Jongmin Etal Lee

US Patent:

6439179, Aug 27, 2002

Filed:

Jun 14, 2001

Appl. No.:

09/881622

Inventors:

Nick J. Hendriksma - SE. Grand Rapids MI
Jongmin Lee - Pittsford NY

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1300

US Classification:

123 9016, 123 9042, 123198 F

Abstract:

A roller finger follower includes an elongate body having a first side member and a second side member. A bracket having first and second sides is associated with the body. The first side of the bracket is disposed adjacent an inside surface of the first side member of the body. The second side of the bracket is disposed adjacent an inside surface of the second side member of the body. A roller is disposed between the first and second sides of the bracket. The roller defines a shaft orifice therethrough. An elongate hollow shaft extends through the shaft orifice and couples the roller to the bracket. A locking pin assembly is disposed at least partially within the hollow shaft. The locking pin assembly has a first position wherein the shaft is decoupled from the body and a second position wherein the shaft is coupled to the body. The locking pin assembly is switchable between the first and second positions.

US Patent:

6463897, Oct 15, 2002

Filed:

Jul 16, 2001

Appl. No.:

09/906277

Inventors:

Hermes A. Fernandez - Rochester NY
Ryan D. Fogarty - West Henrietta NY
Jongmin Lee - Pittsford NY
Wayne S. Harris - Hilton NY
Nick J. Hendriksma - SE Grand Rapids MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 134

US Classification:

123 9016, 123 9015, 123 9039

Abstract:

A mechanical assist actuation bracket for use with a roller finger follower. The roller finger follower includes a locking pin assembly having a trigger pin. The mechanical assist actuation bracket includes a face configured for being affixed to the roller finger follower. An arm extends from the face. The arm is configured for translating an actuating arm of an actuating device associated with the roller finger follower in a direction toward and away from the trigger pin during pivotal movement of the roller finger follower.

US Patent:

6502536, Jan 7, 2003

Filed:

Mar 21, 2001

Appl. No.:

09/813425

Inventors:

Jongmin Lee - Pittsford NY
Hermes A. Fernandez - Rochester NY
Wayne S. Harris - Hilton NY
Ryan D. Fogarty - West Henrietta NY

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1300

US Classification:

123 9016, 123 9041, 123 9042, 74559

Abstract:

A two-step roller finger follower includes an elongate body having a first side member and a second side member. A first end and a second end interconnect the first and second side members. The first and second side member define first and second pin orifices, respectively. A center roller is disposed between the first and second side members. The center roller defines a shaft orifice therethrough. A shaft extends through the shaft orifice. A first shaft end is disposed proximate the first side member, and the second shaft end is disposed proximate the second side member. The second shaft end defines a shaft bore therein. The first shaft end defines a pin chamber therein. The shaft bore being is substantially concentric with and intersects the pin chamber. A locking pin assembly is disposed partially within the shaft bore, the pin chamber and at least one of the pin orifices. The locking pin assembly has a first position wherein the shaft is decoupled from the body and a second position wherein the shaft is coupled to the body, and is switchable between the first and second positions.

US Patent:

6604498, Aug 12, 2003

Filed:

Apr 10, 2001

Appl. No.:

09/829738

Inventors:

Hermes A. Fernandez - Rochester NY
Ryan D. Fogarty - West Henrietta NY
Jongmin Lee - Pittsford NY
Wayne S. Harris - Hilton NY
Michael E. McCarroll - West Henrietta NY
Nick J. Hendriksma - SE Grand Rapids MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 134

US Classification:

123 9016, 123198 F, 123 9039

Abstract:

A system for selectively switching the action of a valve in an internal combustion engine includes a roller finger follower having a frame and a disengageable roller. A two-part axial pin for the roller axle is spring-loaded to urge the pin axially of the roller axle to disengage the first part of the pin from the follower frame and simultaneously disengage the second part of the pin from the roller axle. Thus the roller becomes detached from the frame and the follower cannot actuate its designated valve. The roller and pins are retained within the frame by at least one torsion spring. The pins may be controllably reinserted into the sides of the roller and frame to reconnect the roller to the frame by any of various electromechanical and/or hydraulic means. When used in conjunction with a camshaft having high lift and low lift cam lobes, the deactivated follower will then actuate its designated valve according to the profile of the low lift lobes, which may be a no lift profile.

US Patent:

6732691, May 11, 2004

Filed:

Jun 5, 2003

Appl. No.:

10/455677

Inventors:

Jongmin Lee - Pittsford NY
Timothy M. Nieves - Geneseo NY
Jeffrey M. Pfeiffer - Walled Lake MI
Amanpal S. Grewal - Novi MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 134

US Classification:

123 9017, 123 9015

Abstract:

A camshaft phaser control system including a camshaft target wheel, the target wheel having first and second teeth for measuring camshaft oscillatory instability. The trailing edge of the first tooth coincides with the negative camshaft oscillation peak, and the trailing edge of the second tooth coincides with the positive camshaft oscillation peak. During each camshaft rotation, each tooth initiates an input signal to generate first and second input signals in known fashion. During crankshaft rotation, a third input signal is generated corresponding to the rotational position of the crankshaft. From these signals, operational camshaft oscillatory instability is computed by an engine monitoring system (EMS). Any deviation from the operational instability while the engine is operating is a direct measurement of oscillatory instability of the camshaft about its nominal holding position. A change in oscillatory instability is inferred as system malfunction, permitting defensive action to be taken by the EMS.

US Patent:

6755167, Jun 29, 2004

Filed:

Nov 27, 2002

Appl. No.:

10/305994

Inventors:

John J. Krieg - Spencerport NY
Timothy W. Kunz - Rochester NY
Nick J. Hendriksma - Grand Rapids MI
Wayne S. Harris - Hilton NY
James A. Niemeier - Webster NY
Jongmin Lee - Pittsford NY
Hermes Fernandez - Rochester NY
Joseph F. Girtler - Williamson NY

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 118

US Classification:

123 9039, 123 9016, 74569

Abstract:

A two-step roller finger follower including an elongate body having side walls defining coaxially disposed shaft orifices, a pallet end and a socket end interconnecting with the side walls to define a slider arm aperture, and a latch channel. The socket end is mountable to an hydraulic lash adjuster, and the pallet end is matable with a valve stem. A slider arm for engaging a high-lift cam lobe is disposed in the slider arm aperture and has a first end pivotably mounted to the pallet end of the body and the second end forming a slider tip for engaging an activation/deactivation latch. The latch is slidably disposed in the latch channel, and the latch has a nose section for selectively engaging the slider tip. A spool-shaped roller having first and second roller elements fixedly attached to the shaft is rotatably disposed in the shaft orifices, the roller being adapted to follow the surface motion of low-lift cam lobes. Preferably, the shaft is journalled in roller or needle bearings which extend between and through the first and second shaft orifices, being thus exposed to normal copious oil flow through the RFF.

US Patent:

6758184, Jul 6, 2004

Filed:

Jun 5, 2003

Appl. No.:

10/454895

Inventors:

Jongmin Lee - Pittsford NY
John Krieg - Spencerport NY
Thomas H. Fischer - Rochester NY

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01M 100

US Classification:

123196R, 123198 C

Abstract:

A peristaltic piston pump driven by a dedicated pump cam disposed on a camshaft of an engine. A plurality of valve-opening cams are also disposed along the camshaft. The pump cam has a plurality of lobes equal in number to the number of valve cams and each pump lobe is disposed at 180Â from a valve cam lobe such that the camshaft valve torque and secondary oil pump camshaft torque partially cancel, reducing overall camshaft torque oscillation. The pump includes a lost-motion shuttle and spring to permit continuous response of the pump to the cam.

US Patent:

6799543, Oct 5, 2004

Filed:

Jan 5, 2001

Appl. No.:

09/755290

Inventors:

Jongmin Lee - Pittsford NY
Kenneth J. Dauer - Avon NY
Nick J. Hendriksma - Grand Rapids MI

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 134

US Classification:

123 9016, 123 9015, 123 9039, 123198 F

Abstract:

A valve deactivation system includes a deactivation rocker arm assembly and a free motion spring assembly. The deactivation rocker arm assembly includes an elongate rocker arm defining an aperture. A center post is slidingly disposed within the aperture. The center post is configured for engaging a valve stem of a valve of an internal combustion engine. Coupling means selectively couple together and decouple the center post and the rocker arm. The free motion spring assembly includes an inner spring retainer surrounding a portion of the valve stem. An outer spring retainer surrounds a portion of the valve stem. An inner spring surrounds a portion of the valve stem between the inner spring retainer and a disk cap associated with the valve stem. An outer spring surrounds the inner spring.