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:
Jun. 04, 2019
Filed:
Apr. 12, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
William L. Villaire, Clarkston, MI (US);
Manoj R. Chaudhari, Clinton Township, MI (US);
Edward J. Strzelecki, Oxford, MI (US);
Philip A. Yaccarino, Troy, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
An evaporative emissions control system includes an evaporative emissions control canister, a first fuel vapor return conduit including a first end fluidically connected the evaporative emissions control canister and a second end connectable to an internal combustion (IC) engine. A first valve is fluidically connected to the first fuel vapor return conduit. A second fuel vapor return conduit includes a first end portion fluidically connected to the first fuel vapor return conduit and a second end portion configured to be arranged in a vehicle fuel tank. A second valve is fluidically connected to the second fuel vapor return conduit at the second end portion in the vehicle fuel tank. A vapor return system includes a pump fluidically connected to the second valve in the vehicle fuel tank.