| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 261 | Variable vane displacement pump utilizing a control valve and a switching valve | US15290394 | 2016-10-11 | US10060433B2 | 2018-08-28 | Koji Saga |
| A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. | ||||||
| 262 | Method of operating a pumping system | US14569170 | 2014-12-12 | US09903378B2 | 2018-02-27 | Simon Harold Bruce |
| A pumping system for evacuating an enclosure comprises a pumping mechanism (30), a motor (32) for driving the pumping mechanism, and a controller (36) for controlling the motor. The controller sets a maximum value for a rotational frequency of the motor and a maximum value for a current in the motor, and, to optimise the performance of the pumping system, independently adjusts the maximum values during evacuation of the enclosure. | ||||||
| 263 | RELIEF DEVICE OF OIL CIRCUIT OF ENGINE | US15316116 | 2015-06-23 | US20170114682A1 | 2017-04-27 | Junichi MIYAJIMA; Takatoshi WATANABE; Yuya KATO |
| [Problem] To provide a relief device for an oil circuit of an engine provided with an oil pressure relief valve and a temperature-sensitive relief valve, with which it is possible for oil to be relieved (expelled) at the intended pressure regardless of the oil temperature, and with which it is possible to simplify the configuration. [Solution] The relief device comprises an oil pump (9), an upstream channel (61) provided from a discharge side of the oil pump (9) to an engine (E), an oil pressure relief valve (A) for relieving oil due to the valve body being moved by oil pressure, and a temperature-sensitive relief valve (B) for relieving oil by sensing the oil temperature and continuously opening and closing. The oil pressure relief valve (A) and the temperature-sensitive relief valve (B) are arranged in parallel in the upstream channel (61). | ||||||
| 264 | System and method for monitoring and control of cavitation in positive displacement pumps | US13432625 | 2012-03-28 | US09546652B2 | 2017-01-17 | Dan Yin |
| A system and method are disclosed for monitoring and controlling a positive displacement pump using readings obtained from a plurality of pressure sensors. The pressure sensors may be mounted at the suction, discharge and interstage regions of the pump. Signals from the pressure sensors are compared to obtain a ratio that is used to predict whether a cavitation condition exists within the pump. The ratio can be compared to user provided limits to change an operating characteristic of the pump to reduce predicted cavitation. The pump may be stopped, or pump speed changed, when the ratio is less than a predetermined value. In some embodiments, historical information regarding the ratio may be used to obtain standard deviation information which may then be used to predict whether gas bubbles are passing through the pump. Other embodiments are described and claimed. | ||||||
| 265 | ELECTRIC COMPRESSOR AND METHOD FOR CONTROLLING SAME | US14910282 | 2015-04-10 | US20160370038A1 | 2016-12-22 | Jeong Gil Heo; Soo Cheol Jeong; Gun Woong Park; Chan Ho Baek; Jae Sik Son |
| An electric compressor and a method of controlling the same, the electric compressor including a detection unit for detecting a phase of refrigerant in the electric compressor, a connection unit wound at a position adjacent to a passage of a housing for movement of a refrigerant in the electric compressor, and a control unit for performing control according to the phase of refrigerant by differently controlling power applied to the connection unit in response to data detected by the detection unit. The method including aligning a position of a rotor after an electric compressor is turned on, determining whether a refrigerant is in liquid phase or in gas phase, preheating the refrigerant by applying power to the electric compressor according to the phase of refrigerant, and controlling the electric compressor such that the electric compressor is normally operated after the refrigerant is preheated. | ||||||
| 266 | Operation control device for limiting the amount a positive displacement pump over-or undershoots a target operating parameter value, pump system and method for operating such | US13520385 | 2011-02-10 | US09404482B2 | 2016-08-02 | Stefan Werner; Michael Jackle; Christian Hopf |
| An operational control device is disclosed for a positive-displacement pump having a motor, means for actuating the motor, state sensor means for detecting an actual operating parameter (e.g., pressure) of the pump, and operating mode means for controlling an operating mode of the pump. A first actuating mode of the operating mode means is set by the actuating means below a first operating-parameter threshold value (P1). This mode brings about a constantly rising pump pressure in the direction of an operating-parameter setpoint value (Pset) in a variable manner, which is dependent on a detected change in the operating parameter over a predefined time interval. A second actuating mode is set as normal operation to the operating-parameter setpoint value by the actuating means above the first operating-parameter threshold value. P1 is fixed or is calculated as a fraction of the operating-parameter setpoint value and/or a pump parameter correlated therewith. | ||||||
| 267 | Variable displacement lubricant pump | US13582460 | 2010-03-05 | US09017041B2 | 2015-04-28 | Carmine Cuneo; Giacomo Armenio |
| A variable displacement lubricant pump includes a first plunger which pushes a shiftable control ring into a high pumping volume direction. A pump rotor comprises radially slidable vanes which rotate in the control ring. A pressure control system comprises a first pressure control chamber wherein a first plunger is axially moveable. A first pressure conduit connects a pump outlet port with the first pressure control chamber. A first pressure control valve controls a pressure in the first pressure control chamber. A second pressure control valve between an outlet opening in a side wall of the first pressure control chamber and a low pressure source controls the outlet opening and is a centrifugal valve mechanically connected with the pump rotor which closes at a high rotational speed of the pump rotor. The outlet opening is closed by the first plunger in a low pumping volume position and opened in a high pumping volume position. | ||||||
| 268 | Method for calculating the probability of moisture build-up in a compressor | US13114173 | 2011-05-24 | US08849604B2 | 2014-09-30 | David F. Rowe, Jr. |
| A method for calculating the probability of moisture build-up in a compressor includes the steps of sensing a temperature of the ambient air, sensing a discharge pressure of the compressor, sensing a temperature of the compressor, processing the ambient air temperature and operating pressure sensed to obtain a required temperature at which condensation will form, and comparing the temperature of the compressor to the required temperature. | ||||||
| 269 | VARIABLE DISPLACEMENT PUMP | US14073347 | 2013-11-06 | US20140147322A1 | 2014-05-29 | Koji SAGA |
| A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. | ||||||
| 270 | COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD | US13932611 | 2013-07-01 | US20130294933A1 | 2013-11-07 | Hung M. Pham |
| A system is provided and may include a compressor operable in a refrigeration circuit. A first sensor may detect high-side data indicative of an operating condition of a high-pressure side of the refrigeration circuit and a second sensor may detect low-side data indicative of an operating condition of a low-pressure side of the refrigeration circuit. Processing circuitry may receive the high-side data and the low-side data from the first and second sensors and may process the high-side data and low-side data to determine at least one of a low-side fault and a high-side fault. The processing circuitry may operate the compressor in a normal mode in the absence of a low-side fault and a high-side fault and may operate the compressor in a reduced-capacity mode or a shutdown mode based on a severity of the at least one of the low-side fault and the high-side fault. | ||||||
| 271 | VEHICULAR POWER TRANSMITTING SYSTEM | US13808744 | 2011-06-30 | US20130170953A1 | 2013-07-04 | Yusuke Ogata; Yoshihiro Mizuno; Haruhiko Shibata; Hidenobu Yamaguchi; Fumitake Suzuki; Masahiko Suzuki; Masashi Hattori; Naoki Okoshi; Kenichi Mori; Masahiro Ito |
| A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced. | ||||||
| 272 | Compressor diagnostic and protection system and method | US13030549 | 2011-02-18 | US08474278B2 | 2013-07-02 | Hung M. Pham |
| A method is provided and may include generating a high-side signal indicative of an operating condition of a high-pressure side of a refrigeration circuit and generating a low-side signal indicative of an operating condition of a low-pressure side of the refrigeration circuit. The method may further include processing by a processor the high-side signal and the low-side signal to determine a non-measured system condition and determining by the processor an efficiency of the refrigeration circuit based on the non-measured system condition. | ||||||
| 273 | Start-up control device and method for electric scroll compressor | US12602449 | 2008-05-21 | US08342810B2 | 2013-01-01 | Shigeyuki Koyama |
| A device executing a start-up control method for an electric scroll compressor has a thermistor (18) and a pressure sensor (20) which, prior to the start-up of the scroll compression unit, detect temperature and pressure of a suction refrigerant introduced into the compression unit (2), and a controller (10) for controlling driving of a motor (4) of the compression unit (2) at the start-up of the compressor. The controller (10) determines at the start-up of the compressor whether or not a liquid refrigerant exists in the compression unit (2) on the basis of the detected temperature and pressure; selects either a normal start-up mode or a liquid-discharge mode in which the rotational speed of the motor (4) is regulated to be lower than in the normal start-up mode, according to the determination result; and controls the start-up of the compression unit (2) through the motor (4) according to the selected mode. | ||||||
| 274 | METHOD FOR CALCULATING THE PROBABILITY OF MOISTURE BUILD-UP IN A COMPRESSOR | US13114173 | 2011-05-24 | US20120303311A1 | 2012-11-29 | David F. Rowe, JR. |
| A method for calculating the probability of moisture build-up in a compressor includes the steps of sensing a temperature of the ambient air, sensing a discharge pressure of the compressor, sensing a temperature of the compressor, processing the ambient air temperature and operating pressure sensed to obtain a required temperature at which condensation will form, and comparing the temperature of the compressor to the required temperature. | ||||||
| 275 | DOUBLE VACUUM PUMP APPARATUS, GAS PURIFICATION SYSTEM PROVIDED WITH DOUBLE VACUUM PUMP APPARATUS, AND EXHAUST GAS VIBRATION SUPPRESSING DEVICE IN DOUBLE VACUUM PUMP APPARATUS | US13518257 | 2010-12-22 | US20120255445A1 | 2012-10-11 | Kazuo Haruna; Kiyokazu Maruta; Hidenori Kuwata; Koichi Shima |
| A double vacuum pump apparatus (Y2) includes positive displacement vacuum pumps (40A, 40B) and lines (52, 60). Each of the vacuum pumps includes a suction port (41) and a discharge port (42), and a pressure detector (80) is provided in the vicinity of the suction port (41) of the double vacuum pump apparatus (Y2). The line (52) connects the discharge port (42) of the vacuum pump (40A) to the suction port (41) of the vacuum pump (40B). The line (60) has an end (E6) and an end (E5) that are connected to the connection line (52), and includes a buffer tube (Z1) and an on-off valve (61) located between the tube (Z1) and the end (E5). A pressure detection signal from the pressure detector (80) is used as an on/off signal for the on-off valve (61). | ||||||
| 276 | Control System and Method for Pump Output Pressure Control | US13524490 | 2012-06-15 | US20120251342A1 | 2012-10-04 | David R. Shulver; Matthew Williamson; Adrian C. Cioc |
| A pump system includes pump having a control feature which, responsive to a supply of pressurized working fluid, reduces the pressure of the working fluid pressurized by the pump. The control feature is connected to the output of the pump by a regulating valve. The control feature receives pressurized working fluid to decrease the output of the pump in response to the pressure of the supplied working fluid. A regulating valve selectively connects the pressurized working fluid to the control feature. The regulating valve has a control port to receive pressurized working fluid from the pump to urge the valve to a closed position against a biasing force. A controllable valve is operable to interrupt the supply of pressurized working fluid to control port to alter the output pressure of the pump. | ||||||
| 277 | Thermally efficient multiple stage gear pump | US12931830 | 2011-02-11 | US20120207626A1 | 2012-08-16 | William H. Dalton |
| A multiple stage pump for delivering fuel to an engine is disclosed which includes a pump housing, a boost stage operable at engine start to draw fuel into the pump housing at a boost stage pressure, a first pumping stage operable upon engine start for receiving fuel from the boost stage and delivering the fuel from the pump housing to a fuel metering unit, a second pumping stage operable upon engine start and during engine cruise operation for receiving fuel from the boost stage and delivering the fuel from the pump housing to said fuel metering unit, and a switching valve in fluid communication with the first and second pumping stages, and configured to control fuel flow through the first pumping stage in dependence on changes in boost stage conditions such as pressure or shaft speed. | ||||||
| 278 | Slide valve actuation for overpressure safety | US12294116 | 2006-06-02 | US08206132B2 | 2012-06-26 | Steven J. Holden |
| A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A piston (124) is in a cylinder (128) and mechanically coupled to the valve element. A control valve (140) is coupled to a headspace (138) of the cylinder to selectively expose the headspace to a flu source (144), pressure of fluid in the headspace producing a force on the piston and valve element in a direction from the second condition toward the first condition. The compressor includes a pressure relief valve coupling (180) in the headspace to suction conditions to unload the compressor responsive to an overpressure. | ||||||
| 279 | Control system and method for pump output pressure control | US12442735 | 2007-09-26 | US08202061B2 | 2012-06-19 | David R. Shulver; Matthew Williamson; Adrian C. Cioc |
| A pump system includes pump having a control feature which, responsive to a supply of pressurized working fluid, reduces the pressure of the working fluid pressurized by the pump. The control feature is connected to the output of the pump by a regulating valve. The control feature receives pressurized working fluid to decrease the output of the pump in response to the pressure of the supplied working fluid. A regulating valve selectively connects the pressurized working fluid to the control feature. The regulating valve has a control port to receive pressurized working fluid from the pump to urge the valve to a closed position against a biasing force. A controllable valve is operable to interrupt the supply of pressurized working fluid to control port to alter the output pressure of the pump. | ||||||
| 280 | Rotary vane engines with movable rotors, and engine systems comprising same | US12342993 | 2008-12-23 | US08156919B2 | 2012-04-17 | David S. Darrow |
| Embodiments of rotary vane engines include rotors that rotate about an axis of rotation. The rotors can be moved in directions substantially perpendicular to the axis of rotation to vary expansion and/or compression ratios of the rotary vane engines. The ability to vary the expansion and/or compression ratios can facilitate optimization of the performance of the rotary vane engines as operating conditions vary. | ||||||
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