Abstract: The invention relates to a refrigerant circuit (1), in particular for use in a vehicle, preferably a motor vehicle, comprising: an air conditioning compressor (2), a main condenser (4), at least one connectable condenser (5), and a switching means (3) which is designed to connect one or more of the switchable condensers (5) to the refrigerant circuit (1), wherein a pressure equalising means (6) is configured to equalise an internal pressure of the at least one connectable condenser (5) with an internal pressure of the main condenser (4).

Abstract: The invention relates to a control device (1) and to a control method for noise reduction for a vehicle. The control device comprises the following: at least one supported auxiliary assembly for the vehicle, for example an air conditioning system (4) having an air conditioning compressor (40), an electrical accumulator (60) or a range extender (70), wherein the auxiliary assembly emits vibrations in operation; at least one vibration sensor (21a) for detecting vibrations; at least one controllable vibration actuator (22a) for generating vibrations and a control unit (10), which is connected to the vibration sensor and the vibration actuator or the vibration damper, wherein the control unit (10) is designed, based upon the detected vibrations, to generate control signals for transmission to the vibration actuator or the vibration damper (45, 52, 71, 81), which result in the vibrations emitted by the auxiliary assembly being reduced and/or masked in a vehicle interior (3).

Abstract: posed is a blower (10) for a motor vehicle, in particular a blower (10) for a heating and air conditioning unit and/or an engine of a motor vehicle, comprising:—a compressed air generator (14) for generating compressed air and—a sheath flow nozzle (12) for discharging the compressed air in the form of a sheath flow (34, 34a, 34b, 34c) by means of which feed air (32), in particular feed air conducted to the sheath flow nozzle (12) via a feed air supply (20), is entrained in the form of a central flow (36, 36a, 36b, 36c).

Abstract: There is proposed a test wheel arrangement (1) for testing a motor vehicle while the tires are stationary, which test wheel arrangement (1) has a shaft section (5) which can be attached to a wheel hub (7) of a motor vehicle and on which a test wheel (3) is mounted to be freely rotatable.

Abstract: There is proposed a test wheel arrangement (1) for testing a motor vehicle while the tyres are stationary, which test wheel arrangement (1) has a shaft section (5) which can be attached to a wheel hub (7) of a motor vehicle and on which a test wheel (3) is mounted to be freely rotatable.

Abstract: This invention involves an internal combustion engine for a motor vehicle with a lubricant pump to transport a fluid, almost incompressible lubricant, especially a motor oil, as well as a lubricant guide element (1b) to guide the lubricant to the lubrication points of the internal combustion engine. In the internal combustion engine of the invention an elastic, flexible dampening element (2b) to accept pressure pulsations in the lubricant is associated with the lubricant guide element (1b). A dampening element (2b), for example, can have a bypass resonator with a calmed lubricant reservoir (4b). Use, for example, is in passenger motor vehicles.

Abstract: A method and apparatus for the determination of a stationary and/or moving object, such as a vehicle, acoustic signals emitted by the object and/or reflected by another object are recorded and used to evaluate or identify an object. The object is detected, evaluated and identified acoustically with the aid of noises from it and/or extraneous noises, with respect to its own movement profile in relation to one or more coordinate axes (x, y axes), in the manner of a self-localization based on sound waves.

Abstract: In order to improve a noise emission or noise emission which is caused by a vehicle, according to the invention the instantaneous load (L) of the vehicle (F) is determined with a method for controlling and/or regulating a load (L) of a vehicle (F) by means of a pickup unit (6, 6A to 6C) with reference to at least one operating variable (B) of the vehicle (F), the operating variable (B) being controlled and/or regulated by means of a control unit or regulator unit (2) as a function of a noise level (G(G), G(F), G(U)) resulting from the instantaneous load (L) of the vehicle (F).

Abstract: For a reliable identification of noise sources generating noise or sound signals, according to the invention, in a method for determining a noise signal (S) of a noise source (10), the noise signal (S) is detected and analyzed on the basis of signal properties, the noise signal (S) being compared with noise patterns (M) and being assigned to a noise source type (T) on the basis of the comparison.

Abstract: A method and apparatus for the determination of a stationary and/or moving object, such as a vehicle, acoustic signals emitted by the object and/or reflected by another object are recorded and used to evaluate or identify an object. The object is detected, evaluated and identified acoustically with the aid of noises from it and/or extraneous noises, with respect to its own movement profile in relation to one or more coordinate axes (x, y axes), in the manner of a self-localization based on sound waves.

Abstract: In order to model an environment as naturally and realistically as possible, a method and an apparatus according to the invention allow the environment to be determined as perceived by a person, that is to say largely covering all of the sensory organs. In this case, the apparatus is in the form of a multisensor integrated measurement system which is used for simultaneous recording, in a manner typical of a person, of measurement signals, such as acoustic and optical signals, light radiation signals, heat signals and smell signals, and to reproduce them authentically.

Abstract: For locating, identifying and classifying noise sources inside and outside spaces, the invention provides a method for processing noise signals of a noise source, in which a plurality of noise signals (SQ1 to SQ4) are detected in a location-related manner and examined by means of a sound analysis on the basis of signal features in such a way that parameters underlying the noise source (G1 to G4) are determined.

Abstract: In order to improve a noise emission or noise emission which is caused by a vehicle, according to the invention the instantaneous load (L) of the vehicle (F) is determined with a method for controlling and/or regulating a load (L) of a vehicle (F) by means of a pickup unit (6, 6A to 6C) with reference to at least one operating variable (B) of the vehicle (F), the operating variable (B) being controlled and/or regulated by means of a control unit or regulator unit (2) as a function of a noise level (G(G), G(F), G(U)) resulting from the instantaneous load (L) of the vehicle (F).