Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Porsche

Peter Meffert

Heinrich Schwarz

Edmund Sander

Peter Hoebel

Falk Heilfort

Jürgen Patzer

Juergen Patzer

A spur gear for transmitting a drive torque in a toothing of a motor vehicle transmission is provided, having a helically toothed first gear body for forming first teeth, a second gear body, which is helically toothed oppositely to the first gear body so as to form a herringbone toothing, for forming second teeth, wherein, on axial sides which face toward one another of the first gear body and of the second gear body, the first teeth and the second teeth point toward one another, so as to at least partially overlap one another, in each case pairwise, wherein, on that axial side of the first gear body which points toward the second gear body, a first tooth flank of the first tooth points in an axial direction toward a second tooth flank of a second tooth which follows the opposite second tooth in a circumferential direction.

Spur gear

A differential for the axle drive of a motor vehicle, having a differential case which carries a driving wheel, is disposed in a transmission case and in which an axle bolt is disposed which carries differential gears, the differential gears meshing which axle shaft gears arranged on axle drive shafts. These gears are constructed as bevel gears. It is suggested that a first joint flange carrying a first axle shaft gear is connected by way of a connecting rod with a second joint flange carrying a second axle shaft gear, the connecting rod being guided through an opening arranged in the axle bolt. By way of the connecting rod, the two joint flanges are connected with one another in the radial direction, so that their bearing is improved.

Differential for the axle drive of a motor vehicle and method of making same

A differential for the axle drive of a motor vehicle has a cage in the interior of which the axle shaft gears are guided and on which they are supported. For absorbing the forces acting in the direction of the axle drive shafts, the cage is made of a tube section and has at least two diametrical bores for the receiving and leadthrough of the axle drive shafts. As a result, the differential can be manufactured with a reduced weight and lower cost while having a high stiffness.

Differential cage for absorbing shock mounted in a differential casing

A differential for the axle drive of a motor vehicle has a differential case which is made of thin-walled metal sheets and which is freed of forces caused by the bevelled gearing of the differential bevel gears and axle shaft gears. The axle shaft gears are disposed in a separate cage which absorbs the forces acting in the direction of the axle drive shafts, and the forces acting in the direction of the axle bolt are supported, for example, directly in the ring gear. As a result, the differential can be manufactured with a high stiffness while its weight and costs are reduced.

Differential for the axle drive of a motor vehicle

A shifting arrangement of an overdrive position of a fourth gear is connected behind a shifting arrangement of a Simpson gear set of a first gear and/or a second gear. The connection transforms a conventional four-speed automatic transmission into a five-speed automatic transmission or a six-speed automatic transmission.

Motor vehicle automatic transmission

In the drive line of a motor vehicle, a planetary transmission is arranged as four-wheel locking system, a braking device acting upon the planet carrier of this planetary transmission. The planetary transmission includes an input sun gear, an output sun gear disposed coaxially next to it, and planet wheels mating simultaneously with both sun gears. In order to keep friction losses low and avoid a self-locking in the planetary transmission, the real pitch module of all gear wheels is as small as possible and proportional to the driving torque to be transmitted, and the operational pressure angle is as large as possible.

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Tiefenbronn, Germany

Peter Meffert