Patents by Inventor Dengfu Zhang

Dengfu Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10247256
    Abstract: A clutch for an automatic transmission includes a clutch pack having a first set of friction disks interleaved with a second set of friction disks. The clutch further includes an annulus having an outer surface connected to the first friction disks and an inner surface. The annulus defines oil holes extending from the inner surface to the outer surface to permit oil to flow from the inner surface to the clutch pack. Air passageways are defined in the annulus and extend through the annulus permitting air to flow from the inner surface to the clutch pack to reduce drag losses between the first and second sets of disks. Each of the air passageways have an entrance that is radially inboard of an entrance of each of the oil holes.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: April 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Dengfu Zhang, David Beck
  • Publication number: 20190048991
    Abstract: A transmission assembly including a housing, an electric motor, and a baffle is provided. The housing may include first and second drainage channels. The electric motor may be disposed within the housing adjacent the drainage channels and a torque converter. The baffle may be disposed within the housing upon a housing inner surface, and may define an opening to the first and second drainage channels. The baffle may include a baffle flange sized for positioning adjacent the torque converter to minimize contact of oil within the housing to the torque converter. The housing may define first and second partition walls each partially extending over one of the first and second drainage channels. The baffle may further include first and second seal features each disposed at one of two baffle ends.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 14, 2019
    Applicant: Ford Global Technologies, LLC
    Inventors: Dengfu Zhang, Mark Steward, William Riley, Brian Richard Light
  • Publication number: 20190016586
    Abstract: An apparatus is provided. The apparatus may include an elongated shaft including a passage terminating at a nozzle including a dispersion plate and tapered sidewalls between the dispersion plate and the elongated shaft. The tapered side walls may define a single opening, an outer surface of the sidewalls may define a tapered exit for the opening, an inner surface of the sidewalls may define a non-tapered entrance into the opening, the nozzle is sized to be received by a transmission case inlet, and an internal diameter of the passage is less than the tapered exit.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Inventors: Dengfu ZHANG, Dongmin LI, Vignesh SURESH, Chin-Yuan PERNG
  • Patent number: 10119540
    Abstract: A sliding vane pump includes a passageway that fluidly connects one or more pumping chambers to a side chamber. The passageway pressurizes the side chamber. This fluid pressure exerts a force that counteracts the force caused by pressure differences between the outlet pumping chambers and the inlet pumping chambers. At high speed, part of the side chamber is pressurized by the smallest volume outlet pumping chamber while another portion of the side chamber is pressurized by the largest volume outlet chamber. This results in a force counteracting an uncommanded displacement decrease of the pump.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 6, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Dengfu Zhang, Robert J. Miller, Derek Kinch, Mark Davis, Akhter Zaman
  • Publication number: 20180238434
    Abstract: A baffle for a transmission of a vehicle is provided. The transmission includes a gearbox that outputs torque to a differential, which distributes the torque to the wheels. A chain transfers the torque from the transmission to the differential. A baffle is provided adjacent to, but spaced from, the chain to contain and direct at least some of the lubricating fluid that the chain comes in contact with. The baffle has a base with a planar side surface. A flange extends from the base, and extends radially about part of the transmission output and the differential input to follow the path of the chain. One end of the flange is provided with an opening to direct fluid through the opening, out of the baffle and into other regions of the transmission such as the transmission sump. This inhibits buildup of fluid in the sump of the baffle.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Inventors: Dengfu ZHANG, Mark STEWARD, Lisa JAMIESON
  • Publication number: 20180238435
    Abstract: A snubber for an automotive transmission includes a generally flat surface configured to limit radially-outward movement of a drive member that transfers torque from a transmission gearbox output to a differential input. A mouth of the snubber is fluidly coupled to an internal cavity that capturing transmission fluid as the fluid is moved around due to movement of the drive member. A wing of the snubber extends from the generally flat surface toward the drive member. The wing has a hollow interior fluidly coupled to the internal cavity. A concave outer surface is located outside of and adjacent to the mouth. The concave surface deflects a portion of the fluid, preventing that portion from entering the mouth. This increases the flow of fluid away from the drive member which can lead to drag.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Inventors: Richard Simon BOEREMA, Vijay Kumar CHIMAKURTHY, Mark STEWARD, Dengfu ZHANG
  • Publication number: 20180163790
    Abstract: A clutch for an automatic transmission includes a clutch pack having a first set of friction disks interleaved with a second set of friction disks. The clutch further includes an annulus having an outer surface connected to the first friction disks and an inner surface. The annulus defines oil holes extending from the inner surface to the outer surface to permit oil to flow from the inner surface to the clutch pack. Air passageways are defined in the annulus and extend through the annulus permitting air to flow from the inner surface to the clutch pack to reduce drag losses between the first and second sets of disks. Each of the air passageways have an entrance that is radially inboard of an entrance of each of the oil holes.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 14, 2018
    Inventors: Dengfu ZHANG, David BECK
  • Publication number: 20180106299
    Abstract: According to embodiments of the present disclosure, a clutch pack is provided. The clutch pack includes a first set of clutch plates arranged in an alternating configuration with a second set of clutch plates. The first set of clutch plates has a plurality of friction pads made of friction material and defining channels in the friction material. The channels are configured to allow lubricant to flow between the friction pads. Each of the friction pads defines a groove in the friction pad. The groove is disconnected from the channels. The groove thereby creates a flow induced high pressure region forcing the first set of clutch plates to a center between the second set of clutch plates.
    Type: Application
    Filed: October 14, 2016
    Publication date: April 19, 2018
    Inventors: DENGFU ZHANG, JAU-WEN TSENG, DAVID BECK
  • Patent number: 9810311
    Abstract: A vehicle axle includes a housing defining a sump, a gear assembly and a baffle. The gear assembly includes a ring gear disposed within the housing. The ring gear is configured to pump fluid throughout the housing. A pinion gear is meshed with the ring gear. The baffle is disposed within the sump and connected to the housing. The baffle has a first part being configured to control fluid flow across the ring gear and a second part attached to the first part. The second part is configured to control fluid flow across the pinion gear.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: November 7, 2017
    Assignee: Ford Global Technologies, Inc.
    Inventors: Dengfu Zhang, Michael Carter, Mark Steward, Marc Thomas Wilkins
  • Publication number: 20170167545
    Abstract: A clutch pack includes a first set of clutch plates and a second set of clutch plates. The first set of clutch plates are arranged in an alternating configuration with the second set of clutch plates. The first set of clutch plates has radially outward extending teeth. The second set of clutch plates has radially inward extending teeth that define channels that are configured to allow air to flow into the clutch pack in an axial direction such that lubrication fluid located between adjacent clutch plates is channeled radially outward.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 15, 2017
    Inventors: Dengfu ZHANG, Jau-Wen TSENG, Chin-Yuan PERNG
  • Publication number: 20170159657
    Abstract: A sliding vane pump includes a passageway that fluidly connects one or more pumping chambers to a side chamber. The passageway pressurizes the side chamber. This fluid pressure exerts a force that counteracts the force caused by pressure differences between the outlet pumping chambers and the inlet pumping chambers. At high speed, part of the side chamber is pressurized by the smallest volume outlet pumping chamber while another portion of the side chamber is pressurized by the largest volume outlet chamber. This results in a force counteracting an uncommanded displacement decrease of the pump.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Inventors: Dengfu Zhang, Robert J. Miller, Derek Kinch, Mark Davis, Akhter Zaman