Kynan L Church

US Patent:

6354265, Mar 12, 2002

Filed:

Oct 20, 2000

Appl. No.:

09/693666

Inventors:

Keith Hampton - Ann Arbor MI
Kynan L. Church - Ceresco MI
William C. Dumphy - Williamsburg VA
Richard L. Madden - Marshall MI
David M. Preston - Clarkston MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F02D 1304

US Classification:

123321, 123322

Abstract:

A compression release engine brake assembly adapted for use with an internal combustion engine, and an exhaust valve ( ) operable to open in a normal exhaust lift event (FIG. ) and in a brake lift event (FIG. ). The engine includes an exhaust valve actuating mechanism ( ) for imparting reciprocal movement to said exhaust valve ( ) in response to rotation of a cam shaft ( ) including a cam profile ( ), a normal lift portion ( ) and a brake lift portion ( ). The assembly includes a lost motion device ( ) moveable between a normal lost motion condition (FIG. ) and an actuated condition (FIG. ) in response to movement of an input member ( ). An energy storage spring ( ) is operable, after being compressed to an energy storage condition (FIG. ) to be able to bias the input member ( ) toward a second position, effecting the actuated condition of the lost motion device ( ). A latching mechanism ( ) is operable to first displace the energy storage spring ( ) to a compressed condition, and then release it just before the cam follower ( ) traverses the brake lift portion ( ), in response to the pivotal movement of the rocker arm assembly ( ) which comprises part of the exhaust valve actuating mechanism.

US Patent:

6405699, Jun 18, 2002

Filed:

Aug 9, 2001

Appl. No.:

09/925363

Inventors:

Kynan L. Church - Ceresco MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 114

US Classification:

123 905, 123 9016

Abstract:

A valve actuation sub-assembly for an internal combustion engine, the sub-assembly being adapted for attachment to an engine block ( B) and including a conventional roller follower ( ) and a deactivating roller follower ( ). The sub-assembly comprises a follower guide member ( ) defining a first guide receptacle ( ) for receiving an upper portion ( ) of the conventional roller follower ( ), and a second guide receptacle ( ) for receiving an upper portion ( ) of the deactivating roller follower ( ). In accordance with the invention, neither upper portion ( ) will be received within the guide receptacle ( ) intended for the other upper portion, thus preventing assembly errors, wherein one roller follower type is installed in a location on the engine intended for the other roller follower type.

US Patent:

6688266, Feb 10, 2004

Filed:

Mar 17, 2003

Appl. No.:

10/390482

Inventors:

Kynan L. Church - Ceresco MI
John A. Ness - Birmingham MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 134

US Classification:

123 9016, 123 9044, 123 9052, 123 9055

Abstract:

A valve deactivation assembly ( ) comprises part of the valve gear train for an internal combustion engine, and is disposed in a bore ( ) defined by the A engine block ( B). The assembly ( ) includes a latching mechanism ( ) shiftable, in response to control fluid pressure, between latched and unlatched conditions. The assembly ( ) includes an outer body member ( ), having an outer cylindrical surface ( S), reciprocable within said the bore ( ), the outer body member including a lower terminal portion ( L). The outer body member defines an annular sealing groove ( ) which remains aligned within the bore ( ), between the lower terminal portion ( L) and a passage ( ) communicating control fluid pressure the latching mechanism ( ), as the outer body member reciprocates. There is also a fluid passage ( ) disposed to communicate a source ( ) of low pressure to the annular groove ( ), to thereby form a barrier to block the migration of air to the control pressure passage ( ).

US Patent:

7484487, Feb 3, 2009

Filed:

Nov 21, 2005

Appl. No.:

11/284269

Inventors:

Austin R. Zurface - Hastings MI, US
Andrew P. Harman - Battle Creek MI, US
Kynan L. Church - Battle Creek MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 1/18

US Classification:

123 9039, 123 902, 123 9044, 74559

Abstract:

A valve control system including a camshaft having first and second cam profiles, the valve control system comprising a rocker arm assembly () including a first rocker arm () having a first cam follower () in engagement with the first cam profile, and a second rocker arm () having a second cam follower () in engagement with the second cam profile. The engine includes a fulcrum location (P) operable to provide a source of pressurized fluid, and the first rocker arm includes a latch member () moveable between latched (FIG. ) and unlatched conditions. The latch member is biased toward the latched condition by a fluid pressure in a chamber (), and the first rocker arm defines a fluid passage () having a first end () in open fluid communication with the pressure source, and a second end () in open fluid communication with the pressure chamber ().

US Patent:

7484488, Feb 3, 2009

Filed:

Nov 22, 2006

Appl. No.:

11/603737

Inventors:

Majo Cecur - Turin, IT
Kynan L. Church - Battle Creek MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 1/14

US Classification:

123 9048, 123 9052, 74569

Abstract:

A tappet assembly includes a first follower engaging a cam lobe profile, and a second follower engaging an engine poppet valve. A latch member is operable to fix the first follower in an extended position, to provide a high lift condition. The first and second followers define first and second stop surfaces, respectively, such that when the latch member is retracted, the lift portion engages the first follower and moves it toward the poppet valve until the stop surfaces engage, and thereafter, further downward movement of the first follower moves the second follower to provide a low lift. One benefit of this feature is to prevent accumulation of unburned fuel in a port fuel injection type of gasoline engine.

US Patent:

7798112, Sep 21, 2010

Filed:

Jun 29, 2007

Appl. No.:

11/771088

Inventors:

Austin R. Zurface - Hastings MI, US
Andrew P. Harman - Battle Creek MI, US
Kynan L. Church - Battle Creek MI, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 1/18

US Classification:

123 9039, 123 9044, 74559

Abstract:

A rocker arm assembly includes first and second rocker arms defining a pivot location. The first rocker arm includes, toward a first axial end thereof adjacent the pivot location, a fulcrum surface and, toward a second axial end thereof, a latch assembly including a latch member moveable between latched and unlatched conditions relative to a latch surface defined by an adjacent portion of the second rocker arm. The latch assembly further including a spring biasing the latch member toward one of the latched and unlatched conditions, and a pressure chamber operable to bias the latch member toward the other of the latched and unlatched conditions. The first rocker arm further includes a fluid passage having a first end in open fluid communication with the fulcrum surface and a second end in open fluid communication with the pressure chamber of the latch assembly.

US Patent:

8215275, Jul 10, 2012

Filed:

Aug 13, 2010

Appl. No.:

12/856266

Inventors:

Kynan L. Church - Corbett OR, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 1/18

US Classification:

123 9039, 123 9016, 123 9044, 74559, 74569

Abstract:

A deactivating rocker arm for use with a cam having at least one no-lift safety lobe is provided. Safety lobe contacting surfaces on the rocker arm are configured for contact with safety lobes during abnormal operation of the rocker arm. When the rocker arm is deactivated, the safety lobe contacting surfaces may come into contact with safety lobes when excessive pump-up of a lash adjuster brings the rocker arm undesirably close to the rotating cam. This contact limits the range of motion of the rocker arm during certain instances of abnormal operation, promoting more effective transition between deactivated and activated states and preventing damaging contact between the rocker arm and the cam lobe.

US Patent:

8635980, Jan 28, 2014

Filed:

Jun 25, 2012

Appl. No.:

13/532777

Inventors:

Kynan L Church - Corbett OR, US

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 1/18

US Classification:

123 9039, 123 9044, 74559, 74569

Abstract:

A deactivating rocker arm for use with a cam having at least one no-lift safety lobe is provided. Safety lobe contacting surfaces on the rocker arm are configured for contact with safety lobes during abnormal operation of the rocker arm. When the rocker arm is deactivated, the safety lobe contacting surfaces may come into contact with safety lobes when excessive pump-up of a lash adjuster brings the rocker arm undesirably close to the rotating cam. This contact limits the range of motion of the rocker arm during certain instances of abnormal operation, promoting more effective transition between deactivated and activated states and preventing damaging contact between the rocker arm and the cam lobe.