Fuel control for spark ignited engine having a particulate filter system

US8875494B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Carolyn Parks Hubbard · Canton, US
• Robert Walter McCabe · Novi, US
• Eva Thanasiu · Trenton, US
• Jeffrey Scott Hepburn · Dearborn, US
• Helmut Hans Ruhland · Eschweiler, DE
• Moritz Klaus Springer · Hagen, DE
• Thomas Lorenz · Chesterfield, US
• Georg Louven · Neuwied, DE
• David Karl Bidner · Livonia, US

Key dates

• Filing date: Dec 15, 2009
• Grant date: Nov 4, 2014
• Expiry date: Jul 17, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A system for filtering and oxidizing particulate matter produced by a gasoline direct injection engine is disclosed. In one embodiment, engine cylinder air-fuel is adjusted to allow soot to oxidize at an upstream particulate filter while exhaust gases are efficiently processed in a downstream catalyst.