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公开(公告)号：US20190271384A1
公开(公告)日：2019-09-05
申请号：US15909156
申请日：2018-03-01
Applicant: GM Global Technology Operations LLC
Inventor： Kenneth C. Tesner , David J. Varda
IPC: F16H57/027 , B01D45/06 , B01D53/26 , F16K17/04 , F16K24/04
Abstract: A transmission having a pressure controlled vent system, including a vent tube configured to engage a transmission such that a first opening of the vent tube is in fluid communication with an upper portion of a transmission cavity, a second end defining a second opening configured to be in fluid communication with an external atmosphere, and a bifurcated portion between the first end and the second end. The bifurcated portion includes a first tube segment and a second tube segment in parallel with the first tube segment. A pressure relief valve disposed in-line within the first tube segment and a vacuum relief valve disposed in-line within the second tube segment. The pressure relief valve cooperates with the vacuum relief valve to maintain a predetermined range of pressure differential between the first opening and the second opening. The vent tube may also include a moisture and/or a transmission fluid separator.
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公开(公告)号：US09772027B2
公开(公告)日：2017-09-26
申请号：US14878289
申请日：2015-10-08
Applicant: GM Global Technology Operations LLC
Inventor： Christopher B. Preston , David J. Varda , Mohammad A. Hotait
IPC: F16H57/04
CPC classification number: F16H57/0423 , F16H57/0409 , F16H57/0457 , F16H57/0483
Abstract: A variable baffle for controlling a flow of oil at a gear mesh includes a first baffle member fixed proximate to the gear teeth of a first rotating gear. A second baffle member is rotatably connected to the first baffle member. A third baffle member is fixed proximate to a second rotating gear and aligned with the second baffle member when the second baffle member is in a closed position. A rotating member rotatably connects the second baffle member to the first baffle member. The second baffle member is movable away from the closed position to an open position when the force of a fluid expelled from the gear teeth of the first rotating gear exceeds a force applied to the rotating member normally acting to move the second baffle member toward the closed position.
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公开(公告)号：US10948068B2
公开(公告)日：2021-03-16
申请号：US15909156
申请日：2018-03-01
Applicant: GM Global Technology Operations LLC
Inventor： Kenneth C. Tesner , David J. Varda
IPC: B01D46/00 , F16H57/027 , B01D45/06 , F16K24/04 , F16K17/04 , B01D53/26 , F01N3/035 , F01N3/022 , C04B38/00 , F16K24/00 , F16K15/14 , F16H57/00 , F16K17/02 , F16H57/04
Abstract: A transmission having a pressure controlled vent system, including a vent tube configured to engage a transmission such that a first opening of the vent tube is in fluid communication with an upper portion of a transmission cavity, a second end defining a second opening configured to be in fluid communication with an external atmosphere, and a bifurcated portion between the first end and the second end. The bifurcated portion includes a first tube segment and a second tube segment in parallel with the first tube segment. A pressure relief valve disposed in-line within the first tube segment and a vacuum relief valve disposed in-line within the second tube segment. The pressure relief valve cooperates with the vacuum relief valve to maintain a predetermined range of pressure differential between the first opening and the second opening. The vent tube may also include a moisture and/or a transmission fluid separator.
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公开(公告)号：US20170016527A1
公开(公告)日：2017-01-19
申请号：US14799233
申请日：2015-07-14
Applicant: GM Global Technology Operations LLC
Inventor： David J. Varda , JAMES D. HENDRICKSON , STEVEN P. MOORMAN
IPC: F16H57/04
CPC classification number: F16H57/0401 , F16H57/0435
Abstract: A torque converter clutch (TCC) release fluid lubrication system for a motor vehicle transmission includes a first fluid line, a second fluid line and a third fluid line. The first fluid line supplies TCC apply fluid to the TCC. The second fluid line receives TCC release fluid from the TCC. And the third fluid line supplies a first lubrication fluid to the transmission. The TCC release fluid and the first lubrication fluid combine into a second lubrication fluid that is fed into the transmission.
Abstract translation: 用于机动车辆变速器的变矩器离合器（TCC）释放流体润滑系统包括第一流体管线，第二流体管线和第三流体管线。 第一条流体管线向TCC施加流体。 第二流体管线从TCC接收TCC释放液。 并且第三流体管路向变速器提供第一润滑流体。 TCC释放流体和第一润滑流体组合成被馈送到变速器中的第二润滑流体。
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Patent Agency Ranking
公开(公告)号：US20190145295A1
公开(公告)日：2019-05-16
申请号：US15814881
申请日：2017-11-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Robert Parrish , Vijay A. Neelakantan , Michael A. Fisher , David J. Varda
Abstract: A fluid management system, or flow control system, for an automotive propulsion system is provided. The system includes a housing defining a sump configured to collect a volume of liquid and gaseous fluid and a pump configured to pump fluid from the sump. The pump defines a pump inlet and a pump outlet. A conduit is in fluid communication with the pump outlet. A passive valve is disposed within the conduit, the conduit defining a conduit outlet downstream of the passive valve, and the conduit further defining an orifice between the pump and the passive valve. The passive valve allows hydraulic fluid to flow past the valve, while substantially preventing air from flowing past the passive valve. The air is instead bled out through the orifice, along with some of the hydraulic fluid.
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公开(公告)号：US09863522B2
公开(公告)日：2018-01-09
申请号：US14799233
申请日：2015-07-14
Applicant: GM Global Technology Operations LLC
Inventor： David J. Varda , James D. Hendrickson , Steven P. Moorman
IPC: F16H57/04
CPC classification number: F16H57/0401 , F16H57/0435
Abstract: A torque converter clutch (TCC) release fluid lubrication system for a motor vehicle transmission includes a first fluid line, a second fluid line and a third fluid line. The first fluid line supplies TCC apply fluid to the TCC. The second fluid line receives TCC release fluid from the TCC. And the third fluid line supplies a first lubrication fluid to the transmission. The TCC release fluid and the first lubrication fluid combine into a second lubrication fluid that is fed into the transmission.
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公开(公告)号：US11662013B2
公开(公告)日：2023-05-30
申请号：US17030885
申请日：2020-09-24
Applicant: GM Global Technology Operations LLC
Inventor： Goro Tamai , Robert P. McCleary , Marc R. Yarnall , David J. Varda
CPC classification number: F16H57/0421 , F16H57/0426 , F16H57/0436 , F16H57/0457 , F16H57/0465 , F16H57/0476 , H02K1/32 , H02K7/003 , H02K7/116 , H02K9/19
Abstract: A vehicle stalactite passive lubrication system includes a drive unit having an electric motor and a gear. A sump has a sump extension. A lubricant is collected in the sump for gravity flow into the sump extension. A stalactite member is fixed to the drive unit and is positioned above an element to be filled with a fluid, lubricated or cooled. The stalactite member is directed downwardly toward the sump with the lubricant splashed by gear rotation collected on neighboring walls and the stalactite member and directed downwardly by gravity into the sump or target element. The stalactite member includes: a drip edge oriented at an angle to a horizontal plane; and a tip defining an end of the drip edge. The angle is selected to direct the lubricant to discharge off the stalactite member at the tip as a lubricant stream into the sump or target element.
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公开(公告)号：US20220090673A1
公开(公告)日：2022-03-24
申请号：US17030885
申请日：2020-09-24
Applicant: GM Global Technology Operations LLC
Inventor： Goro Tamai , Robert P. McCleary , Marc R. Yarnall , David J. Varda
Abstract: A vehicle stalactite passive lubrication system includes a drive unit having an electric motor and a gear. A sump has a sump extension. A lubricant is collected in the sump for gravity flow into the sump extension. A stalactite member is fixed to the drive unit and is positioned above an element to be filled with a fluid, lubricated or cooled. The stalactite member is directed downwardly toward the sump with the lubricant splashed by gear rotation collected on neighboring walls and the stalactite member and directed downwardly by gravity into the sump or target element. The stalactite member includes: a drip edge oriented at an angle to a horizontal plane; and a tip defining an end of the drip edge. The angle is selected to direct the lubricant to discharge off the stalactite member at the tip as a lubricant stream into the sump or target element.
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公开(公告)号：US20170102064A1
公开(公告)日：2017-04-13
申请号：US14878289
申请日：2015-10-08
Applicant: GM Global Technology Operations LLC
Inventor： CHRISTOPHER B. PRESTON , David J. Varda , Mohammad A. Hotait
IPC: F16H57/04
CPC classification number: F16H57/0423 , F16H57/0409 , F16H57/0457 , F16H57/0483
Abstract: A variable baffle for controlling a flow of oil at a gear mesh includes a first baffle member fixed proximate to the gear teeth of a first rotating gear. A second baffle member is rotatably connected to the first baffle member. A third baffle member is fixed proximate to a second rotating gear and aligned with the second baffle member when the second baffle member is in a closed position. A rotating member rotatably connects the second baffle member to the first baffle member. The second baffle member is movable away from the closed position to an open position when the force of a fluid expelled from the gear teeth of the first rotating gear exceeds a force applied to the rotating member normally acting to move the second baffle member toward the closed position.
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