Low-cost high-efficiency GDCI engines for low octane fuels
AssigneeDelphi Technologies, Inc.
InventorsChristopher P. Kolodziej, Mark C. Sellnau
Life of this patent
Estimating the term…
Abstract
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.
Claims19
A method of operating a gasoline direct injection compression ignition engine having a piston arranged within a cylinder to provide a combustion chamber, the method comprising the steps of:
- supplying a hydrocarbon fuel to the combustion chamber with a research octane number in the range of about 30-65;
- wherein the hydrocarbon fuel has a fraction of crude oil with a boiling point within a range of about 30-180 Celsius;
- injecting the hydrocarbon fuel in completely stratified, multiple fuel injections before a start of combustion;
- and
- supplying a naturally aspirated air charge to the combustion chamber.
A method of operating a gasoline direct injection compression ignition engine having a piston arranged within a cylinder to provide a combustion chamber, the method comprising the steps of:
- supplying a hydrocarbon fuel to the combustion chamber and having the following properties:
- a) a research octane number in the range of about 30-65;
- b) a fraction of crude oil having a boiling point within a range of about 30-180° C.;
- and
- injecting the hydrocarbon fuel in completely stratified, multiple fuel injections before a start of combustion.
Dependencies are inferred from the claim text.