Piston bowls
AssigneesCummins Inc., Achates Power, Inc.
InventorsFlorin Mocanu, Eric M. Osecky, Robert G. Sperry, John M. Deur
Life of this patent
Estimating the term…
Abstract
The present disclosure provides piston, comprising: a skirt having an upper body portion; a crown formed at the upper body portion; and a piston bowl formed at the crown. The piston bowl includes a first combustion surface and a second combustion surface opposite the first combustion surface. Each of the first combustion surface and the second combustion surface are formed and positioned to accommodate inflowing injector spray so as to reduce heat transfer caused by impingements made by the inflowing injector spray.
Claims20
A piston comprising:
- a skirt having an upper body portion:
- a crown formed at the upper body portion;
- and
- a piston bowl formed at the crown, the piston bowl including a plurality of combustion surfaces defining two functionally separated, opposing combustion chambers formed and positioned to accommodate inflowing injector spray so as to reduce heat, transfer caused by impingements made by the inflowing injector spray.
An internal combustion engine comprising:
- at least one pair of fuel injectors;
- and
- at least one piston for each pair of fuel injectors in the at least one pair of fuel injectors, the at least one piston including:
- a skirt having an upper body portion;
- a crown formed at the upper body portion;
- and
- a piston bowl formed at the crown, the piston bowl including a first combustion surface and a second combustion surface opposite the first combustion surfaces the first combustion surface and the second combustion surface defining two functionally separated combustion chambers being formed and positioned to accommodate inflowing injector spray so as to reduce heat transfer caused by impingements made by the inflowing injector spray.
A method of operating an internal combustion engine having at least one cylinder and a piston slidably accommodated within the at least one cylinder, the method comprising:
- moving the piston toward a top dead center position during a compression stroke;
- and
- spraying a fuel stream into an air charge mixture in a volume defined by a piston bowl, the piston bowl including a first combustion surface and a second combustion surface opposite the first combustion surface, the first combustion surface and the second combustion surface defining two functionally separated combustion chambers being formed and positioned to accommodate inflowing injector spray so as to reduce heat transfer caused by impingements made by the inflowing injector spray.
Dependencies are inferred from the claim text.