Siemens Aktiengesellschaft

Continental Automotive Gmbh

Conti Temic Microelectronic Gmbh

Wolfgang Ludwig

Hong Zhang

Wolfgang Mai

Matthias Wiese

Corinna Pfleger

Oliver Grunwald

Jens Pache

Wolfgang Krostewitz

Rainer Hild

Timo Heider

Lukas Kluba

An electric bicycle has an electric motor and an electric energy store for supplying energy to the electric motor. Accordingly, the bicycle has a first controller coupled to the electric motor and is configured to store a first keycode. The bicycle has a second controller coupled to the energy store and is configured to store a second keycode. The controllers are connected or can be connected to a data transmission system, which is a bus. The first and second controllers are configured such that at least one specified controller of the controllers receives the keycode of the other controller. The specified controller is configured to determine whether its keycode matches the received keycode of the other controller using specified criteria. An immobilizer for an electric bicycle can be formed from these components.

Electric bicycle, immobilizer for an electric bicycle and method for operating an electric bicycle

The invention relates to a method for regulating a fuel tank venting valve of a motor vehicle during leak testing of a fuel tank venting system where the fuel tank venting valve is arranged in a recovery line that connects a retention vessel to catch fuel vapors from a fuel tank to an inlet manifold of an operating internal combustion engine, comprising sealing the tank venting system from the atmosphere outside the motor vehicle, opening the fuel tank venting valve to expose the fuel tank and the tank venting system to a relative negative pressure present in the inlet manifold of the operating internal combustion engine and regulating the degree of opening of the tank venting valve based upon the external pressure, p.

Method for the activation of a tank venting valve of a motor vehicle during a leak test

In a method for improving the running smoothness of an internal combustion engine () which has at least one combustion chamber and at least one controllable actuator whose position has an influence on the combustion in the at least one combustion chamber, an irregular running value (f) of the internal combustion engine () is determined and compared with a predefined first irregular running limit value (fthres), and in the event of the irregular running value (f) exceeding a predefined first irregular running limit value (fthres), the actuator is moved from a starting position into an end position while the combustion in all of the combustion chambers of the internal combustion engine () is continued.

Method for improving the running smoothness of an internal combustion engine, control device and internal combustion engine

There is described a method for determination of an application time for a tank ventilation on an internal combustion engine. An excessive enrichment of the air/fuel mixture can be avoided by means of a timely application of injection correction as result of the tank ventilation. According to said method, a threshold value comparison is carried out for a modified lambda control deviation, made up of the lambda control deviation and a pseudo lambda control deviation, whereby the pseudo lambda control deviation depends on the deviation of the lambda values from a given lambda set value.

Method for control of a tank ventilation

For the purposes of a determination of a fuel vapor loading level of a fuel vapor retention system of a combustion engine, an opening level of a valve of the fuel vapor retention system is increased in steps or continuously during a determination phase. Furthermore, the valve is activated at most a predefined first period prior to a start of the determination phase by a conditioning pulse at least whenever the valve was closed previously for a second period that is longer than a predefined threshold value. The conditioning pulse is generated in such a way that the valve definitely opens at most for a predefined opening period and then closes again.

Method and device for activating a valve of a fuel vapor retention system

The invention relates to an operating method for a regeneration valve of a fuel vapor retention system, particularly of a tank vent valve for regenerating an activated carbon filter during which the regeneration valve is controlled by a control signal, whereby the control signal corresponds to a designated valve position of the regeneration valve. The invention provides that the correlation between the control signal and the resulting valve position of the regeneration valve is determined during a calibration process.

Method for controlling a regeneration valve of a fuel vapor retention system

Method for the testing of the exhaust gas recirculation system of an internal combustion engine that returns exhaust gas at an exhaust gas recirculation rate from the exhaust line to the intake line, in which a specific adjustment of the exhaust gas recirculation rate is set, the NOx concentration in the exhaust gas is measured and in the absence of a differential concentration varying as a function of the adjustment of the exhaust gas recirculation rate, a defect of the exhaust gas recirculation system is diagnosed.

Method for the testing of an exhaust gas recirculation system

Values for a raw NOx concentration of an internal combustion engine, that are stored on an operating point basis, are read out from a characteristic map and an adaptation of variations in concentration takes place on the basis of an output signal of an NOx sensor provided downstream of a NOx storage catalyst, either by modification of a reduction factor, which serves for the calculation of a corrected raw NOx concentration from the raw NOx concentration, or by direct correction of the values read out from the characteristic map for the raw NOx concentration with a raw concentration correction factor.

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Butzbach-Maibach, Germany

Wolfgang Ludwig