Class / Patent application number | Description | Number of patent applications / Date published |
417505000 | Electrically or magnetically actuated distributor | 24 |
20090116987 | PUMP - A pump includes a cylinder formed with a plunger chamber, a low-pressure portion, to which low-pressure fuel is supplied, a plunger reciprocating in the cylinder to pressurize fluid in the chamber, which is drawn from the portion, and a magnet valve having a valve body. A low-pressure passage communicates between the chamber and the portion. The magnet valve blocks the passage with the valve body when energized, to control timing, with which fluid in the chamber starts to be pressurized by the plunger. Dynamic pressure of fluid flowing from the chamber into the passage is applied to the valve body in a direction in which the valve body closes the passage. The valve body includes an inclined surface at a portion of the valve body, to which the dynamic pressure is applied. The surface is nonparallel to a plane, which is perpendicular to a displacement direction of the valve body. | 05-07-2009 |
20100068084 | MODULAR COMPRESSOR-VALVE DESIGN FOR REFRIGERANT SYSTEM - A compressor-valve modular design provides manufacturing simplicity, reduces applied cost, and improves quality and reliability of a refrigerant system. In this design, a valve is preferably an electronically controlled valve having a control member that controls the flow of a fluid through the valve. A discharge valve, a stepper motor modulation valve, an economizer vapor injection valve, a liquid injection valve or any combination of thereof are the examples of the valves within the compressor-valve subassembly. | 03-18-2010 |
20100074782 | High pressure pump having plunger - A high pressure pump draws fluid from a fluid inlet into a compression chamber through an inlet chamber. The high pressure pump has a fluid chamber that communicates with the fluid inlet via the inlet chamber. The high pressure pump includes a plunger and a cylinder. The plunger draws fluid from the inlet chamber into the compression chamber when the plunger moves in a drawing direction. The plunger is capable of pressurizing fluid in the compression chamber when the plunger moves in a pressurizing direction. The cylinder movably supports the plunger therein. When the plunger moves in the drawing direction, fluid in the inlet chamber is drawn into the compression chamber, so that fluid flows from the fluid chamber into the inlet chamber. | 03-25-2010 |
20100074783 | High pressure pump having plunger - A high pressure pump draws fluid from a fluid inlet into a compression chamber through an inlet chamber. The high pressure pump has a fluid chamber that communicates with the fluid inlet via the inlet chamber. The high pressure pump includes a plunger and a cylinder. The plunger draws fluid from the inlet chamber into the compression chamber when the plunger moves in a drawing direction. The plunger is capable of pressurizing fluid in the compression chamber when the plunger moves in a pressurizing direction. The cylinder movably supports the plunger therein. When the plunger moves in the drawing direction, fluid in the inlet chamber is drawn into the compression chamber, so that fluid flows from the fluid chamber into the inlet chamber. | 03-25-2010 |
20100111734 | Electromagnetically-Driven Valve Mechanism and High-Pressure Fuel Supply Pump Using the Same - In a conventional configuration, a lead line weld joined portion | 05-06-2010 |
20100143171 | CONTROL DEVICE FOR A HYDRAULIC PISTON MACHINE WITH A VARIABLE FLOW RATE - The invention relates to a control device for a hydraulic piston machine which can be embodied as a hydropump or a hydromotor and the time-averaged volume flow of which is variable. The piston machine comprises a plurality of pistons, each delimiting a working chamber the volume of which varies with the stroke of a piston and which can be connected to a high pressure port via a first valve and to a low pressure port via a second valve. At least one of the two valves of a working chamber can be actively electrically actuated. The control device comprises an electronic control unit which operates the actively actuated valves of the working chambers in a partial stroke mode, in which only a varying portion of the piston stroke is utilized. In order to reduce the control complexity, the actively actuated valves can be operated in not more than two different modes, namely either only in the partial stroke mode or in the partial stroke mode and an idle stroke mode or in the partial stroke mode and a complete stroke mode or all three modes can only be applied to a limited number of working chambers and only the idle stroke mode and the complete stroke mode to the remaining working chambers. | 06-10-2010 |
20100166584 | HIGH PRESSURE PUMP - A volume chamber is formed by a valve member, an inner peripheral wall of a tubular portion and a bottom portion of a stopper when the valve member is engaged with tubular portion. A communication passage communicates between the volume chamber and one of an intermediate passage of a valve body and a tertiary passage of the stopper. The communication passage is formed at a location, which is spaced from a contact surface between the tubular portion and the valve member by a first predetermined distance and is also spaced from a contact surface between the bottom portion and the first urging member by a second predetermined distance. | 07-01-2010 |
20100189581 | UNLOADER SYSTEM AND METHOD FOR A COMPRESSOR - An apparatus is provided and may include a compression mechanism, a valve plate including a plurality of ports in fluid communication with the compression mechanism, and a header disposed adjacent to the valve plate. A plurality of cylinders may be disposed within the header and a plurality of pistons may be respectively disposed in the plurality of cylinders and may be movable between a first position separated from the valve plate and a second position engaging the valve plate. A chamber may be disposed within each of the cylinders and may receive a pressurized fluid in a first mode to move the piston into the second position and may vent the pressurized fluid in a second mode to move the piston into the first position. One of the chambers may include a smaller volume than the other of the chambers. | 07-29-2010 |
20100303657 | OPERATING METHOD FOR FLUID WORKING MACHINE - A fluid working machine ( | 12-02-2010 |
20110020159 | FLUID WORKING MACHINE - In usual hydraulic pumps, a separate assembly opening is provided for every valve of the hydraulic pump. This design causes sealing problems. It is proposed, that the fluid inlet valve ( | 01-27-2011 |
20110070113 | SYSTEM AND DEVICES INCLUDING VALVES COUPLED TO ELECTRIC DEVICES AND METHODS OF MAKING, USING, AND OPERATING THE SAME - Systems, methods, and devices are disclosed, including a compressor having a piston and a valve assembly. In some embodiments, the valve assembly includes a check valve having a valve member, a magnet coupled to the valve member, and an electrical conductor near the magnet. The check valve may be configured to change state in response to a change in fluid pressure. The compressor may also have an electric device coupled to the electrical conductor. | 03-24-2011 |
20110097228 | High-Pressure Fuel Supply Pump and Fuel Supply System - The present invention relates to a high-pressure fuel supply pump comprising a compression chamber, a plunger reciprocating in the compression chamber for pressurizing fuel in the compression chamber, a discharge valve for discharging pressurized fuel from the compression chamber to a high-pressure fuel passage of a high-pressure fuel supply system for supplying high-pressure fuel to an internal combustion engine, and a first solenoid actuated valve for connecting and disconnecting a first low-pressure fuel passage and the compression chamber, wherein the first solenoid actuated valve is biased by a first biasing member in a closing direction of the first solenoid actuated valve, and the first solenoid actuated valve is opened or kept open against the biasing force of the first biasing member, when the first solenoid actuated valve is energized. The high pressure fuel supply pump further comprises a second solenoid actuated valve for connecting and disconnecting a second low-pressure fuel passage and the compression chamber. | 04-28-2011 |
20120093670 | High-Pressure Fuel Supply Pump Having Electromagnetically-Driven Intake Valve - The present invention eliminates a valve holder and accommodates a valve guide in a small space provided between a valve seat and a peripheral surface part of a pressure chamber to reduce the size of a pump. The valve guide guides a stroke of the valve and is provided inside the valve seat. The valve includes an annular abutting surface that abuts a valve seat formed in a valve housing to shut off a fuel intake passage and a bottomed cylindrical part is provided at an inner peripheral part of the annular abutting surface. The bottomed cylindrical part is inserted into a fuel introduction hole formed in the valve housing inside the valve seat. A member having a cylindrical surface part that supports a reciprocating motion of the valve, is fixed to the valve housing, face-to-face with an inner peripheral part of the bottomed cylindrical part. | 04-19-2012 |
20120251367 | PUMP PRESSURE CONTROL VALVE WITH SHOCK REDUCTION FEATURES - A pump includes a pump casing defining a first chamber and a second chamber, and fluid moves from the first chamber to the second chamber during a stroke. The pump also includes a needle that is movably disposed in the first chamber and a valve carriage that is movably disposed in the second chamber. The valve carriage includes an internal stop, and the valve carriage also includes a cavity therein that is partially defined by the internal stop. The pump further includes a valve that is movably disposed within the cavity of the valve carriage, and the valve is operable to be impacted by the needle during the stroke. Also, the needle is operable to impact the valve carriage during the stroke. Moreover, the valve is operable to impact the internal stop during the stroke at a time different from the needle impacting the valve carriage. | 10-04-2012 |
20120301340 | ELECTROMAGNETIC FLOW RATE CONTROL VALVE AND HIGH-PRESSURE FUEL SUPPLY PUMP USING THE SAME - High-response and high-power electromagnetically driven flow rate control valve with flange portion forming an attracting surface on an anchor, a first peripheral surface portion having a diameter smaller than the flange portion, and a cylindrical non-magnetic area opposing an outer peripheral surface of the flange portion with a third clearance interposed therebetween are provided, and a first fluid trap portion communicating with the back pressure chamber via the third clearance is provided. When the diameter of the flange portion is enlarged in order to enlarge the cross-sectional area of the attracting surface, fuel that is displaced by the anchor is increased, but is partly absorbed in the first fluid trap portion, so that the fuel passing through the fuel channel does not increase in comparison with fuel before the diameter of the flange portion is enlarged. Accordingly, the cross-sectional area of the attracting surface may be enlarged. | 11-29-2012 |
20140241924 | ELECTROMAGNETIC VALVE AND HIGH PRESSURE PUMP USING THE SAME - An electromagnetic body has a movable core reciprocatably movable within a movable core chamber. The movable core has through holes and a fitting hole that pass through the movable core in a direction of movement of the movable core. A stator core facing the movable core defines the movable core chamber together with the electromagnetic body. A valve stem is fixed into the fitting hole and has a fluid chamber recessed from a first end surface facing the stator core. Air bubbles generated in a gap can be guided into the fluid chamber and collapse by flow of the fuel flowing into the fluid chamber from the through holes through the gap. | 08-28-2014 |
20140377109 | HIGH-PRESSURE FUEL SUPPLY PUMP INCLUDING AN ELECTROMAGNETICALLY DRIVEN INTAKE VALVE - A high-pressure fuel supply pump including an electromagnetically driven intake valve is configured such that a pressure equalizing hole is provided in the valve stopper positioned between the valve and a pressurizing chamber. The pressure equalization hole connects a spring storage space, provided between a valve and a valve stopper, with a surrounding fluid passage. The high-pressure fuel supply pump is further configured such that an opening of the pressure equalizing hole at the spring storage chamber side is open at a position at the inner side of a diameter of the spring. Since the pressure in the pressurizing chamber can be introduced into the inner side of the spring without traversing the spring, the unstable behavior of the spring or the valve due to the introduced pressure eliminated. Since the force applied to the valve when the valve closes is stabilized, the closing timing of the valve is stable. | 12-25-2014 |
20150017039 | HIGH-PRESSURE FUEL SUPPLY PUMP HAVING AN ELECTROMAGNETICALLY-DRIVEN INLET VALVE - A high-pressure fuel supply pump having a normally-closed type electromagnetically-driven inlet valve mechanism supporting a large capacity and causing least sound is provided. A valve member having a seat surface that comes into abutment with an inlet valve seat; and a plunger rod positioned on the seat surface side of the valve member and configured to operate the valve member by a magnetic attraction force are provided, and a protector configured to face a surface of the valve member on the surface opposite to the seat surface with a gap therebetween when the plunger rod makes a full stroke in the valve-open direction of the valve member and an anchor for driving the plunger rod comes into contact with a stopper is provided. | 01-15-2015 |
20150044080 | RECIPROCATING COMPRESSOR HAVING CAPACITY REGULATION - A shutoff valve ( | 02-12-2015 |
20150292492 | PISTON PUMP ASSEMBLY OF ELECTRONIC CONTROLLED BRAKE DEVICE FOR VEHICLE - A piston pump assembly of an electronic controlled brake device for a vehicle includes: an inlet housing configured to accommodate a reciprocating piston and elastically support the piston; an outlet housing configured to accommodate the inlet housing and form a working chamber that allows a working fluid to be introduced from the inlet housing; an outlet ball valve accommodated in the working chamber to open and close a flow passage of the working fluid that is introduced from the inlet housing to the outlet housing; an outlet spring accommodated in the working chamber to elastically support the outlet ball valve toward the inlet housing; and a damper accommodated in the working chamber and mounted within the outlet spring to allow shape deformation while contacting the outlet ball valve. When the outlet ball valve is pushed and pressed toward an end of the working chamber, the damper generates viscous damping while discharging the accommodated working fluid into the working chamber. Accordingly, it is possible to actively reduce noise or vibration upon initial operation of the electronic controlled brake device or in a low frequency section, thereby improving ride comfort. | 10-15-2015 |
20160061197 | THERMAL-OPERATED PUMP - A thermal operated fluid pump has a plunger which is moved by a thermally expandable element to compress a fluid, such as natural gas, into a storage cylinder. | 03-03-2016 |
20160069333 | HIGH-PRESSURE PUMP - Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly. | 03-10-2016 |
20160153414 | HIGH-PRESSURE PUMP | 06-02-2016 |
20160186707 | CONTROL DEVICE FOR HIGH-PRESSURE PUMP - A high-pressure pump includes a plunger reciprocating in conjunction with rotation of a rotational shaft to be able to change a volume of a pressurizing chamber and a control valve having a first valve body and a second valve body disposed in a fuel suction passage that communicates with the pressurizing chamber and supplies/blocks fuel to/from the pressurizing chamber by displacing the valve body in an axial direction by switching between energization and non-energization of a coil. An ECU adjusts a fuel discharge amount of the high-pressure pump by switching a valve opening and a valve closing of the control valve by the energization control of the coil. The ECU detects movement of the valve body with respect to a drive command of the valve opening or the valve closing of the control valve and executes an actuation determination of the high-pressure pump on the basis of a detection result. | 06-30-2016 |