Abstract: A motor vehicle includes an acoustic device configured to generate and capture acoustic waves, the acoustic device includes a vehicle part having a vibration region, and an actuator arranged thereon and configured to for excitation and detection of vibrations of the vehicle part in the vibration region, wherein the region is modified compared to an adjacent region of the vehicle part and has greater sensitivity to excitations in the frequency range of the acoustic wave.

Abstract: A process for the model-supported simulation of the coolant temperature in the case of a vehicle is provided. Conventionally, two temperature sensors are used for determining the coolant temperature, in which case one exists only for determining the temperature when an engine is switched off. Such an additional sensor is cost-intensive and should be avoided. The process avoids using an additional sensor by detecting the coolant temperature at the point in time of the switching-off of the driving engine. A current coolant temperature is continuously calculated while including vehicle-specific data using a temperature model. As an alternative, the current coolant temperature is not continuously calculated, but rather is calculated from a point in time as of which a theoretically determined coolant temperature falls below a specific value.

Abstract: A process correctly senses an outside temperature. In the case of vehicles, outside temperature sensors are conventionally provided which falsify measuring results due to environmental and outside influences. For example, the engine temperature heats the temperature sensor to a different degree according to the driving speed, the driving situation and condition or, shortly after the switch-off. The process correctly senses an outside temperature, by which a signal can be formed which corresponds to the actual value of the outside temperature. The outside temperature is sensed by a temperature sensor arranged in a vehicle. A corresponding temperature signal is generated. The vehicle operating and/or vehicle condition requirements are sensed. Correction values are determined as a function of the vehicle operating and/or vehicle condition requirements. Finally, the temperature signal emitted by the temperature sensor is changed corresponding to these correction values.