Abstract: It is an object of the invention to provide a technology for appropriately recovering a decreased HC oxidizing ability of rhodium (Rh), in an exhaust gas control apparatus including a catalyst that contains rhodium (Rh) and a particulate filter (5). In this exhaust gas control apparatus, rich-spike control is prohibited and a NOx storage reduction catalyst is placed in a reduction atmosphere during a period in which a temperature of the NOx storage reduction catalyst is equal to or higher than a predetermined temperature, in a course of decreasing the temperature of the NOx storage reduction catalyst after a PM trapping ability forcible recovery process of the particulate filter (5) is completed. Thus, the decreased HC oxidizing ability of rhodium (Rh) is recovered.

Abstract: In an exhaust gas purification apparatus for an internal combustion engine (1) equipped with independent exhaust passages (2a, 2b) provided one for each cylinder group (1a, 1b) with a catalyst (3a, 3b) having a NOx trapping ability being arranged in each exhaust passage, the present invention is intended to provide a technique that can independently control the flow rates of exhaust gases flowing into the respective catalysts.

Abstract: Method for lambda control in an internal combustion engine with a catalytic converter in an exhaust tract and at least one lambda probe mounted inside the catalytic converter. With this arrangement of the upstream probe there are signal delays which slow down the lambda control. To compensate, the measurement signals from the first lambda probe are applied to a lambda analysis unit which corrects measurement signal delays, and the corrected lambda probe signal is applied to a unit for lambda control. Both lambda probes are connected to a unit for lambda control.

Abstract: The description relates to a control strategy for assisting regeneration of a particulate filter for a turbocharged diesel V-engine. The engine has a common-rail fuel injection system 6, 7 and two cylinder banks 1,2, each cylinder bank 1, 2 having a respective exhaust pipe, designated the low pressure (LP) exhaust pipe 3 and the high pressure (HP) exhaust pipe 4. The two exhaust pipes 3, 4 are in communication with one another by a connecting pipe 5 and have two exhaust gas turbochargers 30, 40 each connected in a respective one of the exhaust pipes. The LP exhaust pipe 3 being provided with an exhaust shut-off valve 80 in order to operate the engine either with a single turbocharger 40 when the valve 80 is in its closed position or with the two turbochargers 30, 40 when the valve 80 is in its open position. The LP exhaust pipe 3 is connected to a diesel particulate filter (DPF) 100 and the HP exhaust pipe 4 is connected to a diesel oxidation catalyst (DOC) 90 and to the DPF 100.

Abstract: A silencer for a motorcycle with relaxed layout restrictions has a drum portion connected to a head. A conduit extends through the drum portion in a direction of connection. The drum portion decreases in cross sectional area toward a downstream side. A catalyst holding portion formed in the head has a catalyst fixed member to which a catalyst inserted member is fixed at a position upstream of the drum portion. A catalyst is inserted into the catalyst inserted member.

Abstract: A high-pressure metering pump for providing reductant in a single fluid engine exhaust dosing system, comprising: a solenoid for actuating a piston slidably received within an inner bore of a valve housing of the pump, the inner bore having a pressure chamber with an inlet check valve and an outlet check valve; and wherein movement of the piston causes high pressure reductant to be received at an atomizer of the system, the atomizer being disposed in a location to cause a maximum reduction of undesirable pollutant in the combustion gases of an engine.

Abstract: The invention relates to a hydrostatic drive comprising a hydraulic pump (1) and at least one hydraulic engine (3). Said hydraulic engine (3) is contacted to a closed circuit via a first working line (5) and a second working line (6). In order to limit the swept volume flowing in one of the two working lines (5) towards the hydraulic pump (1), a volume flow divider (60) is provided in the working line (5) and allows to remove a partial volume flow from the working line (5).

Abstract: A hydraulic system for a work machine is operative to condition hydraulic fluid supplied by a pressure source when there is no demand on the pressure source for the hydraulic fluid by a hydraulic function of the work machine.

Abstract: A hydraulic transmission system features a first hydrostatic motor (1) and a second hydrostatic motor (4), which are connected to an output shaft (3) by way of a compound transmission, and which, in order to reach a minimum and a maximum rotation speed of the output shaft, are, on the one hand, adjustable with respect to their displacement volume by way of electric valves (9, 17) and, on the other hand, can be connected or, as the case may be, separated from a conveyor line (7) and a suction line (8) of a hydraulic pump.

Abstract: A control system for operating vanes of a turbocharger turbine (16T) and for operating a turbine-shunting bypass valve (22) according to a strategy wherein a processor executes an algorithm for selectively unenabling the control system to operate the bypass valve when the control system is operating the vanes to adjust exhaust back-pressure on the engine within a range of effectiveness for the vanes to control the exhaust back-pressure and enabling the control system to operate the bypass valve when the control system has operated the mechanism to a limit of the range of effectiveness.

Abstract: A motor has an engine block with cylinders arranged to fire in a firing order. A recirculation system delivers combusted mixture from a cylinder which has just fired to at least partly mix with fuel for the next cylinder in the firing order. Injector bodies (401-405) are associated with each cylinder. Each injector body (401-405) has an internal chamber (424) in communication with a fuel inlet port (426) for delivering fuel into the internal chamber, a fuel outlet port (428) for delivering fuel under pressure from the chamber into the associated cylinder and a combusted mixture out-let port (442). The combusted mixture outlet port (442) of each injector body (401-405) is fluidly connected to the combusted mixture inlet port (438) of the next cylinder in the firing order. Alternatively, the recirculation system is arranged substantially internally within the cylinder head.

Abstract: An electrothermal thruster including a heating section through which a propellant fluid is intended to pass to be heated before being exhausted, the heating section being supplied by an electric power source The electric power source includes photovoltaic cells mounted on the heat exchanger through which the propellant fluid is intended to pass before reaching the heating section. Such a device may, for example, find application in the area of spacecraft propulsion.

Abstract: A device for producing a net force against a base comprising a mass change object, an accelerator, a power source operatively connected to the mass change object and configured to selectively apply to the mass change object (1) a mass-increasing waveform, characterized in that the time rate of change of the power of the mass-increasing waveform is positive, and (2) a mass-decreasing waveform, characterized in that the time rate of change of the power of the mass-decreasing waveform is negative; the power source being configured to apply the mass-increasing waveform to the mass change object when the acceleration of the mass change object has at least a component opposite to the net force direction, and to apply the mass-decreasing waveform to the mass change object when the acceleration of mass change object has at least a component in the net force direction; wherein the mass-increasing waveform is a different waveform, as a function of time, than the mass decreasing waveform.

Abstract: A fan-turbine rotor assembly (24) includes a multitude of turbine blades (34) which each define a turbine blade passage which bleed air from a diffuser section (74) to provide for regenerative cooling. Regenerative cooling airflow is communicated from the radial core airflow passage (80) through the diffuser passages (144), through diffuser aspiration passages (146A, 146B) and into the turbine blade passages (150a). The regenerative cooling airflow exits from the turbine blade passage (150a) and transfers received thermal energy into an annular combustor (30). The received thermal energy is recovered at the highest temperature in the cycle.

Abstract: A re-circulating cooling system can be used with a curing system in order to reduce the exhaust requirements for the system. Further, using a cooling fluid such as nitrogen reduces the production of ozone and the sealing requirements for the system. A simple heat exchanger can be used between return and supply reservoirs in order to remove heat added to the re-circulating fluid during circulation past the curing radiation source. The nitrogen can come from a nitrogen source, or from a membrane or other device operable to split feed gas into its molecular components to provide a source of gas rich in nitrogen. An ozone destruction unit can be used with such a cooling system to reduce the amount of ozone to acceptable levels, and to minimize consumption of the nitrogen. A catalyst can be used to deplete the ozone that does not get consumed during the reaction.

Abstract: The invention relates to a cooling and/or heating device (10, 60) of one or more units (8a to 8c) that are to be heated or cooled. The device comprises: a conduit network containing flow and return conduits (14, 16; 68, 70), several circuits (12a to 12c; 32 to 38, 74 to 78) being connected to the flow and return conduits (14, 16; 68, 70); several valves (28, 88, 96) that are configured to adjust the passages of the valves in order to regulate or control the volumetric flow through the circuits (12a to 12c; 32 to 38; 74 to 78), a fluid that acts as a heat transfer medium or coolant in the conduit network; and at least one consumer in each circuit, such as a radiator or heat sink (22), heat exchanger or similar.

Abstract: The present invention is a method and apparatus for cooling a heat source. In one embodiment a heat exchanger is provided and includes a channel for receiving a coolant, the channel having a first surface and an opposing second surface. A mesh plug is disposed in the channel for turbulently mixing the coolant within the channel. The first surface of the channel is disposed proximate a semiconductor heat source. In one embodiment the first surface comprises plastic. In one embodiment, the second surface comprises metal, for example, copper. In one embodiment the mesh plug comprises a nickel-coated copper mesh.

Abstract: A method for affecting a scheduled defrost operation for a refrigeration system includes the steps of: (a) after an extant the scheduled defrost operation commences, evaluating at least one predetermined parameter relating to operation of the refrigeration system; (b) if the at least one predetermined parameter manifests a behavior of at least one first predetermined nature over at least one first time interval, continuing the extant scheduled defrost operation; and (c) if the at least one predetermined parameter manifests a behavior of at least one second predetermined nature over at least one second time interval, discontinuing the extant scheduled defrost operation.

Abstract: The invention relates to a method for controlling an expansion valve, in particular for vehicle air-conditioning systems operated with CO2 as the refrigerant, with a valve housing which has a feed opening and a removal opening, with a valve-closing member which closes a valve seat of a passage opening arranged between the feed and removal openings, and with a resetting device which acts in the closing direction of the valve-closing member, an adjusting element, which is assigned to the valve-closing member, on the low-pressure side being activated via a predetermined threshold value as the low pressure rises or as the temperature on the low-pressure side rises and actuates at least one actuating element by means of which a closing force of the resetting device acting on the valve-closing member is reduced such that a passage opening is enlarged or a passage of a bypass valve arranged on the low-pressure side, which passage is arranged parallel to the passage opening, is opened.

Abstract: A vehicle has a main and an auxiliary air conditioning system. The main system includes a main compressor driven by the main vehicle engine, a main condenser, a main evaporator, and a main fan for discharging air through the main evaporator into a driver area of the vehicle. A secondary evaporator is located in a cabinet in an additional area of the vehicle and is connected with the main compressor for receiving first refrigerant simultaneously with the main evaporator. An auxiliary air conditioning system is in the cabinet and includes an AC powered auxiliary compressor, an auxiliary condenser and an auxiliary evaporator. An on board auxiliary power provider is driven by an auxiliary engine to supply AC power to the auxiliary compressor. An additional area fan moves air through the auxiliary and secondary evaporators into the duct.

Abstract: A controlled flow heat extraction and recovery apparatus using waste heat from a cooling system to heat water to be held in at least one heated water storage tank thereby providing heated water having a purposeful end-use, increasing cooling efficiencies in a cooling system and heating efficiencies in a hot water heating system.

Abstract: A refrigerated container with an anti-collision plate and a reinforcing rib being vertically disposed on a surface of an inner side plate facing an outer side plate. The anti-collision plate is disposed on a lower portion of the surface of the inner side plate and formed with an opening matching with a lower portion of the reinforcing rib.

Abstract: A display assembly for a refrigerator includes: a display; a frame having a mounting part for mounting the display and provided on an outer wall surface of a refrigerator; and a tilting unit fixed to the display and the mounting part and allowing the display to be tilted. A direction of a screen of a display unit can be controlled, and thus, restrictions of a viewing angle of the display can be overcome.

Abstract: An apparatus and method for generating water from an air stream is disclosed. The apparatus has an inlet for receiving an air stream, a condensing element located in the air stream, a collector for gathering water vapor condensate that is formed on the condensing element when the condensing element temperature drops below the dew point temperature of the ambient air stream, and an ozone generator that precisely generates ozone required to disinfect the water vapor condensate. In some embodiments of the invention, the ozone is also added to the air stream for disinfecting the air stream and associated elements of the apparatus.

Abstract: A procedure for obtaining water from a mass of atmospheric air comprising the following stages. Creating a flow of air and circulating it through the secondary circuit of an exchanging element for preliminary cooling, which may or may not initiate the change of water's state from vapour to liquid; subjecting the flow of pre-cooled air to further cooling capable of lowering the temperature to at least below the dew point in order to originate the change from vapour to liquid or continue to the process if it was initiated during the preliminary cooling; collecting the condensed and/or frozen water; recirculating the flow of dry, cool air through the primary circuit of the exchangers in order to use the residual cold for preliminary cooling.

Abstract: Disclosed are a water tank and a refrigerator having the same. The water tank includes a tank main body provided with a water storage space formed therein and a discharge hole; a tank cover connected to the tank main body for opening and closing the water storage space; a valve movably installed in the tank main body for opening and closing the discharge hole; and a valve driving unit moving the valve using magnetic force so as to cause the valve to open and close the discharge hole. The water tank is opened and closed by the magnetic force of magnets and the restoring force of elastic members, and thus it is possible to prevent water stored in the water tank from leaking out in a process of attaching or detaching the water tank to or from the rear surface of a door or a refrigerator.

Abstract: Refrigerator cabinet, especially for bringing bottles of wine to the proper serving temperature, comprising a refrigerating system with a heat exchanger (14a, 14b), which is arranged in a heat exchanger chamber (11, 12), a storage compartment (7) which is enclosed by outer cabinet walls (1, 2, 3, 4, 5) and by a cabinet door (6), and a partition wall (8) for delimiting a first (7a) and a second (7b) zone within said storage compartment. The partition wall is fixable at different positions within a zone size varying portion (9) of said storage compartment for allowing the sizes of the first and second zone to be varied.

Abstract: An engine heat pump whose compression work is reduced without increase of consumed electric power, thereby improving its driving efficiency (energy efficiency). An engine heat pump comprises: an engine; a main compressor driven by the engine; a sub compressor delivering a refrigerant to be joined to a refrigerant delivered from the main compressor; an indoor heat exchanger; an outdoor heat exchanger; an expansion valve for the indoor heat exchanger; an expansion valve for the outdoor heat exchanger; and a supercooling heat exchanger disposed on a liquid refrigerant passage (main passage) of a connection passage between the indoor heat exchanger and the outdoor heat exchanger. In the supercooling heat exchanger, a supercooling liquid refrigerant branched into a branching passage supercools a liquid refrigerant before being branched. The sub compressor is driven by the engine so as to compress the supercooling liquid refrigerant.

Abstract: An evaporator implemented by a laminated heat exchanger includes a refrigerant inlet header section, a refrigerant outlet header section, and plural inter mediate header sections. A sixth intermediate header section includes a refrigerant channel allowing refrigerant flow in the longitudinal direction thereof and whose downstream end with respect to the refrigerant flow direction is closed, and causes refrigerant to dividedly flow into a plurality of refrigerant flow tube portions. Refrigerant that has flown into the refrigerant inlet header section from a refrigerant inlet flows into the refrigerant outlet header section through the refrigerant flow tube portions and through the intermediate header sections and flows out from a refrigerant outlet. A resistive plate portion within the sixth intermediate header section blocks the refrigerant channel thereof extending in the longitudinal direction thereof.

Abstract: A plate-fin heat exchanger having a plurality of layers for indirectly exchanging heat between two or more fluids. The heat exchanger is provided with two sections and inlets and outlets to the sections to cause streams of the fluids to flow within the two sections parallel to the length of the heat exchanger between central locations and the ends of the heat exchanger. In such manner, the cross-sectional flow area of such a heat exchanger is greater than the heat exchanger in which the flow is from one end to the other end of the heat exchanger. This increase in cross-sectional flow area reduces the pressure drop within the heat exchanger.

Abstract: A method for producing a pivotal frame assembly for a jewelry locket is provided. The method comprises the steps of stamping out a first frame element from a sheet of metal, including forming the first frame element with an extending lip, and then also stamping out a second frame element from a sheet of metal. Then, a pin is positioned along the lip, and the lip is wrapped about the pin in order to form a tubular element that is rotatable about the pin. Finally, the pin itself is attached to the second frame element, so that the first frame element is pivotally connected to the second frame element.

Abstract: A process therewith, with the electro-deposition method, a not precious metal or metallic alloy “shell” (2) is produced, openings (3) are made therethrough the low flux (1) is made to drip outside by melting, then metallic “plugs” (4) are applied by brazing, then the coating is made with galvanic bath with a precious metal or metallic alloy film (5).

Abstract: A method for manufacturing a glass substrate for a magnetic disk involving press-molding a heated glass material in an inside space of a molding die comprising a pair of dies, each having a predetermined processing plane, and a barrel die for slidably guiding the dies while forming an outer circumference of the glass material joined to both principal surfaces corresponding to the dies as a molding-free face, cooling the press-molded glass substrate and forming a predetermined through-hole in a central portion of the glass substrate.

Abstract: A glass molding machine includes a shaping die, a temperature controller, a die assembling state, a glass molding stage and a die disassembling stage. The shaping die includes a first, second and body molds. The die assembling stage feeds a glass material to the first mold with the body mold being fitted to the exterior of the first mold. The die assembling stage fits the second mold to the body mold to assemble the shaping die. The glass molding stage heats and molds the glass material. The die disassembling stage removes the second mold from the body mold after the molding, to remove the molded glass product. The temperature controller provides a temperature difference so that a temperature of the body mold is higher than a temperature of the second mold in the die assembling stage and in the die disassembling stage.

Abstract: A burner nozzle for depositing soot on a glassware mold includes an inner member and an outer member surrounding at least a downstream portion of the inner member. A first gas passage extends through the inner member for delivering a fuel gas to at least a single outlet port from the inner member. A second gas passage extends between the inner and outer members in an annulus surrounding the first passage for delivering a second gas through the annulus to at least one second outlet port. The first and second outlet ports preferably form an annular composite array in which the first and second outlet ports alternate with each other. The second plurality of ports preferably comprise slots having long dimensions radial to the annular array. The first plurality of outlet ports preferably are circular.

Abstract: Disclosed is a plasma torch for overcladding a primary preform of an optical fiber. The plasma torch includes a confinement tube for confining an induced plasma and a torch base. The torch base has a ceramic surface internal to the confinement tube. The plasma torch has extended life even at high input powers.

Abstract: A latch needle (1) having a latch (6) provided on its latch spoon on the side facing away from the hook (4), with at least two facets or molded surfaces (10, 11). These facets (11, 11?), which converge toward the latch back (23), decrease the volume of the latch head (8). Consequently, it is possible to reduce the width C of the recess (27), thus resulting in a stabilization of the knitting machine needle (1) in this region.

Abstract: A washer and method of forming a drum thereof are disclosed. The present invention includes a body, a tub provided within the body to accommodate water therein, a drum provided within the tub to have at least one lifter built in one body of the drum, and a motor for rotating the drum. Accordingly, the lift and drum are built in one body to perform a role of the lifter sufficiently and a volume of the drum can be maximized by maintaining an exterior size of the drum as it is.

Abstract: A free standing detergent dispensing device removably insertable into an automatic washing machine, the device comprising a cartridge having a plurality of unsealed chambers to accommodate a detergent composition, a directing means to direct wash liquor selectively into a chamber of the cartridge to contact the detergent composition therein, each chamber having an inlet in the form of a tortuous path to obstruct unwanted flow of wash liquor into an unselected chamber.

Abstract: A front-loading drum-type washing machine includes an appliance housing, a suds container a drum rotatably disposed in the suds container, and a bellows seal disposed between the suds container and the appliance housing. The bellows seal is configured to seal a door opening area of the appliance housing and includes a laundry deflector disposed in a region of a twelve o'clock position of the bellows seal. The laundry deflector is directed towards the drum and includes a channel system forming an opening in a wall of the bellows seal. A conduit is provided for supplying at least one of water, wash liquid and rinse liquid to the door opening area. The conduit is in fluid connection with the opening in the wall of the bellows seal.

Abstract: A strap lock comprises a female fastener, a male fastener, a key-unlocked unit and a numeral unlocking unit. The female fastener includes a first seat body and a second seat body movably mounted on the first seat body. The male fastener is detachably attached to the first seat body of the female fastener. Both the key-unlocked unit and the numeral unlocking unit are disposed on the second seat body. The strap lock can be unlocked by either one of the key-unlocked unit and the numeral unlocking unit.

Abstract: A theft deterrent device includes first and second jaws pivotally connected to one another and pivotally movable between open and closed positions. The jaws form in the closed position an interior chamber and a through passage for receiving therethrough a portion of an article of merchandise. A lock slide is slidable within the interior chamber between locked and unlocked positions and lockable by a lock in the locked position to secure the first and second jaws together in the closed position. The lock slide includes lock hooks which lockably engage lock hooks of the second jaw. The lock slide includes locking and unlocking ledges which a resilient, magnetically attractable lock finger of the lock respectively engages in the locked and unlocked positions. An externally accessible thumb grip operatively engages the lock slide to move it between the locked and unlocked positions. An EAS tag is disposed within the device.

Abstract: A merchandise lock has a shell, an external sleeve, an internal sleeve, at least one stationary locking sheet and a movable locking sheet. The external sleeve is mounted on an end of the shell. The internal sleeve is mounted in the shell and the external sleeve. The stationary locking sheet is mounted in the internal sleeve and has a locking recess and a tongue extending out of the internal sleeve. The movable locking sheet is mounted pivotally in the internal sleeve and has a locking recess and a tongue extending out of the internal sleeve. When the lock cylinder is locked, the locking recesses align with each other and the tongues misalign with each other. When the lock cylinder is unlocked, the locking recesses misalign with each other and the tongues align with each other.

Abstract: Security System for Sewer, Aqueduct, Telephone and Energy System Manhole Caps or Covers including an electromechanical cover (1), on the surface of which is placed an electromagnetic crane (2) that has a handle (3), and that has an emitting coil (4), a battery (5), an electronic card (6) and a control panel (7); inside a waterproof space at least partially enclosed by the electromechanical cover (1) are placed a receiving coil (8), electronic card (12) and two motors (9) that move a pin (10) that has bellows (11), and that are connected to an electronic card (12). The system operates by the emitting coil (4) transferring electromagnetic energy to the receiving coil (8), and at the same time sending an exclusive binary code.

Abstract: A lock for a motor vehicle is described. The lock includes a lock latch which is displaced upon closing of the lock by a closing element from an open position in the direction of a closed position. A spring element loads the lock latch in its closed position, which is fixed in its open position in a frictional and/or formfitting way by a removable open-position retention part. Upon closing of the lock, the closing element or another component detaches the open-position retention part from the lock latch.

Abstract: A dead front actuating assembly actuates a device in standard ambient light conditions. The dead front actuating assembly includes a housing defining a periphery and an interior volume. A cover plate is fixedly secured to the housing at the periphery. The cover plate defines an inboard surface facing the interior volume and an outboard surface opposite the inboard surface. The outboard surface is opaque in standard ambient light conditions. The dead front actuating assembly also includes a switch that is operatively connected to the inboard surface of the cover plate at a defined location for toggling the device between on and off conditions. The dead front actuating assembly also includes a presence sensor identifying when an operator is disposed adjacent the cover plate. A back light inside the housing illuminates the cover plate such that light passes through the cover plate and out the outboard surface to illuminate the switch for the operator.

Abstract: An electric lock device including a movable member, a cam plate (5) rotated in an unlocking direction and a locking direction by the driving of a drive source, and a lock member (8) including a cam contact surface (10) in contact with a sliding surface (6) of the cam plate (5). The lock member (8) follows the sliding surface (6) to be displaced between a locking position for inhibiting the movement of the movable member and an unlocking position for allowing the movement of the movable member. The cam profile of the sliding surface (6) is set so that the rotary torque of the cam plate (5) necessary for moving the lock member (8) from the locking position to the unlocking position can be maintained at approximately a constant value.

Abstract: A deep longitudinally extending groove cut into a face of a key blade is either of isosceles-triangle or right-triangular cross section. In addition the face has a shallow longitudinally extending groove parallel to and offset from the deep groove and having a pair of generally planar narrow side flanks extending from the one side face to a common shallow apex line to give the shallow groove a triangular section. One of the narrow side flanks has a transverse width equal to generally half the transverse width of one wide side flank of the deep groove, and the other of the narrow side flanks has a transverse width substantially smaller than the transverse width of the one wide side flank of the deep groove.

Abstract: The invention relates to a method for treating extinguisher powder wastes with the aim of recycling the waste into agricultural fertilizers. The invention includes mixing the extinguisher powder wastes with a viscous cohesive agent, and blending a drying agent into the obtained mixture. The cohesive agent is based on sugar by-products, more particularly being vinasse or molasses. The drying agent is notably based on crushed and dried vegetables and, more particularly, on fruit pulp, for example, grape pulp.

Abstract: A solid urea fertilizer prepared by mixing a solid, flowable, urea formaldehyde polymer with a urea source, such as molten or solid urea to form a fertilizer that has favorable crush strength characteristics, low biuret content, and/or desirable storage and handling properties. The urea fertilizer may contain additionally, an aqueous urea formaldehyde solution or mixture. Optionally, the fertilizer may contain a urease inhibitor and/or a nitrification inhibitor.