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| Number | Title | Issue Date |
| 7415954 | Rocker shaft arrangement for an engine A rocker shaft arrangement for a valvetrain system of an engine is provided. The rocker shaft arrangement includes a split rocker shaft having two fluidly separate internal regions. Each of the fluidly separate internal regions is arranged to selectively carry an in... | 08/26/2008 |
| 7406936 | Accumulator fuel system An accumulator fuel system for an internal combustion engine having a plurality of engine cylinders, includes an accumulator fuel volume (12; 112) for supplying high pressure fuel to one or more of a plurality of injectors (10) of the fuel system, each... | 08/05/2008 |
| 7398752 | Rocker arm for valve actuation The present invention provides an improved rocker arm system for actuating poppet valves in high performance internal combustion engines. The rocker arm provides trunnion journals extending from each side fitted to outboard bearing mounts to guide the motion of the ... | 07/15/2008 |
| 7347172 | Hydraulic valve actuation system with valve lash adjustment A hydraulic valve actuation system has a hydraulic actuator connected with a valve in an engine. The hydraulic actuator has a boost pin enclosing a drive pin in a casing. The drive pin connects with and defines a valve lash with a valve stem of the valve. The hydrau... | 03/25/2008 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7156575 | Shaft-hub connection The present invention relates to a shaft-hub connection having an attachment flange and a clamping element, particularly a clamping ring, attachable thereto, by means of which the shaft end assigned to the attachment flange may be friction-locked to the attachment f... | 01/02/2007 |
| 7146953 | Mechanical valve play compensation element for a valve drive on a piston combustion engine The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in su... | 12/12/2006 |
| 7077090 | Valve train with hydraulic lash adjustment Valve train with hydraulic lash adjustment in the entire timing train, in which oil is delivered from the oil supply space of the hydraulic valve-lash adjuster (HLA) to the valve rocker arm via a hollow push rod, a choke limiting the oil discharge, the choke being d... | 07/18/2006 |
| 7055476 | Valve actuation apparatus for internal combustion engine A VA apparatus for an internal combustion engine includes a pair of VO cams disposed on both sides of a crank cam and having inside end faces opposed to each other, wherein the inside end faces have therebetween an annular portion of the crank arm supported in a san... | 06/06/2006 |
| 7047925 | Dual feed hydraulic lash adjuster An improved dual feed hydraulic lash adjuster (HLA), for use in an internal combustion engine, comprising a hollow body and a plunger assembly disposed in a bore of the engine. A one-piece plunger body includes a first chamber for forming a low-pressure oil reservoi... | 05/23/2006 |
| 7049846 | Clock tree network in a field programmable gate array A clock tree distribution network for a field programmable gate array comprises an interface with a root signal chosen from at least one of an external clock signal, an internal clock signal, a plurality of phase lock loop cell output signals and programmable elemen... | 05/23/2006 |
| 6968819 | Variable valve actuating device To allow both the valve lift and valve timing for an engine valve to be varied in a continuous manner, the variable valve actuating device (1) comprises a camshaft (8) rotatably supported by a fixed part of the engine and provided with a cam (7)... | 11/29/2005 |
| 6964252 | Valve lifter for internal combustion engine A valve lifter is disclosed comprising a lifter housing having a receiver, a switch retainer having at least one bore, and a key disposed in the at least one bore. The key is movable into the receiver to lock the switch retainer against movement relative to the lift... | 11/15/2005 |
| 6962134 | Rocker arm shaft retainer and assembly A rocker arm shaft retainer includes an elongated contoured sheet-like body having two opposite ends, two opposite sides longer in length than the ends, and a central portion between the sides. A plurality of fingers extend from the central portion towards the sides... | 11/08/2005 |
| 6941915 | Hydraulic lash adjuster and improved method of assembly thereof A hydraulic lash adjuster (11) for an internal combustion engine, and an improved method of assembly of such a lash adjuster. The lash adjuster (11) is of the type having a body (13), a plunger (15), and a check valve assembly (17)... | 09/13/2005 |
| 6883484 | Rocker shaft A plurality of oil passages are formed in a shaft body of a rocker shaft, which partially constitutes a valve drive system of an internal combustion engine. A bolt hole is formed in the shaft body in such a manner as to substantially perpendicularly intersect the ax... | 04/26/2005 |
| 6874456 | Valve operating apparatus of internal combustion engines In a valve operating apparatus, torque is transmitted from an eccentric drive cam attached to a drive shaft through a multinodular-link motion-transmission mechanism including a link arm, a rocker arm, and a link rod to a rockable cam to cause an engine valve to ope... | 04/05/2005 |
| 6810846 | Flow path structure of hollow tube To provide a flow path structure of a hollow tube capable of reducing facility cost and product cost by promoting assembling operability, a rocker shaft is constituted by including a tubular member having a hollow portion and a partitioning member interposed at the ... | 11/02/2004 |
| 6782855 | Valve train and method for reducing oil flow to deactivated engine valves An engine valve train has oil flow to valve actuating components cut off or restricted when the valves are closed, to reduce parasitic losses. In an exemplary embodiment, a pushrod has a pivotable connection with a valve actuating rocker arm through which internal o... | 08/31/2004 |
| 6718940 | Hydraulic lash adjuster with compression release brake The present invention is directed to an improved assembly for operating at least one exhaust valve and at least one intake valve in a cylinder in an engine. The assembly includes a rocker shaft, an intake rocker arm pivotally mounted on the rocker shaft for operatin... | 04/13/2004 |
| 6679210 | Rocker arm for internal combustion engine The present invention prevents abnormal wear of the friction surfaces surrounding the rocker arm, prevents poor lubrication when the engine is started at low temperature after a long period of shutdown, and improves reliability. A bag-shaped oil sump (24)... | 01/20/2004 |
| 6644254 | Valve train for internal combustion engine A valve train for an internal combustion engine includes a rocker shaft (9) provided with an oil passage, first and second rocker arms (7, 8) having support parts (7a, 8a) provided with bores (7b, 8b) to receive the rocker shaft (9) therein so as to be su... | 11/11/2003 |
| 6612276 | Rocker arm for valve trains of internal combustion engines The rocker arm (2), obtained from a shaped element (30) made of metallic material, comprises surfaces (15,18) for engagement with a tappet (3) and with a stem (20) of a valve, respectively, and a portion (7) for mounting of a rotatable roller (8) able to ... | 09/02/2003 |
| 6470843 | Rocker arm adjustment screw assembly An adjustment screw assembly (10) having an adjustment screw (11) engaged to a rocker arm (14) of a combustion engine (12) is disclosed. The adjustment screw (11) comprises a lower member (26) and a vertical member (28) wherein the vertical member (28) th... | 10/29/2002 |
| 6463899 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, a swinging support section provided at a base end of a rocker arm is swingably carried on a rocker shaft mounted in a cylinder head. A plurality of valve abutments are provided at a tip end of ... | 10/15/2002 |
| 6431135 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, a swinging support section provided at a base end of a rocker arm is swingably carried on a rocker shaft, and tappet screws are threadedly fitted in a plurality of boss portions formed at a tip... | 08/13/2002 |
| 6334416 | Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof A sheet metal rocker arm manufactured by the steps of punching one metal plate to form a blank having a predetermined contour and through holes, and subjecting this blank to a bending work based on a press work to form a pair of side walls parallel to eac... | 01/01/2002 |
| 6325034 | Hydraulic lash adjuster A hydraulic lash adjuster (11) disposed within a bore (14) defined by an internal combustion engine (16), the hydraulic lash adjuster (11) comprising a ball plunger (12) including a body portion (13), whereby the body portion (13) is reciprocable in the b... | 12/04/2001 |
| 6230676 | Interchangeable rocker arm assembly A rocker arm assembly for an internal combustion engine includes a central mounting shaft and a rocker arm rotatably mounted to the central shaft wherein the rocker arm has a generally planar main body with a valve contacting end and a push rod contacting... | 05/15/2001 |
| 6192845 | Hydraulic lash adjuster A hydraulic lash adjuster (1) having a plunger assembly (3) including an upper plunger (4) and a lower plunger (5), the plungers being disposed within a body (2) defining a bore (2b,7), and in conventional leakdown plungers, cooperating with the bore to d... | 02/27/2001 |
| 6155222 | Overhead valve engine An overhead valve engine has rocker arm pivoted portions (13),(13) oriented substantially in a right and left direction and arranged side by side in a front and rear direction. Each of rocker arm output portions (15),(15) projects from one end portion of ... | 12/05/2000 |
| 6138624 | Tappet socket assembly for rocker lever assembly and method of assembling the same A tappet socket assembly for a rocker lever assembly or other lever assembly includes a retainer, a tappet socket, and a ball bearing. The rocker lever is adapted to be rocked about a pivot axis and includes a cylindrical opening or bore which partially r... | 10/31/2000 |
| 6125805 | Valve operating system in internal combustion engine A valve operating system in an internal combustion engine includes a cam shaft provided with a plurality of valve operating cams, a plurality of rocker arms positioned adjacent one another, an associative operation switch capable of being switched between... | 10/03/2000 |
| 6085707 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, the operational characteristic of an engine valve which is an intake valve or an exhaust valve can be changed in accordance with the operational state of the engine, the reduction in size there... | 07/11/2000 |
| 6070561 | Valve actuator with lubrication passage and method of forming A valve actuator for an engine includes a pivot socket having a dome with an improved lubrication passage. The actuator may be a finger follower with a body having spaced side walls connected adjacent opposite ends by first and second transverse webs. A c... | 06/06/2000 |
| 6039017 | Hydraulic lash adjuster with lash A hydraulic lash adjuster having a piston capable of forming a pivot for a member of an engine valve train connecting a cam and a valve includes a hydraulic lash adjusting element of varying length for acting in the valve train, an expansion spring for ex... | 03/21/2000 |
| 6006710 | Hydraulic lash adjuster mechanism with pressure controlled leak down A hydraulic lash adjuster mechanism for an internal combustion engine, the adjuster having a body having a bore formed therein with a piston slidingly received within the bore. The lash adjuster is in communication with one end of a cam follower that is i... | 12/28/1999 |
| 5979379 | Valve operating system in internal combustion engine A valve operating system in an internal combustion engine includes a cam shaft provided with a plurality of valve operating cams, a plurality of rocker arms positioned adjacent one another, an associative operation switch capable of being switched between... | 11/09/1999 |
| 5979383 | Rocker arm assembly lubrication A rocker arm assembly includes a U-shaped rocker arm defined by a bottom wall and, two side walls depending upwardly therefrom where the side walls each have a central axle opening to support a transversely extending roller axle. A roller for rolling agai... | 11/09/1999 |
| 5975036 | Variable valve actuation apparatus A variable valve actuation apparatus for engine cylinder valves comprises a main rocker arm having an end portion for driving association with a cylinder valve. The main rocker arm supports a sub-rocker arm. A lost motion mechanism is between the main roc... | 11/02/1999 |
