Fuel system control

US11092113B2 · kind B2 · utility

Assignee

• Eaton Intelligent Power Limited · IE

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

Key dates

• Filing date: May 21, 2020
• Grant date: Aug 17, 2021
• Expiry date: May 21, 2040

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.