Eaton Intelligent Power Limited

Eaton Corporation

Other

Andrei Dan Radulescu

Austin Robert Zurface

James Roy Sheren

Majo Cecur

Mark Van Wingerden

Ramy Rezkalla

Matthew Vance

Philip Michael Kline

James Edward McCarthy, Jr

Anthony Leon Spoor

Tony Eric Gordon

Daniel Bennett Trudell

Dale Arden Stretch

Nicola Andrisani

David Gerard Genise

Michael J Campbell

Otto Schultheis

Petr Liskar

Luigi Lia

Mark Allan Juds

Peter J Theisen

Douglas John Nielsen

Emanuele Raimondi

Brian Karl Vandeusen

Mark VanWingerden

Eric Yankovic

Massimo D'Amore

Alessio Lorenzon

Amogh Vilas Kank

Leighton Roberts

Michele Angelo Cecchi

Nicholas Peter Gillette

Mark William Hildebrandt

Marco Ravoni

Andrew Lee

Ryan Krieger

Douglas Wright

Egidio Canzoniere

Jeffrey R Brown

Mark Joseph Birler

Maria Letizia Ciardullo

Brian Karl VanDeusen

Brandon J Elliott

Debra Lynn McFadden

Daniel Nelson

Nilesh L Bagal

Mike J Otto

Kyle Crayne

Mustafa Huseyin

Otto Jerome Schultheis

Robert Boychuk

Venkateswaran Krishnasamy

Brian K Vandeusen

A rocker arm assembly including a cam side rocker arm portion configured to selectively rotate about a pivot location. A latch pin assembly is provided for selectively latching and deactivating rotation of the cam side rocker arm portion relative to the valve side rocker arm portion about the pivot location. The latch pin assembly includes a latch pin moveable within a cam side bore and a valve side bore. The latch pin includes an outer peripheral surface having a first portion and a second portion. The first portion has a first diameter that is less than a second diameter of the second portion. At least one of the outer peripheral surface of the latch pin or inner surfaces of the cam side bore and the valve side bore is frustoconical-shaped.

Rocker arm assembly with improved latch pin assembly

A switching roller finger follower (SRFF) assembly for valve actuation comprises an outer arm, an inner arm, an inner roller, a bearing axle and a pair of outer rollers. The outer arm is pivotally coupled to a pivot axle. The inner arm is at least partially disposed within the outer arm and pivotally coupled to the pivot axle. The inner roller assembly comprise a bushing and an outer ring. The bushing defines a curved slot therein. The bushing is fixed to the inner arm. The outer ring is configured to rotate around the bushing. The bearing axle extends through the curved slot. The pair of outer rollers are disposed on each end of the bearing axle.

Switching roller finger follower with inner arm having asymmetric inner roller

A rocker shaft assembly configured to support a rocker arm and deliver oil to the rocker arm and related method of making is provided. The rocker shaft assembly includes a core shaft and a sleeve. The core shaft has a core body including a main oil supply channel formed thereon. The sleeve has passages formed thereon. The sleeve is disposed around the core shaft. The main oil supply channel aligns with at least one of the passages on the sleeve. The main oil supply is milled into the core shaft.

Sleeved rocker shaft for type III heavy duty valve train

A rocker arm including a cam side arm and a valve side arm is disclosed. The cam side arm can include a bearing surface, a cam-side pivot extension, and a plunger set seat. The valve side arm can include a rocker shaft bore configured to receive a rocker shaft, a valve-side pivot extension pivotally connected to the cam-side pivot extension, a capsule comprising a plunger set, and a capsule mount configured to receive the capsule. The capsule mount can include a lost motion spring.

Deactivating rocker arm and capsules

A switching roller finger follower (SRFF) for valve actuation includes an outer arm (), a first inner arm (), a bearing axle () and a latch pin (). The outer arm () is formed of a metal stamping, and is pivotally coupled to a main axle (). The first inner arm () is coupled to the main axle () and is pivotably secure to the outer arm. The bearing axle () extends through the outer arm and the first inner arm. The bearing axle supports a roller () thereon. The latch pin () is slidably disposed in the outer arm () and is movable between at least a first position where the outer arm () and the first inner arm () are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.

Metal stamped switching roller finger follower

Systems, methods, and control systems for a switching rocker arm assembly are disclosed. A switching rocker arm () engages a valve (), the switching rocker arm () is movable by contact with a cam () having a lift portion () and a base circle (). The switching rocker arm () comprises an inner arm (), an outer arm () pivotably secured to the inner arm () and having a latch bore, and a latch pin () selectively movable between a first position where the latch pin () does not contact the inner arm (), and a second position wherein the latch pin () contacts the inner arm (). A solenoid assembly () is energized while the rocker arm is in contact with the lift portion () of the cam. The solenoid assembly is direct-acting and overhead and is calibratable with respect to the rocker arm.

Direct-acting solenoid having variable triggering timing for electro-mechanical valvetrain and actuation levers for switching rocker arms

A castellation assembly comprises a lost motion spring assembly, an upper castellation piece, and a lower castellation piece. A spring hat comprises a crown, a pin hole through the crown, and a brim. A lost motion spring is seated against the spring hat. Upper castellation piece comprises a tubular body, an upper inner rim adjoining the brim, and upper castellation teeth. Lower castellation piece comprises a spring post extending up from a castellation body, the spring post passing through the lost motion spring, and through the pin hole. Lower castellation teeth extend from the castellation body. The lost motion spring is biased against the castellation body to lift the upper inner rim by the brim. A lash screw can house the spring post so that the spring post terminates inside the lash screw. A rocker arm is an example of a castellation assembly installation.

Castellation assembly, lash capsule, and rocker arm

A hydraulic capsule can comprise a hollow capsule body for setting the location of a plunger, a latch set alignable with a latch groove, and a latch-setting insert. The plunger can be configured to push the latch set towards the latch-setting insert. A lost motion spring can be incorporated into the hydraulic capsule, or the lost motion spring can be installed in capsule bore where the hydraulic capsule is mounted. Either a hydraulic capsule or an electromagnetic capsule or a drop in assembly can be installed in a capsule mount in a rocker arm to form a type III cam-actuated rocker arm. The rocker arm can comprise a cam side arm and a valve side arm. The rocker arm can be configured to balance a moment of inertia of the deactivation components. Twisting forces on the cam can be counteracted.

An engine brake rocker arm assembly for a valvetrain and operable in an engine drive mode and an engine braking mode. The assembly is configured to selectively open one of first and second exhaust valves in the engine braking mode and includes a brake rocker arm configured to rotate about a rocker shaft, and an engine brake capsule assembly movable between (i) a locked position configured to perform an engine braking operation, and (ii) an unlocked position that does not perform the engine braking operation. A lash setting tool is configured to removably engage the engine brake capsule assembly and move the engine brake capsule to the locked position to enable mechanical lash adjustment while the brake rocker arm is assembled in a valvetrain and the engine brake capsule is assembled in the brake rocker arm.

Lash setting features for castellation mechanism

A valve train arrangement constructed in accordance to one example of the present teachings includes a rocker arm, a deactivating hydraulic lash adjuster (HLA) capsule, a lost motion spring (LMS) capsule and a lever. The rocker arm has a first end and a second end. The second end cooperates with a valve. The HLA capsule cooperates with the first end of the rocker arm. The LMS capsule has a lost motion spring. The LMS capsule is located in a position on the valve train arrangement that is offset from the HLA capsule. The lever is configured between the HLA capsule and the LMS capsule. During cylinder deactivation, load is transferred from the HLA capsule to the lever arm and ultimately to the lost motion spring in the LMS capsule.

Rocker arm assembly with lost motion spring capsule

A rocker arm includes an outer arm having a first side and a second side, an inner arm positioned between the first side and the second side of the outer arm, a pivot axle pivotally coupling the inner arm to the outer arm at a first end of the inner arm and a first end of the outer arm, and a latch pin having a first position and a second position. The latch pin in the first position pivotally fixes the inner arm to the outer arm at a second end of each of the inner arm and a second end of the outer arm, and in the second position allows the inner arm and the outer arm to pivot independently. Two lost motion springs are respectively secured to mounts provided on the outer arm.

Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves is provided. The valve train assembly includes an intake rocker arm assembly and an exhaust rocker arm assembly. The valve train assembly is configurable for operation in any combination of activated and deactivated states of engine braking and cylinder deactivation. The exhaust rocker arm assembly includes a first exhaust rocker arm, a second exhaust rocker arm and an engine brake exhaust rocker arm. A first exhaust HLA is associated with the first exhaust rocker arm. A second exhaust HLA is associated with the second exhaust valve. An exhaust actuation assembly selectively actuates to alter travel of the first and second exhaust HLA's to change a state of cylinder deactivation between activated and deactivated.

Valve train assembly

An overhead cam engine system comprises a rotating overhead exhaust cam rail comprising a plurality of exhaust lobes. A first switching roller finger follower actuates a first exhaust valve, and is configured to switch between a first lift profile and a second lift profile. A second switching roller finger follower is coupled to actuate a second exhaust valve, and is configured to switch between a third lift profile and a fourth lift profile. The third and fourth lift profile are different than the first and second lift profile. An actuation assembly is connected to switch the first switching roller finger follower and the second switching roller finger follower to select between at least three exhaust lift modes to open and close the first exhaust valve and the second exhaust valve using combinations of the first, second, third and fourth lift profiles.

Multi-mode valve lift

A type III rocker arm assembly operable in a first mode and a second mode based on rotation of a cam shaft includes a rocker shaft and a first rocker arm assembly. The first rocker arm assembly receives the rocker shaft and is configured to rotate around the rocker shaft in the first mode based on engagement with the first cam lobe. The first rocker arm assembly collectively comprises a valve side rocker arm, a cam side rocker arm and a latch pin. The valve side rocker arm defines a valve side rocker arm bore. The cam side rocker arm defines a cam side rocker arm bore. The latch pin assembly is received by the valve and cam side rocker arm bores and selectively couples the valve side rocker arm and the cam side rocker arm for concurrent movement in the first mode.

Rocker arm assembly having lash management for cylinder deactivation and engine brake configuration

A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves is provided. The valve train assembly includes an intake rocker arm assembly and an exhaust rocker arm assembly. The valve train assembly is configurable for operation in any combination of activated and deactivated states of engine braking and cylinder deactivation. The exhaust rocker arm assembly includes a first exhaust rocker arm, a second exhaust rocker arm and an engine brake exhaust rocker arm. A first exhaust HLA is associated with the first exhaust rocker arm. A second exhaust HLA is associated with the second exhaust valve. An exhaust actuation assembly selectively actuates to alter travel of the first and second exhaust HLAs to change a state of cylinder deactivation between activated and deactivated.

Growing community of inventors

Marshall, MI, United States of America

Andrei Dan Radulescu