Abstract: The invention relates to a hand-held transmitter for the remote control of various vehicle systems with integrated normal key. A housing has electronics and the normal key connected to the said housing, and a sensor system which detects positions or movements of the normal key. Here, a code for the remote-controlled actuation of at least the lock system of the vehicle is emitted as a function of the signals of the sensor system.

Abstract: A Drive-slip control device for motor vehicles in which, when a driven vehicle wheel spins, this wheel is braked and wherein when both driven wheels spin, the engine power is additionally reduced. Spinning of the drive wheels is recognized by means of rotational-speed sensors and an electronic system and when a spin signal is present on account of a differential-speed threshold value between driven and non-driven vehicle axles being exceeded, the power of the engine is reduced in a controlled manner by the electronic system during the duration of the spin signal by means of a final control element. When the spin signal stops, the power of the engine is increased again in a controlled manner to the target value predetermined by the driver by means of the accelerator.

Abstract: A wheel slip control system for motor vehicles is provided wherein when a given driven vehicle wheel spins this vehicle wheel is braked, and wherein when both driven wheels spin, the engine power is reduced. A spinning of the driving wheels is obtained by means of rotational speed sensors and a signal is fed to an electronic control unit. When a slip signal is present as a result of the exceeding of a differential speed threshold value between the driven and the non-driven vehicle axle, the engine power is controlled downward by the electronic control unit during the duration of the spin signal by means of a control element. When the slip signal drops, the engine power is again controlled upward to the desired gas pedal value set by the driver.

Abstract: An installation for the indication of the fuel consumption, especially of heavy truck engines, with a sensor for the position of the drive pedal and with a set of fuel consumption-engine rotational speed-characteristic curves stored in a storage device and dependent on the drive pedal position; a predetermined number of at least single-color light diodes, of which each is coordinated to a predetermined partial range of engine rotational speed and indicates an information about the specific fuel consumption as a function of the instantaneous control rack, respectively, throttle valve position coordinated to the drive pedal position within the engine rotational speed partial range corresponding to the stored set of fuel consumption-engine rotational speed curves, are integrated into the dial of a tachometer corresponding to their coordination to the predetermined engine rotational speed partial ranges.