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Low-cost high-efficiency GDCI engines for low octane fuels

United States Patent

9,863,305
January 9, 2018
View the Complete Patent at the US Patent & Trademark Office
A GDCI engine has a piston arranged within a cylinder to provide a combustion chamber. According to one embodiment, the GDCI engine operates using a method that includes the steps of supplying a hydrocarbon fuel to the combustion chamber with a research octane number in the range of about 30-65. The hydrocarbon fuel is injected in completely stratified, multiple fuel injections before a start of combustion and supplying a naturally aspirated air charge to the combustion chamber.
Kolodziej; Christopher P. (Mosinee, WI), Sellnau; Mark C. (Bloomfield Hills, MI)
DELPHI TECHNOLOGIES, INC. (Troy, MI)
15/ 270,395
September 20, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Contract No. DE-EE0006839 awarded by the Department of Energy. The government has certain rights in the invention.