公开(公告)号：US20170145873A1

公开(公告)日：2017-05-25

申请号：US15315871

申请日：2015-05-29

Applicant: BorgWarner Inc.

Inventor： Christopher J. PLUTA ,  Michael MARSH ,  Michael GRIEB

IPC: F01L1/352

CPC classification number: F01L1/352 ,  F01L2001/3522

Abstract: A cam phaser (30, 130, 230) dynamically adjusts a rotational relationship of a camshaft (32) of an internal combustion engine with respect to an engine crankshaft operably connected with a phaser sprocket (42, 142, 242). The cam phaser (30, 130, 230) can include a planetary gear assembly having a ring gear (34, 134, 234) driven by the phaser sprocket (42, 142, 242), a planetary gear carrier (36, 136, 236) connected to the camshaft (32), a sun gear (38, 138, 238), and at least one rotatable planetary gear (40, 140, 240). The cam phaser (30, 130, 230) 236 can include a sprocket housing (44, 144, 244) connected with the phaser sprocket (42, 142, 242) and operable for connection with the ring gear (34, 134, 234), a cover plate (46, 146, 246) secured to the carrier (36, 136, 236), and a adapter (48) connected between the sun gear (38, 138, 238) and an electric motor (47) for changing an angular position of the sun gear (38, 138, 238) and adjustably varying a cam phase position of

公开(公告)号：US20180073598A1

公开(公告)日：2018-03-15

申请号：US15701884

申请日：2017-09-12

Applicant: BorgWarner Inc.

Inventor： Christopher J. PLUTA ,  Michael MARSH

IPC: F16H1/28 ,  F16H57/08 ,  F16H57/12

CPC classification number: F16H1/2863 ,  F01L1/352 ,  F01L2810/04 ,  F01L2820/032 ,  F16H57/082 ,  F16H57/12 ,  F16H2057/125 ,  F16H2057/127

Abstract: A planetary gear assembly (30) and method of assembly in an electric camshaft phaser (20) with a split ring gear including a drive-side ring gear portion (32) rotatable by an engine crankshaft and an output-side ring gear portion (34) that can be connected to a camshaft (22). A plurality of rotatable planetary gears (36a, 36b, 36c) can be interposed between the split ring gear and the sun gear (28). The output-side ring gear portion (34) can have a different number of teeth than the drive-side ring gear portion (32) by a value corresponding to a multiple of the number of planetary gears (36a, 36b, 36c). A compliant planetary gear carrier (40, 140) can support the plurality of planetary gears (36a, 36b, 36c) allowing variance of a normally equidistant distance between separate spaced rotational axes of at least two of the planetary gears (36a, 36b, 36c) to selectively compensate for mechanical tolerances of the drive-side ring gear portion (32) and the output-side ring gear portion (34) of the split ring gear.