초록 ▼

An air conditioning installation for the cabin of a motor vehicle comprises an air treatment and distribution unit, consisting of a trunk containing distribution valves and a mixing valve, together with a heater. The installation treats fresh air, drawn from outside and/or recirculated air and deliv

An air conditioning installation for the cabin of a motor vehicle comprises an air treatment and distribution unit, consisting of a trunk containing distribution valves and a mixing valve, together with a heater. The installation treats fresh air, drawn from outside and/or recirculated air and delivered by a blower, and distributes the treated air into the cabin of the vehicle. The installation includes sensors for periodic measurement of the temperature inside the cabin, the outside temperature and the temperature of the engine coolant fluid. It also includes a setting module whereby the demand temperature in the cabin can be set by the user, and control means for measuring a difference between the demand temperature and the prevailing inside temperature. The control means include a regulating module for defining required adjustments for the various components of the air treatment and distribution unit and for the blower, these adjustments being derived from the difference mentioned above, the outside temperature, and at least three fuzzy logic rules which are stored in a memory.

대표청구항 ▼

[ What is claimed is:] [1.] Heating and ventilating apparatus for the cabin of a motor vehicle having a liquid-cooled engine with a coolant fluid circuit, the apparatus comprising:an air treatment and distribution unit having a casing, adjustable distribution valves in the casing for controlling dis

[ What is claimed is:] [1.] Heating and ventilating apparatus for the cabin of a motor vehicle having a liquid-cooled engine with a coolant fluid circuit, the apparatus comprising:an air treatment and distribution unit having a casing, adjustable distribution valves in the casing for controlling distribution, into the cabin of air treated by the apparatus, a heater in the casing, an adjustable mixing valve in the casing associated with the heater for controlling flow of air through the heater, the casing including adjustable air inlet means comprising fresh air inlet means for receiving air from outside the vehicle and recycled air inlet means for receiving air from the cabin, the mixing valve, heater and distribution valves being downstream of the said inlet means;a blower associated with the said unit, for drawing air through the inlet means for treatment of said air in the said unit;a first sensor for periodically measuring an inside temperature, being the air temperature in the cabin;a second sensor for periodically measuring an outside temperature, being a temperature outside the cabin;a setting module arranged to be accessible by an occupant of the cabin for setting demand values of atmospheric parameters, said parameters including at least a demand temperature for the cabin; andcontrol means connected with said blower, first and second sensors, and setting module, the control means being adapted for measuring a first value difference, being the difference between the demand temperature and the prevailing said inside temperature, the control means comprising:a first memory for storing the prevailing values of the said inside and outside temperatures received from said first and second sensors respectively, and the demand temperature received from the setting module; and a regulating module for defining required adjustments of at least the adjustable components of the apparatus included in the said air treatment and distribution unit, and required adjustments for the blower, by derivation of the said required adjustments from the said first value difference and from the prevailing outside temperature,wherein the apparatus further includes a third sensor associated with the coolant fluid circuit for measuring a water temperature, being the temperature of the coolant liquid of the engine, the said control means including a second memory adapted to store:a first table of fuzzy rules establishing correspondence between ranges of said outside temperature and positions of the mixing valve;a second table of fuzzy rules establishing correspondence between pairs of values consisting of ranges of said outside temperature and ranges of mixing valve position, on the one hand, and required positions of the distribution valves on the other; anda third table of fuzzy rules establishing correspondence between pairs of values consisting of ranges of said water temperature and said first difference, on the one hand, and required adjustments for the blower on the other, and wherein the regulating module is adapted at least:to compare the said first table with the prevailing outside temperature and to derive therefrom a definition of a required position for the mixing valve;to compare the said second table with the pair of values consisting of the prevailing said outside temperature and the mixing valve position just defined, and to define the required positions of the distribution valves by derivation from the resulting comparison; andto compare the said third table with the prevailing water temperature, and to define the required adjustment for the blower by derivation from the resulting comparison.