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1
EP3366913A1
Publication/Patent Number: EP3366913A1
Publication date: 2018-08-29
Application number: 18158082.0
Filing date: 2018-02-22
Inventor: Bircann, Raul A.  
Abstract: A mounting assembly (118) for a fuel system component (14) with an attachment bracket (20) includes an upper isolation member (26); an upper isolation member retainer (30) which captures the upper isolation member (26) axially between the upper isolation member (26) and the attachment bracket (20); a lower isolation member (28); a lower isolation member retainer (132) which captures the lower isolation member (28) axially between the lower isolation member (28) the attachment bracket (20); and a retention member (136) extending from the lower isolation member (28) and having a retention member first end (136a) and a retention member second end (136b) such that the retention member first end (136a) is fixed to the lower isolation member retainer (132) and such that the upper isolation member retainer (30) is captured axially between the attachment bracket (20) and the retention member second end (136b). A mounting assembly (118) for a fuel system component (14) with an attachment bracket (20) includes an upper isolation member (26); an upper isolation member retainer (30) which captures the upper isolation member (26) axially between the upper isolation member (26) and the ...more ...less
2
US9915236B1
Publication/Patent Number: US9915236B1
Publication date: 2018-03-13
Application number: 15/439,352
Filing date: 2017-02-22
Inventor: Bircann, Raul A.  
Abstract: A mounting assembly for a fuel system component with an attachment bracket includes an upper isolation member; an upper isolation member retainer which captures the upper isolation member axially between the upper isolation member and the attachment bracket; a lower isolation member; a lower isolation member retainer which captures the lower isolation member axially between the lower isolation member the attachment bracket; and a retention member extending from the lower isolation member and having a retention member first end and a retention member second end such that the retention member first end is fixed to the lower isolation member retainer and such that the upper isolation member retainer is captured axially between the attachment bracket and the retention member second end. A mounting assembly for a fuel system component with an attachment bracket includes an upper isolation member; an upper isolation member retainer which captures the upper isolation member axially between the upper isolation member and the attachment bracket; a lower isolation ...more ...less
3
US8038124B2
Publication/Patent Number: US8038124B2
Publication date: 2011-10-18
Application number: 12/384,961
Filing date: 2009-04-10
Inventor: Bircann, Raul A.  
Abstract: An improved disk-valve fuel injector comprising a self-centering, floating valve seat insert disposed in a valve body. The valve seat insert includes a circular first valve seat and the body includes a circular second valve seat concentric with the first valve seat. A spring urges the valve insert into compliance with a disk-shaped valve head. The valve insert is able to adjust position in all three dimensions, allowing the disk head to mate precisely with both seats, thereby minimizing leakage when the valve is closed, improving metering precision, and extending the working lifetime of the valve head and valve seats. An improved disk-valve fuel injector comprising a self-centering, floating valve seat insert disposed in a valve body. The valve seat insert includes a circular first valve seat and the body includes a circular second valve seat concentric with the first valve seat. A spring ...more ...less
4
US20100038458A1
Publication/Patent Number: US20100038458A1
Publication date: 2010-02-18
Application number: 12/228,351
Filing date: 2008-08-12
Inventor: Bircann, Raul A.  
Abstract: A fuel injector for dispensing gaseous fuel into an internal combustion engine, including a valve body having an axial bore; a valve seat sub-assembly slidably disposed in the axial bore; a valve needle sub-assembly disposed within the axial bore and selectively matable with the valve seat sub-assembly; an electrical actuator connected to the valve needle sub-assembly for moving the valve needle sub-assembly in alternating axial directions to cause the valve needle to make intermittent contact with and separate from the valve seat sub-assembly to control flow of fuel from the outlet end; and an energy attenuator sub-assembly having a polymeric resilient layer fixedly disposed in the axial bore and in contact with the valve seat sub-assembly to bias the valve seat sub-assembly against the valve needle sub-assembly to dampen closing impact of the valve needle sub-assembly against the valve seat sub-assembly. A fuel injector for dispensing gaseous fuel into an internal combustion engine, including a valve body having an axial bore; a valve seat sub-assembly slidably disposed in the axial bore; a valve needle sub-assembly disposed within the axial bore and selectively matable with the ...more ...less
5
US20100258657A1
Publication/Patent Number: US20100258657A1
Publication date: 2010-10-14
Application number: 12/384,961
Filing date: 2009-04-10
Inventor: Bircann, Raul A.  
Abstract: An improved disk-valve fuel injector comprising a self-centering, floating valve seat insert disposed in a valve body. The valve seat insert includes a circular first valve seat and the body includes a circular second valve seat concentric with the first valve seat. A spring urges the valve insert into compliance with a disk-shaped valve head. The valve insert is able to adjust position in all three dimensions, allowing the disk head to mate precisely with both seats, thereby minimizing leakage when the valve is closed, improving metering precision, and extending the working lifetime of the valve head and valve seats. An improved disk-valve fuel injector comprising a self-centering, floating valve seat insert disposed in a valve body. The valve seat insert includes a circular first valve seat and the body includes a circular second valve seat concentric with the first valve seat. A spring ...more ...less
6
US20100044471A1
Publication/Patent Number: US20100044471A1
Publication date: 2010-02-25
Application number: 12/229,384
Filing date: 2008-08-22
Inventor: Bircann, Raul A.  
Abstract: A solenoid operated gaseous fuel injector includes a pole positioned axially movable within a fuel tube, a retaining ring axially retaining a first end of the pole, a spring element positioned in contact with a second end of said pole, and an armature transmitting a force onto said pole at impact. The gaseous fuel injector operates to effectively attenuate and dissipate armature impact force onto the pole. Accordingly, impact energy attenuation is attained while cold temperature stiction of the moving parts is avoided. A solenoid operated gaseous fuel injector includes a pole positioned axially movable within a fuel tube, a retaining ring axially retaining a first end of the pole, a spring element positioned in contact with a second end of said pole, and an armature transmitting a force onto ...more ...less
7
US7461642B2
Publication/Patent Number: US7461642B2
Publication date: 2008-12-09
Application number: 11/332,082
Filing date: 2006-01-13
Abstract: Means for attenuating the seating force of a cam-actuated poppet valve such as an exhaust gas recirculation valve in an internal combustion engine including a shock-absorber disposed between the valve stem and valve head. In a currently preferred embodiment, the shock-absorber is a wave washer disposed around the valve stem and captured between the valve stem and the valve head, between which axial motion is allowed. After the valve head engages the valve seat to close the valve, any further travel of the actuator cam and valve stem is absorbed by compression of the wave washer, thus attenuating additional force on elements of the valve actuation train. In opening the valve, the reverse occurs, in that initial motion of the actuator cam and valve stem serves to relieve compression of the wave washer, followed by removal of the valve head from the valve seat. Means for attenuating the seating force of a cam-actuated poppet valve such as an exhaust gas recirculation valve in an internal combustion engine including a shock-absorber disposed between the valve stem and valve head. In a currently preferred embodiment, the shock-absorber ...more ...less
8
DE60311374D1
Publication/Patent Number: DE60311374D1
Publication date: 2007-03-15
Application number: 60311374
Filing date: 2003-08-22
9
DE60311374T2
Publication/Patent Number: DE60311374T2
Publication date: 2007-10-31
Application number: 60311374
Filing date: 2003-08-22
10
EP1398494B1
Publication/Patent Number: EP1398494B1
Publication date: 2007-01-24
Application number: 03077630.6
Filing date: 2003-08-22
Abstract: The valve has a pintle shaft bushing (32) placed in a port. A valve pintle shaft is placed in the bushing and extends into a chamber. A valve head placed on the shaft mates with a valve seat. A coil spring (44) is placed in connection between an actuator and the bushing for retaining the bushing in the port against operating pressure within the chamber. A gas seal surrounds the pintle between the retainer and the actuator. An independent claim is also included for an internal combustion engine. The valve has a pintle shaft bushing (32) placed in a port. A valve pintle shaft is placed in the bushing and extends into a chamber. A valve head placed on the shaft mates with a valve seat. A coil spring (44) is placed in connection between an actuator and the bushing for ...more ...less
11
DE60123305T2
Publication/Patent Number: DE60123305T2
Publication date: 2007-08-23
Application number: 60123305
Filing date: 2001-02-22
12
US7104522B2
Publication/Patent Number: US7104522B2
Publication date: 2006-09-12
Application number: 10/641,558
Filing date: 2003-08-15
Inventor: Bircann, Raul A.  
Abstract: An exhaust gas recirculation valve assembly including a bushing and pintle shaft sub-assembly having a pintle shaft supported by a sleeve bushing, the contact area between the shaft and bushing being reduced such that coking deposits that form on the remaining contact area can be broken by the force of the valve actuator, thereby preventing sticking of the valve from coking accumulations. Either the shaft surface or the bushing surface is relieved in a pattern of incuse areas and residual bearing areas. A currently preferred pattern is a helix. An exhaust gas recirculation valve assembly including a bushing and pintle shaft sub-assembly having a pintle shaft supported by a sleeve bushing, the contact area between the shaft and bushing being reduced such that coking deposits that form on the remaining contact area can ...more ...less
13
DE60113168T2
Publication/Patent Number: DE60113168T2
Publication date: 2006-01-19
Application number: 60113168
Filing date: 2001-02-20
14
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
15
DE60120802D1
Publication/Patent Number: DE60120802D1
Publication date: 2006-08-03
Application number: 60120802
Filing date: 2001-02-16
16
DE60120802T2
Publication/Patent Number: DE60120802T2
Publication date: 2006-11-30
Application number: 60120802
Filing date: 2001-02-16
17
DE60123305D1
Publication/Patent Number: DE60123305D1
Publication date: 2006-11-09
Application number: 60123305
Filing date: 2001-02-22
18
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
19
US6874755B2
Publication/Patent Number: US6874755B2
Publication date: 2005-04-05
Application number: 10/641,831
Filing date: 2003-08-15
Inventor: Bircann, Raul A.  
IPC:
Abstract: A solenoid-actuated pintle valve assembly having a pintle shaft extending from a metering base sub-assembly into a solenoid actuator sub-assembly, the pintle shaft being equipped with a radially-extending fixed shield outside the metering base sub-assembly. The shield moves axially with the pintle during valve actuation and is located on the shaft so that when the pintle is in the valve-closed position, the shield cooperates with the pintle bushing to form an effective impedance to gas leakage from the metering base sub-assembly along the pintle shaft. When the valve is in the fully open position at the opposite extreme of pintle travel, the shield cooperates with an armature shield in the actuator to prevent entrance of gases into the solenoid. The invention is especially useful for exhaust gas recirculation valves on internal combustion engines. A solenoid-actuated pintle valve assembly having a pintle shaft extending from a metering base sub-assembly into a solenoid actuator sub-assembly, the pintle shaft being equipped with a radially-extending fixed shield outside the metering base sub-assembly. The shield moves ...more ...less
20
US6889956B2
Publication/Patent Number: US6889956B2
Publication date: 2005-05-10
Application number: 10/374,552
Filing date: 2003-02-25
IPC:
Abstract: A pintle bushing assembly for a poppet valve assembly including a tolerance ring which is disposable between the pintle bushing and a bore in the body of the valve to both seal and center the bushing in the bore. The tolerance ring includes a plurality of radially-extending dimples which are deformable during assembly such that the valve pintle can be aligned coaxially with the valve seat under all conditions. An axial flange on the tolerance ring is sealed against axial surfaces of the valve body adjacent the bore and a flange on the bushing to prevent leakage past the bushing. A pintle bushing assembly for a poppet valve assembly including a tolerance ring which is disposable between the pintle bushing and a bore in the body of the valve to both seal and center the bushing in the bore. The tolerance ring includes a plurality of radially-extending ...more ...less