Abstract:
Die Erfindung betrifft ein Verfahren (76) zum Betrieb eines elektromotorischen Kältemittelverdichters (12) eines Kraftfahrzeugs (2). Eine erste Temperatur (80) eines Leistungshalbleiters (66) wird gemessen, und eine zweite Temperatur (84) des Leistungshalbleiters (66) wird anhand eines theoretischen Models (86) des elektromotorischen Kältemittelverdichters (12) bestimmt. Eine Differenz (96) zwischen der erste Temperatur (80) und der zweiten Temperatur (84) wird bestimmt. Ein Fehler (104) wird erkannt, wenn die Differenz (96) größer als ein erster Grenzwert (100) ist. Die Erfindung betrifft ferner einen elektromotorischer Kältemittelverdichter (12) eines Kraftfahrzeugs (2) sowie eine Verwendung eines elektromotorischen Kältemittelverdichters (12) als auch ein Kraftfahrzeug (2) mit einem Kältemittelkreislauf (8).
Abstract:
A thermochromic clip provides a visual indication of the temperature of the air flowing through an air vent as refrigerant is introduced into an air conditioning system. The thermochromic clip including an elongate body having an outer facing surface; a fastening member on the elongate body. The fastening member being sized and configured for selective attachment to the air vent. At least the outer facing surface coated with a thermochromic material. The thermochromic material of the outer facing surface being structured, and disposed for changing from a first color state to a second color state in response to a change in temperature that places the thermochromic material at a temperature equal to or below a predetermined temperature value.
Abstract:
A measurement system for monitoring ambient temperature and airspeed is disclosed. The measurement system uses a single temperature sensor, disposed in the environment under test, in communication with a controller. The controller supplies a first current to the temperature sensor to measure the ambient temperature of the environment. This first current is selected so that it results in little or no self-heating of the temperature sensor. After the ambient temperature is determined, a second, higher current is applied to the temperature sensor. This higher current serves to heat the temperature sensor be a predetermined amount. Based on the expected temperature rise, the ambient temperature and the actual monitored temperature, the airspeed may be determined.
Abstract:
The aim of the invention is to provide a sensor configuration which detects fundamental physical and/or chemical parameters that influence the human environment. Appropriate signals are generated, said signals reflecting the subjective perception of the present environment using corresponding parameters. The invention discloses a sensor assembly, which, by measuring several influential factors or parameters, detects the way in which a human being perceives environmental conditions. The invention thus relates to an assembly of several individual sensor components comprising signal processing electronics. The signals of individual parameters (S1... S6) that emanate from the individual sensor components indicate individual measured variables, which in themselves do not generate a comprehensive signal that can be used to describe the environment to be comprehensively assessed by human beings. Variables are generated from several individual signals using specific evaluation strategies (10), said variables indicating the way human beings perceive the environment. For example, a perceived temperature is determined.
Abstract:
PROBLEM TO BE SOLVED: To provide an aspirator capable of increasing a suction amount of secondary air and improving its performance, and a vehicular air conditioner using the aspirator.SOLUTION: The aspirator includes: a nozzle 15 which sucks the secondary air; a body part 17 which forms a scroll-shaped air flow passage 16 in the outer periphery of the nozzle 15; a primary air inflow passage 18 which tangentially communicates with the air flow passage 16; and a diffuser which is connected with the open end side of the body part 17, and has the front end of the nozzle 15 disposed at the throat position thereof. The internal wall 18A of the primary air inflow passage 18 communicating with the scroll-shaped air flow passage 16 is arranged in an offset position toward the outside relative to the center of the nozzle 15 so that primary air taken from the primary air inflow passage 18 flows into the scroll-shaped air flow passage 16 from one direction.