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8177522 |
Mode changing apparatus for a scroll compressor
A mode changing apparatus for a scroll compressor is provided that may include a low-pressure passage that communicates with a suction side formed by an orbiting motion of an orbiting scroll, an...
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8172551 |
Variable actuation pressure system for independent pressure control
A pump arrangement and method of regulating pressure of a pump arrangement are provided. The pump arrangement includes an actuation pump, a pressure regulating valve, and a control valve. The...
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8136508 |
Selective displacement control of multi-plunger fuel pump
A pump for a combustion engine is disclosed. The pump may have at least one pumping member movable through a plurality of displacement strokes during a single engine cycle. The pump may also have a...
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8015964 |
Selective displacement control of multi-plunger fuel pump
A pump for a combustion engine is disclosed. The pump may have at least one pumping member movable through a plurality of displacement strokes during a single engine cycle. The pump may also have a...
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7985054 |
Multicylindrical rotary compressor, compression system, and freezing device using the compression system
In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which...
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7976287 |
Capacity variable type twin rotary compressor and driving method thereof
A capacity variable type twin rotary compressor may include a casing, a motor, a first cylinder having a first compression space, a second cylinder fixed to one side of the first cylinder and...
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7955062 |
Vane pump
A vane pump for pumping hydraulic fluid wherein fluid at a pressure intermediate the inlet pressure and the outlet pressure of the pump is supplied to under vane passages of the vanes located in...
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7891955 |
Compressor having a dual slide valve assembly
A compressor having a dual slide valve assembly is disclosed. The slide valve assembly includes: i) a volume slide valve mechanism that is slidably movable to control compressor volume ratio and...
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7887302 |
High pressure variable displacement piston pump
A variable flow pump includes: a housing with inlet and outlet chambers interconnected by a main bore and a non-rotating cylinder block positioned in the main bore. The cylinder block includes: a...
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7861582 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7841838 |
Rotary closed type compressor and refrigerating cycle apparatus
A rotary closed type compressor is configured such that an inside of a case becomes high pressure, and the rotary closed type compressor comprises a first cylinder and a second cylinder having...
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7841839 |
Displacement control structure for a variable displacement compressor
A variable displacement compressor includes a housing assembly. A displacement control structure for the variable displacement compressor includes a passage forming member, a flat partition and a...
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7824160 |
Scroll compressor and refrigerating apparatus
A scroll back pressure chamber in a scroll compressor is composed of a space 111 filled with suction pressure (or intermediate pressure) and a space filled with discharge pressure, and the...
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7806666 |
Displacement control valve of variable displacement compressor
A displacement control valve (32) is connected to a variable displacement compressor. An open passage (53) in which a refrigerant gas flows is formed within a rod (31) and a valve body (30) of the...
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7798282 |
Power assisted steering system
A hybrid electrical power assist system (EPAS) for an automotive vehicle that utilizes the advantages of a conventional EPAS system to provide power assist based upon several distinct sensor...
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7785083 |
Dynamic fluid device
The dynamic fluid device has a first pumping arrangement and second pumping arrangement arranged in parallel with each other to pump a pressurized fluid to user devices; at least a distributor...
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7775782 |
Variable capacity rotary compressor having vane controller
A variable capacity rotary compressor capable of reducing collision noise of a vane with a roller. The variable capacity rotary compressor includes a vane controller controlling the operation of a...
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7762788 |
Fluid conveyance system and fluid conveyance device
A fluid conveyance system includes: a fluid conveyance device including a micro pump module which compresses a flexible tube communicating with a fluid containing receptacle and discharges a fluid,...
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7726948 |
Hydraulic pump with variable flow and variable pressure and electric control
A pump system including a control system for controlling a variable flow pump for controlling oil flow and oil pressure in a hydraulic circuit in an engine. The system includes a pump member, an...
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7726285 |
Diesel engine and supercharger
A four stroke diesel engine combined with a supercharger is operable to supply varying amounts of air to the engine responsive to the load on the engine. The supercharger has a pair of rotors...
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7704054 |
Two-stage rotodynamic blood pump
A pump (10) includes a housing, a stator (20) supported in the housing, and a rotor assembly (30). The rotor assembly (30) includes a rotor (32) supported in the housing for rotation relative to...
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7611341 |
Capacity varying type rotary compressor
A capacity varying rotary compressor is provided. The compressor includes a casing that maintains a discharge pressure state, a motor installed in the casing that generates a driving force, one or...
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7566204 |
Multicylindrical rotary compressor, compression system, and freezing device using the compression system
In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which...
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7547202 |
Scroll compressor with capacity modulation
A scroll compressor may include a shell, a compression mechanism, and a sealing apparatus. The compression mechanism may be contained within the shell and include a compression member. The...
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7546184 |
Locomotive engine restart shutdown override system and method
A system for overriding an EMD locomotive engine protective device which includes a low water pressure sensing device in communication with the engine cooling system for shutting down the engine...
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7497116 |
Flow rate estimation method of blood pump
In a flow rate estimation method of a blood pump, a general flow rate estimation formula which includes a correction term is formed based on a plurality of blood pumps. Measured data obtained from...
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7419365 |
Compressor with capacity control
A compressor includes an orbiting member and a non-orbiting member mounted relative the orbiting member to define first and second chambers disposed between the orbiting and non-orbiting members....
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7396214 |
Variable displacement pump and control therefor
A control system for a variable displacement pump. The control system is operably associated with an engine control unit for passively or actively controlling the output of the pump in response to...
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7371053 |
Two-stage hydraulic pump
A two-stage hydraulic pump includes a rotor, a ring, and a plurality of rollers disposed in slots formed on the rotor. The pump has two inlet ports and two outlet ports, which are disposed inwardly...
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7293965 |
Limiter device for variable displacement compressor
A limiter device is provided in a variable displacement compressor capable of varying a discharge displacement per revolution and compressing a fluid in a cycle. The limiter device includes an...
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7226273 |
Method of generating compressed air, and compressor arrangement for implementing the method
Method and compressor arrangement for generating compressed air, particularly for commercial vehicles, which is generated by way of a compressor unit (3) driven by an internal-combustion engine (1)...
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7074013 |
Dual volume-ratio scroll machine
The present invention provides the art with a scroll machine which has a plurality of built-in volume ratios along with their respective design pressure ratios. The incorporation of more than one...
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7070399 |
Variable displacement pump with a suction area groove for pushing out rotor vanes
A variable displacement pump has a cam ring, a rotor, a plurality of vanes, a pressure plate and a rear body. The cam ring is accommodated within a pump body. The rotor rotates within the cam ring....
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7048515 |
Hydraulic drive system and method using a fuel injection control unit
A fuel injection control unit, including an electronic governor and a controller for an engine performs control in a governor region based on an isochronous characteristic. A working machine...
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7028659 |
Method for adjusting a volumetric flow-variable positive displacement pump in an internal combustion engine
The invention relates to a method for adjusting a volumetric flow-variable positive displacement pump in an internal combustion engine involving the following method steps: operating the positive...
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6962485 |
Constant bypass flow controller for a variable displacement pump
A fuel metering unit for controlling a variable displacement pump including a main metering valve in fluid communication with the pump for metering an output of the pump, a pressure regulator in...
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6953325 |
Safety device to limit pressure in an axial-piston compressor housing
A safety device limits the pressure in an axial-piston compressor with variable piston displacement. The compressor has as wobble plate or swash plate whose tilt angle can be variably controlled by...
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6910344 |
Compressor torque estimate device, engine controller and method of estimating compressor torque
A compressor torque estimate device is used for a variable displacement compressor whose displacement is variable based on a compressor control signal for estimating a compressor torque of the...
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6821092 |
Capacity modulated scroll compressor
A scroll compressor has a biasing chamber which contains a pressurized fluid. The pressurized fluid within the chamber biases the two scroll members together. A valve assembly is in communication...
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6736604 |
Control apparatus of variable displacement pump for power steering apparatus
First and second fluid pressure chambers are formed in both sides of a movement direction of a cam ring swingably placed within a pump body. A spool of a control valve is moved due to a pressure...
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6709244 |
Diagnostic system for a compressor
A scroll type machine incorporates a unique system for monitoring the status of a valve which is used to control the capacity of the compressor. The valve functions to open and close a fluid...
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6688851 |
Oil pump for controlling planetary system torque
This invention provides the use of a pump to regulate torque in a planetary gear system. The pump is provided with a moveable piston as an end plate. An actuator, attached to the piston, controls...
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6672844 |
Apparatus and method for controlling variable displacement compressor
A variable displacement compressor has a control valve for controlling the displacement of the compressor. When the pressure in a discharge chamber of the compressor (discharge pressure) is equal...
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6663350 |
Self generating lift cryogenic pump for mobile LNG fuel supply system
A high pressure pump and delivery system mating to LNG storage and suited for natural gas powered trucks and buses, but also suitable for other cryogenic liquid fuels. The reciprocating pump is...
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6623247 |
Method and apparatus for controlling a variable displacement hydraulic pump
A method and apparatus for controlling a variable displacement hydraulic pump having a swashplate pivotally attached to the pump. The method and apparatus includes determining a desired swashplate...
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6619928 |
Variable displacement pump
A cam ring 10 is slidably supported within a pump body 2, and a rotor 20 is rotatably disposed inside the cam ring. The cam ring is eccentric to a rotation shaft 22 of the rotor. The rotor carries...
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6604913 |
Vane pump
In a vane pump, a bottom surface of a suction side low pressure passage is set to be below a bottom surface of a return passage of a flow control valve in a cross portion between the return passage...
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6575710 |
Compressor with blocked suction capacity modulation
A capacity control system has a valve which closes off the inlet to one or more of the cylinders in a multicylinder compressor. The valve is motivated by fluid at discharge pressure which reacts...
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6572341 |
Variable displacement type compressor with suction control valve
A variable displacement type compressor has a tiltable swash plate and pistons in cylinder bores. The displacement of the compressor is controlled by changing an inclination angle of the swash...
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6558132 |
Variable displacement pump
A variable displacement vane pump comprises a pump body having inlet and outlet ports, a rotor driven by a drive shaft and co-axially aligned therewith, a plurality of radially extending vanes...
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