Jujuprez a écrit :
je comprend mal la différence entre la clim auto thermatic et la clim auto thermotronic ?? parce que une clim auto..bah c'est une clim auto non??
Voilà ce que j'ai trouvé :
Citer :
Electronically controlled heating system for additional comfort
”Heatmatic” is the name given by Mercedes-Benz engineers to the automatic heating and ventilation system on board its passenger cars. As the name indicates, this is a little more than just an ordinary, conventionally engineered heater: Heatmatic consists of an electronically controlled system that measures the interior temperature by means of sensors and maintains it constant at the level desired by the driver and front passenger. This innovative technology has long been in standard use at Mercedes-Benz and has now been further developed and improved by Mercedes engineers for the C-Class. The control panel for the heating and ventilation system is characterized by a new design that provides a clearly organized disposition of all relevant functions, namely the 6-speed fan adjustment (previously 4-speed), air distribution, separate temperature controls for the driver and front passenger, air recirculation mode, defrost mode and heated rear window.
Furthermore, the number and area of the various outlets in the dashboard and rear footwell have been increased to provide comfortable – in other words draft-free – ventilation. This important aspect of draft prevention was also behind the development of an innovative indirect ventilation system that has its debut at Mercedes-Benz. An outlet located in the middle of the dashboard and directed at the windshield distributes cold air over a wide area and therefore without causing a draft.
Electric heater booster for CDI models
In addition to the standard-fitted Heatmatic system, the diesel models of the new C-Class are equipped with an additional electrical heating system to ensure pleasant warmth in the interior. This heater booster is necessary because although the CDI engines of the new C-Class have the advantage of consuming very little fuel, due to their high thermal efficiency they only transfer little heat to the coolant when running at part-throttle. As a result, the heating effect is less than in a car with a conventional engine. The additional heating requirement of the CDI models is also supplied by a water-cooled alternator (190 Amp) that rotates at up to 18000 rpm when the car is on the move and delivers its waste heat to the coolant.
Humidity sensor and variable compressor for optimum air conditioning
When it comes to air conditioning, Mercedes customers have a choice with the new C-Class. Two systems are available: the THERMATIC automatic climate control with automatic fan control and air distribution (standard in the C270 CDI, C240 and C320 models) and the THERMOTRONIC luxury automatic climate control with an activated charcoal filter, a sun and pollutant sensor and many other extra functions. Compared to the outgoing model, the electronic air conditioning control has been further improved: for example, two sensors (previously one) are now used to measure the interior temperature and to supply the system with even more precise data, so that it can respond even more rapidly to temperature fluctuations.
The newly developed automatic climate control of the C-Class operates on the same basic principle as many other air conditioning systems – namely the ”reheat” principle. In other words, even at cold outside temperatures, the system is in permanent operation and always first cools the incoming air, thereby drying it so that the windows remain mist-free. The air is then reheated to the desired temperature. The new feature of this intelligent circuit is a 3-stage control system that activates the reheat mode as a function of relative humidity. This feature has been made possible by a newly developed dew point sensor which supplies the air conditioning microcomputer with the data required for need-oriented control of the 3-stage reheat function and ensures that the incoming air is cooled and then reheated as a function of its actual moisture level. As a result, the air conditioner operates much more economically than conventional systems.
The new concept has also been made possible by the use of a new refrigerant compressor with infinitely variable electronic control as a function of the cooling power actually required. Whereas until now the air conditioning compressor was engaged or disengaged with the aid of an electromagnetic clutch, it is now directly connected to the engine by belt drive, so that it is in constant operation. The infinitely variable control function is provided by a solenoid valve.
The system stores the individual driver's settings and transfers the data to the electronic ignition key. This memory function ensures that the automatic climate control will restart with the desired program on the next journey.
THERMOTRONIC for luxury automatic climate control like in the S-Class
The newly developed luxury automatic climate control lives up to its name: it brings S-Class comfort to the C-Class. Examples of this luxury comfort include:
· Automatic control of temperature and air distribution individually for the driver's and front passenger's sides;
· Additional sensor signals for sunlight and pollutant levels in the outside air;
· Standard-fitted activated charcoal filter;
· Clearly organized display for temperature and fan speed;
· Storage of additional individual setting data in the electronic ignition key;
· Ventilation outlets at the rear.
The new Mercedes-Benz C-Class is the only car in its market segment to have automatic climate control using sensors for sunlight and pollutant levels as well as an activated charcoal filter.
Ca doit surtout se sentir dans la voiture, parce que niveau explication..bah c'est plein de capteurs en clair
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