Device for controlling the ventilation of an internal space, particularly in motor vehicles

US5259813A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Jorg Abthoff · Plüderhausen, DE
• Hans-Dieter Schuster · Schorndorf, DE
• Friedhelm Nunnemann · Winnenden, DE
• Gunter Loose · Waiblingen, DE
• Michael Osswald · Ludwigsburg, DE
• Michael-Rainer Busch · Großenhain, DE
• Markus Fortkord · Waiblingen, DE

Key dates

• Filing date: Feb 26, 1992
• Grant date: Nov 9, 1993
• Expiry date: Feb 26, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60H3/0085
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The quality of the external air is determined by means of a pollutant sensor. The quality of the internal air is determined by calculation taking account of the air quantities introduced from outside into the internal space. A decision between air supply operation and air recirculation operation is then made on the basis of a comparison of the air qualities inside and outside. The pollutant sensor is preferably located in a casing whose internal space is accessible to gases through an opening which is preferably sealed by a gas-permeable membrane.