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:
Apr. 23, 1996
Filed:
Dec. 19, 1994
Hartmut Kolb, Ludwigsburg, DE;
Mercedes-Benz A.G., Stuttgart, DE;
Abstract
In an arrangement for determining leaks in a tank venting system of a motor vehicle which includes a fuel tank, an adsorption filter in communication with the fuel tank, a venting pipe, a regeneration pipe connecting the adsorption filter to the intake manifold of an internal combustion engine, the venting pipe extends to an area adjacent the filler neck of the fuel tank and a test apparatus is provided with a test pipe having a seal sleeve for placement over the tank filler neck and the end of the venting pipe for applying pressure to the tank venting system by means of pumps disposed in the test apparatus and the test apparatus further includes a pressure sensor for determining the pressure in the tank venting system and a control device for controlling application of pressure to the venting system and for the evaluation of the pressure values determined by the pressure sensor for indicating a leak in the venting system.