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:
May. 19, 2020
Filed:
Dec. 19, 2018
Roger C Sager, Munith, MI (US);
Nithin Baradwaj, Ann Arbor, MI (US);
Joseph M, Jackson, MI (US);
Matthew M Delleree, Brighton, MI (US);
Gregg T Black, Livonia, MI (US);
Jennifer Bartaszewicz, Northville, MI (US);
James J Daley, Jackson, MI (US);
David R Pedro, Tecumseh, CA;
Ruoming Gu, South Lyon, MI (US);
Edward E Baker, Livonia, MI (US);
Roger C Sager, Munith, MI (US);
Nithin Baradwaj, Ann Arbor, MI (US);
Joseph M, Jackson, MI (US);
Matthew M Delleree, Brighton, MI (US);
Gregg T Black, Livonia, MI (US);
Jennifer Bartaszewicz, Northville, MI (US);
James J Daley, Jackson, MI (US);
David R Pedro, Tecumseh, CA;
Ruoming Gu, South Lyon, MI (US);
Edward E Baker, Livonia, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
An evaporative emissions (EVAP) system and its method of control comprise commanding a three-way valve to fluidly connect an auxiliary vapor canister and a bottom portion of a fuel tank, controlling at least one of an engine of the vehicle and a purge pump of the EVAP system disposed between the engine, a separate primary vapor canister, and the auxiliary vapor canister to draws fuel vapor from the fuel tank into the auxiliary vapor canister for storage, commanding the three-way valve to fluidly connect the bottom portion of the fuel tank to an atmosphere outside of the EVAP system to generate additional fuel vapor in the fuel tank, commanding the three-way valve to fluidly connect the auxiliary vapor canister to the atmosphere, and controlling at least one of the engine and the purge pump to draw the fuel vapor from the auxiliary vapor canister into the engine.