Daimler Chrysler Ag

G&uuml;nter W&ouml;rner

Ralf Sperber

Ernst Tscheplak

Roland Flinspach

Markus Heinzel

Martin Stengel

Andreas Kollmann

Hartmut G&ouml;sele

Wolfgang Niechoj

Stefan Weniger

Ulrich Eckle

Rolf Schr&ouml;der

Friedrich Duckeck

J&uuml;rgen Henkel

Olaf Rindfleisch

Peter M&uuml;nich

Bernd Davids

Ralph Ebersp&auml;cher

In a method for operating a motor vehicle having an automatic transmission in the time of a selection action for a driving-mode range, first a driver's requirement for a change in the driving-mode range is transferred to a selection device, a change signal is then generated by the selection device, the change signal is subsequently transferred to a control unit, and, finally, a change in the driving-mode range of the automatic transmission is brought about by the control unit according to the change signal. In the time of the selection action for the driving-mode range, at least one braking device is actuated in an automated manner by the or a control unit. Drive-train oscillations may be reduced or avoided by the method.

Method for operating a motor vehicle having an automatic transmission with improved comfort

In an arrangement of a running roller on a coupling journal of a coupling half of a moveable shaft coupling, a radial rolling bearing, the inner ring of which is connected to the coupling journal by a ball joint, is inserted into the running roller. In order to maintain an additional degree of freedom for the relative movements of the coupling journal in relation to the complementary coupling half in the directions perpendicular to the central axis of the latter, either the running face of the running roller is configured cylindrically or the rolling bearing is configured as a loose bearing.

Arrangement of a running roller on a coupling journal of a moveable shaft coupling

In a change-speed gearbox with gear wheel clutches without synchronizing elements, a synchronizing gear mechanism is provided to accelerate or decelerate the input shaft to the respective synchronous speed of the new gear.

Gearbox with gear synchronizing device

A selector device for a change-speed gearbox. The selector device includes a remote selector rod for selecting the gears, a flexible-actuating linkage for changing over between the gears, and a coupling linkage for accepting reaction forces which are provided between the change-speed gearbox and a manual selector lever and its bearing arrangement.

Shifting device for a manual gear transmission

A gear-shift device for a change-speed gearbox, includes a shift actuator, a selection actuator, an actuator which is arranged such that it can be displaced exclusively axially with regard to a housing, an auxiliary transmission for converting a rotary motion into a reciprocating motion, a brake which is connected to the selection actuator and an engageable and disengageable locking device. These components are arranged in terms of their action in such a manner that two of the three actuators are arranged fixed in terms of movement with respect to one another and are connected to the third actuator by the auxiliary transmission. The selection actuator is fixed either in a rotationally fixed or axially undisplaceable manner with regard to the housing. A fixed slotted shift guide can be provided singly or together with a slotted change-interlock guide for the shift actuator, with the guide plate being used as a brake and locking device.

Control device for a variable speed gear

A selection system for an automatic motor vehicle transmission has a manual selector element which is locked or released by an oblique locking surface as a function of operating conditions. The oblique locking surface divides the manual forces of the selector element into a force component directed in the operating direction of the selector element and into a force component directed transversely thereto. Only this transversely directed force component can act upon additional locking surfaces if their surfaces have not yet been disengaged by an actuator arrangement before a manual operating force is exercised on the selector element.

Selection system for an automatic motor vehicle transmission

In a variable-ratio gear transmission, an input shaft is connected to output shaft by two partial transmissions each having an intermediate shaft, and the intermediate shafts are connected to the input shaft each by a powershift clutch. The intermediate shafts are connected for their part to a common countershaft by gear stages that are each associated to one gear, the countershaft being connected to the output shaft by a gear constant. In order to make possible a multiplicity of double shifts while skipping gears, the partial transmissions each have associated to them an auxiliary gear stage, whose gear ratio is equal to the gear ratio of a gear stage belonging, in each case, to the other partial transmission. The auxiliary gear stages are combined into one single gear stage through the mediation of an auxiliary countershaft, so that a main shaft gearwheel, connected by two gear-type clutches to the two intermediate shafts, engages with two idlers mounted, in each case, on one of the countershafts.

Variable-ratio gear transmission having two partial transmissions each having a powershift clutch

Toothed gear transmission having two partial transmissions disposed parallel to each other in the power flow

A toothed gear transmission is described, in which an input shaft is connected to a differential by a first and a second partial transmission, which are disposed parallel to each other in the power flow and which both have a frictionally engaged load shifting clutch and an intermediate shaft. The elements are disposed concentrically to each other and coaxially to the input shaft, and each intermediate shaft can be effectively connected to the input shaft through the load shifting clutch. At least one toothed gear for each intermediate shaft is provided, of which at least one can be effectively connected to a first driven shaft disposed parallel to the intermediate shafts, which directly or indirectly outputs to the differential gear.

Growing community of inventors

Kernen, Germany

Günter Wörner

Growing community of inventors

Kernen, Germany

G&uuml;nter W&ouml;rner

Günter Wörner