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

Axially Shiftable Camshaft

Axially Shiftable Camshaft 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 - 20140261267 - Multistage variable valve lift apparatus, system and engine
A multistage variable valve lift apparatus includes: a camshaft; a plurality of cams slidably provided on the camshaft and each including a cam base with a guide projection and a cam lobe; a solenoid unit that includes an operating rod with a guide slot into which the guide projection is...

09/11/14 - 20140251250 - Multiple variable valve lift apparatus
A multiple variable valve lift apparatus has a simple design that efficiently operates without interference. The apparatus according may include: a camshaft formed in a hollow cylinder shape; a control shaft disposed in the hollow of the camshaft; a cam that rotates together with the camshaft; a cam rod connecting...

08/28/14 - 20140238326 - Valve operating device of engine
A valve operating device for an engine is provided. The device includes at least two cam elements per one shaft. End face cams are formed in opposing end faces of two adjacent cam elements, and the end face cams respectively have protruding portions being formed offset in phase so that...

06/19/14 - 20140165940 - Multiple variable valve lift apparatus and engine provided with the same
A multiple variable valve lift apparatus may include a camshaft, a plurality of cams slidably fitted on the camshaft and each having a cam base with a guide groove and a cam lobe, a solenoid valve including an actuating rod capable of being selectively inserted into the guide groove of...

05/29/14 - 20140144401 - Camshaft having an axially displaceable cam pack
A camshaft includes a carrier shaft which can be mounted rotatably along a shaft axis and at least one cam pack disposed axially displaceably on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The...

05/22/14 - 20140137826 - Camshaft with an axially displaceable cam pack
A camshaft includes a carrier shaft to be mounted rotatably in a shaft axis and at least one cam pack axially displaceable on the carrier shaft. The cam pack includes at least two cams and at least one adjusting member for axial adjustment of the cam pack. The cams and...

11/21/13 - 20130306014 - Internal combustion engine valve actuation control arrangement
In an internal combustion engine a valve actuation control arrangement is provided, which has at least three independently axially displaceable cam elements and a switch gate which has at least one continuous gate track for displacing the at least three cam elements sequentially one after the other....

05/02/13 - 20130104824 - Adjustable camshaft
An adjustable camshaft having at least one shaft, and having at least one cam package which has at least two different cams and/or cam contours. According to the invention, the cams and/or the cam contours of the cam packages have different widths....

02/28/13 - 20130047944 - Internal combustion engine and valve drive for an internal combustion engine
An internal combustion engine having a cylinder head and a cylinder head cover, wherein in order to activate charge cycle valves, at least one rotatably mounted cam shaft is provided with at least one sliding cam which can be slid axially on the respective cam shaft, wherein the respective sliding...

01/31/13 - 20130025554 - Valve drive for internal combustion engines for actuating gas exchange valves
A valve drive device for switching the stroke of gas exchange valves of an internal combustion engine includes a camshaft configured, at least in part, as a hollow shaft. A cam unit includes at least two different cams disposed on the camshaft so as to be rotationally engaged and axially...

01/03/13 - 20130000581 - Actuator unit having two actuator pins
An internal combustion piston engine having gas exchange valves actuated by cams of a camshaft. The cams are sliding cams having two cams per sliding cam unit situated on a basic shaft in rotationally fixed fashion but axially displaceable. At least one actuator unit has two actuator pins for displacing...

12/13/12 - 20120312263 - Variable geometry cam shafts for multiple-cylinder internal combustion engines
A method of conserving fuel in the operation of multi-cylinder internal combustion engines. The present method described here allows a portion of the cylinders of an internal combustion engine to be de-activated when less power is required, thus allowing the engine to provide full power when required, or less power...

09/13/12 - 20120227697 - Valve drive for an internal combustion engine
A valve drive for an internal combustion engine, wherein in order to activate gas exchange valves at least one camshaft having at least one sliding cam which can be displaced axially on the camshaft is provided, wherein the respective sliding cam has a sliding block section with a plurality of...

06/07/12 - 20120138000 - Valve drive arrangement
In a valve drive arrangement of an internal combustion engine, having a first camshaft unit which comprises an outer shaft and primary cams connected to the outer shaft, a second camshaft unit which comprises an inner shaft disposed in the outer shaft, secondary cams connected to the inner shaft and...

06/07/12 - 20120138001 - Variable valve train for internal combustion engines for actuating gas exchange valves
A variable valve train for actuating a plurality of gas exchange valves of an internal combustion engine includes 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 include a plurality of...

06/07/12 - 20120138002 - Variable valve operating apparatus for internal combustion engine
A changeover mechanism to switch operating characteristics of valves for each cylinder of first and second cylinder groups is provided. The changeover mechanism includes link shafts as a rigid member which is displaced when being engaged with a helical guide rail as a result of the actuation of an electromagnetic...

02/16/12 - 20120037106 - Valve train for internal combustion engines for actuating gas exchange valves
A valve train for an internal combustion engine for actuating gas exchange valves includes a camshaft in the form of a camshaft tube driven by a crankshaft of the internal combustion engine. A selector shaft is disposed in the camshaft tube. A surface of the selector shaft includes a shifting...

02/09/12 - 20120031361 - Internal combustion engine
Disclosed herein is an internal combustion engine having a plurality of cylinders, a crankcase, a cylinder head and a cylinder-head cover, the cylinder head being formed from a cylinder-head lower part and a camshaft housing which is positioned between the cylinder-head cover and the cylinder-head lower part, and at least...

02/09/12 - 20120031362 - Electromagnetic camshaft adjustment device
An electromagnetic camshaft adjusting device has an armature unit, which can be moved relative to a yoke and core unit by energizing a stationary coil unit and which is designed to carry out an axial actuating movement and to exert a correspondingly axially directed actuating force on a rotating internal...

01/12/12 - 20120006292 - Valve drive of an internal combustion engine
A valve drive of an internal combustion engine with variable-lift gas exchange valve actuation. The valve drive has a camshaft with a support shaft and a cam piece arranged on the support shaft for conjoint rotation therewith and to be movable between axial positions. The cam piece has two cam...

12/29/11 - 20110315105 - Variable valve lift apparatus
A variable valve lift apparatus may include a control shaft slidably disposed within a camshaft, a cam which is slidably disposed to the camshaft and a high lift cam lobe and a low lift cam lobe is formed thereto, a valve opening/closing unit contacting the cam and a control portion...

12/15/11 - 20110303172 - Valve drive of an internal combustion engine having an adustment device
A valve drive for controlling gas exchange valves of an internal combustion engine. The valve drive has at least one valve camshaft that is supported within a cylinder head of the engine and that can be moved in rotation by a drive disk and an adjustment device, which has an...

10/13/11 - 20110247577 - Valve drive of an internal combustion engine
A valve drive of an internal combustion engine is provided, having a camshaft (1) which includes a carrier shaft (2) and a cam part (3), which is arranged thereon in a rotationally fixed manner and displaceable between two axial positions and which has at least one cam group of directly...

09/22/11 - 20110226205 - Valve train with camshaft with an axially displaceable cam unit
A valve train for an internal combustion engine includes a camshaft with a cam unit for actuating a gas exchange valve. The cam unit has at least two cam paths arranged axially one behind the other and is arranged on the camshaft in a rotation-resistant and axially displaceable manner, and...

08/25/11 - 20110203541 - Valve drive train arrangement
In a valve drive train device of an internal combustion engine, comprising a phase adjustment device for the adjustment of a phase position between a primary cam and a secondary cam which belong to a same category and which are arranged coaxial with one another, at least one is assigned...

08/04/11 - 20110185995 - Splined-shaft connection and valve timing mechanism with a splined-shaft connection between a camshaft and displaceable cam carriers
The invention relates to a splined-shaft connection between a hollow shaft or hub provided with an internal toothing system and a shaft provided with an external toothing system. In order to enable radial play compensation in the splined-shaft connection and radial support and centering of the hollow shaft or hub...

04/07/11 - 20110079191 - Valve drive train device
In a valve train device, particularly of an internal combustion engine, which device has an actuating device for displacing at least one axially displaceable cam element and a gear shifting gate for axially displacing the cam element and furthermore at least one switch unit with a switch element and an...

11/18/10 - 20100288218 - Valve drive device
In a valve drive arrangement for an internal combustion engine including a camshaft carrying axially movable cam elements provided with cams for operating gas exchange valves of the internal combustion engine and an actuation device having at least one shift element which is provided to shift cam element by means...

01/21/10 - 20100012062 - Actuator device and variable valve apparatus of internal combustion engine
There is provided an actuator device for a variable valve apparatus. The variable valve apparatus has a control shaft to vary operation characteristics of an engine valve by an axial movement thereof. The actuator device has a rotatable screw shaft, a movable member axially movable with rotation of the screw...

03/19/09 - 20090071427 - Valve drive for an internal combustion engine
A drive valve for an internal combustion engine comprising a variable hub profile for a valve having a lever supported on a variable support point by means of a switchable support element which provides possibilities for influencing the hub profile and alternatively and cumulatively, the cam is axially displaced such...

03/12/09 - 20090064952 - Valve drive for an internal combustion engine
The invention relates to a valve drive for internal combustion engines, comprising at least one cam assembly which can be axially displaced on a camshaft. The assembly consists of at least two cams having different profiles and actuating optionally at least one gas exchange valve for adjusting different valve lifts...