Invention Grant
- Patent Title: Off-axis-loaded anti-backlash planetary drive for e-phaser
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Application No.: US15139581Application Date: 2016-04-27
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Publication No.: US10233999B2Publication Date: 2019-03-19
- Inventor: Chad McCloy , Michael Close
- Applicant: BorgWarner Inc.
- Applicant Address: US MI Auburn Hills
- Assignee: BorgWarner, Inc.
- Current Assignee: BorgWarner, Inc.
- Current Assignee Address: US MI Auburn Hills
- Main IPC: F16H1/28
- IPC: F16H1/28 ; F01L1/344 ; F01L9/04 ; F01L1/352

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.
Public/Granted literature
- US20160327124A1 OFF-AXIS-LOADED ANTI-BACKLASH PLANETARY DRIVE FOR E-PHASER Public/Granted day:2016-11-10
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