Patent ID: 7521018
Filing Date: 2009-04-21
Classification: B60H,G01N,Y02A,Y10T

Abstract:
1. A device for controlling a ventilation system in the interior of a motor vehicle, comprising: a gas concentration determining arrangement to determine an exterior value representing an exterior concentration of a gas in exterior air surrounding the vehicle, and to determine an interior value representing an interior concentration of the same gas in the air contained in the interior of the vehicle; and an air flow control arrangement, via which a proportion of circulating air and a proportion of fresh air from the exterior of the vehicle in the air delivered to the interior by the ventilation system are controlled as a function of a determined interior value or a determined exterior value; wherein the gas concentration determining arrangement consists of a single gas sensor, and wherein the gas sensor is in a part of the ventilation system, through which fresh air is suppliable to the interior of the vehicle in a fresh air mode and circulating air is circulatable in the vehicle in a recirculating mode flow.