Combustion system for an engine having multiple fuel spray induced vortices
AssigneeGM Global Technology Operations LLC
InventorRobert D. Straub
Life of this patent
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Abstract
An internal combustion engine includes an engine assembly that defines a bore, and a piston disposed and moveable within the bore. The piston and the engine assembly cooperate to define a combustion chamber therebetween. A direct injection fuel system directs a fuel spray into the combustion chamber along a linear path. The combustion chamber includes a contoured surface having a plurality of annular recesses. The contoured surface divides and re-directs the fuel spray from the linear path into each of the annular recesses to form a plurality of independent rotating vortices.
Claims20
An internal combustion engine comprising:
- an engine assembly defining a bore extending along a central bore axis;
- a piston disposed within the bore and configured for reciprocating movement within the bore along the central bore axis;
- wherein the piston and the engine assembly cooperate to define a combustion chamber;
- a direct injection fuel system having a fuel injector configured for injecting a fuel spray into the combustion chamber along a linear path;
- and
- wherein the combustion chamber includes a contoured surface defining a plurality of annular recesses configured for re-directing the linear path of the fuel spray into a plurality of independent rotating vortices.
A method of operating an internal combustion engine, the method comprising:
- injecting a fuel spray along a linear path into a combustion chamber defined by a piston and an engine assembly;
- dividing the fuel spray into portions;
- and
- re-directing the linear path of each of the portions of the fuel spray into a plurality of independent rotating vortices.
Dependencies are inferred from the claim text.