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1
DE60123305T2
Publication/Patent Number: DE60123305T2
Publication date: 2007-08-23
Application number: 60123305
Filing date: 2001-02-22
2
DE60120802T2
Publication/Patent Number: DE60120802T2
Publication date: 2006-11-30
Application number: 60120802
Filing date: 2001-02-16
3
DE60120802D1
Publication/Patent Number: DE60120802D1
Publication date: 2006-08-03
Application number: 60120802
Filing date: 2001-02-16
4
DE60113168T2
Publication/Patent Number: DE60113168T2
Publication date: 2006-01-19
Application number: 60113168
Filing date: 2001-02-20
5
EP1126186B1
Publication/Patent Number: EP1126186B1
Publication date: 2006-06-21
Application number: 01200547.6
Filing date: 2001-02-16
Abstract: An improved modular, radially-compliant, redundantly-sealing journal-type bearing assembly 54,89,91 comprising two bearing elements 56,58 retained in a housing 60and positively loaded in opposing directions by a compression spring 74 disposed therebetween. A shaft 22 to be supported and sealed against leakage by the bearing, such as a valve pintle shaft, is disposed in an axial bore 62 in each of the bearing elements, which bores are fitted as closely to the diameter of the shaft as is possible without causing the shaft to bind in the bores. Each of the radial bearing faces 86 opposite the spring forms a seal with a corresponding internal surface 88 of the housing, defining thereby a redundant sealing system. The bearings are radially compliant within the housing by a predetermined small distance 66 to allow the shaft to be operatively self-centered, such as by an attached valve head mating into a valve seat. The improved bearing assembly may be pre-assembled offline to facilitate its incorporation into an apparatus, for example, a fuel cell valve, and may also be retrofitted into existing apparatus, for example, an exhaust gas recirculation valve. An improved modular, radially-compliant, redundantly-sealing journal-type bearing assembly 54,89,91 comprising two bearing elements 56,58 retained in a housing 60and positively loaded in opposing directions by a compression spring 74 disposed therebetween. A shaft 22 to be ...more ...less
6
EP1130245B1
Publication/Patent Number: EP1130245B1
Publication date: 2006-09-27
Application number: 01200648.2
Filing date: 2001-02-22
Abstract: A shield 56 for a gas management pintle valve 10, such as an exhaust gas recirculation valve for an internal combustion engine, for mitigating leakage of gas and moisture along the valve pintle 22 into the actuator 30, to prevent corrosion and failure of the actuator. The shield 56 is a tubular member 58,60 having an equatorial radial flange 62 and is slidably mounted on the pintle 22 in an annular chamber 54 between the valve body and the actuator. The inner diameter of the tube is selected to be as close-fitting to the pintle as possible while still being slidable thereupon to be adapted to either of two operating positions. During engine shutdowns, the shield is drawn by gravity toward the valve body 12 to form a first seal with the flange 62 against the pintle bearing 26 or a bearing splash shield 38, preventing or minimizing the escape of moist, hot gases under low pressure from the valve along the pintle. During engine running, high-pressure exhaust gases within the valve may be forced along the pintle through the bearing bore 24 and bearing splash shield 38 toward the actuator 30. The gases force the shield 56 to slide along the pintle 22, opening the first seal and forming a second seal with the flange 62 against the actuator 30, allowing the leaked gases to escape radially from the pintle without invading the actuator. A shield 56 for a gas management pintle valve 10, such as an exhaust gas recirculation valve for an internal combustion engine, for mitigating leakage of gas and moisture along the valve pintle 22 into the actuator 30, to prevent corrosion and failure of the actuator. The shield ...more ...less
7
DE60123305D1
Publication/Patent Number: DE60123305D1
Publication date: 2006-11-09
Application number: 60123305
Filing date: 2001-02-22
8
US6955336B2
Publication/Patent Number: US6955336B2
Publication date: 2005-10-18
Application number: 09/777,471
Filing date: 2001-02-06
IPC:
Abstract: An improved electric solenoid for providing linear mechanical actuation. The outer polepiece of the solenoid is provided with an axial, self-lubricated, non-magnetic bearing for closely supporting and centering an actuating shaft extending coaxially from the solenoid armature. Preferably, the radial tolerance between the diameters of the bearing inner bore and the shaft is as small as in practically possible without inducing drag of the shaft in the bearing, permitting reduction of the air gap between the armature and the polepieces to a minimal thickness. Preferably, the armature is axially tapered to avoid contact of the armature with the polepieces as a result of residual tolerances between the bearing and shaft. A significant increase in actuating force is realized in comparison with a prior art solenoid, and the improved solenoid may be used in any desired orientation. An improved electric solenoid for providing linear mechanical actuation. The outer polepiece of the solenoid is provided with an axial, self-lubricated, non-magnetic bearing for closely supporting and centering an actuating shaft extending coaxially from the solenoid armature ...more ...less
9
DE60113168D1
Publication/Patent Number: DE60113168D1
Publication date: 2005-10-13
Application number: 60113168
Filing date: 2001-02-20
10
EP1130244B1
Publication/Patent Number: EP1130244B1
Publication date: 2005-09-07
Application number: 01200601.1
Filing date: 2001-02-20
Abstract: A metering subassembly for use with a modular EGR valve 40 includes a metering subassembly 10 having an elongate metering shaft 14. A flanged end 24 of the metering shaft is disposed a predetermined distance above a top surface 30 of the metering subassembly 10. The metering subassembly 10 is configured for being coupled to an actuator subassembly 42 such that the flanged end 24 of the metering shaft 14 is disposed proximate the actuator subassembly. A gas arrestor 32 includes a side wall 34 interconnected with a collar 36. The collar surrounds a periphery of the flanged end 24. The side wall 34 extends from the collar 36 in a direction generally toward the top surface 30 of the metering subassembly 10. A metering subassembly for use with a modular EGR valve 40 includes a metering subassembly 10 having an elongate metering shaft 14. A flanged end 24 of the metering shaft is disposed a predetermined distance above a top surface 30 of the metering subassembly 10. The metering ...more ...less
11
US6729351B2
Publication/Patent Number: US6729351B2
Publication date: 2004-05-04
Application number: 09/778,571
Filing date: 2001-02-07
Abstract: An expanded-range pintle valve comprising a plurality of stages. Each stage comprises a valve seat and head capable of regulating flow through the valve over its own dynamic range. The valve head of a higher-flow stage includes the valve seat for the next-lower flow stage. The heads and seats for the multiple stages are nested concentrically, the progressively lower-flow stages having progressively smaller diameters. All valve heads except the lowest-flow head have axial and radial bores permitting flow therethrough so that flow may be regulated first by actuating the lowest-flow stage, then by actuating successively higher flow stages. A single pintle shaft connected to a solenoid actuator is adapted to engage each of the valve heads sequentially as the actuator progresses, beginning with the lowest-flow head, thereby extending incrementally the dynamic range of the valve as each stage is successively engaged. An expanded-range pintle valve comprising a plurality of stages. Each stage comprises a valve seat and head capable of regulating flow through the valve over its own dynamic range. The valve head of a higher-flow stage includes the valve seat for the next-lower flow stage. The ...more ...less
12
EP1126186A3
Publication/Patent Number: EP1126186A3
Publication date: 2004-02-11
Application number: 01200547.6
Filing date: 2001-02-16
Abstract: An improved modular, radially-compliant, redundantly-sealing journal-type bearing assembly 54,89,91 comprising two bearing elements 56,58 retained in a housing 60and positively loaded in opposing directions by a compression spring 74 disposed therebetween. A shaft 22 to be supported and sealed against leakage by the bearing, such as a valve pintle shaft, is disposed in an axial bore 62 in each of the bearing elements, which bores are fitted as closely to the diameter of the shaft as is possible without causing the shaft to bind in the bores. Each of the radial bearing faces 86 opposite the spring forms a seal with a corresponding internal surface 88 of the housing, defining thereby a redundant sealing system. The bearings are radially compliant within the housing by a predetermined small distance 66 to allow the shaft to be operatively self-centered, such as by an attached valve head mating into a valve seat. The improved bearing assembly may be pre-assembled offline to facilitate its incorporation into an apparatus, for example, a fuel cell valve, and may also be retrofitted into existing apparatus, for example, an exhaust gas recirculation valve. An improved modular, radially-compliant, redundantly-sealing journal-type bearing assembly 54,89,91 comprising two bearing elements 56,58 retained in a housing 60and positively loaded in opposing directions by a compression spring 74 disposed therebetween. A shaft 22 to be ...more ...less
13
US6759934B2
Publication/Patent Number: US6759934B2
Publication date: 2004-07-06
Application number: 10/004,638
Filing date: 2001-12-05
Abstract: A proportionally-controllable solenoid including primary and secondary pole pieces that surround an armature axially movable along an axial channel within the pole pieces. The pole pieces are separated axially by an air gap and are conically tapered toward the gap. The leading and trailing faces of the armature are substantially orthogonal to its direction of travel to minimize radial parasitic forces on these faces. Further, the armature is also lengthened such that the trailing face is always outside the axial channel in the secondary pole piece at all points of axial travel to minimize the pull-back effect of axial flux vectors on the trailing face. A proportionally-controllable solenoid including primary and secondary pole pieces that surround an armature axially movable along an axial channel within the pole pieces. The pole pieces are separated axially by an air gap and are conically tapered toward the gap. The leading ...more ...less
14
EP0986002A3
Publication/Patent Number: EP0986002A3
Publication date: 2004-04-28
Application number: 99306743.8
Filing date: 1999-08-25
Abstract: An intelligent printing system is extended to handle print objects such as EPS and PDF print objects without requiring the objects to be reformatted by selectively decomposing the EPS and PDF print objects and placing resource information contained in the objects in a resource database along with the print data. The resource information is not duplicated; only the first appearance of a resource is stored, later duplicates are discarded. Appropriate references are placed in the page description data stream so that the resource information can be retrieved and downloaded to the printer when the data is being processed at the print server. The downloading of a particular resource occurs only once. When the print data is sent to the printer, the downloaded resource information is recombined with the data and the combination is sent to a conventional EPS or PDF rasterizing program which converts the objects to printable data. An intelligent printing system is extended to handle print objects such as EPS and PDF print objects without requiring the objects to be reformatted by selectively decomposing the EPS and PDF print objects and placing resource information contained in the objects in a resource ...more ...less
15
US6634346B2
Publication/Patent Number: US6634346B2
Publication date: 2003-10-21
Application number: 09/955,528
Filing date: 2001-09-18
Abstract: A subassembly module including a pintle bearing, bearing retaining spring, and bearing splash shield for an exhaust gas recirculation (EGR) valve for an internal combustion engine. The bearing is provided with a circumferential flange for sealing with an outer surface of the valve body, and with an annular step in the flange for receiving the rolled or crimped skirt of the bearing splash shield. The bearing retaining spring surrounding the valve pintle is compressed and captured within the splash shield as the skirt is formed onto the annular step to form the module. The axial length of the module is slightly greater than the assembled distance between the valve body and the actuator of the EGR valve, such that the module is compressed by installation of the actuator onto the valve body, allowing the compressed spring to urge the bearing face sealingly against the valve body. Advantageously, the subassembly module may be pre-assembled offline by known methods to reduce complexity during assembly of the valve. A subassembly module including a pintle bearing, bearing retaining spring, and bearing splash shield for an exhaust gas recirculation (EGR) valve for an internal combustion engine. The bearing is provided with a circumferential flange for sealing with an outer surface of the ...more ...less
16
US6543746B2
Publication/Patent Number: US6543746B2
Publication date: 2003-04-08
Application number: 09/790,271
Filing date: 2001-02-21
Abstract: A system for containing leakage along a pintle shaft in a pintle-type gas control valve, such as an exhaust gas recirculation valve for an internal combustion engine or a reformate diverter valve for a fuel cell, comprising a novel seal element and means for sealing the element to the valve's pintle shaft bearing and to an interrupted pintle shaft. The system comprises two elements: a positive vapor block in the form of an elastomeric boot or folded diaphragm disposed across the pintle interruption, and a pintle shaft bearing disposable in the valve's body and sealingly secured to the boot or diaphragm. The system may include a coil spring disposed in compression within the boot or diaphragm. A system for containing leakage along a pintle shaft in a pintle-type gas control valve, such as an exhaust gas recirculation valve for an internal combustion engine or a reformate diverter valve for a fuel cell, comprising a novel seal element and means for sealing the element ...more ...less
17
US20030051712A1
Publication/Patent Number: US20030051712A1
Publication date: 2003-03-20
Application number: 09/955,528
Filing date: 2001-09-18
Abstract: A subassembly module including a pintle bearing, bearing retaining spring, and bearing splash shield for an exhaust gas recirculation (EGR) valve for an internal combustion engine. The bearing is provided with a circumferential flange for sealing with an outer surface of the valve body, and with an annular step in the flange for receiving the rolled or crimped skirt of the bearing splash shield. The bearing retaining spring surrounding the valve pintle is compressed and captured within the splash shield as the skirt is formed onto the annular step to form the module. The axial length of the module is slightly greater than the assembled distance between the valve body and the actuator of the EGR valve, such that the module is compressed by installation of the actuator onto the valve body, allowing the compressed spring to urge the bearing face sealingly against the valve body. Advantageously, the subassembly module may be pre-assembled offline by known methods to reduce complexity during assembly of the valve. A subassembly module including a pintle bearing, bearing retaining spring, and bearing splash shield for an exhaust gas recirculation (EGR) valve for an internal combustion engine. The bearing is provided with a circumferential flange for sealing with an outer surface of the ...more ...less
18
US6538543B2
Publication/Patent Number: US6538543B2
Publication date: 2003-03-25
Application number: 09/777,322
Filing date: 2001-02-06
Abstract: An improved solenoid for providing linear actuation. The outer polepiece of the solenoid is provided with a plurality of radially-dispersed labyrinthine passageways in communication between the exterior of the solenoid and an interior region including the armature and the interior of the windings. The polepiece is further provided with at least one passageway in communication between the exterior of the solenoid and an outer periphery of the windings within the housing. The two sets of passageways impede particles and droplets of moisture from entering the solenoid, while simultaneously permitting moisture such as condensation within the solenoid to evaporate and escape. An improved solenoid for providing linear actuation. The outer polepiece of the solenoid is provided with a plurality of radially-dispersed labyrinthine passageways in communication between the exterior of the solenoid and an interior region including the armature and the ...more ...less
19
US6670875B2
Publication/Patent Number: US6670875B2
Publication date: 2003-12-30
Application number: 09/781,646
Filing date: 2001-02-12
Abstract: An improved solenoid for providing linear actuation. The outer polepiece of the solenoid is provided with an axial journal bearing for supporting an actuating shaft extending from the solenoid armature. Radial tolerance between the bearing inner bore and the shaft is as small as in practically possible, which feature permits elimination of the prior art portion of the guiding sleeve extending into the outer polepiece, thereby retaining frictional losses with only the remaining sleeve portion in the inner polepiece. Small prior art air gaps at interfaces 42,44 between the polepieces and the housing are eliminated to minimize reluctance of the magnetic circuit. A significant increase in actuating force is realized in comparison with a prior art solenoid actuator. An improved solenoid for providing linear actuation. The outer polepiece of the solenoid is provided with an axial journal bearing for supporting an actuating shaft extending from the solenoid armature. Radial tolerance between the bearing inner bore and the shaft is as small as ...more ...less
20
US6604542B1
Publication/Patent Number: US6604542B1
Publication date: 2003-08-12
Application number: 09/721,257
Filing date: 2000-11-22
Abstract: A modular EGR valve includes an actuator subassembly and a metering subassembly. The metering subassembly defines a metering port and a metering chamber. The metering port and the metering chamber have a predetermined relative configuration. The metering subassembly is configured for being coupled to the actuator subassembly and for being coupled to an engine. A modular EGR valve includes an actuator subassembly and a metering subassembly. The metering subassembly defines a metering port and a metering chamber. The metering port and the metering chamber have a predetermined relative configuration. The metering subassembly is ...more ...less