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：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.

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：US09771839B2

公开(公告)日：2017-09-26

申请号：US15321771

申请日：2015-06-22

Applicant: BorgWarner Inc.

Inventor： Braman C. Wing ,  Daniel Brown

IPC: F01L1/34 ,  F01L1/352 ,  F01L1/02 ,  F01L1/053

CPC classification number: F01L1/352 ,  F01L1/024 ,  F01L1/053 ,  F01L2001/0537

Abstract: A system (44) for controlling camshaft (28) phase in an engine (20) with a crankshaft (26), including: an actuator (42) driving a phaser (38) attached to the camshaft (28). The phaser (38) has a first portion (46) in communication with the crankshaft (26), a second portion (48) attached to the camshaft (28) and in communication with the first portion (46), and a third portion (50) attached to the actuator (42) and in communication with the second portion (48). One portion includes a receiver (52), and another portion includes a lock (54) having: a first position (78) where the portions with the receiver (52) and lock (54) can rotate with respect to each other; and a second position (80) where the portions with the receiver (52) and lock (54) are coupled. The lock (54) moves between positions in response to predetermined torque differential between the actuator (42) and camshaft (28).