Source: http://www.google.com/patents/US6851443?dq=actionscript
Timestamp: 2016-10-01 04:01:04
Document Index: 619017810

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'Application No. 60', 'art 30', 'art 30', 'art 30', 'art 30', 'art 30']

Patent US6851443 - Apparatus and method for preventing resonance in a fuel vapor pressure ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA device and method for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief...http://www.google.com/patents/US6851443?utm_source=gb-gplus-sharePatent US6851443 - Apparatus and method for preventing resonance in a fuel vapor pressure management apparatusAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6851443 B2Publication typeGrantApplication numberUS 10/170,420Publication dateFeb 8, 2005Filing dateJun 14, 2002Priority dateJun 14, 2001Fee statusPaidAlso published asDE60222547D1, DE60222547T2, DE60222549D1, DE60222549T2, EP1395742A1, EP1395742B1, EP1399662A1, EP1399662B1, US6668876, US6772739, US6820642, US6892754, US6913036, US6941933, US20030024510, US20030029425, US20030034014, US20030037772, US20030056771, US20030056852, US20030070473, WO2002103192A1, WO2002103193A1Publication number10170420, 170420, US 6851443 B2, US 6851443B2, US-B2-6851443, US6851443 B2, US6851443B2InventorsAndre Veinotte, Paul PerryOriginal AssigneeSiemens Vdo Automotive, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (40), Non-Patent Citations (15), Referenced by (4), Classifications (18), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetApparatus and method for preventing resonance in a fuel vapor pressure management apparatus
US 6851443 B2Abstract
A device and method for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a housing defining an interior chamber, a pressure operable device separating the interior chamber into first and second portions, and a device preventing resonance. The pressure operable device includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. The device preventing resonance includes at least one of a dashpot defined by the housing and the poppet, a gap between the poppet and the seal, and a resilient element applying a force biasing the poppet toward the seal. The dashpot damps movement of the poppet associated with the performing excess positive pressure relief. The gap modulates fluid flow that occurs between the surface and the tip during the performing excess negative pressure relief. And the force is applied eccentrically with respect to the axis so as to damp resonance due to movement of the poppet associated with the performing excess positive pressure relief.
1. A device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine, the fuel vapor pressure management apparatus performing leak detection on a headspace of the fuel system, performing excess negative pressure relief of the headspace, and performing excess positive pressure relief of the headspace, the device comprising:
a housing defining an interior chamber, the housing including a wall projecting into the interior chamber and surrounding an axis; and a pressure operable device separating the interior chamber into first and second portions, the pressure operable device including a poppet movable along the axis, the poppet includes a surface matingly and telescopically engaging the wall so as to define a variable volume sub-chamber within the second portion of the interior chamber; wherein the sub-chamber and the telescopic movement of the poppet with respect to the wall define a dashpot that damps movement of the poppet while the fuel vapor pressure management apparatus performs excess positive pressure relief. 2. The device according to claim 1, wherein the wall comprises a right circular cylinder centered about the axis.
3. The device according to claim 2, wherein the surface of the poppet comprises a right circular cylinder centered about the axis.
4. The device according to claim 1, wherein the wall comprises a radially inner face and a radially outer face, and the surface of the poppet comprises first and second parts, the first part confronts the radially inner face, and the second part confronts the radially outer face.
5. A device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine, the fuel vapor pressure management apparatus performing leak detection on a headspace of the fuel system, performing excess negative pressure relief of the headspace, and performing excess positive pressure relief of the headspace, the apparatus comprising:
a poppet movable along an axis, the poppet includes a corrugation having a surface facing away from the axis; and a seal adapted to cooperatively engage the poppet, the seal including a lip projecting toward the axis, and the lip includes a tip that is adapted to confront the surface during movement of the lip that is associated with the performing excess negative pressure relief. 6. The device according to claim 5, wherein the surface extends generally parallel to the axis.
7. The device according to claim 5, wherein the surface extends generally obliquely with respect to the axis.
8. The device according to claim 5, wherein the surface extends generally parallel to a path traced by the tip during the movement of the lip that is associated with the performing excess negative pressure relief.
9. The device according to claim 5, wherein a gap between the surface and the tip modulates fluid flow that occurs between the surface and the tip during the performing excess negative pressure relief.
10. A device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine, the fuel vapor pressure management apparatus performing leak detection on a headspace of the fuel system, performing excess negative pressure relief of the headspace, and performing excess positive pressure relief of the headspace, the apparatus comprising:
a housing defining an interior chamber; a pressure operable device separating the interior chamber into first and second portions, the pressure operable device including a poppet movable along an axis and a seal adapted to cooperatively engage the poppet; and a resilient element applying a force biasing the poppet toward the seal, the force being applied eccentrically with respect to the axis, and the resilient element being deformed while the fuel vapor pressure management apparatus performs excess positive pressure relief. 11. The device according to claim 10, wherein the resilient element extends between the housing and the poppet.
12. The device according to claim 10, wherein the resilient element comprises a coil spring eccentrically surrounding the axis.
13. The device according to claim 10, wherein resilient element being eccentrically located with respect to the axis dampens movement of the poppet associated with the performing excess positive pressure relief.
14. A fuel vapor pressure management apparatus for a fuel system supplying fuel to an internal combustion engine, the fuel vapor pressure management apparatus performing leak detection on a headspace of the fuel system, performing excess negative pressure relief of the headspace, and performing excess positive pressure relief of the headspace, the apparatus comprising:
a housing defining an interior chamber; a pressure operable device separating the interior chamber into first and second portions, the pressure operable device including a poppet movable along an axis and a seal adapted to cooperatively engage the poppet; and a device preventing resonance including at least one of: a dashpot defined by the housing and the poppet, the dashpot damping movement of the poppet associated with the performing excess positive pressure relief; a gap between the poppet and the seal, the gap modulating fluid flow that occurs between the surface and the tip during the performing excess negative pressure relief; and a resilient element applying a force biasing the poppet toward the seal, the force being applied eccentrically with respect to the axis so as to damp resonance due to movement of the poppet associated with the performing excess positive pressure relief. 15. A method of preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine, the fuel vapor pressure management apparatus performing leak detection on a headspace of the fuel system, performing excess negative pressure relief of the headspace, and performing excess positive pressure relief of the headspace, the method comprising:
providing a housing and a pressure operable device, the housing defining an interior chamber, and the pressure operable device separating the interior chamber into first and second portions, the pressure operable device including a poppet movable along an axis and a seal adapted to cooperatively engage the poppet; positioning a dashpot damping movement of the poppet associated with the performing excess positive pressure relief; modulating fluid flow occurring between the surface and the seal during the performing excess negative pressure relief; and applying a force biasing the poppet toward the seal, the force being applied eccentrically with respect to the axis so as to damp resonance due to movement of the poppet associated with the performing excess positive pressure relief. Description
This application claims the benefit of the earlier filing date of U.S. Provisional Application No. 60/298,255, filed 14 Jun. 2001, U.S. Provisional Application No. 60/310,750, filed 8 Aug. 2001, and the U.S. Provisional Application No. 60/383,783, filed 30 May 2002, all of which are incorporated by reference herein in their entirety.
Related co-pending applications filed concurrently herewith are U.S. application Ser. No. 10/170,3971, filed on 14 Jun. 2002; U.S. application Ser. No. 10/170,395, filed on 14 Jun. 2002; U.S. application Ser. No. 10/171,473, filed on 14 Jun. 2002; U.S. application Ser. No. 10/171,472, filed on 14 Jun. 2002; U.S. application Ser. No. 10/171,471, filed on 14 Jun. 2002; U.S. application Ser. No. 10/171,470, filed on 14 Jun. 2002; U.S. application Ser. No. 10/171,469, filed on 14 Jun. 2002; all of which are incorporated by reference herein in their entirety.
A fuel vapor pressure management apparatus that manages pressure and detects leaks in a fuel system. In particular, a fuel vapor pressure management apparatus that vents positive pressure, vents excess negative pressure, and uses evaporative natural vacuum to perform a leak diagnostic.
The present invention provides a device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a housing defines an interior chamber, and a pressure operable device that separates the interior chamber into first and second portions. The housing includes a wall that projects into the interior chamber and surrounds an axis. And the pressure operable device includes a poppet that is movable along the axis, and includes a surface matingly and telescopically engaging the wall so as to define a variable volume sub-chamber within the second portion of the interior chamber. Wherein the sub-chamber and the telescopic movement of the poppet with respect to the wall define a dashpot that damps movement of the poppet associated with the performing excess positive pressure relief.
The present invention also provides a device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a poppet that is movable along an axis, and a seal adapted to cooperatively engage the poppet. The poppet includes a corrugation that has a surface that faces away from the axis. The seal includes a lip that projects toward the axis. The lip includes a tip that is adapted to confront the surface during movement of the lip that is associated with the performing excess negative pressure relief.
The present invention also provides a device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a housing defining an interior chamber, a pressure operable device separating the interior chamber into first and second portions, and a resilient element applying a force biasing the poppet toward the seal. The pressure operable device includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. And the force is applied eccentrically with respect to the axis.
The present invention also provides a device for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a housing defining an interior chamber, a pressure operable device separating the interior chamber into first and second portions, and a device preventing resonance. The pressure operable device includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. The device preventing resonance includes at least one of a dashpot defined by the housing and the poppet, a gap between the poppet and the seal, and a resilient element applying a force biasing the poppet toward the seal. The dashpot damps movement of the poppet associated with the performing excess positive pressure relief. The gap modulates fluid flow that occurs between the surface and the tip during the performing excess negative pressure relief. And the force is applied eccentrically with respect to the axis so as to damp resonance due to movement of the poppet associated with the performing excess positive pressure relief.
The present invention also provides a method for method of preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The method includes providing a housing that defines an interior chamber and a pressure operable device that separates the interior chamber into first and second portions. The pressure operable device includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. The method further includes positioning a dashpot to damp movement of the poppet associated with the performing excess positive pressure relief, modulate fluid flow that occurs between the surface and the seal during the performing excess negative pressure relief, and apply a force biasing the poppet toward the seal. The force is applied eccentrically with respect to the axis so as to damp resonance due to movement of the poppet associated with the performing excess positive pressure relief.
Referring to FIG. 1, a fuel system 10, e.g., for an engine (not shown), includes a fuel tank 12, a vacuum source 14 such as an intake manifold of the engine, a purge valve 16, a fuel vapor collection canister 18 (e.g., a charcoal canister), and a fuel vapor pressure management apparatus 20.
It is understood that volatile liquid fuels, e.g., gasoline, can evaporate under certain conditions, e.g., rising ambient temperature, thereby generating fuel vapor. In the course of cooling that is experienced by the fuel system 10, e.g., after the engine is turned off, a vacuum is naturally created by cooling the fuel vapor and air, such as in the headspace of the fuel tank 12 and in the fuel vapor collection canister 18. According to the present description, the existence of a vacuum at the first predetermined pressure level indicates that the integrity of the fuel system 10 is satisfactory. Thus, signaling 22 is used to indicate the integrity of the fuel system 10, i.e., that there are no appreciable leaks. Subsequently, the vacuum relief 24 at a pressure level below the first predetermined pressure level can protect the fuel tank 12, e.g., can prevent structural distortion as a result of stress caused by vacuum in the fuel system 10.
FIG. 2A shows an embodiment of the fuel vapor pressure management apparatus 20 that is particularly suited to being mounted on the fuel vapor collection canister 18. The fuel vapor pressure management apparatus 20 includes a housing 30 that can be mounted to the body of the fuel vapor collection canister 18 by a “bayonet” style attachment 32. A seal (not shown) can be interposed between the fuel vapor collection canister 18 and the fuel vapor pressure management apparatus 20 so as to provide a fluid tight connection. The attachment 32, in combination with a snap finger 33, allows the fuel vapor pressure management apparatus 20 to be readily serviced in the field. Of course, different styles of attachments between the fuel vapor pressure management apparatus 20 and the body of the fuel vapor collection canister 18 can be substituted for the illustrated bayonet attachment 32. Examples of different attachments include a threaded attachment, and an interlocking telescopic attachment. Alternatively, the fuel vapor collection canister 18 and the housing 30 can be bonded together (e.g., using an adhesive), or the body of the fuel vapor collection canister 18 and the housing 30 can be interconnected via an intermediate member such as a rigid pipe or a flexible hose.
The housing 30 defines an interior chamber 31 and can be an assembly of a first housing part 30 a and a second housing part 30 b. The first housing part 30 a includes a first port 36 that provides fluid communication between the fuel vapor collection canister 18 and the interior chamber 31. The second housing part 30 b includes a second port 38 that provides fluid communication, e.g., venting, between the interior chamber 31 and the ambient atmosphere. A filter (not shown) can be interposed between the second port 38 and the ambient atmosphere for reducing contaminants that could be drawn into the fuel vapor pressure management apparatus 20 during the vacuum relief 24 or during operation of the purge valve 16.
A pressure operable device 40 can separate the interior chamber 31 into a first portion 31 a and a second portion 31 b. The first portion 31 a is in fluid communication with the fuel vapor collection canister 18 through the first port 36, and the second portion 31 b is in fluid communication with the ambient atmosphere through the second port 38.
The resilient element 60 coil spring can also be eccentrically located with respect to the axis A so as to tend to guide the movement of the poppet 42. For example, a coil spring that is located eccentrically with respect to the axis A would cause the portion of the perimeter of the poppet 42 that is furthest away from the biasing force of the resilient element to initially move during the pressure blow-off 26. The inventors have discovered that such a guided movement feathers or modulates the rate of fluid flow, and that this feathering tends to eliminate resonance and noise that are caused by the repeatedly starting and stopping of fluid flow as the lip 54 engages and disengages the poppet 42 during the pressure blow-off 26.
The second housing part 30 b′ includes a wall 300 projecting into the chamber 31 and surrounding the axis A. The poppet 42′ includes at least one corrugation 420 that also surrounds the axis A. The wall 300 and the at least one corrugation 420 are sized and arranged with respect to one another such that the corrugation 420 telescopically receives and guides the wall 300 as the poppet 42′ moves along the axis A. The guidance that the wall 300 provides to the movement of the poppet 42′ can reduce resonance and noise. Preferably, the wall 300 and the at least one corrugation 420 are right-circle cylinders.
The wall 300 and the at least one corrugation 420 cooperatively define a sub-chamber 310 within the chamber 31′. Movement of the poppet 42′ along the axis A causes fluid displacement between the chamber 31′ and the sub-chamber 310. This fluid displacement has the effect of a dashpot for damping resonance of the poppet 42′. A metering aperture (not show) could be provided to define a dedicated flow channel for the displacement of fluid between the chamber 31′ and the sub-chamber 310.
As it is shown in FIG. 2C, the poppet 42′ can include additional corrugations that can enhance the rigidity of the poppet 42′, particularly in the areas at the interfaces with the seal 50 and the resilient element 60. Preferably, an additional corrugation that is proximate the lip 54 can also perform a resonance damping function. For example, the radially outer corrugation that is shown in FIG. 2C is located with respect to the tip of lip 54 such that during the vacuum relief 24, the area between the tip and the corrugation is reduced to restrict fluid flow. That is to say, as the lip 54 is deformed during the vacuum relief 24, the tip of the lip 54 moves in close proximity with the radially outermost corrugation that is shown in FIG. 2C. The inventors have discovered that this close proximity feathers or modulates the rate of fluid flow, and that this feathering tends to eliminate resonance and noise that are caused by the repeatedly starting and stopping of fluid flow as the lip 54 engages and disengages the poppet 42 during the vacuum relief 24.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS322084 *Jul 14, 1885 wilderUS2204706Apr 24, 1939Jun 18, 1940Searle Dudley FRemote controlled vacuum brake valveUS2318962 *Aug 3, 1940May 11, 1943Parker Arthur LValve assemblyUS2679946May 14, 1951Jun 1, 1954Stant Mfg Company IncGasoline tank cap with doubleacting valveUS3413840Apr 19, 1966Dec 3, 1968Mcmullen John JLeak detection systemUS3741232Oct 12, 1970Jun 26, 1973Eaton Yale & TowneValve for evaporative loss controlUS4368366Jan 7, 1981Jan 11, 1983Aisin Seiki Kabushiki KaishaPneumatically operated device with valve and switch mechanismsUS4819607Oct 9, 1987Apr 11, 1989Borg-Warner Automotive, Inc.Vapor vent valve apparatusUS4842015 *May 9, 1988Jun 27, 1989Wabco Westinghouse Fahrzeugbremsen GmbhCheck valveUS4926825Nov 30, 1988May 22, 1990Honda Giken Kogyo K.K. (Honda Motor Co., Ltd. In English)Air-fuel ratio feedback control method for internal combustion enginesUS4949695Jul 21, 1989Aug 21, 1990Toyota Jidosha Kabushiki KaishaDevice for detecting malfunction of fuel evaporative purge systemUS4951701Jul 17, 1989Aug 28, 1990Vernay Laboratories, Inc.Combination air vent and overpressure valveUS4962744Aug 18, 1989Oct 16, 1990Toyota Jidosha Kabushiki KaishaDevice for detecting malfunction of fuel evaporative purge systemUS5021071Mar 14, 1990Jun 4, 1991General Motors CorporationVehicle fuel tank pressure control methodUS5036823Aug 17, 1990Aug 6, 1991General Motors CorporationCombination overfill and tilt shutoff valve system for vehicle fuel tankUS5088466Jul 5, 1991Feb 18, 1992Mitsubishi Denki K.K.Evaporated fuel gas purging systemUS5105789Mar 22, 1991Apr 21, 1992Nissan Motor Company, LimitedApparatus for checking failure in evaporated fuel purging unitUS5113834May 31, 1991May 19, 1992Nissan Motor Company, LimitedSelf-diagnosing fuel-purging system used for fuel processing systemUS5116257Jan 8, 1991May 26, 1992Stant Inc.Tank venting control assemblyUS5143035Oct 10, 1991Sep 1, 1992Toyota Jidosha Kabushiki KaishaApparatus for detecting malfunction in evaporated fuel purge systemUS5146902Dec 2, 1991Sep 15, 1992Siemens Automotive LimitedPositive pressure canister purge system integrity confirmationUS5150689Sep 12, 1991Sep 29, 1992Nissan Motor Co., Ltd.Fuel tank vapor control system with means for warning of malfunction of canisterUS5158054Oct 10, 1991Oct 27, 1992Toyota Jidosha Kabushiki KaishaMalfunction detection apparatus for detecting malfunction in evaporated fuel purge systemUS5191870Oct 2, 1991Mar 9, 1993Siemens Automotive LimitedDiagnostic system for canister purge systemUS5224511 *Apr 22, 1988Jul 6, 1993Babcock Sempell AgSpring-loaded safety valveUS5253629Feb 3, 1992Oct 19, 1993General Motors CorporationFlow sensor for evaporative control systemUS5263462Oct 29, 1992Nov 23, 1993General Motors CorporationSystem and method for detecting leaks in a vapor handling systemUS5295472Dec 29, 1992Mar 22, 1994Toyota Jidosha Kabushiki KaishaApparatus for detecting malfunction in evaporated fuel purge system used in internal combustion engineUS5373822Dec 21, 1992Dec 20, 1994Ford Motor CompanyHydrocarbon vapor control system for an internal combustion engineUS5449018Jan 4, 1994Sep 12, 1995Stant Manufacturing Inc.Flow control valveUS5524662Aug 2, 1994Jun 11, 1996G.T. Products, Inc.Fuel tank vent system and diaphragm valve for such systemUS5863025Feb 23, 1996Jan 26, 1999Kyosan Denki Co., Ltd.Evaporator control valve provided with a solenoid for use in diagnosing troubleUS5911209Nov 5, 1997Jun 15, 1999Nissan Motor Co., Ltd.Fuel vapor processor diagnostic deviceUS6328021Mar 31, 2000Dec 11, 2001Siemens Canada LimitedDiaphragm for an integrated pressure management apparatusUS6450152Jun 15, 2001Sep 17, 2002Siemens Automotive Inc.Low-profile fuel tank isolation valveUS6460566 *Mar 31, 2000Oct 8, 2002Siemens Canada LimitedIntegrated pressure management system for a fuel systemUS6478045Apr 5, 2000Nov 12, 2002Siemens Canada LimitedSolenoid for an integrated pressure management apparatusUS6564780May 18, 2001May 20, 2003Toyota Jidosha Kabushiki KaishaDiagnostic apparatus and method for fuel vapor purge systemWO1991012426A1Jan 9, 1991Aug 22, 1991Robert Bosch GmbhInstallation for venting the petrol tank of a motor vehicle and process for testing its performanceWO2001038716A1Nov 17, 2000May 31, 2001Siemens Automotive Inc.Integrated pressure management system for a fuel system* Cited by examinerNon-Patent CitationsReference1U.S. Appl. No. 10/170,395, filed Jun. 14, 2002, Andre Veinotte et al.2U.S. Appl. No. 10/170,469, filed Jun. 14, 2002, Andre Veinotte et al.3U.S. Appl. No. 10/171,397, filed Jun. 14, 2002, Andre Veinotte et al.4U.S. Appl. No. 10/171,470, filed Jun. 14, 2002, Andre Veinotte et al.5U.S. Appl. No. 10/171,471, filed Jun. 14, 2002, Andre Veinotte et al.6U.S. Appl. No. 10/171,472, filed Jun. 14, 2002, Andre Veinotte et al.7U.S. Appl. No. 10/171,473, filed Jun. 14, 2002, Andre Veinotte et al.8U.S. Appl. No. 10/667,902, filed Sep. 23, 2003, Perry et al., In-Use Rate Based Calculation for a Fuel Vapor Pressure Management Apparatus.9U.S. Appl. No. 10/667,903, filed Sep. 23, 2003, Veinotte et al., Rationality Testing for a Fuel Vapor Pressure Management Apparatus.10U.S. Appl. No. 10/667,963, filed Sep. 23, 2003, Veinotte et al., Apparatus and Method of Changing Printed Circuit Boards in a Fuel Vapor Pressure Management.11U.S. Appl. No. 10/667,965, filed Sep. 23, 2003, Veinotte, Method of Designing a Fuel Vapor Pressure Management Apparatus.12U.S. Appl. No. 10/736,773, filed Dec. 17, 2003, Perry et al., Apparatus, System and Method of Establishing a Test Threshold for a Fuel Vapor Leak Detection System.13U.S. Appl. No. 10/758,239, filed Jan. 16, 2004, Veinotte, Flow Sensor Integrated with Leak Detection for Purge Valve Diagnostic.14U.S. Appl. No. 10/758,272, filed Jan. 16, 2004, Veinotte et al., Flow Sensor for Purge Valve Diagnostic.15U.S. Appl. No. 10/758,273, filed Jan. 16, 2004, Veinotte et al., Flow Sensor for Purge Valve Diagnostic.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7121267 *Mar 8, 2004Oct 17, 2006Siemens Vdo Automotive, Inc.Poppet for an integrated pressure management apparatus and fuel system and method of minimizing resonanceUS8967193 *Dec 16, 2011Mar 3, 2015Audi AgDevice for ventilating and aerating a fuel tankUS20040173263 *Mar 8, 2004Sep 9, 2004Siemens Vdo Automotive CorporationPoppet for an integrated pressure management apparatus and fuel system and method of minimizing resonanceUS20120160219 *Jun 28, 2012Audi AgDevice for ventilating and aerating a fuel tank* Cited by examinerClassifications U.S. Classification137/2, 137/493.9, 137/514.3, 123/519, 137/14International ClassificationF02M25/08Cooperative ClassificationY10T137/792, Y10T137/0324, Y10T137/0396, F02M25/0836, Y10T137/7851, F02M25/0854, Y10T137/778, F02M25/0809, Y10T137/8326European ClassificationF02M25/08F, F02M25/08C, F02M25/08BLegal EventsDateCodeEventDescriptionDec 20, 2004ASAssignmentOwner name: SIEMENS VDO AUTOMOTIVE INC., CANADAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VEINOTTE, ANDRE;PERRY, PAUL D.;REEL/FRAME:015477/0572Effective date: 20021004Aug 6, 2008FPAYFee paymentYear of fee payment: 4Aug 2, 2012FPAYFee paymentYear of fee payment: 8RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services