Robert Boschgmbh

Klaus Ries-Mueller

Michael Baeuerle

Joachim Luh

Axel Heinstein

Manfred Mezger

Andreas Blumenstock

Werner Hess

Udo Sieber

Alexander Schenck Zu Schweinsberg

Ernst Wild

Manfred Vogel

Detlef Nowak

Uwe Kassner

Martin Scheffel

Peter Feuerstack

Andrea Lohmann

Werner Harter

Peter Dominke

Chi-Thuan Cao

Christian Koehler

Helmut Suelzle

Walter Kohl

Jochen Fassnacht

Michael Lehner

Karl-Heinz Senger

Peter Ahner

Peter Baeuerle

Alfred Kratt

Andreas Glaser

Stefan Lauter

Burkhard Hiller

Axel Storch

Markus Klausner

Bernd Eckert

Gernot Wuerfel

Peter Blessing

Ngoc-Thach Nguyen

Guido Pilgram

Wolfgang Grimm

Helmut Janetzke

Matthias Kuesell

Rainer Frank

Wolfgang Wagner

Thorsten Allgeier

Herbert Lohner

Peter-Jurgen Schmidt

Wolfgang Pfeiffer

Roland Norden

Robert Koehler

Bernd Müller

Walter Gollin

Corren Heimgaertner

Hans-Peter Groeter

Achim Schreiber

Gerard Melchior

Arnd-Matthias Langner

David Moessner

Oliver Tschismar

Frank Seidel

Heiko Oertel

Bo Yuan

Markus Paeulgen

Elmar Dilger

Norbert Dressler

Thomas Sauer

Klaus-Peter Gansert

Roman Grzeszik

Jens Botte

Detlev Nowak

Paulo Ricardo

Rocco Scholz

Reinhard Von Haeften

Gisbert Krauter

Bernard Mencher

The invention relates to a method for ascertaining the backlash () of a gear () which is coupled to an electric machine () of a vehicle which has at least one electric machine (). According to the method, at least the following steps are carried out: a) detecting the rotational speed of the at least one electric machine () during a driving intervention () and detecting rotational speed fluctuations produced therefrom, b) evaluating a high-frequency vibration () which is generated as a result of the gear () reaching a lower stop () in delay phases () and reaching an upper stop () when reversing the rotational direction in acceleration phases (), c) filtering out high-frequency components from the high-frequency vibration () according to step b), wherein position information (), relating to a corresponding rotational angle, from the rotational speed signal is saved in the event said components occur, and d) evaluating the distance between the upper stop () and the lower stop () and ascertaining the backlash () from the difference of the position information () between the upper stop () and the lower stop ().

Method for determining the transmission backlash of a transmission

The present invention relates to an axle drive for a vehicle, said axle drive comprising at least one electrical machine, at least one power electronics system and at least one transmission, which are arranged in a housing, a first housing partition being situated between the at least one electrical machine and the at least one power electronics system. A further second housing partition is situated between the at least one electrical machine and the at least one transmission. The first housing partition consists of a first material, and/or the second housing partition consists of a second material.

Electrical axle drive for a vehicle

The present invention discloses a method for controlling an electric machine, having an encoder wheel which has a multiplicity of teeth and at least one reference marking, having the steps: detecting the dynamics of the electric machine, detecting the positions of the teeth on the encoder wheel in relation to the at least one reference marking if the electric machine exhibits low dynamics, calculating a rotational speed of the electric machine on the basis of at least the detected positions, and controlling the electric machine on the basis of at least the calculated rotational speed. Furthermore, the present invention discloses a drivetrain and a vehicle.

Method, drive system and vehicle

A method for heating engine and/or transmission oil of a hybrid vehicle having an internal combustion engine and an electric motor, the engine and/or transmission oil being heated with the aid of the waste heat of a charging device for at least one battery and/or the waste heat of the at least one battery.

Method and device for heating engine and transmission oil of a hybrid vehicle

An internal combustion engine has at least one combustion chamber which may be closed by an intake valve, at least one air intake port which leads to the intake valve, and a fuel injection device which in association with the at least one combustion chamber has a first injector and a second injector for the metered injection of fuel into at least one intake port. To achieve significantly improved mixture preparation and combustion of the fuel-air mixture in the combustion chamber, the two injectors are configured such that the first injector injects a widely divergent spray cone having a large cone angle, and the second injector injects an only slightly divergent spray cone having a much smaller cone angle.

Internal combustion engine

In an automotive drive, at least one dynamic characteristic of a bearing by which the automotive drive is supported on a beam is selectively influenced during operation of the automotive drive (active bearing). It is provided that a change in an instantaneous operating variable of the automotive drive is determined from a change in a state variable of the active bearing that influences its dynamic characteristic.

Method for operating an automotive drive

The invention concerns a method to determine the composition of a fuel mixture from a first and at least a second fuel for the operation of an internal combustion engine with at least one combustion chamber, wherein the first and the second fuel have different boiling points and/or different enthalpies of evaporation. Provision is thereby made for the composition of the fuel mixture to be ascertained from the pressure in the combustion chamber and/or a parameter associated with the pressure and/or the time history of the pressure and/or the time history of a parameter associated with the pressure during and/or after an injection of fuel during a compression phase of the fuel-air mixture. An advantage of the method according to the invention is that when initially starting the engine after filling the tank (fueling), the fuel mixture ratio, which resulted from the filling of the tank (fueling), can already hereby be determined.

Method to determine the composition of a fuel mixture

The invention relates to a heating and/or cooling system () for a motor vehicle with a combustion engine () and a catalytic converter () arranged in the exhaust gas path () of the combustion engine (), comprising a burner () attached before the catalytic converter () to the exhaust gas path () as well as a heat exchanger () for transmitting heat generated in the burner () to a heating and/or cooling circuit () of the motor vehicle. It is proposed that the heat exchanger () be arranged behind the catalytic converter () in the exhaust gas path () of the combustion engine () and can be acted upon through the catalytic converter () with hot combustion gases from the burner ().

Heating and/or cooling system for a motor vehicle

A method for operating an internal combustion engine and a device for implementing the method, in which a diagnosis is performed of an adjusting device situated in the exhaust duct of the internal combustion engine, which distributes the exhaust gas between a first and at least one second exhaust gas path. A transit time from a change of a characteristic quantity of the exhaust gas in front of the adjusting device until the appearance behind the adjusting device detected by a sensor is compared to a specified transit time threshold value. The transit time threshold value is specified as a function of a setpoint position of the adjusting device. In the event of a deviation from or exceedance of the threshold value, a fault signal is provided.

Method for operating an internal combustion engine and device for implementing the method

An ignition system for an internal combustion engine, having a combustion chamber and a fuel injection device which injects a fuel directly into the combustion chamber in stream-guided fashion, is configured so that the ignition system has a positive polarity.

Ignition system for an internal combustion engine

A method for operating an internal combustion engine by introducing air, in which the air is conducted into the induction region of the internal combustion engine following shutoff of the internal combustion engine. If necessary, the intake valves and the exhaust valves of at least one cylinder are moved into a position in which at least one intake valve and one exhaust valve of a combustion chamber of the internal combustion engine are open simultaneously. The method may be used in for an internal combustion engine having an electric turbocharger for the introduction of air.

Method and device for operating an internal combustion engine

The invention relates to a system for inputting a motor torque and a transmission ratio in a vehicle having a continuously variable transmission () with means () for determining a desired motor torque () while considering a signal representing a driver command; means () for determining a desired transmission ratio () while considering a signal representing a driver command; and, means () for determining the signal representing the driver command. The signal, which represents the driver command, is a relative driver accelerative force command ('). The invention further relates to a method for inputting a motor torque and a transmission ratio in a vehicle.

System and method for the setting of an engine torque and a gearbox ratio in a vehicle with a continuously variable gearbox

The present invention relates to a method for detecting a slip (s) of a belt part of a belt transmission, especially of a CVT transmission, having a transmission rpm ratio (ji). According to the invention, a slip of the belt part is detected by evaluating the change of the transmission rpm ratio (ji).

Method and system for identifying the degree of a slip of a belt part of a belt transmission

A method and a device for starting an engine system, especially of a vehicle, which make possible a start of the engine system that is as quick and comfortable as possible. In this context, it is tested for a start request whether a starter-free starting method leads to a successful start of the engine system. For the case in which the test result is negative, the engine system is started automatically using a starter.

Method and device for starting an internal combustion engine

In a method for operating an internal combustion engine of a motor vehicle, in particular, pressurized fuel is conveyed to a fuel accumulator. The fuel is injected into a combustion chamber via a fuel injector. Coking of the fuel injector is determined. A first fuel-pressure increase is implemented when the coking exceeds a threshold value.

Method for operating an internal combustion engine of a motor vehicle in particular

Growing community of inventors

Bad Rappenau, Germany

Klaus Ries-Mueller