Abstract:
Described is a valve tappet, comprising a rocker (2) oscillating about a respective axis (A) of oscillation for controlling the movement of at least one valve (3), an electrical operational element (5) supported by the rocker (2), the electrical operational element (5) being designed to perform a function associated with the operation of the rocker (2).
Abstract:
Ein Steuergerät (SG) zum Steuern einer Phasenlage einer ersten Nockenwelle einer Verbrennungskraftmaschine weist einen ersten Kennfeldgeber (KG1) zum Ermitteln einer dynamischen Soll-Phasenlage (dSP1) der ersten Nockenwelle auf und einen zweiten Kennfeldgeber (KG2) zum Ermitteln einer statischen Soll-Phasenlage (sSP1) der ersten Nockenwelle. Das Steuergerät (SG) weist außerdem einen ersten Interpolator (IP1) zum Ermitteln einer korrigierten Soll-Phasenlage (kSP1) der ersten Nockenwelle auf Grundlage der von dem ersten Kennfeldgeber (KG1) ermittelten dynamischen Soll-Phasenlage (dSP1) der ersten Nockenwelle und der von dem zweiten Kennfeldgeber (KG2) ermittelten statischen Soll-Phasenlage (sSP1) der ersten Nockenwelle auf.
Abstract:
It is provided an improved internal combustion engine unit. The engine unit has a piston moving in a cylinder enclosing cylinder volume, an intake valve controlling closing and opening of an intake aperture connecting the cylinder volume to an intake manifold, and an exhaust valve controlling closing and opening of an exhaust aperture connecting the cylinder volume to an exhaust manifold. The improved engine unit includes a separating aperture between the cylinder and a separation chamber, and a separating valve adapted for controlling closing and opening the separating aperture. The separation chamber is connectable to the intake manifold and to the exhaust manifold, respectively, by the intake and exhaust apertures. Opening both the separating valve and the exhaust valve enables gas flow from the cylinder volume to the exhaust manifold through the open separating aperture, the separation chamber and the open exhaust aperture. Opening both the separating valve and the intake valve enables gas flow from the intake manifold to the cylinder volume through the open intake aperture, the separation chamber and the separating aperture. The intake valve and the exhaust valve are driven by solenoids controlled in turn by an engine computer. The separating valve is driven by a camshaft driven in turn by the engine.
Abstract:
Die Erfindung betrifft eine Verstellvorrichtung zum elektrischen Verstellen der relativen Drehwinkellage zweier Wellen, insbesondere einer Nockenwelle (15) gegenüber einer Kurbelwelle eines Verbrennungsmotors, mit einem als Dreiwellengetriebe ausgebildeten Verstellgetriebe, das ein kurbelwellenfestes Antriebsteil, ein nockenwellenfestes Abtriebsteil und eine mit einer Verstellmotorwelle (32) eines elektrischen Verstellmotors (3) drehfest verbundene Verstellwelle (13) aufweist, wobei der Verstellmotor (3) als bürstenloser Gleichstrommotor mit einem gehäusefesten Stator (35) und einem Dauermagnetrotor (34) ausgebildet ist. Eine hohe Verstellgenauigkeit und Verstellgeschwindigkeit bei geringem Platz- und Energiebedarf wird dadurch erreicht, dass als Verstellgetriebe Doppelexzentergetriebe (2) und ein Doppelplanetengetriebe vorgesehen sind, die eine Untersetzung von vorzugsweise bis 1 : 250 und eine geringe Reibung aufweisen und dass für den Verstellmotor (3) ein hochinduktiver Dauermagnetrotor (34) vorgesehen ist.
Abstract:
Disclosed is an apparatus for controlling a position of an electromagnetically operated engine valve for an internal combustion engine. During the engine stop, a controller determines whether a cranking operation failure causes the engine stop (a step S1) or an engine stall causes the engine stop (a step S2). In a case where an ignition switch is turned to ON with the engine stop or the ignition switch is turned to OFF with the engine stop due to the failure in the cranking operation, the engine valve (either an intake valve or exhaust valve) is held at a valve open position or a valve closure position for a predetermined period of time based on an engine coolant temperature or the number of times the number of times the cranking operations have failed after the engine stops (steps S3 through S8). Thus, it is not necessary to initialize the engine valve at a time of the engine restart during the engine stall or during an idle stop. The engine can quickly be restarted with a power consumption saved.
Abstract:
The invention relates to a method for controlling an electromagnetic valve drive mechanism for a gas exchange valve in an internal combustion piston engine, whose flow is controlled by a motor, characterized in that the flow of the catching magnet is controlled by a sensor system in such a way that the valve and the armature touch down softly on the seat and the pole face respectively.
Abstract:
The invention relates to a circuit for controlling electromechanically actuated gas exchange valves (5, 6). Placement control elements (2, 3) in said circuit control the output stage of the electromechanically actuated gas exchange valves (5, 6) and regulate the gentle placement of the gas exchange valves (5, 6) in their respective end positions. A digital communication computer (1) that is provided for communicating with the operational control device (9) of the internal combustion engine supplies time control signals to the placement control elements (2, 3). As a result, the placement control elements (2, 3) do not have to perform communications tasks and are devoted to placement control in real time.
Abstract:
During the failure or disruption of the data interchange between the valve control unit (1, 2) and the operation control unit (9) of an internal combustion engine comprising electromechanically actuated intake valves (5a, 5b), the valve control unit (1, 2) changes the electromechanical actuation of the intake valves (5a, 5b) to full load control times, and the operation control unit (9) adjusts a throttle valve (12) in order effect the load control of the internal combustion engine in a manner which no longer uses valve load control, but uses throttle valve load control during emergency operation.
Abstract:
A device for driving a solenoid valve having a drive circuit that controls an exciting current for opening/closing a plurality of valve elements and can be constituted of a small number of switching means. The valve elements are grouped into valve element groups each composed of two valve elements and the drive circuit is provided so as to drive each valve element group. The drive circuit is composed of three serial circuits constituted by connecting three switching means in series between a high-voltage side first power supply terminal and a low-voltage side second power supply terminal. Four electromagnets corresponding to the valve element groups connect serial connecting sections among the switching means by means of the different serial circuits.