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公开(公告)号：US10180088B2
公开(公告)日：2019-01-15
申请号：US15161203
申请日：2016-05-21
Applicant: BorgWarner Inc.
Inventor： Chad McCloy
Abstract: An electric phaser for dynamically adjusting a rotational relationship of a camshaft with respect to an engine crankshaft of an internal combustion engine includes an electric motor and a tapered roller drive. The tapered roller drive includes a sun, rollers, a carrier, at least one ring, and at least one load generator providing an axial load. The rollers are maintained in rolling engagement with the sun and the ring without the use of teeth. In some embodiments, the tapered roller drive is based on a fixed-sun design. In other embodiments, the tapered roller drive is based on a split ring design.
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公开(公告)号：US20180230866A1
公开(公告)日：2018-08-16
申请号：US15434438
申请日：2017-02-16
Applicant: BorgWarner Inc.
Inventor： Marco Caputo , Brian Kenyon , Chad McCloy , Chris Thomas
CPC classification number: F01L1/3442 , F01L1/024 , F01L2001/34469 , F01L2103/00
Abstract: A pulley for phaser including a toothed outer circumference for accepting a drive force; an inner circumference with at least a first set of lands extending towards a center of the pulley and spaced apart along the inner circumference of the pulley; and an axial retaining feature on the first set of lands for interaction with a corresponding retaining feature of a housing press fit within the inner circumference with the pulley, axially retaining the housing within the pulley.
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公开(公告)号：US11781451B2
公开(公告)日：2023-10-10
申请号：US17310906
申请日：2020-03-03
Applicant: BORGWARNER, INC.
Inventor： Douglas W. Perry , Chad McCloy
CPC classification number: F01L1/352 , F16H1/2863 , F16H1/32 , F01L2810/03 , F16H2001/327
Abstract: An engine variable camshaft timing (VCT) phaser assembly is equipped in an internal combustion engine (ICE) to adjust the rotation of the engine's camshaft relative to the engine's crankshaft. The adjustments advance and retard the opening and closing movements of the engine's intake and exhaust valves. An electric motor and a planetary gear set work together amid use of the VCT phaser assembly. The planetary gear set can include two or more ring gears, planet gears, and a sun gear. A backlash condition sometimes experienced in previous VCTs is minimized in the VCT phaser assembly by one or more springs that urge the planet gears into engagement with the ring gears.
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公开(公告)号：US11542842B2
公开(公告)日：2023-01-03
申请号：US17328288
申请日：2021-05-24
Applicant: BorgWarner Inc.
Inventor： Chad McCloy , Daniel Brown
Abstract: An electrically-actuated variable camshaft timing (VCT) device, comprising: an input configured to receive rotational force from an electric motor; an output configured to couple with a camshaft of an internal combustion engine; a planet gear having radially outwardly extending gear teeth configured to engage ring gears and a radially-inwardly-facing surface; a planet pin, supporting the planet gear, having an outer surface and an axis of rotation about which the planet gear rotates; and a spring applying force in a substantially axial direction along the axis of rotation that moves the planet gear in a radial direction.
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公开(公告)号：US11280228B2
公开(公告)日：2022-03-22
申请号：US16922180
申请日：2020-07-07
Applicant: BorgWarner, Inc.
Inventor： Chad McCloy
Abstract: A variable camshaft timing (VCT) assembly includes an independent VCT device that can couple with a first camshaft and change an angular position of the first camshaft relative to the angular position of a crankshaft. The independent VCT device has a stator and an output fixedly coupled with the first camshaft. The VCT assembly also includes a dependent VCT device that angularly adjusts a second camshaft in response to angular adjustment of the first camshaft. The dependent VCT device has a camshaft link coupled with the output of the independent VCT device; the camshaft link has a slot positioned radially outwardly from an axis of camshaft rotation. The independent VCT device also includes a planetary gear link having a geared surface configured to engage a geared surface coupled to the second camshaft, a planetary gear pin received by the slot of the camshaft link, and a planetary gear pivot; angular movement of the output relative to the stator moves the planetary gear pin relative to the slot and the planetary gear link about the pivot thereby transmitting angular motion of the first camshaft to the second camshaft through the planetary gear link.
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Patent Agency Ranking
公开(公告)号：US20220010700A1
公开(公告)日：2022-01-13
申请号：US16922180
申请日：2020-07-07
Applicant: BorgWarner, Inc.
Inventor： Chad McCloy
Abstract: A variable camshaft timing (VCT) assembly includes an independent VCT device that can couple with a first camshaft and change an angular position of the first camshaft relative to the angular position of a crankshaft. The independent VCT device has a stator and an output fixedly coupled with the first camshaft. The VCT assembly also includes a dependent VCT device that angularly adjusts a second camshaft in response to angular adjustment of the first camshaft. The dependent VCT device has a camshaft link coupled with the output of the independent VCT device; the camshaft link has a slot positioned radially outwardly from an axis of camshaft rotation. The independent VCT device also includes a planetary gear link having a geared surface configured to engage a geared surface coupled to the second camshaft, a planetary gear pin received by the slot of the camshaft link, and a planetary gear pivot; angular movement of the output relative to the stator moves the planetary gear pin relative to the slot and the planetary gear link about the pivot thereby transmitting angular motion of the first camshaft to the second camshaft through the planetary gear link.
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公开(公告)号：US20200080449A1
公开(公告)日：2020-03-12
申请号：US16567606
申请日：2019-09-11
Applicant: BorgWarner, Inc.
Inventor： Chad McCloy , Braman Wing
IPC: F01L1/344
Abstract: An electrically-actuated camshaft phaser including an electrically-actuated lock that includes a planetary gear assembly having a camshaft ring gear configured to be connected to a camshaft, a sprocket ring gear configured to receive rotational input from a crankshaft, and one or more planet gears engaging the camshaft ring gear and the sprocket ring gear, wherein the planetary gear assembly changes the angular position of the camshaft relative to the crankshaft; an electric motor, coupled to the planetary gear assembly, and a solenoid, wherein the electric motor controls the relative angular position of the crankshaft relative to the camshaft and the solenoid selectively moves a mechanical connection into locking engagement thereby preventing relative movement between the camshaft relative to the crankshaft.
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公开(公告)号：US20200025044A1
公开(公告)日：2020-01-23
申请号：US16036982
申请日：2018-07-17
Applicant: BORGWARNER, INC.
Inventor： Chad McCloy
IPC: F01L1/344
Abstract: A hydrostatic camshaft phaser system includes a hydraulically-actuated camshaft phaser with a rotor; and a stator housing that receives the rotor and includes an advancing chamber and a retarding chamber defined at least partially by the vane; and a variable displacement pump, in fluid communication with the hydraulically-actuated camshaft phaser, comprising a first chamber in fluid communication with the advancing chamber and a second chamber in fluid communication with the retarding chamber; the first chamber receives fluid from a first non-continuous groove extending along a camshaft surface or a bearing surface and the second chamber receives fluid from a second non-continuous groove extending along the camshaft surface or the bearing surface during a first portion of camshaft rotation, and the first chamber receives fluid from the second non-continuous groove and the second chamber receives fluid from the first non-continuous groove during a second portion of camshaft rotation.
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公开(公告)号：US10514068B2
公开(公告)日：2019-12-24
申请号：US16050571
申请日：2018-07-31
Applicant: BorgWarner Inc.
Inventor： Chad McCloy , Daniel Brown , Shawn Blackmur
Abstract: A variable camshaft timing device adjusts phase between a camshaft and a crankshaft and includes a first ring gear configured to connect to the camshaft and rotate about a center axis, having a plurality of radially-inwardly facing gear teeth; a second ring gear axially spaced from the first ring gear, configured to receive rotational input from the crankshaft and rotate about the center axis, having a plurality of radially-inwardly facing gear teeth; a planetary gear assembly including one or more planet gears that are configured for rotation by an electric motor and engage the first ring gear and the second ring gear through the planet gear(s); and a cushioned stop configured to transmit energy between the planetary gear assembly and a planetary gear stop attached to a sprocket or a camshaft plate.
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公开(公告)号：US10233999B2
公开(公告)日：2019-03-19
申请号：US15139581
申请日：2016-04-27
Applicant: BorgWarner Inc.
Inventor： Chad McCloy , Michael Close
Abstract: An electric phaser dynamically adjusting the rotational relationship of a camshaft of an internal combustion engine with respect to an engine crankshaft includes an electric motor and a planetary drive. In some embodiments, the planetary drive includes a sun gear, planet gears, a sprocket ring gear driven by the engine crankshaft, a camshaft ring gear rotating with the camshaft, a carrier, a lever arm, and a load generator. The lever arm is rotatably attached to at least one planet gear and pivotably attached to the carrier at a pivot point on the carrier located off-axis from the sun axis. The load generator is coupled to the carrier and applies a torque load to the lever arm to reduce backlash in the split ring planetary drive. The difference between the number of camshaft ring gear teeth and sprocket ring gear teeth is a multiple of the number of planet gears.
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