公开(公告)号：US12000315B2

公开(公告)日：2024-06-04

申请号：US17842898

申请日：2022-06-17

Applicant: BorgWarner Inc.

Inventor： Braman C. Wing ,  Keith Feldt ,  Adam Bruce ,  Chris Thomas

IPC: F01L1/34 ,  F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426 ,  F01L2001/34446 ,  F01L2001/3445

Abstract: A variable cam timing phaser of a variable cam timing system includes a housing and a rotor moveable with respect to the housing. The rotor and the housing define advance and retard chambers. The variable cam timing phaser also includes a control valve assembly. The control valve assembly includes a valve housing defining a valve housing interior, a supply port, first and second working ports, and an exhaust port. The control valve assembly also includes a piston moveable for controlling flow of the hydraulic fluid through the valve housing interior. The exhaust port is fluidly connectable with a sump through a vent path that is defined by at least one of the valve housing and the rotor. The vent path is configured to prevent air from being sucked into the variable cam timing phaser through the vent path.

公开(公告)号：US20240263570A1

公开(公告)日：2024-08-08

申请号：US18636424

申请日：2024-04-16

Applicant: BorgWarner Inc.

Inventor： Braman C. Wing ,  Keith Feldt ,  Adam Bruce ,  Chris Thomas

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426 ,  F01L2001/34446 ,  F01L2001/3445

Abstract: A variable cam timing phaser of a variable cam timing system includes a housing and a rotor moveable with respect to the housing. The rotor and the housing define advance and retard chambers. The variable cam timing phaser also includes a control valve assembly. The control valve assembly includes a valve housing defining a valve housing interior, a supply port, first and second working ports, and an exhaust port. The control valve assembly also includes a piston moveable for controlling flow of the hydraulic fluid through the valve housing interior. The exhaust port is fluidly connectable with a sump through a vent path that is defined by at least one of the valve housing and the rotor. The vent path is configured to prevent air from being sucked into the variable cam timing phaser through the vent path.

公开(公告)号：US20230366334A1

公开(公告)日：2023-11-16

申请号：US18197997

申请日：2023-05-16

Applicant: BorgWarner Inc.

Inventor： Adam Bruce ,  Keith Feldt ,  Braman Wing

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34433

Abstract: A hydraulic variable camshaft timing (VCT) assembly including a stator having at least one fluid chamber; and a rotor, received by and angularly displaceable relative to the stator, having at least one vane positioned within the fluid chamber extending radially outwardly from a hub, and a hydraulic switch assembly positioned in the rotor to regulate a flow of fluid between an advancing chamber and a retarding chamber through the vane.

公开(公告)号：US20220290587A1

公开(公告)日：2022-09-15

申请号：US17828474

申请日：2022-05-31

Applicant: BorgWarner, Inc.

Inventor： Brian Kenyon ,  Adam Bruce

IPC: F01L1/344

Abstract: A variable cam timing phaser has a rotor assembly with a central hub defining an axial bore and an interface groove with a first seal land, a second seal land and a single undercut area. A width of the first seal land is greater than a width of the second seal land. The single undercut area is in fluid communication with an axial undercut passage connected to a radial undercut passage within the rotor assembly. A clamping interface is between the camshaft and the rotor assembly, such that a seal is present between first seal land and the first end of the camshaft, and the second seal land and the first end of the camshaft. Fluid from a supply, flows into the passage of the camshaft to the single undercut area, through the axial undercut passage, the radial undercut passage to a passage within the rotor assembly.

公开(公告)号：US12157199B2

公开(公告)日：2024-12-03

申请号：US16792529

申请日：2020-02-17

Applicant: BorgWarner Inc.

Inventor： Adam Bruce ,  Brian Kenyon ,  Philippe Alain Clayton

IPC: B24B19/02 ,  B24B5/22 ,  B24B41/06 ,  B24B5/35 ,  B24B27/00 ,  F01L1/344

Abstract: A cylindrical workpiece with a helical axial groove allowing for centerless grinding which has an angular overlap around the outer circumference on the body of the workpiece. The angular overlap ensures continuous tangential contact with the grinding wheels as the workpiece is rotated.

公开(公告)号：US20230008355A1

公开(公告)日：2023-01-12

申请号：US17842898

申请日：2022-06-17

Applicant: BorgWarner Inc.

Inventor： Braman C. Wing ,  Keith Feldt ,  Adam Bruce ,  Chris Thomas

IPC: F01L1/344

Abstract: A variable cam timing phaser of a variable cam timing system includes a housing and a rotor moveable with respect to the housing. The rotor and the housing define advance and retard chambers. The variable cam timing phaser also includes a control valve assembly. The control valve assembly includes a valve housing defining a valve housing interior, a supply port, first and second working ports, and an exhaust port. The control valve assembly also includes a piston moveable for controlling flow of the hydraulic fluid through the valve housing interior. The exhaust port is fluidly connectable with a sump through a vent path that is defined by at least one of the valve housing and the rotor. The vent path is configured to prevent air from being sucked into the variable cam timing phaser through the vent path.