrated bearing and seal unit consisting of a separate bearing and seal collar in combination with a single piece stamped steel housing. The bearing collar is machined to a standard bearing bore size and a bearing is secured within the bore. The housing includes a flat mount member connected by a conical wall to an elongated tubular flange having an internal diameter slightly greater than the outer diameter of the collar and a length substantially equal to one half the collar length. The collar has an outer enlarged recessed ledge over the inner seal end which is slightly longer than the housing flange. The flange internal diameter is slightly greater than the ledge. In assembly, a plurality of brazing rings are interposed between the enlarged collar and flange, and a brazed joint is formed throughout the elongated interface between the collar and flange. The brazed housing provides the support for the bearing assembly to the engine.

Abstract: Method and apparatus for cleaning fuel injector systems of internal combustion engines which comprises avoidance of burns and possible injuries in setting up the conventional system apparatus in the engine compartment. The present method is characterized by setting up the required connections and apparatus at the rear of the vehicle in an area isolated from the region under the vehicle hood. The invention has other advantages. In particular, filter replacement in the isolated area subsequent to completion of the cleaning process is effected by a novel aspect of the method which involves filter removal as a step in the method. In a conventional method the filter is left in place but ultimately replaced, for comprehensive maintenance of the fuel system, as an additional step. Another advantage of the invention is the method of detecting leakage in injector and fuel flow systems and to detect the extent of clogging of individual injectors to determine the need for replacement.

Abstract: Method and apparatus for cleaning fuel injector systems of internal combustion engines which comprises avoidance of burns and possible injuries in setting up the conventional system apparatus in the engine compartment. The present method is characterized by setting up the required connections and apparatus at the rear of the vehicle in an area isolated from the region under the vehicle hood. The invention has other advantages. In particular, filter replacement in the isolated area subsequent to completion of the cleaning process is effected by a novel aspect of the method which involves filter removal as a step in the method. In a conventional method the filter is left in place but ultimately replaced, for comprehensive maintenance of the fuel system, as an additional step. Another advantage of the invention is the method of detecting leakage in injector and fuel flow systems and to detect the extent of clogging of individual injectors to determine the need for replacement.