Luk Getriebe-systeme Gmbh

Daimler Chrysler Ag

Luk Lamellen Und Kupplungsbau Beteiligungs Kg

Daimler-benz Ag

Luk Lamellen Und Kupplungsbau Gmbh

Mercedes-benz Aktiengesellschaft

Luk Getriebe Gmbh

Michael Salecker

Martin Zimmermann

Franz Kosik

Michael Reuschel

Thomas Grass

Uwe Wagner

Jochen Stinus

Alfons Wagner

Martin Rauser

Wolfgang Eismann

Bruno Muller

Martin Vornehm

Thomas J&auml;ger

Klaus Kupper

Oliver Amendt

Oswald Friedmann

Gunter Worner

Robert Fischer

Klaus Henneberger

Holger Stork

Ernst Tscheplak

Georg Schneider

Klaus K&uuml;pper

Bernhard Boll

Dittmar Wieland

Markus Heinzel

Georg Hommes

Bruno M&uuml;ller

J&uuml;rgen Eich

Thilo Reichel

Jens Schn&auml;bele

Burkhard Kremmling

Friedo Tinschert

Bernd Koch

Gunter J&uuml;rgens

Claudio Castro

Gunter Jurgens

Martin Grillenberger

Burkard Kremmling

A method for changing gear in an automated change-speed gearbox of a motor vehicle with an automated clutch arranged between an engine and the change-speed gearbox includes engaging the clutch up to a slip limit during a downshift from an original gear to a target gear to increase the rotational speed of an input shaft of the change-speed gearbox.

Automated change-speed gearbox and methods for changing gear in such a gearbox

The invention relates to a motor vehicle comprising at least one device for preventing unintentional movements.

Hill holder device for a motor vehicle

A motor vehicle wherein the combustion engine normally transmits torque to the wheels by way of an infinitely variable ratio transmission but receives torque from the wheels when the vehicle is coasting. The operator of the vehicle can manipulate one or more components (e.g., the gas pedal) of an actuating unit which includes one or more sensors arranged to monitor one or more parameters of the vehicle, and the ratio of the transmission is automatically regulated&mdash;at least temporarily&mdash;when the vehicle is coasting so that the speed of the coasting vehicle does not increase but decreases or remains unchanged. For example, one sensor can monitor the speed of the motor vehicle and another sensor can ascertain whether or not the gas pedal is depressed.

Motor vehicle

Method of operating a motor vehicle, and motor vehicle equipped to perform the method

A vehicle including a device for determining vehicle operational data and for determining distance traveled by the vehicle. A memory is provided for storing the operational data together with the distance traveled as paired values for subsequent diagnostic and maintenance purposes. Signals representative of engine rotational speed, transmission input rotational speed, and torque transmitted by the clutch are sensed for determining clutch performance loss values, and the performance loss values are stored in the memory as paired values along with the vehicle distance traveled.

Vehicle with memory for storing paired values, consisting of first data and the run distance

The present invention presents a method for operating a motor vehicle which has at least one clutch device. The method includes determining at least one part of a dependence of a path of at least one clutch characteristic on at least one pressure value. The pressure value relates to a pressure of a hydraulic fluid at a predetermined site. According to one embodiment of the present invention, the hydraulic pressure is detected in an area of a torque sensor which produces the hydraulic pressure dependent on a size (magnitude) of an engine torque.

A motor vehicle ( ) has an engine ( ), a clutch ( ), and a transmission ( ) with a shift lever ( ). A sensor ( ) arranged at the shift lever ( ) detects movements of the shift lever or forces applied to the shift lever. When the sensor ( ) detects a movement or force, the activity is interpreted as a signal that the driver intends to shift gear. A detector system of the motor vehicle detects conditions such as the presence and magnitude of a mechanical play which can affect the process of shifting gears in the transmission ( ).

Motor vehicle with a device that recognizes an intention to shift gear

A method of monitoring a torque transmission system with a manually switchable gearbox in the power train of a motor vehicle involves the utilization of at least one sensor unit at the input side of the torque transmission system to ascertain relevant positions of the shift lever of the gearbox and the driving torque of the engine of the motor vehicle. The thus obtained shift lever signals are memorized, together with comparison signals which are obtained as a result of filtering of the shift lever signals, and various characteristics of such signals are recognized and identified to indicate the intention of the operator of the vehicle regarding the switching of the gearbox. The thus obtained switching intention signals are transmitted to a controlled clutch operating system.

Method for regulating the transmission of torque in power trains

A clutch between the combustion engine and the manual multiple-gear-ratio transmission in the power train of a motor vehicle is disengaged or otherwise adjusted in response to a signal from a control unit which processes signals transmitted by sensors serving to monitor the positions and/or the extent of movements of one or more mobile components of the manual transmission. A signal to disengage or to otherwise adjust the clutch is generated when the monitored position(s) of and/or the magnitude(s) of force(s) acting upon one or more mobile components indicate that the operator of the motor vehicle intends to shift the transmission into or from a selected gear ratio.

Method of and apparatus for actuating an adjustable torque transmitting system in the power train of a motor vehicle

A method for influencing a shift process connected with a change in transmission ratio when driving a motor vehicle that has a set of driven wheels subject to longitudinal and transverse forces, the method including detecting whether or not the vehicle is traveling around a curve and, if doing so when the shift process is in progress, influencing the shift process so as to decrease the longitudinal forces that act on the driven wheels as a result of the shift process. Also disclosed is an apparatus for performing the disclosed method including a detector for detecting whether or not the vehicle is traveling around a curve and a transmission ratio shifter responsive to the detector that, if the vehicle is traveling around a curve when the shift process is in progress, performs the shift process so as to decrease the longitudinal forces that act on the driven wheels as a result of the shift process.

Method of and apparatus for influencing the shifting of transmissions in the power trains of motor vehicles

A twin clutch has two clutch discs, each arranged on one of two coaxial shafts, having a clutch cage, which surrounds the clutch discs in the manner of an annulus, and having pressure plates which are held in a rotationally fixed manner therein and are arranged axially in such a way that they can be displaced separately axially between the clutch discs and can be pressed against the clutch discs by a diaphragm-spring arrangement arranged axially between them and can be disengaged from the respective clutch disc by means of separate release members. The diaphragm-spring arrangement includes at least two diaphragm springs of essentially the same type arranged in series, giving a broad actuating range with a constant spring force. When the release members are unactuated, the diaphragm-spring arrangement operates in this actuating range irrespective of clutch wear, it being possible to transmit approximately half of a maximum torque to be transmitted at each clutch.

Twin clutch for motor-vehicle gearboxes

A motor vehicle is equipped with a device for automatically actuating a clutch in the drive train. A clutch actuator is directed by a control unit which, in turn, is responsive to a control signal from an electronic stability system (ESS). When the control signal indicates that the electronic stability system is in action, the actuator will set the degree of clutch engagement or the amount of torque that the clutch will transmit.

Motor vehicle with an automatically actuated clutch

An electronic control unit for an automated transmission and/or an automated clutch in the power train of a motor vehicle is connected with one or more sensors denoting one or more activities by the operator of the vehicle. The control unit can become operative in response to a signal denoting the actuation of a brake and/or in response to a signal denoting that the ignition system of the vehicle has been operated to start the engine.

Power train with automated transmission

The power train of a motor vehicle has an automated clutch and a control unit which causes one or more actuators to change the rate of torque transmission by the clutch from the engine to the transmission of the power train in response to appropriate signals from various sensors. When the transmission is shifted into gear while the engine is idling, while the brake or brakes are not applied and while the gas pedal is not depressed, the setting of the clutch is such that the transmission causes the motor vehicle to carry out a crawling movement as a result of a change of the rate of torque transmission by the clutch from the idling engine to the transmission from a first value (e.g., zero) to a second value as a function of the monitored temperature of the clutch.

Apparatus and method for controlling creep torque in a power train of a

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Buhl, Germany

Michael Salecker