Fuel system control

US10662900B2 · kind B2 · utility

Assignee

• Eaton Corporation · US

Inventors

• Max Russell Franklin · Birmingham, US
• Nikhil Nahar · Pune, IN
• Vaughn K. Mills · Chelsea, US
• Mark Beaupre · Southfield, US
• Matthew Memmer · Plymouth, US
• Steven L. Ambrose · Farmington Hills, US
• Robert P. Benjey · Dexter, US
• Kenneth Brauning · Clinton Township, US

Key dates

• Filing date: May 8, 2017
• Grant date: May 26, 2020
• Expiry date: Jan 6, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2025/0863
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An evaporative emissions control system includes a first vent valve configured to selectively open and close a first vent, a second vent valve configured to selectively open and close a second vent, a fuel level sensor configured to sense a fuel level in the fuel tank, a pressure sensor configured to sense a pressure in the fuel tank, an accelerometer configured to measure an acceleration of the vehicle, and a controller configured to regulate operation of the first and second vent valves to provide pressure relief for the fuel tank. The controller is programmed to determine if a refueling event is occurring based one signals indicating the fuel level is increasing, the pressure in the fuel tank is increasing, and the vehicle is not moving, and open at least one of the first and second vent valves based on determining the refueling event is occurring.