The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2003
Filed:
Dec. 14, 2000
Christian Reiter, Graz, AT;
Herbert Thanner, Graz, AT;
AVL List GmbH, Graz, AT;
Abstract
An arrangement is described for the quantitative and qualitative analysis of particles in gases, especially of particles in the exhaust gas of internal combustion engines, comprising a vibrating system with at least one vibration sensor, preferably a piezoelectric resonator, which is provided with at least one collecting surface for the particles to be analyzed, a circuit for the determination of characteristic vibration parameters as well as guide and transport arrangements for the gas to be analyzed. In order to obtain as large as possible a measuring range with a linear characteristic line and therewith a great sensitivity and dynamics with respect to the mass load in the entire measuring range, there is provided a vibration sensor stationary relative to the measuring chamber, and at least one active deflecting device for the gas or the particles contained in the gas.