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1
US8556194B2
Publication/Patent Number: US8556194B2
Publication date: 2013-10-15
Application number: 12/821,475
Filing date: 2010-06-23
Abstract: A fuel injector that includes a flying armature movable relative to a pintle stop, and an electromagnetic circuit configured to move the flying armature away from the pintle stop prior to accelerating the armature toward the pintle stop as part of moving the pintle to open the fuel injector. The flying armature increases the total force applied to the pintle to open the fuel injector by supplementing the static force imparted to the armature by a magnetic field with an impact force imparted by the armature being in motion toward and impacting with the pintle stop. The arrangement of magnetic circuit devices and materials used to make the magnetic circuit devices cooperate to provide a reversing force that urges the armature away from before urging the armature toward the pintle stop, and increases the rate at which the force that urges the armature toward the pintle stop increases. A fuel injector that includes a flying armature movable relative to a pintle stop, and an electromagnetic circuit configured to move the flying armature away from the pintle stop prior to accelerating the armature toward the pintle stop as part of moving the pintle to open the ...more ...less
2
US20110315795A1
Publication/Patent Number: US20110315795A1
Publication date: 2011-12-29
Application number: 12/821,475
Filing date: 2010-06-23
Abstract: A fuel injector that includes a flying armature movable relative to a pintle stop, and an electromagnetic circuit configured to move the flying armature away from the pintle stop prior to accelerating the armature toward the pintle stop as part of moving the pintle to open the fuel injector. The flying armature increases the total force applied to the pintle to open the fuel injector by supplementing the static force imparted to the armature by a magnetic field with an impact force imparted by the armature being in motion toward and impacting with the pintle stop. The arrangement of magnetic circuit devices and materials used to make the magnetic circuit devices cooperate to provide a reversing force that urges the armature away from before urging the armature toward the pintle stop, and increases the rate at which the force that urges the armature toward the pintle stop increases. A fuel injector that includes a flying armature movable relative to a pintle stop, and an electromagnetic circuit configured to move the flying armature away from the pintle stop prior to accelerating the armature toward the pintle stop as part of moving the pintle to open the ...more ...less
3
AT361417T
Publication/Patent Number: AT361417T
Publication date: 2007-05-15
Application number: 04076666
Filing date: 2004-06-07
4
EP1486664B1
Publication/Patent Number: EP1486664B1
Publication date: 2007-05-02
Application number: 04076666.9
Filing date: 2004-06-07
Abstract: A fuel pump (10) for supplying fuel at high fuel pressures includes a stationary body (12) having a plurality of radial cylinders (42, 44) connecting with a central fuel chamber (64). Inlet and outlet passages (66, 78) communicate with the fuel chamber (64). Plungers (46, 48) are reciprocated in the cylinders by cam followers (56) reciprocable in follower recesses (58) of the body. A rotary internal cam (24) engages the cam followers (56) and is configured to reciprocate the plungers (46, 48) in timed relation to sequentially draw fuel from the inlet passage (66) into the central fuel chamber (64) and alternately force fuel from the central fuel chamber (64) to the outlet passage (78) in response to rotation of the rotary cam. A preferred embodiment includes paired smaller and larger diameter cylinders and pistons which are sequentially actuated in overlapping fashion to minimize pulsing of the pressurized fuel discharged from the pump into associated engine fuel lines. A fuel pump (10) for supplying fuel at high fuel pressures includes a stationary body (12) having a plurality of radial cylinders (42, 44) connecting with a central fuel chamber (64). Inlet and outlet passages (66, 78) communicate with the fuel chamber (64). Plungers (46, 48) ...more ...less
5
DE602004006194T2
Publication/Patent Number: DE602004006194T2
Publication date: 2007-08-30
Application number: 602004006194
Filing date: 2004-06-07
6
DE602004006194D1
Publication/Patent Number: DE602004006194D1
Publication date: 2007-06-14
Application number: 602004006194
Filing date: 2004-06-07
7
DE602004001152T2
Publication/Patent Number: DE602004001152T2
Publication date: 2007-04-19
Application number: 602004001152
Filing date: 2004-03-29
8
AT330124T
Publication/Patent Number: AT330124T
Publication date: 2006-07-15
Application number: 04075965
Filing date: 2004-03-29
9
US7048516B2
Publication/Patent Number: US7048516B2
Publication date: 2006-05-23
Application number: 10/457,273
Filing date: 2003-06-09
Abstract: A fuel pump for supplying fuel at high fuel pressures includes a stationary body having a plurality of radial cylinders connecting with a central fuel chamber. Inlet and outlet passages communicate with the fuel chamber. Plungers are reciprocated in the cylinders by cam followers reciprocable in follower recesses of the body. A rotary internal cam engages the cam followers and is configured to reciprocate the plungers in timed relation to sequentially draw fuel from the inlet passage into the central fuel chamber and alternately force fuel from the central fuel chamber to the outlet passage in response to rotation of the rotary cam. A preferred embodiment includes paired smaller and larger diameter cylinders and pistons which are sequentially actuated in overlapping fashion to minimize pulsing of the pressurized fuel discharged from the pump into associated engine fuel lines. A fuel pump for supplying fuel at high fuel pressures includes a stationary body having a plurality of radial cylinders connecting with a central fuel chamber. Inlet and outlet passages communicate with the fuel chamber. Plungers are reciprocated in the cylinders by cam ...more ...less
10
EP1464837B1
Publication/Patent Number: EP1464837B1
Publication date: 2006-06-14
Application number: 04075965.6
Filing date: 2004-03-29
Abstract: A gerotor pump (10) for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances (62,62,66,68) and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump (10) include the use of a shadow port (60) in the side plate (14) opposite the outlet port (56) to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner (24) and outer (26) rotors have predetermined side clearances with the clearances (62,64) of the outer rotor being greater than those (66,68) of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing (40) with bearing sleeves (42,44) maintains concentricity. Additional features are disclosed. A gerotor pump (10) for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances ...more ...less
11
DE602004001152D1
Publication/Patent Number: DE602004001152D1
Publication date: 2006-07-27
Application number: 602004001152
Filing date: 2004-03-29
12
EP1486664A1
Publication/Patent Number: EP1486664A1
Publication date: 2004-12-15
Application number: 04076666.9
Filing date: 2004-06-07
Abstract: A fuel pump (10) for supplying fuel at high fuel pressures includes a stationary body (12) having a plurality of radial cylinders (42, 44) connecting with a central fuel chamber (64). Inlet and outlet passages (66, 78) communicate with the fuel chamber (64). Plungers (46, 48) are reciprocated in the cylinders by cam followers (56) reciprocable in follower recesses (58) of the body. A rotary internal cam (24) engages the cam followers (56) and is configured to reciprocate the plungers (46, 48) in timed relation to sequentially draw fuel from the inlet passage (66) into the central fuel chamber (64) and alternately force fuel from the central fuel chamber (64) to the outlet passage (78) in response to rotation of the rotary cam. A preferred embodiment includes paired smaller and larger diameter cylinders and pistons which are sequentially actuated in overlapping fashion to minimize pulsing of the pressurized fuel discharged from the pump into associated engine fuel lines. A fuel pump (10) for supplying fuel at high fuel pressures includes a stationary body (12) having a plurality of radial cylinders (42, 44) connecting with a central fuel chamber (64). Inlet and outlet passages (66, 78) communicate with the fuel chamber (64). Plungers (46, 48) ...more ...less
13
US6758656B2
Publication/Patent Number: US6758656B2
Publication date: 2004-07-06
Application number: 10/126,190
Filing date: 2002-04-19
Abstract: A multi-stage internal gear/turbine fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear/turbine fuel pump also includes a shaft extending axially and disposed in the housing. The multi-stage internal gear/turbine fuel pump further includes a plurality of pumping modules disposed axially along the shaft. One of the pumping modules is a turbine pumping module and another of the pumping modules is a gerotor pumping module for rotation by the motor to pump fuel from the inlet to the outlet. A multi-stage internal gear/turbine fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear/turbine fuel pump also includes a shaft extending axially and disposed in the housing. The multi-stage ...more ...less
14
EP1464837A1
Publication/Patent Number: EP1464837A1
Publication date: 2004-10-06
Application number: 04075965.6
Filing date: 2004-03-29
Abstract: A gerotor pump (10) for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances (62,62,66,68) and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump (10) include the use of a shadow port (60) in the side plate (14) opposite the outlet port (56) to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner (24) and outer (26) rotors have predetermined side clearances with the clearances (62,64) of the outer rotor being greater than those (66,68) of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing (40) with bearing sleeves (42,44) maintains concentricity. Additional features are disclosed. A gerotor pump (10) for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances ...more ...less
15
US6733249B2
Publication/Patent Number: US6733249B2
Publication date: 2004-05-11
Application number: 10/145,321
Filing date: 2002-05-14
Abstract: A multi-stage internal gear fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear fuel pump also includes a shaft extending axially and disposed in the housing for rotation by the motor. The multi-stage internal gear fuel pump further includes a plurality of pumping modules disposed axially along the shaft and each having an internal gear and an external gear cooperating with each other for rotation by the motor to pump fuel from the inlet to the outlet. A multi-stage internal gear fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear fuel pump also includes a shaft extending axially and disposed in the housing for rotation by the motor. The ...more ...less
16
US20040247470A1
Publication/Patent Number: US20040247470A1
Publication date: 2004-12-09
Application number: 10/457,273
Filing date: 2003-06-09
Abstract: A fuel pump for supplying fuel at high fuel pressures includes a stationary body having a plurality of radial cylinders connecting with a central fuel chamber. Inlet and outlet passages communicate with the fuel chamber. Plungers are reciprocated in the cylinders by cam followers reciprocable in follower recesses of the body. A rotary internal cam engages the cam followers and is configured to reciprocate the plungers in timed relation to sequentially draw fuel from the inlet passage into the central fuel chamber and alternately force fuel from the central fuel chamber to the outlet passage in response to rotation of the rotary cam. A preferred embodiment includes paired smaller and larger diameter cylinders and pistons which are sequentially actuated in overlapping fashion to minimize pulsing of the pressurized fuel discharged from the pump into associated engine fuel lines. A fuel pump for supplying fuel at high fuel pressures includes a stationary body having a plurality of radial cylinders connecting with a central fuel chamber. Inlet and outlet passages communicate with the fuel chamber. Plungers are reciprocated in the cylinders by cam ...more ...less
17
US6769889B1
Publication/Patent Number: US6769889B1
Publication date: 2004-08-03
Application number: 10/405,657
Filing date: 2003-04-02
Abstract: A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump include the use of a shadow port in the side plate opposite the outlet port to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner and outer rotors have predetermined side clearances with the clearances of the outer rotor being greater than those of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing with bearing sleeves maintains concentricity. Additional features are disclosed. A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances and by ...more ...less
18
US20030012664A1
Publication/Patent Number: US20030012664A1
Publication date: 2003-01-16
Application number: 10/145,321
Filing date: 2002-05-14
Abstract: A multi-stage internal gear fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear fuel pump also includes a shaft extending axially and disposed in the housing for rotation by the motor. The multi-stage internal gear fuel pump further includes a plurality of pumping modules disposed axially along the shaft and each having an internal gear and an external gear cooperating with each other for rotation by the motor to pump fuel from the inlet to the outlet. A multi-stage internal gear fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear fuel pump also includes a shaft extending axially and disposed in the housing for rotation by the motor. The ...more ...less
19
US20030010847A1
Publication/Patent Number: US20030010847A1
Publication date: 2003-01-16
Application number: 09/902,450
Filing date: 2001-07-10
Abstract: An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to reduce the amplitude of pressure variations and pressure waves in the fuel passage. A variety of fuel pressure damper embodiments are disclosed. An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to ...more ...less
20
US6629650B2
Publication/Patent Number: US6629650B2
Publication date: 2003-10-07
Application number: 09/902,450
Filing date: 2001-07-10
Abstract: An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to reduce the amplitude of pressure variations and pressure waves in the fuel passage. A variety of fuel pressure damper embodiments are disclosed. An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to ...more ...less