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:
Dec. 25, 2007
Filed:
Oct. 24, 2006
Applicant:
David William Balsdon, Chatham, CA;
Inventor:
David William Balsdon, Chatham, CA;
Assignee:
Siemens VDO Automotive Canada Inc., Chatham, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 33/04 (2006.01); F02M 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A technique is provided for purging an adsorption canister in a fuel tank vent system. The technique provides a relatively high purge flow under conditions wherein the intake manifold vacuum is relatively low. A sonic nozzle is placed in the purge line between the existing purge valve and the adsorption canister. The sonic nozzle includes a tap at its throat for producing a vacuum in response to flow in the purge line. The vacuum is used to control a vacuum operated diaphragm valve in a parallel purge line. The system therefore supplements purge flow through the adsorption canister to the intake manifold.