公开(公告)号：US20250154886A1

公开(公告)日：2025-05-15

申请号：US18388982

申请日：2023-11-13

Applicant: BorgWarner Inc.

Inventor： Michael Smart ,  John C. Bulzacchelli

IPC: F01L1/344

Abstract: A variable cam timing phaser includes a housing and a rotor defining a plurality of chambers, a first end plate, and a second end plate. The variable cam timing phaser additionally includes at least one air vent located at a center of rotation region of at least one of the housing, the rotor, the first end plate, or the second end plate. The at least one air vent is fluidly coupled to the plurality of chambers and is configured to vent air from the plurality of chambers. The variable cam timing phaser also includes a reservoir fluidly coupled to the at least one air vent. The reservoir is configured to retain hydraulic fluid and is configured to reduce air from being ingested through the at least one air vent and into the plurality of chambers.

公开(公告)号：US12129925B2

公开(公告)日：2024-10-29

申请号：US18548434

申请日：2021-03-02

Applicant: BorgWarner, Inc.

Inventor： Fenton O'Shea ,  Michael Smart

IPC: F16H7/08

CPC classification number: F16H7/0836 ,  F16H2007/0808 ,  F16H2007/0814

Abstract: One or more radial holes in the body of the hydraulic tensioner are used to control outward hydraulic flow restriction from the hydraulic pressure chamber within the piston. The one or more holes can be arranged in different ways to allow the piston position to alter the outward oil flow of the tensioner.

公开(公告)号：US20240229903A9

公开(公告)日：2024-07-11

申请号：US18548434

申请日：2021-03-02

Applicant: BorgWarner, Inc.

Inventor： Fenton O'Shea ,  Michael Smart

IPC: F16H7/08

CPC classification number: F16H7/0836 ,  F16H2007/0808 ,  F16H2007/0814

Abstract: One or more radial holes in the body of the hydraulic tensioner are used to control outward hydraulic flow restriction from the hydraulic pressure chamber within the piston. The one or more holes can be arranged in different ways to allow the piston position to alter the outward oil flow of the tensioner.

公开(公告)号：US20240133451A1

公开(公告)日：2024-04-25

申请号：US18548434

申请日：2021-03-02

Applicant: BorgWarner, Inc.

Inventor： Fenton O'Shea ,  Michael Smart

IPC: F16H7/08

CPC classification number: F16H7/0836 ,  F16H2007/0808 ,  F16H2007/0814

Abstract: One or more radial holes in the body of the hydraulic tensioner are used to control outward hydraulic flow restriction from the hydraulic pressure chamber within the piston. The one or more holes can be arranged in different ways to allow the piston position to alter the outward oil flow of the tensioner.