Provided is an air-conditioning system including: an air pollution level detector configured to detect each of a pollution level of outside air, which is air outside a vehicle, and a pollution level of inside air, which is air inside the vehicle; and an air-conditioning control device configured to control air conditioning by switching an air-conditioning mode of the vehicle between an inside-air circulation mode and an outside-air introduction mode. The air-conditioning control device switches the air-conditioning mode from the outside-air introduction mode to the inside-air circulation mode based on the pollution level of the outside air acquired from the air pollution level detector, and switches the air-conditioning mode from the inside-air circulation mode to the outside-air introduction mode based on the pollution level of the inside air acquired from the air pollution level detector.

A system for providing filtered air to an enclosed space includes a first air feed pump to pull air from an environment and push pressurized air to the enclosed space, a power source adapted to provide electrical power to the first air feed pump, a first filter media positioned between the first air feed pump and the enclosed space to provide coarse filtration of the pressurized air pumped from the first air feed pump through the first filter media and remove particles that are larger than approximately 5 microns, and a second filter media positioned between the first filter media and the enclosed space to provide fine filtration of the pressurized air pumped from the first filter media through the second filter media and remove particles that are between 1 nanometer and 20 nanometers in size.

A system for providing allergen information includes an allergen sensor located on a vehicle designed to detect allergen data corresponding to levels of at least one allergen in an environment of the vehicle. The system further includes a network access device located on the vehicle and designed to transmit the allergen data to a remote server and to receive an allergen map from the remote server, the allergen map being based on the allergen data from the vehicle and from additional vehicles, and indicating the levels of the at least one allergen at various locations on the allergen map. The system further includes an output device designed to output data. The system further includes an electronic control unit (ECU) coupled to the allergen sensor, the network access device, and the output device and designed to control the output device to output the allergen map received from the remote server.

A nebulizer system for a motor vehicle may include a tank for a liquid, a nebulizer chamber, and a filter system capable of filtering the liquid contained in the tank for the liquid before it passes into the nebulizer chamber. The nebulizer chamber may have a nebulizer nozzle provided with an acoustic wave output device such that the liquid from the tank forms a mist of droplets of the liquid. The mist is intended to pass into a passenger compartment of the motor vehicle. Additionally, the nebulizer system may have an input module for air. The inlet module may have an air injection volute capable of channeling the air in the direction of the internal volume of the nebulizer chamber.

A smart multi-modal vehicular air filtration management system including a first filter element and a second filter element disposed in a fresh air housing, wherein the fresh air housing has an inlet and an outlet. Additionally, a third filter element is provided which is disposed in a cabin housing, the cabin housing having one or more inlet. A fluid channel arranged between the fresh air and cabin housing. Finally, a diverter is included which is disposed near an outlet of the fresh air housing, wherein the diverter is configured to cause air to flow through the fresh air housing selectively through one or both of the first filter element and the second filter element.

The present invention relates to an activated carbon sheet, and particularly relates to an activated carbon sheet for air purification comprising activated carbon, which is suitable for removing volatile organic compounds in the passenger compartment of an automobile or the like. An object of the present invention is to provide a sheet that is excellent in toluene adsorption capacity and flame retardancy. An activated carbon sheet for air purification comprising an activated carbon fiber, granular or powdered activated carbon, and a fibrillated fiber, wherein a mass (g/m.sup.2) of the activated carbon fiber is 5 g/m.sup.2 or more, a pressure loss as measured by a method set forth below is 150 Pa or less, and a burn distance as measured by the FMVSS 302 burning test is 51 mm or less: <pressure loss test method> the method is conducted in accordance with JIS B 9927:1999 “Appendix (Standard) Cleanroom—Air filters—Test methods”, 3.2 “Pressure Loss Test” as follows: a piece of the activated carbon sheet cut in the form of a circle with a diameter of 110 mm is used as a measurement sample; air is sucked though the measurement sample at a linear velocity of 0.1 m/s, and a difference in static pressure between an upstream side and a downstream side of the activated carbon sheet is measured with a differential pressure gauge; and figures up to the one's place of the measured value are used as significant figures.

A screen assembly adapted to be removably coupled to an air filter of a construction vehicle includes a frame member including a first portion and a second portion. The screen assembly includes a screen member coupled to the frame member such that a hollow space is defined by the screen member and the frame member. The screen member includes a plurality of perforations adapted to allow passage of air therethrough. The plurality of perforations are further adapted to restrict an ingress of debris into the hollow space of the screen assembly.

A nebulizer system for a motor vehicle may include a tank for a liquid, a nebulizer chamber, and a filter system capable of filtering the liquid contained in the tank for the liquid before it passes into the nebulizer chamber. The nebulizer chamber may have a nebulizer nozzle provided with an acoustic wave output device such that the liquid from the tank forms a mist of droplets of the liquid. The mist is intended to pass into a passenger compartment of the motor vehicle. Additionally, the nebulizer system may have an input module for air. The inlet module may have an air injection volute capable of channeling the air in the direction of the internal volume of the nebulizer chamber.

An odor reproducing apparatus of a HVAC system for the vehicle may include an odor reproducing device configured to reproduce and evaluate odor by applying a HVAC system module, a heat exchange outdoor device mounted at one side of the odor reproducing device to control a temperature and humidity of an experimental space, and a control device mounted at one side of the odor reproducing device and the heat exchange outdoor device to control an operation of the odor reproducing device and an operation of the heat exchange outdoor device to implement a field environment and vehicle conditions for evaluating an odor improvement effect of the HVAC system reflecting an odor reduction technology.

An odor reproducing apparatus of a HVAC system for the vehicle may include an odor reproducing device configured to reproduce and evaluate odor by applying a HVAC system module, a heat exchange outdoor device mounted at one side of the odor reproducing device to control a temperature and humidity of an experimental space, and a control device mounted at one side of the odor reproducing device and the heat exchange outdoor device to control an operation of the odor reproducing device and an operation of the heat exchange outdoor device to implement a field environment and vehicle conditions for evaluating an odor improvement effect of the HVAC system reflecting an odor reduction technology.