Daimler Chrysler Ag

Daimler Ag

Daimlerchrysler Corporation

Daimer Ag

Kai Lehmann

Jörg Rösener

Thomas Stolk

Alexander Von Gaisberg-Helfenberg

Timo Schmidt

Tilmann Roemheld

Jens-Uwe Plank

Bernd Neubauer

Marc Maronde

Matthias Eppinger

Georg Leipner

Holger Rudzinski

Christian Haser

Tilmann Römheld

Thomas Gramkow

Jens Plank

Gerald Bolz

Michael Scheele

Holger Rudsinzki

Matthias Heinze

G&ouml;tz Von Esebeck

A device for adjusting a motor vehicle valve train includes at least one camshaft with at least four cam elements arranged in an axially displaceable manner. In each case two of the cam elements that are adjacently situated are formed as a cam element group to be switched together.

Internal combustion engine valve train adjustment device

In a motor vehicle valve train adjustment device comprising at least one camshaft with at least two axially displaceable cam elements wherein at least one cam element has a cam track with a valve lift and a cam track with zero valve lift for a deactivation of at least one cylinder, and at least one other cam element of the at least two axially displaceable cam elements has a cam track with a first valve lift and a cam track with a second valve lift by which a cylinder which remains fueled during a partial cylinder deactivation is adapted to the at least one cylinder deactivation by special valve lift characteristics.

Motor vehicle valve train adjustment device

In a hydraulic camshaft adjuster for a camshaft of an internal combustion engine and a method of assembling the camshaft adjuster including an inner body, which is connected to the camshaft in a rotationally fixed manner and has outwardly extending blades and an outer body which has inwardly projecting blades which form, together with the outwardly extending blades, at least one hydraulic medium chamber between two housing side covers connected to the outer body and operatively connected to a crankshaft of an engine so as to be driven thereby, a locking bolt is provided for locking the inner body in relation to the outer body with a predetermined play.

Hydraulic camshaft adjuster and method for assembling the same

In a sealing element, in particular for forming a seal between an impeller or rotary piston of a pivoting motor and a component surrounding the impeller, wherein the sealing element includes a base body with a first spring element integrally formed on a basic body for generating a first sealing pressure force, the basic body has an inner space to which a pressure medium is admitted in order to generate a second sealing pressure force intensifying the first sealing pressure force.

Sealing element and pivoting motor

In a camshaft adjuster for an internal combustion engine comprising a control valve having a control piston slidably supported in a valve housing, an operating unit for adjusting the angular position of the camshaft relative to a crankshaft of the engine and a drive unit with an electric motor and a transmission structure for actuating the control piston, the transmission is non-self-locking so that backward movement of the valve piston can be achieved by a backward force on the valve piston.

Camshaft adjuster of an internal combustion engine

In a locking device for a camshaft adjuster comprising a drive housing with a rotor with spaced rotor vanes disposed in the drive housing between circumferentially spaced axial walls projecting radially inwardly so as to form operating chambers at opposite sides of the rotor vanes to which hydraulic fluid can be selectively admitted for controlling the relative angular position between the rotor to which a camshaft is connected and the drive housing which is driven by the crankshaft of the engine, wherein locking bolts are provided for interlocking the drive housing and the vane rotor and disposed in one of the housing and the rotor elements while a recess is formed in the other for receiving the locking bolt in order to interlock the drive housing and the vane rotor, the locking bolt is arranged in the hydraulic fluid supply path to the operating chambers upstream of the operating chamber in such a way that hydraulic fluid admission to the operating chambers is controlled by the locking bolt and is admitted to the operating chambers by the movement of the locking bolt to the release position.

Locking device for a camshaft adjuster

In a hydraulic camshaft adjuster for an internal combustion engine including a hydraulic operating unit for adjusting the angular position of the camshaft relative to a camshaft drive by way of a hydraulic control valve with a valve housing in which a control piston is disposed for controlling the supply of hydraulic fluid to, and its removal from, the hydraulic operating unit and to which hydraulic fluid is supplied from the camshaft by way of a pressure channel which is formed into the valve housing so as to extend along the outer surface thereof and a sleeve tightly surrounds at least the part of the valve housing which includes the channel for tightly covering the channel.

Hydraulic camshaft adjuster for an internal combustion engine

A camshaft adjuster for an internal combustion engine having hydraulic medium guides. The adjuster can include a setting unit that can be controlled by a control unit using these guides in the adjuster, wherein the setting unit is for adjusting an angle of a camshaft. This setting unit has an inner body coupled to the camshaft so as to rotate with it, and an outer body that is mounted to rotate relative to the camshaft via a drive connection which runs from a crankshaft to the camshaft. The camshaft has at least one insert part permanently inserted camshaft wherein these two components together form at least one hydraulic medium guide at least in partial regions over its axial length. This design is to create a camshaft adjuster which is in interaction with a camshaft having an insert part so that there is a simple and reliable supply of hydraulic medium to the camshaft adjuster and in particular to its control device.

Camshaft adjuster for an internal combustion engine having hydraulic medium guides

In a camshaft adjustment control device for an internal combustion engine arranged in the drive train for a camshaft, with an inner body connected to the camshaft and an outer body rotatable relative to the inner body, and a control space between the inner and the outer bodies to which hydraulic fluid can be supplied for adjusting the relative angular positions of the inner body connected to the camshaft and the outer body driven by the crankshaft, the inner body is mounted to the camshaft by a bolt having a central bore in which a control spool valve is disposed controlling the flow of fluid to and from the control space and a check valve is arranged in the supply lines of the hydraulic fluid to the control spool valve which check valve opens when a certain pressure is applied thereto.

Camshaft adjustment control device

In a device for changing the angle of rotation of a camshaft arranged in a cylinder head of an internal combustion engine relative to a drive wheel of the internal combustion engine, wherein a hydraulic adjusting arrangement is arranged between the drive wheel and the camshaft and is connected to a fluid circuit of the internal combustion engine, and wherein the fluid supply to the adjusting arrangement is controlled by an on/off valve, the on/off valve is mounted near the camshaft and is supplied with fluid via the camshaft.

Device for changing the angle of rotation of a camshaft relative to a drive wheel of an internal combustion engine

In a camshaft adjustment device for an internal combustion engine, with at least one sensor unit and one actuator unit, at least two functional units are supported on a common carrier unit and combined into a module for mounting on the internal combustion engine.

Camshaft adjustment device for an internal combustion engine

A device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed, in particular between a chain wheel and a camshaft of an internal combustion engine, includes, as an actuating drive, an electrically commutated electric motor with, as coil part, a stator arranged fixedly relative to the housing.

Device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed

A control device for a cooling part-circuit and a heating part-circuit of an internal combustion engine. The cooling part-circuit includes a radiator and the heating part-circuit includes a heat exchanger. A delivery pump is connected to at least the cooling part-circuit and the heating part-circuit. The control device includes a rotary slide driven by a drive unit which is arranged in a valve housing. Provided in the valve housing are inlet or outlet openings for 1.) a cooling part-circuit which is connected to the radiator, 2.) a suction or pressure side of the delivery pump and 3.) at least two further part-circuits. The rotary slide is constructed as a substantially flat rotary disc with at least one control edge.

Control device for the cooling and heating circuit of an internal combustion engine

A water pump for the cooling circuit of an internal combustion engine. The water pump includes a pump housing and a pump device driven in the pump housing. A servo valve having a rotary gate is integrated in the pump housing. The rotary gate is approximately sleeve-shaped and is provided with an axial main opening for supply or discharge of cooling medium to the suction or pressure side of the pump device. Inlet and discharge openings for a cooler line connected to a cooler and for at least one additional partial circuit are provided in the peripheral wall of the pump housing. The rotary gate has on its peripheral wall a control opening with an opening width through which a connection from the main opening is created to an individual inlet or discharge opening, or an overlapping connection is created to two adjacent inlet or discharge openings for mixed operation.

Water pump for the cooling circuit of an internal combustion engine

A control device for the coolant and heating circulation circuit of an internal combustion engine having a radiator, a feed pump, and a heat exchanger. The control device includes a rotary slide valve arranged in a valve housing. The rotary slide valve has at least nearly a sleeve shape and is provided with an axial collector opening for the feed or removal of coolant to or from the intake or delivery side of the feed pump. Provision is made in the circumferential wall of the valve housing for inlet or outlet openings for a bypass-circulation line of the coolant, for a radiator line connected to the radiator, and for a heating line leading to the heat exchanger of the heating circulation circuit. The rotary slide valve has, in its circumferential wall, a control opening having an opening through which a connection is established from the collector opening to one individual inlet or outlet opening or, for a mixed operation, through which an overlapping connection is established to two adjacent inlet or outlet openings.

Growing community of inventors

Ludwigsfelde, Germany

Kai Lehmann