The invention relates to a device for operating an air conditioning system (12) of a vehicle. The air conditioning system has a fan, a plurality of actuating motors for controlling flaps on and/or in air-conducting channels, a heating and/or a cooling unit, and a plurality of sensors (28, 30) for sensing measurement variables required for the operation of the heating, ventilation and/or air conditioning system. The sensors (28, 30) include an interior temperature sensor (26). The device has an operating and control unit (32) for inputting a desired temperature and for outputting air conditioning control signals for the control of components of the air conditioning system. The device also has a processing unit (40), which is arranged outside of and/or separate from the operating and control unit (32) and to which measurement signals from the interior temperature sensor (26) and from at least some of the other sensors (28, 30) of the air conditioning system can be supplied and which processes said measurement signals further to form air conditioning control signals.

A temperature sensor for a vehicle that is designed to detect an interior temperature of the vehicle and that can be arranged in the vehicle. The temperature sensor provides improved usability and can be manufactured more easily. In particular, the temperature sensor allows raw data of the temperature sensor to be evaluated by the temperature sensor itself. An advantage of this setup thus is that a tedious sensor-specific adaptation of an associated control device in the vehicle for evaluating the raw data is not necessary. Different temperature sensors can be used with the control device without the control device having to be adapted in a different way to each of these temperature sensors.

A method for operating an electric motor-driven refrigerant compressor of a motor vehicle is provided. A first temperature of a power semiconductor is measured, and a second temperature of the power semiconductor is determined using a theoretical model of the motor-driven refrigerant compressor. A difference between the first temperature and second temperature is determined. A fault is detected if the difference is greater than a first threshold. The invention further relates to a motor-driven refrigerant compressor of a motor vehicle, to the use of a motor-driven refrigerant compressor, and to a motor vehicle comprising a refrigerant circuit.

A heat exchanger includes a temperature sensor for a vehicle heating device, a heat input surface, an electrical heating element arranged on the heat input surface, and a heat output surface. The temperature sensor is arranged in a depression on the heat output surface.

A sensor device for calculating air temperature includes a support structure, to be traversed by the air and defining a seat having an air inlet and an air outlet, and a sensor arranged inside the seat to detect at least one first value and at least one second value of the air temperature that traverses the seat. The sensor device is configured so that, when detecting the first and second value, the air traverses the seat at a first and at a second speed, at which the sensor has a first and second heat transfer coefficient and first and second radiant power. The ratio between air speeds, heat transfer coefficients, or radiant powers is predetermined. The sensor device can be used with a data processing logic unit that calculates the air temperature starting from the first value, the second value, or the ratios between air speeds and radiant powers.

The present disclosure relates to an interior temperature sensor for a vehicle. The sensor includes a sensor casing disposed to expose a sensing surface to a space that is the subject of temperature measurement, a substrate extending in a direction from an inside of the sensing surface toward an outside while at least a part of the substrate bisects an inside of the sensor casing into upper and lower sections, an upper temperature sensing element provided on an upper surface of the substrate at a position inside the sensor casing, a lower temperature sensing element provided on a lower surface of the substrate at a position inside the sensor casing, and a compensation temperature sensing element provided on the substrate to be placed outside the sensor casing. Furthermore, a microcomputer determines an interior temperature of the vehicle based on the measured values.

An apparatus and a method for measuring interior temperature of a vehicle, the apparatus includes a base substrate provided inside an interior panel of the vehicle and a housing including an infrared ray blocking material for inhibiting temperature of an inner space from being increased. The housing includes an exposed part provided in one side of the housing and exposed to an interior space of the vehicle, and an opening on a side portion of the exposed part for allowing the inner space of the housing to communicate with the interior space through the opening. The apparatus further includes a non-contact sensor provided on the inner space of the housing for measuring temperatures of the exposed part and the opening, and a controller calculating temperature of the interior space of the vehicle with the measured values by the non-contact sensor.

A sensor device for measuring an interior temperature of a motor vehicle. The motor vehicle includes an inner trim which includes an aperture and latching springs. The sensor device includes a housing which is inserted in an insertion direction into the aperture of the inner trim of the motor vehicle, a circuit board arranged in the housing, at least one electrical temperature sensor element arranged on the circuit board, and latching lugs arranged on the housing which form an engagement with the latching springs formed on the inner trim. The engagement of the latching lugs with the latching springs forms a latching arrangement which fixes the housing when inserted into the aperture.

The invention relates to a method for determining an output temperature of a fluid after flowing through a PTC heater with a PTC heating element. In the method a current of the PTC heating element, a supply voltage of the PTC heating element and a duty cycle of the supply voltage are determined, and the output temperature of the fluid is calculated based on the current (I), the supply voltage and the duty cycle (PWM). The invention also relates to a PTC heater for carrying out the method.

A sensor-plug for insertion into a drier bottle of an automotive condenser. The sensor-plug is a unitary piece and positioned within the drier bottle to eliminate the use of a separate sensor on the opposite side of the condenser.