Patent · US Active

Method and system for pre-ignition control

US8156923B2 · kind B2 · utility

11Cited by

1References

17Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Thomas Lorenz · Chesterfield, US
Helmut Hans Ruhland · Eschweiler, DE
Moritz Klaus Springer · Hagen, DE
Georg Louven · Neuwied, DE

Key dates

Filing date	Apr 20, 2011
Grant date	Apr 17, 2012
Priority date	—
Expiry date	Apr 20, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Methods and systems are provided to address engine pre-ignition. One or more cylinders are alternately rich and lean operated for a duration to reduce engine thermal loading while maintaining an exhaust air-to-fuel ratio around stoichiometry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.