Hydrocarbon vapor start techniques using a purge pump and hydrocarbon sensor

US10247116B2 · 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: Apr 2, 2019
• Expiry date: Dec 22, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M21/0287
• 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 to an engine of the vehicle via a vapor line and a purge valve. The 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. A controller is configured to: detect an imminent cold start of the engine and, in response to the detecting, perform the cold start of the engine by controlling at least one of the purge pump and the purge valve, based on the measured amount of HC, to deliver a desired amount of fuel vapor to the engine, which decreases HC emissions by the engine.