Class / Patent application number | Description | Number of patent applications / Date published |
123900600 | Cam | 60 |
20080276888 | Cams for Built-Up Camshafts - The invention relates to cams for constructed camshafts, said cams formed from at least one profiled sheet metal strip ( | 11-13-2008 |
20080283003 | Two-step roller finger cam follower - A two-step roller finger follower assembly for shifting between high-lift and low-lift valve modes in a valve train of an internal combustion engine includes a body having side members defining coaxially disposed shaft orifices, a pallet end, a socket end, a slider arm aperture, and a latch pin channel. The socket end is mountable to a 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 aperture, is pivotably mounted to a rotatable cross-shaft extending through the shaft orifices, and includes a slider tip for selectively engaging a latch pin to latch or unlatch the slider arm from the body. Dual rollers on the cross-shaft follow dual low-lift cam lobes. Preferably, the slider arm has a compound radial surface to provide compound lost motion of the slider arm, thereby minimizing rotational inertia. | 11-20-2008 |
20080289592 | CAM SHAFT - The instant invention relates to a cam shaft ( | 11-27-2008 |
20090050083 | Engine with round lobe - An engine with intake and exhaust valves that may be controlled with a circular cam lobe is provided. The rotating axis of the circular cam lobe is offset from the physical center of the cam lobe. This permits the cam lobe to impart a reciprocal opening and closing of the valve. To maintain the valve in the closed position, the interconnection between the cam lobe and the valve | 02-26-2009 |
20090145379 | VALVE SYSTEM - A valve system includes a first valve provided on an intake or exhaust port; a second valve provided on another intake or exhaust port; a first cam unit on a camshaft, defining first and second lobe heights; and a second cam unit on the camshaft, defining a third lobe height. The first cam unit moves the first valve by a distance of either the first or the second lobe height, and the second cam unit moves the second valve by a distance of the third lobe height. | 06-11-2009 |
20090165737 | BEARING DEVICE - The present invention relates to a bearing device ( | 07-02-2009 |
20090199795 | Camshaft and method for manufacturing a camshaft - A camshaft and a method for manufacturing the camshaft as described. A gear wheel of the camshaft is mounted on a camshaft tube. A collar that is attached to the gear wheel and a locating bearing element that is mounted on the camshaft tube delimit a locating bearing seat of the camshaft. | 08-13-2009 |
20090241871 | ASSEMBLED CAMSHAFT AND INTERNAL COMBUSTION ENGINE PROVIDED WITH ASSEMBLED CAMSHAFT - The degree of freedom in a mounting position of a fuel pump driving cam ( | 10-01-2009 |
20090255492 | CONCENTRIC CAMSHAFT WITH VARYING WALL GEOMETRY AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft. | 10-15-2009 |
20090308338 | VALVE TRAIN FOR INTERNAL COMBUSTION ENGINE - A valve train of an internal combustion engine is provided with a plurality of camshaft supports arranged on a support member of the engine, and a camshaft is supported on the camshaft supports. The camshaft has valve operating cams thereon for opening and closing engine valves of engine. A torque reducing mechanism is provided to apply a counter torque to the camshaft to suppress torque fluctuation of the camshaft caused by reaction forces applied to the cams by the engine valves. The torque reducing mechanism has a rotating member that rotates together with the camshaft, and a counterforce applying member for applying a counterforce to the rotating member to apply a counter torque to the camshaft. The counterforce applying member is supported on a connecting member connecting adjacent ones of the camshaft supports. The torque reducing mechanism suppresses torque fluctuation of the camshaft, suppresses increase in the weight of the camshaft, and suppresses increase in the size of the engine, ensuring a necessary supporting rigidity for supporting a counterforce applying mechanism included in the torque reducing mechanism. | 12-17-2009 |
20100000477 | CAMSHAFT - The present invention relates to a camshaft ( | 01-07-2010 |
20100012060 | Split Lobe Design of Concentric Camshaft - An engine assembly may include an engine structure and a camshaft supported on the engine structure. The camshaft may include a first shaft, a first lobe member fixed for rotation with the first shaft, a second lobe member fixed for rotation with the first shaft and spaced axially from the first lobe member, and a third lobe member located on the first shaft axially between the first and second lobe members. The third lobe member may include first and second portions coupled to one another to provide for assembly of the third lobe member on the first shaft after the first and second lobe members are fixed to the first shaft. | 01-21-2010 |
20100024750 | Apparatus to improve the efficiency of internal combustion engines, and method thereof - Method and apparatus for controlling the volume of air or air and non-combusted fuel mixture inside a combustion chamber and cylinder of an internal combustion engine. The apparatus includes an inlet-outlet portal having open and closed states and connected to air or air and non-combusted fuel source(s), and a combustion chamber with reduced volume. The inlet-outlet portal is controlled, when open, to permit air or air and non-combusted fuel mixture to enter or enter and exit the combustion chamber and cylinder and when closed to prevent air or air and non-combusted fuel mixture from entering or exiting the chamber and cylinder, in which the volume of air or air and non-combusted fuel mixture located inside the chamber and cylinder when the inlet-outlet portal closes, is less than the volume of the combustion chamber and cylinder defined when the piston is at the bottom dead centre position inside the cylinder when the inlet-outlet portal is closed. | 02-04-2010 |
20100059002 | VALVE OPERATING CAMSHAFT SYSTEM FOR INTERNAL COMBUSTION ENGINE - A camshaft system includes a number of cam lobes locked upon a cylindrical shaft. Bearings configured with one-piece bores and are engaged with the cylindrical shaft. The bearings are captured upon the shaft by the locked-on cam lobes. | 03-11-2010 |
20100132640 | CAMSHAFT ASSEMBLY - A camshaft assembly is disclosed which comprises an inner shaft, an outer tube surrounding and rotatable relative to the inner shaft, and two groups of cam lobes mounted on the outer tube, the first group of cam lobes being fast in rotation with the outer tube, the second group being rotatably mounted on the outer surface of the tube and connected for rotation with the inner shaft. The connection between the second group of cam lobes and the inner shaft is effected by means of driving members whose positions are adjustable in order to compensate for significant manufacturing inaccuracies between the inner shaft and its associated group of cam lobes. | 06-03-2010 |
20100139586 | CORE FOR THIN-WALL HOLLOW CASTING AND THIN-WALL HOLLOW CASTING PRODUCED BY PRODUCTION METHOD EMPLOYING IT - It is a technical common knowledge that a chaplet used in casting of a hollow casting is fusion-bonded with the melt and is incorporated into the casting. However, the adhesion between the chaplet and the casting body is not necessarily satisfactory, thereby incurring the strength reduction of a thin-wall hollow casting. A core for a thin-wall hollow casting according to the present invention is provided with a chaplet mounted thereon. The chaplet has arcuate portion | 06-10-2010 |
20100162977 | Rotationally Balanced Camshaft Assembly - A method for intentionally imbalancing one or more mass elements of a camshaft assembly to provide overall rotational balance to the assembly, also referred to herein as “zero balance”. Such intentional imbalance may be imparted to any element of a camshaft assembly. In a currently-preferred embodiment, one or more components of an improved camshaft phaser assembly are manufactured as rotationally unbalanced, either by intentionally forming an unbalanced component such as a sprocket wheel having added material or by removing non-functional material from an otherwise standard component. Because the camshaft phaser assembly has a unique and fixed angular relationship to the camshaft, zero balance can be readily and repeatedly achieved for all camshaft assemblies by correct manufacture of parts without requiring separate balancing for each individual camshaft assembly as manufactured. | 07-01-2010 |
20100224146 | METHOD FOR MANUFACTURING A SHAFT MEMBER HAVING A SINTERED PART BONDED THERETO AND A CAMSHAFT FOR AN INTERNAL COMBUSTION ENGINE - A method for manufacturing a shaft member having a sintered part bonded thereto is simple and provides an increased process yield and a high accuracy in position and angle of the sintered part. A green compact is prepared by subjecting a metal or alloy powder to a compression molding. A projection formed on an outer peripheral surface of the shaft member is embedded into the green compact, while chipping partially the green compact with the projection, to combine the green compact with the shaft member. Then, a sintering is carried out. | 09-09-2010 |
20100224147 | CONCENTRIC CAMSHAFT AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a stop member, and a first lobe member. The first shaft may include an outer radial surface having a first recess extending radially therein. The stop member may be axially fixed within the first recess. The first lobe member may define an inner bore located on the outer radial surface of the first shaft. The first lobe member may include a second recess extending radially into the inner bore. The stop member may extend into the second recess to axially locate the first lobe member on the first shaft. | 09-09-2010 |
20100269769 | Valve Drive for Gas Exchange Valves of an Internal Combustion Engine, Comprising a Movable Cam Support and Twin Worm Gear - A valve drive assembly cooperable with gas exchange valves of an internal combustion engine having a cam shaft and at least one came support rotatably fixed and axially displaceable on the cam shaft and having at least two cam profiles selectively engageable with a roller provided on a follower engageable with a valve comprising a cam support having a cylindrical surface disposed coaxially with a cam shaft, provided with a pair of oppositely inclined, spiral grooves; and means selectively insertable into the grooves, coacting with side walls of such grooves as the cam shaft rotates to effect axial displacement of the cam support. | 10-28-2010 |
20110061614 | CAMSHAFT HAVING A TUNED MASS DAMPER - A camshaft assembly may include a first shaft adapted to be rotationally driven, a first lobe member fixed for rotation with the first shaft, and a torsional damper fixed to the first shaft. The torsional damper may include a mass structure fixed to the first shaft and an elastic member disposed between and coupling the mass structure and the first shaft. The elastic member may have a spring constant providing a first sideband natural frequency and a second sideband natural frequency for the camshaft assembly. | 03-17-2011 |
20110067654 | MULTIPIECE CAMSHAFT ASSEMBLY - A camshaft assembly may include a monolithic camshaft body, a journal member and a thrust ring. The monolithic camshaft body may define lobes and journal regions along an axial extent thereof. The journal member may be separate from and fixed to an axial end of the camshaft body adjacent an end lobe of the camshaft body. The thrust ring may be axially secured to the camshaft assembly at the axial end of the camshaft body. | 03-24-2011 |
20110083626 | CAMSHAFT FOR AN INTERNAL COMBUSTION ENGINE - An internal combustion engine, having a camshaft having at least one one-piece thrust plate, which is arranged and captively fixed between a drive element, and a function element, wherein the drive element and the function element are fixedly joined with the camshaft, wherein the thrust plate is in the cylinder crankcase and is an axial bearing plate and includes at least one of a wear reducing coating and a friction reducing coating, and wherein the thrust plate is guided at a radially outer edge in the cylinder crankcase | 04-14-2011 |
20110100310 | CONCENTRIC CAMSHAFT WITH VARYING WALL GEOMETRY AND METHOD OF ASSEMBLY - A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft. | 05-05-2011 |
20110114046 | INTERNAL COMBUSTION ENGINE COMPRISING AT LEAST ONE CAMSHAFT - An internal combustion engine, having at least one camshaft, which is mounted in the radial direction via at least one bearing block supplied with bearing fluid, wherein in the region of the bearing block, two sealing rings are provided, which are axially spaced apart from each other and which seal an annular chamber supplied with bearing fluid and located between the camshaft and the associated bearing block at least partially in the axial direction. | 05-19-2011 |
20110162600 | CAMSHAFT PROFILE FOR REDUCING CYLINDER PRESSURES DURING ENGINE CRANKING - A camshaft assembly may include a shaft and a lobe member fixed for rotation with the shaft. The lobe member may include a lobe extending radially outward from a base circle. The lobe may include a valve closing profile defined between a peak of the lobe and an ending point of the lobe on the base circle. The valve closing profile may define a closing flank and a closing ramp extending from an end of the closing flank to the ending point. The closing ramp may have a radial extent from the base circle at the end of the closing flank that is less than ten percent of the radial extent of the peak from the base circle and may have a first angular extent of at least ten degrees. A second angular extent defined between the peak and the ending point may be at least eighty degrees. | 07-07-2011 |
20110180027 | Valve Train for Gas Exchange Valves of an Internal Combustion Engine Having a Double-Supported Cam Carriers - The invention relates to a valve train for gas exchange valves of an internal combustion engine, having a base camshaft, a plurality of cam carriers, which are arranged in a rotationally fixed and axially movable way on the base camshaft, as well as stopping devices for retaining the cam carriers in defined displacement positions along the base camshaft, with the stopping devices comprising in each case a pressure-applying element, which is inserted into a recess of the base camshaft and pressed in the radial direction of the base camshaft against an opposite inner circumferential section of the cam carrier. In order to counteract noise generation in the valve train, a first variant of the invention provides an additional pressure-applying element at an axial distance from the pressure-applying element. This additional pressure-applying element is pressed against an opposite inner circumferential section of the cam carrier. According to a second alternative or additional variant of the invention, the pressure-applying elements of different cam carriers are offset in relation to each other in the circumferential direction of the base camshaft. | 07-28-2011 |
20110220044 | CAMSHAFT INCLUDING WEIGHT REDUCING FEATURES AND METHOD OF FORMING - A camshaft assembly may include a assembly and a shaft. The cam assembly may include a hollow structure with an interior surface and an exterior surface. A plurality of projections may be located on the exterior surface of the hollow structure. The interior surface of the cam assembly may define a recess axially aligned with at least one of the plurality of projections. At least one of the plurality of projections may define an undercut portion. The cam assembly may be coupled with the shaft. | 09-15-2011 |
20110226201 | CAMSHAFT - A camshaft assembly configured to rotate about an axis of rotation within the engine of a motor vehicle to provide timing between cyclic operation of engine components is provided. The camshaft assembly includes a member for providing timing to a first engine component. The member includes a cam surface configured to drive the timing of the first engine component, and an opening. The camshaft assembly also includes a camshaft body cast to the member and configured to engage the opening of the member. The camshaft body includes a lobe configured to drive the timing of a second engine component, and a journal configured to allow efficient rotation of the camshaft body about the axis of rotation. The member is formed from a first material and the camshaft body is formed from a second material, thereby allowing the camshaft assembly to withstand two levels of stress. | 09-22-2011 |
20110308487 | METHOD FOR LINKING ELEMENTS TO HOLLOW SHAFTS, PREFERABLY FOR PRODUCING CAMSHAFTS, AND RESULTING CAMSHAFT - A method for the linking of components to hollow shafts, preferably for producing camshafts, is disclosed where the components, especially cam rings, are manufactured so as to generate their function-related contour, that either a hardenable material is used for this purpose which, aside from its elastic deformability, after hardening still has a permissible plastic deformability of minor extent; or that subsequently the surface of the components, particularly the contact face of the cams, is subjected to a surface-hardening process. These components together with the hollow shaft to be deformed are placed into an IHPF tool in a manner to suit the respective function, and that in a second process step through the application of the IHPF process and due to the internal pressure exerted the components are joined to the hollow shaft in a force- and form-closing manner. | 12-22-2011 |
20120000436 | CAM AND ASSOCIATED CAMSHAFT - A cam for a camshaft of an internal combustion engine may include an axial extension with a holding contour for receiving a holding tool. | 01-05-2012 |
20120024245 | VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - A valve train of an internal combustion engine with a camshaft ( | 02-02-2012 |
20120097120 | ENGINE INCLUDING CAMSHAFT WITH PARTIAL LOBE - An engine assembly may include a camshaft rotationally supported on an engine structure. The camshaft may include a first shaft, a second shaft located in and rotatable relative to the first shaft and a partial cam lobe located on the first shaft. The partial cam lobe may include a peak region and may define a partial bore. A radial distance defined by the partial bore between first and second circumferential ends of the partial bore may be greater than or equal to a radial width of the first shaft. The partial cam lobe may define a recess extending in a radial direction through the partial bore and into the partial cam lobe. The camshaft may include a sleeve located within a radial passage defined by the second shaft and the recess in the partial cam lobe and radially locating the partial cam lobe relative to the second shaft. | 04-26-2012 |
20120125272 | VOLUME STORE - A volume store which has a substantially hollow cylindrical housing and a separating element displaceably disposed within the housing. The housing is fixedly disposed within a hollow chamber of a camshaft. | 05-24-2012 |
20120125273 | VALVE TRAIN FOR INTERNAL COMBUSTION ENGINES FOR ACTUATING GAS EXCHANGE VALVES - A valve train includes a a plurality of individual cam sleeves axially displaceable, relative to one another and disposed so as to form the camshaft, each of the plurality of individual cam sleeves including a plurality of different cam profiles each having a same base circle portion and being configured to engage, by switching, one of a plurality of gas exchange valves. A switching shaft is disposed inside the plurality of cam sleeves and configured to rotate together with the plurality of cam sleeves. An encircling switching contour is disposed inside each of the plurality of cam sleeves. A switching pin operatively connects one of the plurality of cam sleeves to the switching shaft, the switching pin configured to slide in the encircling switching contour. An actuator is operatively connected to the switching shaft so as to rotate the switching shaft relative to the plurality of cam sleeves. | 05-24-2012 |
20120132159 | CONTINUOUS VARIABLE VALVE LIFT APPARATUS - A continuous variable valve lift apparatus may include a camshaft, a first cam disposed on the camshaft, an actuating shaft parallel to the cam shaft, an actuating lever connected to the actuating shaft, a swing arm rotatably coupled to the actuating lever and an engine, a second cam pivotally connected to the swing arm and contacting the first cam to open a valve unit and a control portion which is connected to the actuating shaft and selectively rotates the actuating shaft for pivoting center of the swing arm to move. | 05-31-2012 |
20120227689 | Camshaft - A camshaft including a carrier element and a cam, in which the carrier element is composed of carrier segments arranged axially one behind the other along a longitudinal axis such that the carrier segments are axially displaceable relative to each other. | 09-13-2012 |
20120255508 | Valve Lifter of Internal Combustion Engine and Method of Fabricating the Valve Lifter - A valve lifter including a cylindrical portion, a crown portion having a crown surface, a chamfered portion formed on an outer periphery of the crown portion adjacent to an outer peripheral edge of the crown surface and tapered toward the crown surface, and a hard carbon film covering only the crown surface and the chamfered portion. The chamfered portion has a taper angle with respect to an outer peripheral surface of the cylindrical portion on which the hard carbon film is not formed, the taper angle being set to not more than 26.5°. The chamfered portion has a length extending from on a side of the crown surface toward a side of the cylindrical portion in an axial direction of the cylindrical portion, the length being set to not less than 1 mm. | 10-11-2012 |
20120260870 | CAMSHAFT HAVING A SLIDING PIECE WHICH HAS DIFFERENT CAM PROFILES - A camshaft assembly has a rotationally drivable basic camshaft and at least one sliding piece which is mounted in the basic camshaft and can be displaced in the longitudinal direction of the latter, the sliding piece having at least one cam pack with at least two cams with different cam profiles, and having a switching device which has a switch guide plate for displacing the at least one sliding piece into different switching positions of the cams. It is provided in a camshaft of this type that the switching device has a switching shaft which can be rotated about the rotational axis of the basic camshaft with a switch guide plate which has a slotted-guide track, and a slotted-guide pin which is connected to the sliding piece and engages into the slotted-guide track. | 10-18-2012 |
20130014714 | CAMSHAFT INCLUDING WEIGHT REDUCING FEATURES AND METHOD OF FORMING - A camshaft assembly may include a assembly and a shaft. The cam assembly may include a hollow structure with an interior surface and an exterior surface. A plurality of projections may be located on the exterior surface of the hollow structure. The interior surface of the cam assembly may define a recess axially aligned with at least one of the plurality of projections. At least one of the plurality of projections may define an undercut portion. The cam assembly may be coupled with the shaft. | 01-17-2013 |
20130019823 | CAMSHAFT AND ASSOCIATE MANUFACTURING METHOD - The invention relates to a camshaft for an internal combustion engine with a shaft and at least one cam joined therewith, which is connected via a joining surface on the cam side with a joining surface on the shaft side. The joining surface on the cam side and alternatively or additionally the joining surface on the shaft side may be constructed such that they have a predefined roughness. Hereby, the friction between the shaft and the cam can be increased. The invention further relates to a cam for such a camshaft and a method for the manufacture of such a camshaft or respectively of such a cam. | 01-24-2013 |
20130019824 | CAMSHAFT AND ASSOCIATED CAM - A camshaft for a combustion engine has a shaft and at least one cam thermally joined to a joining surface on the shaft side via a joining surface on the cam side. The shaft is embodied as a drawn and not additionally worked tube. Because of this the production of commercial vehicle camshafts can be realised in a more cost-effective manner since these do not have to be additionally ground or turned. | 01-24-2013 |
20130291812 | Internal Combustion Engine Having Valve Lifters With Misalignment Limiting End Caps - An internal combustion engine includes an engine housing defining a cylinder, and a first and a second gas exchange valve for the cylinder, positioned within the engine housing. The engine further includes a valve actuating mechanism having a first and a second valve lifter reciprocating within adjacent lifter bores to actuate the first and second gas exchange valves. Each of the first and second valve lifters includes an end cap having a misalignment limiting projection, limiting rotation of the valve lifter in response to dynamic perturbation. | 11-07-2013 |
20130291813 | Drive Cam and Valve Operating System in Engine - Provided are a drive cam having an improved wear resistant sliding surface that gives the drive cam enhanced durability and a valve operating system in an engine with such a drive cam. The drive cam of the present invention, made of a nitriding steel, has on its sliding surface, a hardened surface formed by nitrocarburizing wherein the hardened layer lies on top of the sliding surface. It is preferred that the driven mechanism used in combination with the drive cam has, in its sliding surface against which the drive cam slides, a chrome-plated layer and thereon a diamond-like carbon coating. | 11-07-2013 |
20140137819 | HEAD PACKAGING FOR CYLINDER DEACTIVATION - Systems and methods for an overhead cam shaft coupled to an inline engine with inner cylinders and outer cylinders are disclosed. In one example approach, an engine bank comprises inner cylinders each having only first and second lift profiles, both being non-zero lift profiles, and outer cylinders each having first, second, and third lift profiles, two being non-zero lift profiles and one being zero lift. | 05-22-2014 |
20140165935 | CAMSHAFT - A camshaft of an internal combustion engine may include at least one function device connected therewith via a shaft-hub connection. The function device may include at least two different function elements each operable for different function | 06-19-2014 |
20140290602 | CAM STRUCTURE - A cam structure driving a tappet having a crowning on a top face and connected to a base end section of an intake or exhaust valve of an engine, includes: a camshaft rotating in synchronization with a crankshaft of the engine; a cam lobe mounted on the camshaft, and including: a base cam including: a base circular section having a mounting hole for the camshaft; and a valve lift section having a cut-out section in a tip end portion; and a roller provided in the cut-out section and having a cylindrical section with a constant diameter. A center section in a width direction of the base cam makes contact with the tappet at a position deviated from a center of the top face of the tappet, and the cylindrical section makes contact with the center of the top face of the tappet. | 10-02-2014 |
20140360448 | CAMSHAFT GUIDE MEMBER - A camshaft guide member is provided for guiding a camshaft through a plurality of axially aligned camshaft bearings in an engine along a camshaft rotation axis. The camshaft guide member includes a first end, a second end and a contact surface extending between the first end and the second end. The camshaft guide member further includes a connecting portion configured to attach the contact surface to the engine between at least a pair of camshaft bearings. | 12-11-2014 |
20150034030 | CAM CARRIER ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE - A cam target wheel for a camshaft of an internal combustion engine is disclosed. The cam target wheel includes a first half-wheel and a second half-wheel. The first and second half-wheels are provided with connecting means for their reciprocal connection. | 02-05-2015 |
20150047585 | BEARING ASSEMBLY IN AN ENGINE HOUSING OF AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ITS MANUFACTURE - An engine housing of an internal combustion engine has at least one bore and a bearing assembly mounted in the bore for rotatably supporting a camshaft via first and second rolling-element bearings that each have an outer ring. A slot-shaped gap extends from the bore through at least a part of the engine housing up to a point at the surface of the engine housing, at least one screw bore is disposed in a first portion of the engine housing on a first side of the slot-shaped gap, a threaded bore is disposed in a second portion of the engine housing on a second side of the slot-shaped gap, and a screw extends through the screw bore, across the slot-shaped gap and into the threaded bore and is configured to pull together the first portion and the second portion to clamp the outer ring. | 02-19-2015 |
20150075457 | CAMSHAFT MODULE AND CORRESPONDING PRODUCTION METHOD - A camshaft module may include a shaft and at least one functional element. The functional element may have a functional element opening through which the shaft passes. The functional element may be fixed to the shaft in a seat portion of the shaft. The camshaft module may include a bearing arrangement in which at least one bearing portion of the shaft is mounted. The shaft may include at least one adjusting portion axially adjacent to the at least one seat portion. The adjusting portion may have a first outer diameter smaller than a second outer diameter of the seat portion. The functional element opening may have an inner diameter smaller than the second outer diameter of the seat portion and larger than the first outer diameter of the adjusting portion such that a press fit fixing is realized between the functional element and the seat portion of the shaft. | 03-19-2015 |
20160017763 | VALVE DRIVE TRAIN DEVICE FOR AN INTERNAL COMBUSTION ENGINE - In a valve drive train device for an internal combustion engine of motor vehicle, wherein at least one axially movably mounted cam element including at least one cam set with at least two cam parts and a shifting gate with at least two gate track for converting a rotary movement of the cam element into an axial shifting motion, at least one of the cam parts and the adjacent gate track are disposed in an at least partially axially overlapping relationship for reducing thereby the axial length and the mass of the cam element or permitting the use of a larger, highly durable, actuating mechanism. | 01-21-2016 |
20160076406 | SYNCHRONOUSLY TIMED COUNTERROTATING CAM AND FOLLOWER APPARATUS - Counterrotating cam and follower apparatuses (C-CAFA) capable of converting reciprocating to rotational motion, and visa versa, utilizing counterrotating cams cooperating with at least one reciprocating cam follower. Apparatus cam counterrotation is ensured to be synchronously timed without necessity of prior art stationary geartrains, by and through apparatus cam follower(s) combining with counterrotating cam surfaces acting as moving follower constraints, provided that disclosed structural limitations, including those regarding cam and follower surface interface engineering slop, multiple degree of freedom cams, rotating and reciprocating follower(s), and electromechanical limitations are met when specified. Optional apparatus usages include reciprocating mass balancer, differential to reverse and or multiply shaft rotations, and apparatus combinations with connecting rods, pistons, cylinders, and or engines. “Adequacy of Constraint and Newtonian Force Analysis, Cam and Follower Surface Kinematical Analysis, and Electromagnetic Cam Analysis” are applied to various disclosed embodiments to teach making, using, and correlation of disclosed apparatus structure to function. | 03-17-2016 |
20160102583 | METHOD FOR MOUNTING A VALVE RAIN OF AN INTERNAL COMBUSTION ENGINE - A method for mounting a valve train ( | 04-14-2016 |
20160102588 | ACTUATOR FOR LIFT-SWITCHABLE VALVE TRAINS OF INTERNAL COMBUSTION ENGINES - An adjustment shaft actuator. The adjustment shaft actuator includes an adjustment shaft arranged parallel to a camshaft of a valve train and having a lever unit with a lever arm, a cam unit that has a cam and that is connected to the camshaft in a non-rotatable manner, whereby the lever unit is arranged so as to be axially movable on the adjustment shaft or the cam unit is arranged so as to be axially movable on the camshaft, and an adjustment unit provided in order to effectuate axial movement between the at least one lever unit and the at least one cam unit, by way of which the at least one lever arm can be brought into effective contact with the cam in order to bring about a rotation of the adjustment shaft by rotating the camshaft. | 04-14-2016 |
20160108764 | METHOD FOR PRODUCING A BUILT CAMSHAFT - An assembled camshaft and a method for producing an assembled camshaft are disclosed. The assembled camshaft may include a camshaft main body having a longitudinal axis. The camshaft main body may include a first axial section and a second axial section disposed between the first axial section and a third axial section. The second axial section may have an outer profile including a toothing extending in an axial direction. At least one sliding cam may be arranged on the second axial section. A drive wheel may be arranged on a free end of the first axial section, and a receiving element may be arranged on at least one of the first axial section and the third axial section. | 04-21-2016 |
20160138434 | ADJUSTABLE CAMSHAFT - An adjustable camshaft can be used in valve drives of internal combustion engines, amongst other places. The adjustable camshaft may include an outer shaft and an inner shaft that is concentric with and rotatably supported in the outer shaft. A cam having a cam bore may be rotatably supported on an outer surface of the outer shaft so as to form a slide bearing gap between the cam and the outer shaft. The cam may be rotatably-fixed to the inner shaft so that the inner shaft and the cam rotate with one another. Furthermore, the adjustable camshaft may include an oil channeling groove disposed beneath the cam in the outer surface of the outer shaft. In many cases, at least one side of the oil channeling groove may be exposed such that it extends beyond the slide bearing gap and the cam. | 05-19-2016 |
20160146062 | CAMSHAFT ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE - A camshaft assembly for an internal combustion engine includes a camshaft, a first lobe set, and a second lobe set, extending along, and rotatable about, a cam axis. The first lobe set includes a first, second, and third lobe. The second lobe set includes a first and second lobe. The first lobe set is movable along the cam axis between a first, second, and third position. The second lobe set is movable along the cam axis between a first and second position. The first and second position of each of the first and second lobe sets corresponds to lift of a respective valve stem in the engine. The third position of the first lobe set corresponds to zero lift of the respective valve stem to provide cylinder deactivation of a corresponding cylinder within the engine. | 05-26-2016 |
20160146072 | ENGINE SYSTEM AND OPERATION METHOD USING ENGINE BRAKING MECHANISMS FOR EARLY EXHAUST VALVE OPENING - A valve actuation system for an internal combustion engine is disclosed. The engine has a first set of cylinders having a first set of exhaust valves and a second set of cylinders having a second set of exhaust valves. The valve actuation system for the exhaust valves includes one or more first cams having a compression-release lobe and a main exhaust lobe adapted to transfer valve actuation motion to the first set of exhaust valves, and one or more second cams having an early exhaust valve opening (EEVO) lobe and a main exhaust lobe adapted to transfer valve actuation motion to the second set of exhaust valves. The valve actuation system may provide any combination of (i) main exhaust valve actuation with or without compression release actuation with (ii) main exhaust valve actuation with or without EEVO for the two sets of cylinders. | 05-26-2016 |
20160177868 | COMPOSITE CAM CARRIER | 06-23-2016 |