Evaporative emissions control system including a purge pump and hydrocarbon sensor

US9879623B2 · kind B2 · utility

Assignee

• FCA US LLC. · US

Inventors

• Joseph M Dekar · Jackson, US
• Roger C Sager · Munith, US
• James J. Daley · Westfield, US
• William B. Blomquist · Lake Orion, US
• Jeffrey P. Wuttke · Sterling Heights, US
• Russell J. Wakeman · Canton, US
• Adam Fleischman · White Lake, US
• Ronald A Yannone, Jr. · Clinton, US
• Luis Del Rio · Ann Arbor, US
• Mark L Lott · Oak Harbor, US
• Edward Baker · Livonia, US
• Michael T. Vincent · Sidney, US
• Wei-Jun Yang · Farmington Hills, US
• Aikaterini Tsahalou · Shelby Charter Township, US

Key dates

• Filing date: May 25, 2016
• Grant date: Jan 30, 2018
• Expiry date: May 25, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M35/10222
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An evaporative emissions (EVAP) control system for a vehicle includes a purge pump configured to pump fuel vapor trapped in a vapor canister to an engine of the vehicle via a vapor line when engine vacuum is less than an appropriate level for delivering fuel vapor to the engine, the fuel vapor resulting from evaporation of a liquid fuel stored in a fuel tank of the engine. The EVAP control system includes a hydrocarbon (HC) sensor disposed in the vapor line and configured to measure an amount of HC in the fuel vapor pumped by the purge pump to the engine via the vapor line. The EVAP control system also includes a controller configured to, based on the measured amount of MC, control at least one of the purge pump and a purge valve to deliver a desired amount of fuel vapor to the engine.