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:
Aug. 31, 2021
Filed:
Nov. 20, 2019
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);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
An evaporative emissions control system comprising an evaporative emissions control (evap) canister. A fuel vapor feed conduit includes a first end fluidically connected to the evap canister, a second end connected to an internal combustion (IC) engine and a purge valve fluidically connected thereto. A fuel vapor conduit includes a first end fluidically connected to the evap canister and a second end configured to extend into a vehicle fuel tank. A fuel vapor vent valve is fluidically connected to the fuel vapor conduit at the second end thereof. A vapor return system includes a fuel pump fluidically connected to the fuel vapor conduit through an intermediate bypass conduit having a first end fluidically connected to an intermediate portion of the fuel vapor conduit and a second end extending into the vehicle fuel tank and in communication with the vapor return system.