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:
Feb. 06, 2001
Filed:
Feb. 22, 1999
Applicant:
Inventors:
Helmut Schwegler, Pleidelsheim, DE;
Manfred Zimmermann, Bad Rappenau, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 3/32 ; G01M 1/500 ; G01M 3/26 ;
U.S. Cl.
CPC ...
G01M 3/32 ; G01M 1/500 ; G01M 3/26 ;
Abstract
In a diagnosis module for leak testing a container of a tank ventilation system of a motor vehicle, which has a reference leak through which a volume flows and is matched to a permissible leakage of the container. The reference leak is constituted by a number of diaphragms disposed in series in the flow direction, in which each of the diaphragms have a throttle opening (,). The advantage of this diagnosis module lies in the large diameter throttle openings, which are less susceptible to malfunction when there is a permitted leakage hole that has a significantly smaller diameter.