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Internal-combustion Engines > Poppet Valve Operating Mechanism > With Means For Varying Timing > Camshaft Or Cam Characteristics

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.

09/18/14 - 20140261265 - Low friction camshaft with electric phaser
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...

09/18/14 - 20140261266 - Shared oil passages and/or control valve for one or more cam phasers
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...

09/11/14 - 20140251247 - System for varying cylinder valve timing in an internal combustion engine
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...

09/11/14 - 20140251248 - Valve timing control apparatus
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...

09/11/14 - 20140251249 - Concentric camshaft phaser
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...

09/04/14 - 20140245980 - Camshaft and functional elements for a camshaft
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...

08/28/14 - 20140238325 - Multi-part, joined rotors in hydraulic camshaft adjusters, having joint-sealing profiles, and method for producing the rotors
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...

08/14/14 - 20140224200 - Engine control system having a cam phaser
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...

08/07/14 - 20140216376 - Coil and solenoid valve
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)...

08/07/14 - 20140216377 - Valve timing adjustment system
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...

07/24/14 - 20140202410 - Camshaft device of a motor vehicle internal combustion engine
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...

07/17/14 - 20140196677 - Phase varying apparatus for automobile engine
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...

07/10/14 - 20140190432 - Actuator for lobe switching camshaft system
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...

07/10/14 - 20140190433 - Variable valve actuation apparatus, system, and method
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...

07/10/14 - 20140190434 - Preassembly of a camshaft phaser
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...

07/10/14 - 20140190435 - Oil passage design for a phaser or dual phaser
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...

06/26/14 - 20140174386 - Phase-adjusting device of a camshaft for an internal combustion engine
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...

06/26/14 - 20140174387 - Phase adjustment circuit and interface circuit
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...

06/05/14 - 20140150744 - Valve timing adjusting system
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...

05/22/14 - 20140137824 - Engine assembly with phasing mechanism on eccentric shaft for variable cycle engine
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...

05/22/14 - 20140137825 - Internal combustion engine
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...

05/15/14 - 20140130755 - Valve timing control device and valve timing control mechanism
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...

05/08/14 - 20140123921 - Variable cam timing system and method
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...

05/08/14 - 20140123922 - Valve timing control apparatus for internal combustion engine
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...

05/01/14 - 20140116364 - Method and mechanism to confirm engine timing
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...

05/01/14 - 20140116365 - Camshaft adjuster
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...

04/17/14 - 20140102391 - Sliding cam arrangement for variable actuating gas exchange valves of an internal combustion engine
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...

04/17/14 - 20140102392 - Camshaft adjuster
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...

04/03/14 - 20140090615 - Split cycle phase variable reciprocating piston spark ignition engine
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...

03/27/14 - 20140083384 - Centering slot for internal combustion engine
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...

03/27/14 - 20140083385 - Camshaft phaser with coaxial control valves
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...

03/20/14 - 20140076252 - Electric phasing of a concentric camshaft
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...

03/20/14 - 20140076253 - Valve timing control apparatus for internal combustion engine and controller for valve timing control apparatus
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,...

03/20/14 - 20140076254 - Valve opening-closing timing control apparatus
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...

03/20/14 - 20140076255 - Camshaft assembly and intermediate cam phasing position
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...

03/20/14 - 20140076256 - Constructed slide cam unit
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...

03/13/14 - 20140069362 - Control system for variable valve timing apparatus
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...

03/13/14 - 20140069363 - Variable valve timing device
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...

03/06/14 - 20140060470 - Valve open/close timing control system
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...

02/20/14 - 20140048027 - Housing bell with integrated pressure accumulator having a flanged cover
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...

02/06/14 - 20140033999 - Valve timing control device
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...

02/06/14 - 20140034000 - Method for determining a phase position of an adjustable camshaft
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...

01/09/14 - 20140007830 - Three-shaft transmission having an elastic coupling element
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...

01/09/14 - 20140007831 - Camshaft adjuster
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...

12/12/13 - 20130327288 - Camshaft adjuster for an internal combustion engine
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...

12/05/13 - 20130319357 - Valve timing control apparatus
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...

11/28/13 - 20130312682 - Three shaft adjustment mechanism with integrated overload coupling
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...

11/28/13 - 20130312683 - Internal combustion engine provided with balance shafts, and method for controlling such an engine
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...

11/28/13 - 20130312684 - Camshaft phaser
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...

11/07/13 - 20130291815 - Camshaft adjusting device
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...

11/07/13 - 20130291816 - Using valve timing to improve engine acoustics
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...