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Camshaft Or Cam Characteristics

Camshaft Or Cam Characteristics patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

Related Categories:

Internal-combustion Engines


Poppet Valve Operating Mechanism > With Means For Varying Timing > Camshaft Or Cam Characteristics



Valve timing adjustment apparatus
12/18/14 - 20140366824 - A planetary carrier supports a geared rotor from an inside in a radial direction, and receives a radial load in a first region, which is offset to one end from a center position in an axial direction. A ball bearing roller supports the planetary carrier from an outside in the...

Variable valve timing control device of internal combustion engine
12/18/14 - 20140366825 - When an intermediate lock by an intermediate lock mechanism is released, one of two lock keys, which restricts a shift in a direction opposite to a direction that valve timing of an intake valve has been controlled by controlling the valve timing of the intake valve to a phase-advance side...

Electric control device
12/04/14 - 20140352637 - An electric control device includes: a cam having a variable distance between an outer periphery and a center; a control shaft having one end, which contacts the outer periphery of the cam, and displaceable according to a rotation of the cam to adjust a valve lift amount; a motor rotating...

Camshaft adjusting device
12/04/14 - 20140352638 - A camshaft adjusting device having a vane-type adjuster, which includes a stator which is rotatably drivable by a crankshaft; and a rotor which is rotatably supported in the stator and is connectable to a camshaft, a plurality of radially inwardly projecting projections, which divide an annular space between the stator...

Valve timing control apparatus
12/04/14 - 20140352639 - A valve timing control apparatus is provided with at least one of: an advance-angle control starting device configured to start to control a relative rotational phase of a camshaft with respect to a crankshaft to an advance side when an internal combustion engine starts and when a valve lift amount...

Switching roller finger follower with locking mechanism
11/13/14 - 20140331950 - A switching roller finger follower, including: a housing with a first wall with a first opening, a second wall with a second opening, and an interior space at least partially formed by the walls; first and second outer arms; and a locking pin disposed in the openings and including a...

Camshaft adjusting means
10/02/14 - 20140290607 - A camshaft adjusting means for an internal combustion engine includes an adjusting mechanism which is configured as a three-shaft gear mechanism having a drive side into which the drive moment for the camshaft is introduced, an output side which is connected fixedly to the camshaft so as to rotate with...

Adjustable camshaft drive
09/25/14 - 20140283773 - A camshaft drive includes a drive shaft having at least one cam for actuating a valve of an internal combustion engine. A shaft-in-shaft system is disposed parallel to the drive shaft and has an inner shaft and an outer shaft each having at least one cam for actuating a valve....

Low friction camshaft with electric phaser
09/18/14 - 20140261265 - An exemplary engine assembly includes a crankshaft, and a camshaft having cam lobes mounted thereon. The cam lobes are configured to provide lift to respective devices as a function of a rotation of the camshaft. The cam lobes are circumferentially offset from one another such that a timing of operation...

Shared oil passages and/or control valve for one or more cam phasers
09/18/14 - 20140261266 - A variable cam timing phaser (10) can a drive stator (14) and at least one driven rotor (20, 20a, 20b) mounted for rotation about a common axis. At least one vane-type hydraulic coupling can define at least one expandable fluid chamber (40, 50, 40a, 50a, 40b, 50b) for coupling the...

System for varying cylinder valve timing in an internal combustion engine
09/11/14 - 20140251247 - A variable engine valve timing control system has a cam phase actuator, with first and second actuator ports, to adjust a rotational phase of a camshaft relative to a crankshaft. A first control valve selectively couples the first actuator port to either an engine oil pump or a first valve...

Valve timing control apparatus
09/11/14 - 20140251248 - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, and a lock mechanism including a recess portion, a lock member engageable and disengageable relative to the recess portion, and a biasing member. The recess portion includes a lock groove portion with which the lock member...

Concentric camshaft phaser
09/11/14 - 20140251249 - A concentric cam shaft phaser, including: a first camshaft; a second camshaft located radially inside of the first camshaft; a control gear in contact with the first camshaft and fixedly connected to the first camshaft by a weld, a press fit, or a shrink fit; a rotor non-rotatably connected to...

Camshaft and functional elements for a camshaft
09/04/14 - 20140245980 - The invention relates to a camshaft, in particular for motor vehicle engines, comprising an outer shaft (1), an inner shaft (2) arranged coaxially in the outer shaft (1), first functional elements (3) rigidly arranged on the outer shaft (1), second functional elements (4a, 4b), which are rotatably arranged on the...

Multi-part, joined rotors in hydraulic camshaft adjusters, having joint-sealing profiles, and method for producing the rotors
08/28/14 - 20140238325 - The invention relates to a camshaft adjusting device (1) for an internal combustion engine and to a method for producing a camshaft adjusting device having a stator wheel (10) and a rotor wheel (11), wherein the rotor wheel (11) has a first body part (19) and a second body part...

Engine control system having a cam phaser
08/14/14 - 20140224200 - A control system for a gaseous-fueled engine is disclosed. The gaseous-fueled engine may have an intake valve mechanically driven by a camshaft. The control system may have a variable valve timing device configured to adjust a cyclical opening and closing timing of the intake valve. The control system may further...

Coil and solenoid valve
08/07/14 - 20140216376 - A coil (4) for a solenoid valve (2) in particular for actuating a camshaft adjuster, including a coil carrier (6) with an underside, a pot (8) with a base on which the underside of the coil carrier (6) is placed and with a wall which forms an intermediate space (16)...

Valve timing adjustment system
08/07/14 - 20140216377 - Provided is a valve timing adjustment system having improved control for achieving a target rotational phase. The valve timing adjustment system includes: a displacement mechanism unit that displaces a rotational phase of a camshaft relative to a crankshaft of an internal combustion engine; a locking mechanism unit that locks the...

Camshaft device of a motor vehicle internal combustion engine
07/24/14 - 20140202410 - In a camshaft adjusting device of a motor vehicle internal combustion engine which has an electromagnetic braking unit that includes a stationary actuator having a first braking surface and an axially spaced second braking surface which is movable relative to the first braking surface, the braking unit further includes a...

Phase varying apparatus for automobile engine
07/17/14 - 20140196677 - A phase varying apparatus capable of smoothly varying the phase angle of a camshaft relative to a drive rotor by comprising: a drive rotor supported by a camshaft and driven by a crankshaft; a first control rotor integral with the camshaft; a first torquing mechanism for providing the first drive...

Actuator for lobe switching camshaft system
07/10/14 - 20140190432 - Systems and methods for actuating lobe switching in a camshaft system in an engine are disclosed. In one example approach, a method comprises deploying a first pin into a groove of a camshaft outer sleeve while a second pin remains in place due to an absence of a groove in...

Variable valve actuation apparatus, system, and method
07/10/14 - 20140190433 - A variable valve actuation system in one form includes a rocker coupled with a valve stem at one end and a cam follower at the other end. The rocker is operable to rotate about a fixed axis and the cam follower includes a set of lower rollers operable to follow...

Preassembly of a camshaft phaser
07/10/14 - 20140190434 - A camshaft phasing system (10) for an internal combustion engine (6) includes a camshaft (16) and a camshaft phaser (15) that is axially slid onto the camshaft (16) and that has stator (34) and a rotor (36) driven by the stator (34), whereby the rotor (36) is mounted rotatably relative...

Oil passage design for a phaser or dual phaser
07/10/14 - 20140190435 - A variable cam timing phaser (10) includes a fluid transfer assembly with at least one of a fluid transfer sleeve (72) having a plurality of pressurized fluid passages (74a, 74b, 74c, 74d), and a fluid transfer plate (60) having a plurality of pressurized fluid passages (62a, 62b, 62c, 62d). Each...

Phase-adjusting device of a camshaft for an internal combustion engine
06/26/14 - 20140174386 - A camshaft adjusting device of an internal combustion engine having two camshafts supported concentrically to one another, the axial position of the outer camshaft being determined by an axial bearing and the outer camshaft interacting with a sealing cover of an adjusting apparatus. A first cam is rotationally fixed to...

Phase adjustment circuit and interface circuit
06/26/14 - 20140174387 - In a phase adjustment circuit, a first phase adjuster has a plurality of parallel-connected first inverters that receives an input signal to be phase-adjusted, wherein a first inverter to be activated is selected by a first control signal. A second phase adjuster has a plurality of parallel-connected second inverters that...

Valve timing adjusting system
06/05/14 - 20140150744 - A valve timing adjusting system includes a displacement mechanism unit that displaces a camshaft rotational phase relative to a crankshaft, a locking mechanism unit that locks the rotational phase, and a control unit that controls operations of a hydraulic control valve. The control unit includes a property obtainment unit that...

Engine assembly with phasing mechanism on eccentric shaft for variable cycle engine
05/22/14 - 20140137824 - An engine assembly includes a crankshaft having a first axis of rotation and a crankpin offset from the first axis of rotation. A second shaft is offset from the crankshaft and has a second axis of rotation. A piston is movable in a cylinder between a top dead center position...

Internal combustion engine
05/22/14 - 20140137825 - An internal combustion engine has a multi-link crankshaft drive with a plurality of coupling elements rotatably mounted on crankpins of a crankshaft and a plurality of articulated connecting rods rotatably mounted on crankpins of an eccentric shaft, wherein each of the coupling elements is pivotally connected to a piston connecting...

Valve timing control device and valve timing control mechanism
05/15/14 - 20140130755 - A valve timing control device is switchable between a first state in which a fluid is supplied to a communication flow path to lift a restriction by a restriction member and release a lock by a lock member, a second state in which the fluid is supplied to a retarded...

Variable cam timing system and method
05/08/14 - 20140123921 - A method for operation of an engine is provided. The method includes operating an engine with independent variable intake and exhaust valve timing with an intake valve timing actuator and an exhaust valve timing actuator, locking both the intake and exhaust valve timing actuators in a mid-lock position, and unlocking...

Valve timing control apparatus for internal combustion engine
05/08/14 - 20140123922 - In a valve timing control apparatus for an internal combustion engine, a plurality of projection sections projected toward a cover member are integrally mounted on a bearing member configured to rotatably journalize a camshaft and a plurality of positioning pins are mounted across (or extended over) the cover member and...

Method and mechanism to confirm engine timing
05/01/14 - 20140116364 - A mechanism and method of confirming engine timing in an internal combustion engine includes two embodiments, which delay the rotation of the camshaft until confirmation that the engine is properly timed based upon the sensors provided by the electronic control systems of the motor vehicle. In one embodiment, a cam...

Camshaft adjuster
05/01/14 - 20140116365 - A camshaft adjuster (1) having a control device (4), wherein by means of the control device (4) a selection can be made between an OPA and-or a CTA mode, and the camshaft adjuster (1) has a third hydraulic medium duct CC which positions the camshaft adjuster (1) in a central...

Sliding cam arrangement for variable actuating gas exchange valves of an internal combustion engine
04/17/14 - 20140102391 - A sliding cam arrangement for the variable actuation of gas exchange valves of an internal combustion engine, having a camshaft which has toothing regions with an external toothing, wherein the toothing regions mesh in each case with an internal toothing of a cam carrier, wherein the ratio of base circle...

Camshaft adjuster
04/17/14 - 20140102392 - An arrangement of a camshaft phaser (1) which allows a variable pressure boost in that a rotary piston (7) of the camshaft phaser (1) either creates or eliminates a fluid connection between a first pair of working chambers and a second pair of working chambers arranged in the axial direction...

Split cycle phase variable reciprocating piston spark ignition engine
04/03/14 - 20140090615 - A split cycle phase variable reciprocating piston spark ignition engine comprising a compressor unit having a compression chamber adapted to carry out the intake and compression strokes of a four stroke engine cycle, a power unit having an expansion chamber adapted to carry out the expansion and exhaust strokes of...

Centering slot for internal combustion engine
03/27/14 - 20140083384 - A valve timing control device for an internal combustion engine. The valve timing control device includes a rotor connected to a camshaft and having a plurality of vanes. A stator is engaged with the rotor, and includes a plurality of webs. Pressure chambers are provided between each of the webs...

Camshaft phaser with coaxial control valves
03/27/14 - 20140083385 - A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock...

Electric phasing of a concentric camshaft
03/20/14 - 20140076252 - A concentric cam shaft assembly, including: a first camshaft; a second camshaft including at least a portion disposed radially within the first camshaft; and at least one phasing assembly including first and second electric motors and a first input gear arranged to rotate at a first speed in response to...

Valve timing control apparatus for internal combustion engine and controller for valve timing control apparatus
03/20/14 - 20140076253 - A valve timing control apparatus includes: an urging member to which a set load is provided to act, to the cam shaft, an urging force from one of the most retard angle position and the most advance angle position toward the intermediate phase position; and a controller configured to sense,...

Valve opening-closing timing control apparatus
03/20/14 - 20140076254 - A valve opening-closing timing control apparatus includes a partition portion partitioning a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a phase control portion controlling a rotational phase of a driven-side rotational member relative to a driving-side rotational member, a lock mechanism including a lock...

Camshaft assembly and intermediate cam phasing position
03/20/14 - 20140076255 - A camshaft assembly comprising an outer shaft, an inner shaft received within the outer shaft, and a bushing disposed about the inner shaft, the bushing having an outer surface defining at least one longitudinal groove extending at least partially along a length of the bushing, wherein the longitudinal groove cooperates...

Constructed slide cam unit
03/20/14 - 20140076256 - A reciprocating internal combustion engine having a crankcase in which at least one cylinder and one piston are arranged, having a cylinder head sealing the cylinder, the inlet and outlet channels thereof being controlled by at least one gas exchange valve each, designed as an intake and exhaust valve, which...

Control system for variable valve timing apparatus
03/13/14 - 20140069362 - When a cam shaft phase is changed during engine operation is stopped, a power supply increase control to an electric motor is carried out, according to which a power-supply duty ratio to the electric motor is increased to a predetermined power increase value which is necessary for moving a VVT...

Variable valve timing device
03/13/14 - 20140069363 - In a variable valve timing device, which varies the rotational phase of a camshaft through the relative rotation of a vane rotor and a housing and is provided with a lock mechanism that releases the lock thereof in response to the application of lock-release hydraulic pressure, the crank angle CCA...

Valve open/close timing control system
03/06/14 - 20140060470 - Provided is a valve open/close timing control system where a valve open/close timing control device includes a drive-side rotating member, a driven-side rotating member, a relative rotational phase control mechanism, and a first locking member, in which the internal combustion engine is configured to be started by a drive force...

Housing bell with integrated pressure accumulator having a flanged cover
02/20/14 - 20140048027 - A pressure accumulator for a camshaft phaser of an internal combustion engine, including a housing that accommodates a piston and forms a cavity fillable with a hydraulic fluid. The cavity is configured as a hole and is closed by a cover on at least one side so as to be...

Valve timing control device
02/06/14 - 20140033999 - Provided is a valve timing control device, including a drive side rotating member, a driven side rotating member, and a locking mechanism, in which the locking mechanism includes a regulating body, and n stepped portions with which the regulating body engages, the relative rotation phase is regulated in steps from...

Method for determining a phase position of an adjustable camshaft
02/06/14 - 20140034000 - A method for determining a phase position of an adjustable camshaft of an internal combustion engine having a sensor wheel and a camshaft adjuster. The phase position of the camshaft is determined on the basis of phase flank interrupts triggered by the sensor wheel and a model which depends on...

Three-shaft transmission having an elastic coupling element
01/09/14 - 20140007830 - A triple shaft adjusting gear including a driving part (01) that can be connected rotationally fast to a drive shaft, a driven part that can be connected rotationally fast to a driven shaft and an adjusting member that can be connected to an adjusting shaft. A mechanical stop for limiting...

Camshaft adjuster
01/09/14 - 20140007831 - A configuration of a camshaft phaser (1), which has a drive element (2), and at least two output elements (3, 4), the drive element (2) and the output elements (3, 4) having a plurality of radially oriented vanes (6) which overlap the lateral surfaces (9) of the adjacent element in...

Camshaft adjuster for an internal combustion engine
12/12/13 - 20130327288 - A camshaft adjuster (1, 51) for an internal combustion engine, including a stator (5) which is connectable in a rotationally fixed manner to a crankshaft, a rotor which is mounted in the stator (5) so as to be rotatable about a rotational axis, a sealing cover (7, 53) for minimizing...

Valve timing control apparatus
12/05/13 - 20130319357 - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a fluid chamber, an advanced angle chamber and a retarded angle chamber, a fluid control mechanism, a first intermediate lock mechanism configured to selectively lock a relative rotation phase of the driven-side rotation member relative to...

Three shaft adjustment mechanism with integrated overload coupling
11/28/13 - 20130312682 - A three-shaft adjustment mechanism is provided including a drive part which can be connected to a drive shaft in a rotationally fixed manner, a driven part which can be connected to a driven shaft in a rotationally fixed manner and an actuator which can connected to the adjustment shaft in...

Internal combustion engine provided with balance shafts, and method for controlling such an engine
11/28/13 - 20130312683 - An internal combustion engine including: an even number of inline cylinders, each accommodating a piston; a crankshaft rotatably mounted about an axis; first and second balance shafts rotatably mounted about balancing axes parallel to and separate from the engine axis; and first and second mechanisms for rotating the first and...

Camshaft phaser
11/28/13 - 20130312684 - A camshaft phaser (1), having a drive element (2), an output element (3), and a cover element (4), the cover element (4) being joined in latching-type, form-locking engagement with the drive element or output element (2, 3), and the cover element (4) having play-eliminator that eliminates a play in the...

Camshaft adjusting device
11/07/13 - 20130291815 - An adjusting device for adjusting a camshaft relative to a drive sprocket, which drives the camshaft coaxially. The adjusting device includes an actuating gear which acts between the drive sprocket and the camshaft and is driven via an electric motor to adjust the camshaft. The actuating gear has internally- and...

Using valve timing to improve engine acoustics
11/07/13 - 20130291816 - A method for improving the operation of an internal combustion engine implementing cylinder deactivation is described. Generally, the pattern of combustion events that are fired and skipped together with the geometry of the exhaust and/or intake system can create unpleasant acoustic issues. By slightly altering the timing of the cylinder...

Method for controlling a valve control system with variable valve lift of an internal combustion engine by operating a compensation in response to the deviation of the characteristics of a working fluid with respect to nominal conditions
10/31/13 - 20130284133 - substituting for said real temperature value an equivalent temperature value consisting of a temperature value at which the hydraulic fluid having nominal characteristics would produce performance of the solenoid valves corresponding to the performance resulting from the aforesaid deviation so that each solenoid valve is governed as a function of...

Spool valve
10/31/13 - 20130284134 - A spool valve for controlling a twin phaser for coupling a drive member to two driven members and to enable the phase of the two driven members to be varied independently includes a bore operably associated with the twin phaser, fluid channels opening into the bore, and a spool. The...

Camshaft phaser having a spring attached to the pin of a screw
10/24/13 - 20130276735 - A camshaft phaser (1) having a stator (2) and a rotor (16), whereby at least one cover (18) is attached to the stator (2) by means of at least one screw (5) that has a head (8), whereby a spring (14) is joined to the rotor (16) and to the...

Valve timing controller
09/12/13 - 20130233263 - A valve timing controller includes a housing, a vane rotor, a bush fixed to the vane rotor so as to support the housing in a relatively rotatable state, a coil spring provided to the bush and a retainer contacting the coil spring at least one point in the cross-section perpendicular...

Camshaft adjuster
09/12/13 - 20130233264 - A camshaft adjuster (1) is provided with a drive element (2) and an output element (3), including a locking mechanism (5) which is arranged in a locking bore (6) and has precisely two locking pistons (8, 9) and a locking spring (7), the locking bore (6) is formed in the...

Filter arrangement of a control valve for a camshaft adjuster
09/05/13 - 20130228143 - A filter arrangement (2) of a control valve (1) for a camshaft adjuster is provided in which the filter arrangement (2) has a filter (3) and a frame (4) with two articulated legs (5, 6) that are each provided with a change in cross section in a peripheral direction (10),...

Insert part for camshaft adjuster with center locking
08/29/13 - 20130220252 - A camshaft adjustment device (1) for an internal combustion engine of a motor vehicle, with a drive part (3), such as an outer stator, and a driven part (4), such as an inner rotor. The driven part is supported so that it can rotate relative to the drive part between...

Cam torque actuated phaser with mid position lock
08/29/13 - 20130220253 - A cam torque actuated variable cam timing phaser can include a rotor (20) enclosed by an endplate (64) within a housing (10). The housing (10) can have at least one cavity (10a) to be divided by a vane (22) rigidly attached to the rotor (20). The vane (22) can divide...

Central valve for a camshaft adjuster
08/22/13 - 20130213330 - A central valve (1) of a camshaft adjuster (9) is provided having a deep drawn housing (2)....

Rotor for a camshaft adjuster, and camshaft adjusting system
08/22/13 - 20130213331 - The invention relates to a rotor (1, 71) for a camshaft adjuster, comprising a substantially annular rotor basic body (3, 73) which has an end surface (11, 91) with a contour (15, 89) which extends in an axial direction, wherein the contour (15, 89) has an asymmetry such that precisely...

Variable valve operating apparatus
08/22/13 - 20130213332 - A variable valve operating apparatus includes a drive camshaft that is rotationally driven by the rotational force of the crankshaft, and a driven cam lobe that is rotatably supported by the drive camshaft. The variable valve operating apparatus further includes a guide member that has a raceway surface formed so...

Variable cam phaser for automobile engine and controller therefor
08/15/13 - 20130206089 - This invention provides an improved variable cam phaser for an automobile engine equipped with a controller capable of enabling execution of a given phase angle varying command in a shortened response time. The variable cam phaser has two control rotors which are arranged coaxial with a camshaft and rotatable relative...