Motor-vehicle auxiliary ventilation system

A motor-vehicle having a motor-vehicle structure defining a passenger compartment equipped with one or more electrically-operated windows, said motor-vehicle comprising:

• one or more electrically-operated valves, arranged on a structure of the motor-vehicle in a lower position with respect to said windows so that the passenger compartment of the motor-vehicle communicates with an external environment;
• and
• one or more electronic control units programmed to activate a ventilation mode of the passenger compartment when the motor-vehicle is parked with the engine off, even with a driver outside the motor-vehicle, said passenger compartment ventilation mode comprising controlling at least a partial opening of one or more windows and an opening of the one or more of said valves for generating a natural air flow through the one or more of said valves from a bottom upwards through the motor-vehicle passenger compartment and through the one or more windows, and
• wherein said one or more valves each comprise at least one shutter having an upper side mounted pivoting about an axis substantially horizontal to the structure of the motor-vehicle,
• wherein said one or more electronic control units are programmed to activate the ventilation mode of the passenger compartment to cause the at least partial opening of said one or more windows and to cause the opening of said one or more valves when the motor-vehicle is parked with the engine off, with the driver outside the motor-vehicle, said activation of the ventilation mode being controllable by a user by means of an electronic interface device, and
• wherein said motor-vehicle is also provided with an auxiliary refrigeration system separate from said one or more valves, said auxiliary refrigeration system located in an auxiliary portion of a duct in fluid communication with and upstream of a primary refrigeration and heating system located in a main portion of the duct such that an airflow from said auxiliary refrigeration system flows to said main portion of the duct and passes said primary refrigeration and heating system when said auxiliary refrigeration system is activated to cool the passenger compartment of the motor-vehicle when the motor-vehicle is stationary with the engine off, even with the driver outside the motor-vehicle,
• both the auxiliary refrigerating system and the ventilation mode being controlled by said electronic control units of the motor-vehicle, so as to allow the driver, before boarding the motor-vehicle, to bring the temperature inside the passenger compartment closer to an ideal temperature that allows the best comfort for the user.