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AssigneeDaimlerChrysler AG
InventorsRoland Caesar, Thomas Finkenberger, Jan Gaertner, Wolfgang Straub, Juergen Wertenbach
Estimating the term…
A refrigerant circuit for a motor vehicle air-conditioning system has a refrigerant compressor, a cooler connected downstream of the refrigerant compressor, a restrictor for expanding the refrigerant, and an evaporator for transferring heat to the refrigerant. Pressure in the refrigerant circuit is measured firstly on the high-pressure side and secondly on the low-pressure side. An air-conditioning system can be driven directly or indirectly by the motor vehicle driving engine. The refrigerant in the refrigerant circuit is almost completely liquefied upstream of the restrictor, so that it is easy to determine the refrigerant mass flow. As a result, it becomes possible to determine the compressor torque which is consumed by the refrigerant circuit and to control the motor vehicle driving engine accordingly.
A method for operating a refrigerant circuit of an air-conditioning system of a motor vehicle, having a refrigerant compressor for compressing substantially gaseous refrigerant, a cooler, which is connected downstream of the refrigerant compressor, for dissipating heat from the refrigerant, a restrictor means for expanding the refrigerant, and an evaporator for transferring heat to the refrigerant, comprising:
A method for operating an internal combustion engine, in which an air-conditioning system is driven directly or indirectly by the engine, comprising:
A refrigerant circuit of an air-conditioning system of a motor vehicle, comprising:
Dependencies are inferred from the claim text.