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...Technical Information Radiator installation note This TI relates to radiators which are fitted to vehicles of the series BMW E30, E36, E34 and E39 After the radiator has been replaced, the cooling system is filled with coolant mixture via the integrated expansion tank according to...

...Technical Information Electronically controlled cooling Reason for the development Perfect engine function also influences the engine' s performance. In the case of thermostat-controlled cooling, coolant temperatures vary from 95°C to 110°C in the part-load range and from 85°C...

...Technical Information Evaporator General points The evaporator is used for heat exchange between the surrounding air and the refrigerant in the air conditioning system. How it works The refrigerant, which is under high pressure, is injected into the evaporator via the expansion o...

...Technical Information Expansion tank General points The expansion tank in the cooling system is usually made of plastic and is used to trap the expanding coolant. It is normally installed in such a way that it represents the highest point in the cooling system. It is transparent to all...

...Condenser fans General To guarantee correct liquefaction of the coolant in the condenser or sufficient engine cooling, an additional or more powerful condenser f an is usually installed in vehicles with air-conditioning systems. Existing fans may also be replaced by more powerful o...

...Technical Information Fittings General points Fittings are available in different versions. It must be noted that connection muffs for flexible refrigerant pipelines have certain structural features at one end. • A cylindrical straight connection pipe, the outer diameter of which m...

...Fixed Orifice Tube General In contrast to circuits with an expansion valve the liquid refrigerant is injected into the evaporator by an orifice tube. The orifice tube is installed primarily in air conditioning systems with a variable displacement compressor.Function The fixed orifice tube...

...Technical Information Heat exchanger General points The heat exchanger is installed in the heating box of the vehicle interior and has coolant flowing through it. The interior air is routed through the heat exchanger and thus heated up. Structure/function Like the coolant radiator,...

...Air-conditioning high-voltage compressors General Information Vehicles with full-hybrid technology use high-voltage compressors that are not dependent on the running of the combustion engine. This makes for more comfort when it comes to the air-conditioning in such vehicles. A vehicl...

...Interior temperature sensor Unsatisfactory temperature regulation through dirty sensors The interior temperature sensor is fixed in the air-stream of a miniature fan (mostly in the control unit). It sends the temperature of the interior air as a resistance value to the ECU (the measurem...



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