Audi Ag

Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr

Ecomotors, Inc.

Roger Budde

Tyler R Garrard

Andreas Werler

Franz J Laimboeck

Matthias Brendel

Markus Meyer

Karl-Heinz Hartwig

An internal combustion engine has a multi-joint crank drive wherein the multi-joint crank driver includes a plurality of coupling members which are rotatably supported on crank pins of a crank shaft and a plurality of hinged connecting rods which are rotatably supported on crank pins of an eccentric shaft wherein each of the coupling members is pivotally connected to a piston connecting rod of a piston of the internal combustion engine and one of the articulation connecting rods. In order to enable to largely or completely compensate inertia forces, it is proposed according to the invention to equip the internal combustion engine with a single balance which serves for neutralizing second order inertia forces.

In-line internal combustion engine having a multi-joint crank drive and a single balance shaft for damping second-order inertia forces

Master and slave pullrods are disclosed in which a master pullrod is coupled to a journal of a crankshaft. The slave pullrod indirectly couples to the crankshaft by coupling to the master pullrod. Such a configuration allows two connecting rods to be coupled to the journal of the crankshaft inline with each other.

Master and slave pullrods

An actuating drive for valve drives having a variably adjustable stroke, for actuating valves of internal combustion engines is provided, which can be arranged in cylinder heads having usual dimensions, next to the valve activation mechanisms, in advantageous manner. The element that is changeable in its angle position is provided with a guide toggle coupled in fixed rotational manner, which is in engagement with an actuating shaft arranged adjacent to it, guided in the cylinder head in displaceable manner. This actuating slide has an actuating bridge in the region of the actuating path, with which contact surfaces of the actuating lever are engaged on one or both sides. The actuating slide is coupled with an actuating motor, which effects the axial actuating movements of the actuating slide counter to the forces introduced by the actuating lever. It is advantageous if the actuating slide is arranged on the side of the cylinder head opposite the camshaft, and thereby fits advantageously into the usual design of cylinder heads.

Actuating drives for valve drives having a variably adjustable stroke, for valves of internal combustion engines

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Chemnitz, Germany

Roger Budde