Hermes A Fernandez

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:

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:

7278384, Oct 9, 2007

Filed:

Sep 30, 2005

Appl. No.:

11/240710

Inventors:

Hermes A. Fernandez - Pittsford NY, US
Andrew J. Lipinski - Henrietta NY, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1/34

US Classification:

123 9016, 123 9015, 123 902, 123 9039, 123 9044, 74568 R, 74569

Abstract:

A two-step roller finger follower having a movable high-lift portion and a low-lift portion. A lock pin mechanism in the low-lift portion includes a lock pin that may be driven hydraulically into latched engagement with the high-lift portion. The lock pin assembly comprises a lock pin and a separable switching pin. A blocking clip mountable on the associated hydraulic lash adjuster includes first and second ends that extend into a switching pin locking groove to block axial motion thereof. A ramp on the follower body mates with a ramp on the blocking clip such that oscillatory motion of the follower engages and disengages the blocking pin from the locking groove. The clip unblocks the switching pin at only those times in the camshaft rotational cycle when complete locking and unlocking is assured, and ending well before the beginning of the next valve lift event.

US Patent:

7305951, Dec 11, 2007

Filed:

May 9, 2005

Appl. No.:

11/125360

Inventors:

Hermes A. Fernandez - Pittsford NY, US
Andrew J. Lipinski - Henrietta NY, US
Nick J. Hendriksma - Grand Rapids MI, US
Thomas H. Fischer - Rochester NY, US
Timothy W. Kunz - Rochester NY, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1/18

US Classification:

123 9039, 123 9043, 123 9044, 123 902, 123 9067, 74559, 74569

Abstract:

A two-step roller finger follower having a high-lift follower portion that rotates relative to a low-lift follower portion about a pivot shaft, including a lost-motion compression spring disposed in a linear bore formed in the high-lift portion to exert force against an curved pad on the back side of the valve pallet of the low-lift portion. The spring is retained and guided in its bore by a spring retainer having a planar bottom for engaging the curved pad. Preferably the retainer is a cup positioned in the spring bore such that the stroke of the cup is limited, to prevent leak-down of the associated hydraulic lash adjuster. Driving the spring by a linear-acting retainer in a linear bore causes the spring to be compressed linearly, resulting in a highly stable and predictable spring rate.

US Patent:

7614375, Nov 10, 2009

Filed:

Sep 25, 2007

Appl. No.:

11/904010

Inventors:

Cynthia A. Tawaf - Rochester NY, US
Andrew J. Lipinski - Wiesbaden, DE
William D. Bauman - Dorr MI, US
Carl R. Kangas - Sand Lake MI, US
Albert C. Stone - Grandville MI, US
Eric G. Wilusz - Rush NY, US
Hermes Fernandez - Pittsford NY, US
Nick J. Hendriksma - Grand Rapids MI, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1/18

US Classification:

123 9039, 123 9016, 123 9044

Abstract:

A two-step roller finger follower having a high-lift follower portion that pivots on a pivot shaft disposed on a low-lift follower portion, and having a lost-motion spring disposed between the high-lift follower and the low-lift follower to bias the high-lift follower toward the high lift cam lobe. Various bearing cups and roller shaft sleeve embodiments are shown, all of which allow for improved shaft and needle bearing arrangements. A z-stop formed by the bearing cups and/or the shaft sleeve limits the range of travel of the high-lift follower with respect to the low-lift follower. Various z-stop embodiments are provided including a non-contacting roller shaft sleeve that grounds the high-lift follower to the low-lift follower independent of the roller shaft.

US Patent:

7798113, Sep 21, 2010

Filed:

Jun 20, 2007

Appl. No.:

11/820789

Inventors:

Thomas H. Fischer - Rochester NY, US
Andrew J. Lipinski - Rochester NY, US
Hermes A. Fernandez - Pittsford NY, US
Timothy W. Kunz - Rochester NY, US
Richard B. Roe - Henrietta NY, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F01L 1/18

US Classification:

123 9044, 123 9039, 74569

Abstract:

A two-step roller finger follower assembly for use in conjunction with a camshaft of an internal combustion engine, wherein the camshaft has at least one first lobe and at least one second lobe. The roller finger follower assembly comprises a follower body for engaging the first cam lobe and having a central aperture, a follower pivotably disposed on the follower body in the central aperture for engaging the second cam lobe, and a limiting stop disposed on the follower body for engaging a feature on the follower to limit travel of the follower body with respect to the follower. The limiting stop prevents overtravel of the follower body during valve-deactivation mode of the assembly, thus preventing excessive leak down of an associated hydraulic lash adjuster.