BMW 3 series E46
Since 1998 of release
Repair and car operation
The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
- Systems of cooling, heating
+ System of cooling of the engine
- Heater and the conditioner of air of salon
Removal and installation of the block of management of a heater/conditioner
Removal and installation of the fan of a heater
Replacement of additional resistors of the fan of a heater
Removal and installation air дефлекторов
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
+ Electric equipment schemes
Heater and the conditioner of air of salonThe scheme of a contour of the conditioner of air of salon
Heater. Models without the conditioner
Heater. Models with the conditioner
The holder of the compressor of the conditioner. Models 316i, 318i
Fresh air arrives in salon through air collector a box, the air filter of ventilation of salon and a fan casing. Air passes through a box of a heater and is distributed through various заслонки on separate nozzles. Air giving is defined by number of turns of the electric motor of the fan.
Depending on the established temperature in salon fresh air can go to the heat exchanger. The heat exchanger is located in a heating box and warmed up by a hot cooling liquid. Air passing through the heat exchanger heats up as a result of washing of plates of the heat exchanger and then arrives in salon. Thermal capacity of a heater is regulated by the expense of a cooling liquid. The electromagnetic valve on the liquid pipeline for this purpose serves.
The diesel engine owing to higher efficiency has insignificant thermal productivity. Therefore installation of a separate heater which if necessary in addition warms up a cooling liquid here is required. The additional heater is warmed with fuel from the separate fuel pump and if necessary is automatically connected.
Heating without the conditioner: the Temperature in salon can be established by a regulator. By means of two other regulators the number of turns of the four-stage fan of a heater is established and air distribution on nozzles is made.
The conditioner: the Temperature in salon is established by a key on the control panel and displayed on a digital board. According to it the electronic monitor of automatics of the conditioner regulates opening of the crane of a heater depending on temperature in salon. Gauges of temperature of air in salon are in the control panel behind lattices for air input. Electronic regulation allows to maintain temperature of air in constant salon, irrespective of speed of the car and external temperature.
At inclusion of the conditioner air at first is cooled, dried up and then depending on the established value of temperature again is warmed up.
If всасывание fresh air it is not supposed, for example, at poor quality of external air, the system pressing of a corresponding key can be switched to a circulation mode. Thus in salon internal air circulates.
At inclusion “Automatischer Umluft Control” (“Automatic control of circulation” - the special equipment) the system joins independently in a circulation mode as soon as in external air there are harmful components, for example, soot from combustion of diesel fuel. If quality of external air is again restored, the system is automatically switched to consumption of external air.
The conditioner works as a refrigerator: the compressor set in motion from the electric motor, compresses a coolant in a gas phase, free from FCKW (R 134), and not putting harm to environment. The coolant is warmed up thus and goes to the condenser. There it is cooled and сжижается. Through the broad valve the coolant extends and arrives in the evaporator where owing to the low pressure evaporates. As a result of process of expansion air passing through system of pipes and plates outside, gives heat.
Thus, air is cooled, and the moisture containing in it turns to a condensate which is taken away for car limits.
At the working engine and the included fan in salon through various apertures cooled air can be brought. Intensity of cooling depends on the established temperature and number of turns of the electric motor of the fan.
The electronic monitor is built in an element of management of the conditioner.