公开(公告)号：US11946395B2

公开(公告)日：2024-04-02

申请号：US18107957

申请日：2023-02-09

Applicant: BorgWarner Inc.

Inventor： Anand Barve ,  Timothy Wilton Kunz

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426

Abstract: A variable cam timing phaser includes a housing disposed about an axis and having an inner housing surface defining a housing interior. The variable cam timing phaser includes a rotor moveable between an advance position and a retard position. The rotor includes a hub and a vane, with the rotor and the housing defining a chamber. The vane further defines the chamber into an advance chamber and a retard chamber. The variable cam timing phaser also includes a control valve assembly including a valve housing and a control piston. The variable cam timing phaser also includes a chamber biasing assembly disposed in one of the advance and the retard chambers and configured to bias the rotor into a predetermined position between the advance and the retard positions. The chamber biasing assembly includes a chamber piston, a chamber biasing member, and a chamber check valve.

公开(公告)号：US20230258109A1

公开(公告)日：2023-08-17

申请号：US18107957

申请日：2023-02-09

Applicant: BorgWarner Inc.

Inventor： Anand Barve ,  Timothy Wilton Kunz

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L2001/34426

Abstract: A variable cam timing phaser includes a housing disposed about an axis and having an inner housing surface defining a housing interior. The variable cam timing phaser includes a rotor moveable between an advance position and a retard position. The rotor includes a hub and a vane, with the rotor and the housing defining a chamber. The vane further defines the chamber into an advance chamber and a retard chamber. The variable cam timing phaser also includes a control valve assembly including a valve housing and a control piston. The variable cam timing phaser also includes a chamber biasing assembly disposed in one of the advance and the retard chambers and configured to bias the rotor into a predetermined position between the advance and the retard positions. The chamber biasing assembly includes a chamber piston, a chamber biasing member, and a chamber check valve.